CN1423574A - Pressure fitration device and method employing a depressurizing chamber and material transport - Google Patents
Pressure fitration device and method employing a depressurizing chamber and material transport Download PDFInfo
- Publication number
- CN1423574A CN1423574A CN00818367A CN00818367A CN1423574A CN 1423574 A CN1423574 A CN 1423574A CN 00818367 A CN00818367 A CN 00818367A CN 00818367 A CN00818367 A CN 00818367A CN 1423574 A CN1423574 A CN 1423574A
- Authority
- CN
- China
- Prior art keywords
- pressure
- phase material
- solid phase
- filter element
- reducing chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
- B01D33/60—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for washing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
- B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
- B01D33/808—Accessories integrally combined with devices for controlling the filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/20—Pressure-related systems for filters
- B01D2201/202—Systems for applying pressure to filters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Drying Of Solid Materials (AREA)
- Filtration Of Liquid (AREA)
Abstract
An assembly for separating solid phase material from a slurry that comprises a pressurized filtration unit including a vessel and filter media. A slurry (5) is fed to the filtration unit (10), where it is separated into a solid phase material and a liquid phase material. The filtration unit (10) has a solid outlet (12) for discharging the solid phase material to a material transport (15). The material transport (15) moves the solid phase material to a depressurizing chamber (20) that has a lower pressure than the filtration unit (10). As the solid phase material enters the depressurizing chamber (20), it is exposed to the lower pressure of that chamber. The material transport maintains (15) the pressure difference between the filtration unit (10) and the chamber (20). Subsequently, the depressurized solid phase material can be conveyed to other equipment for drying or other processing.
Description
Background of invention
The present invention relates to a kind of filter and the relevant method that slurries is separated into solid phase and liquid phase.More particularly, the present invention relates to a kind of pressure filter and the relevant method of from slurries, isolating solid phase material continuously and making this material explosive decompression.
In the production and processing of chemical products, usually need separating solids material from slurries.For example, the slurries that produce by chemical reactor and precipitation unit.Solid material is normally separated from slurries by filtration or centrifugation.Comprise suitable filter method gravity filtration, vacuum help filter and pressure filtration.For example, in the production of the terephthalic acid (TPA) of purifying, the crystallization of terephthalic acid (TPA) generally utilizes rotation vacuum filtration unit to separate from slurries.Filter element has columniform filter drum, and this filter drum can turn round installation in the enclosure.In the time of in slurries are packed the filter element shell into, produce pressure reduction, the liquid of slurries is partly moved by filter medium in filter interior.Deposition one deck crystallization on the exterior cylindrical surfaces of filter drum.
Treat that solid material is separated from slurries after, this solid material is removed from filter medium, normally removed, and then carry out follow-up processing or processing with the form of the filter cake of solid phase material.In some applications, spray with gas-pressurized solid material is removed and this material is advanced into discharging opening from filter medium.If use pressure filtration for the processing in downstream, may need some to handle, so that solid material is removed to lower pressure (as atmospheric pressure).In order to carry out process operation continuously, also need the pressure reduction in the filter element seriously not destroyed.
US 5093001 discloses a kind of pressure filter, and it has a pair of valve for discharging in the exit.This patent is incorporated herein by reference.Yet this structure is not enough to solve pressure control problem, also is not enough to keep high-caliber material throughput by filter element.US 5589079 and 5470473 discloses a pair of valve arrangement and funnel, to handle the solid material from the pressure filtration unit in batches.These patents are incorporated herein by reference.Each valve arrangement can have dome-shaped valve part.In the operation, solid material is disposed to first funnel from filter plant.Be connected this funnel of valve seal on first funnel, simultaneously the pressure balance between first funnel and second funnel.This pressure is the intermediate pressure of initial pressure and final, lower pressure.After the pressure balance between the funnel, just solid material is transferred to second funnel.After second funnel is depressurized to final, lower pressure, this solid material is disposed to storage tank or conveyer.Although disclosed apparatus and method are better than the apparatus and method of front, these apparatus and method are subject to the batch processing of solid material.Multistage, batch-wise processing requirements has produced bottleneck effect, has got rid of high speed, continuous possibility by material.Valve device and pressure equalizing device also need often to keep the equipment operating efficiency.Therefore, the pressure filter that needs a kind of continuous processing solid material.Particularly need a kind of pressure by rapid reduction isolated solid phase material from slurries to keep pressure reduction between filter element and the upstream device again simultaneously and process the pressure filter of slurries continuously.
Summary of the invention
The device that reclaims solid phase material from slurries continuously of the present invention comprises the pressure filtration unit, and this pressure filtration unit comprises having the container that separates the filter medium of solid phase material from slurries.This filter element has the slurries inlet, and optional inert gas source.The liquid outlet discharging is from the liquid phase material of filter element.According to the design of filter element, gas also can discharge by liquid outlet.From filter element solid outlet discharging solid phase material.This filter element can randomly comprise the wash mill on the material filter cake that is deposited on the filter medium with wash fluid or liquid dispersion.This wash fluid replaces other liquid and/or the impurity in the filter cake.
The material conveyer solid phase material of the solid outlet of the unit of inherent filtration in the future continuously is transferred in the pressure-reducing chamber.The pressure of the pressure ratio filter element in this pressure-reducing chamber is low, is convenient to the subsequent treatment of this material.Because solid phase material is transferred in the pressure-reducing chamber, so this material directly also promptly is decompressed to the lower pressure in this pressure-reducing chamber.Advantageously, decompression rapidly can cause " flash distillation " of solid phase material, removes residual liquid, gas and volatile materials from this material.The pressure-reducing chamber can further comprise one or more outlets of released vapour, gas and/or volatile materials from this chamber.This pressure-reducing chamber can comprise inert gas, to stablize active or unsettled solid phase material.Any suitable means of transportation all can shift the solid phase material in pressure-reducing chamber, in order to follow-up processing, as drying.
The material conveyer generally comprises the inlet of acceptance from the solid phase material of filter element outlet.This material is disposed in the inlet of material conveyer under pressure.The invention is characterized in that the material conveyer has kept the pressure reduction between filter element and the pressure reduction vessel.Solid phase material is transferred to an outlet, and it is discharged in the pressure-reducing chamber in this exit.This material is explosive decompression owing to the lower pressure that is exposed to the pressure-reducing chamber.
On the other hand, provide a kind of system that forms by one or more filter elements, decompressing unit and material conveyer.This system can further comprise one or more chemical reactors or settling vessel, so that provide the slurries source for filter element.One or more downstream conveyor and/or drier can help the further processing of solid phase material.Described conveyer can be a screw spreader, also can be the conveyer of other type.
Foundation on the other hand, a kind of method of isolating solid phase material from slurries comprises the steps: that (a) provides and have the filter element that remains on the container under first pressure and have filter medium, (b) slurries are added in this container, (c) slurries are separated into solid phase material and liquid phase material, (d) continuously this solid phase material is transferred to the pressure-reducing chamber and keeps pressure reduction between filter element and the pressure-reducing chamber simultaneously, and (e) when solid phase material enters the pressure-reducing chamber, make its explosive decompression.Solid phase material remains under first pressure basically always, till entering the pressure-reducing chamber, although can allow a spot of controlled pressure to leak (pressure leakage) between the solid phase material transmission period.Further step comprises that (f) provides slurries from chemical reactor; Reach (g) solid phase material that reduces pressure is transferred to drier.
The accompanying drawing summary
Fig. 1 is the side view that the wall pressure filtration unit that partly cuts away is arranged;
Fig. 2 is the flow chart of an embodiment of Pressure Filter System; And
DESCRIPTION OF THE PREFERRED
With reference to Fig. 1, be briefly described the device that from slurries 5, separates solid phase material.This device comprises the filter element 10 with solid outlet 12, and solid outlet 12 is used for discharging by filter element 10 and from the isolated solid phase material of slurries.Liquid outlet 11 is used for relief liquor phase material and optional gas material.Material conveyer 15 is connected in solid outlet 12 with filter element 10.Randomly, filter element 10 can be connected to each other by connector 14 with material conveyer 15.This connector 14 is specially adapted to the filter element of retrofiting.Material conveyer 15 links to each other with pressure-reducing chamber 20 in its downstream one side.Pressure-reducing chamber 20 preferably has one or more outlets 25, with 20 discharged steam, gas and/or volatile material (being generally steam) from the pressure-reducing chamber.Pressure-reducing chamber 20 can link to each other with conveyer and/or drier (not shown) further, with the described solid phase material of further processing.
Filter element 10 comprises the container 13 and the filter medium 8 of splendid attire slurries 5.Filter element 10 can be any equipment that slurries 5 is separated into solid phase and liquid phase material.Because filter element 10 pressurizes, thus its for cylindrical or spherical be favourable, although other shape also is fine.For example, filter element 10 can be bulging filter element pressurization, rotation, and as US 5589079,5470473 and 2352303 was disclosed, the disclosed content of these patents was incorporated herein by reference.Slurries 5 by suitable source, as chemical reactor or settling apparatus (not shown), are offered filter element 10.Slurries 5 pass through inlet 3 feeds in filter element 10.This inlet 3 can be located and construct according to the Design and Features of particular filter unit, and this is that those skilled in the art is known.The disc type filter element of other pressure filtration unit such as supercharging is equally applicable to the present invention.
Make filter element 10 pressurizations, to promote that slurries 5 are separated into solid phase material and liquid phase material by filter medium 8.Filter element 10 is according to its design pressurization.For example with reference to figure 1, filter element is pressurizeed as inert gas by pressurized gas source 30.It is possible making the additive method of filter element 10 pressurizations, and the slurries that for example will pressurize are introduced in the unit 10.Filter medium 8 separates liquid phase and solid phase material with slurries.Filter medium 8 is selected according to the slurries that will separate.For example, filter medium 8 can be one deck filter cloth or the stainless steel of installing along the steel drum outer surface.For some application, preferred filter media can be born high temperature and high pressure.This paper employed " liquid phase material " is meant isolated liquid from slurries, although this liquid may comprise the solid material of some suspensions.Term " solid phase material " is meant the material of separating by filter medium 8 from slurries, as is deposited on " filter cake " on the filter medium.This solid phase material also can comprise a large amount of liquid, as liquid and/or the cleaning solution of not separating from solid phase material.The temperature of solid phase material can be greater than the liquid boiling point under atmospheric pressure that is comprised in this solid phase material.For this hot material, when its during by explosive decompression or flash distillation, described liquid is evaporation rapidly along with the reduction of pressure or pressure and temperature.For example, comprise water and temperature greater than 212 pressurization solid phase material explosive decompression during to atmospheric pressure, the water in this material is gasificated into steam rapidly.Other solid phase material that pressurizes, heats, comprises liquid also can be used this device processes.
Filter element 10 can randomly comprise washing facility 7, is deposited on during filtering on the filter cake on the filter medium 8 with fluid or liquid dispersion that will washing.The fluid of this washing can spray by filter cake or solid phase material under pressure and enter filter.The fluid of this washing can be replaced moisture residual in the filter cake, take away in the filter cake impurity and/or with the liquid in the fluid displacement filter cake of washing.For example, the fluid of this washing can be a water, is used for replacing the acetate in terephthaldehyde's acid crystal, and then from solid outlet 12 discharging terephthalic acid (TPA)s.Suitable washing facility can comprise that the collector that for example wash fluid is sprayed into filter cake covers the container 13 of (headers spanning).Other wash fluid and equipment also are fine.
Solid phase material can be by any suitable mechanism that those skilled in the art understood and is emitted from filter medium.For example, gas-pressurized is from internal spray, and the cylindrical filter of rotation can push away the outer surface of filter medium with the filter cake of deposition and enter in the solid outlet 12.Equally, filter cake can mechanically be removed from filter medium 8 by scraper or similar equipment (not shown).Other the equipment of discharging solid phase material from filter element also is fine, and is also included within the scope of the present invention.
Material conveyer 15 has the inlet 16 of reception from the solid phase material of the solid outlet 12 of filter element 10.Because this inlet 16 links to each other with filter element 10, so this inlet pressurizes.Material conveyer 15 is transferred to outlet 18 with solid phase material.The transfer of solid phase material is preferably continuous so that this material from inlet be transferred to outlet and need not filter element 10 and pressure-reducing chamber 20 between progressively decompression or equipressure.The pressure reduction that material conveyer 15 keeps between filter element 10 and the pressure-reducing chamber 20, solid phase material continuously shifts by this equipment again simultaneously.For example, as shown in Figure 1, material conveyer 15 can be a changeover valve.This valve has a plurality of blades 19 that turn round installation.Along with solid phase material deposits between blade, it is transferred to outlet 18.The inner surface 17 of preferred blade 19 sealed engagement changeover valves is to keep the pressure reduction between filter element 10 and the pressure-reducing chamber 20.Blade 19 also can allow to leak by a spot of controlled pressure of these blades, so that the filter cake on the filter medium 8 is not transferred, and the pressure reduction between filter element 10 and the pressure-reducing chamber 20 is kept.Other material conveyer 15 also is fine.
Any suitable mechanism operation of material conveyer 15 usefulness.For example with reference to figure 1, the material conveyer is by driver 40, and bearing assembly and driving shaft 41 operations, driver can be that motor or internal combustion engine or other provide mechanokinetic equipment to material conveyer 15.
Pressure-reducing chamber 20 has the solid inlet 22 of reception from the solid phase material of filter element 10.Sidewall 24 comprises the solid phase material that enters, and perhaps is exposed to the lower pressure in the pressure-reducing chamber 20.The lower pressure in pressure-reducing chamber 20 preferably is about atmospheric pressure, although can use higher or lower pressure in pressure-reducing chamber 20.Pressure-reducing chamber 20 has the outlet 25 of at least one discharged steam, and this steam is that solid phase material forms when being exposed to the lower pressure of this chamber.Outlet 25 can be led to atmosphere or the (not shown) that links to each other with storage and/or recovery system.This system helps the purification and the recovery of the liquid of gas that pressure-reducing chamber 20 discharges and/or gasification.
Pressure-reducing chamber 20 is air inclusion randomly, as inert gas, with the reactivity of restriction solid phase material and/or play the covering effect and catch fire preventing.For example, with reference to Fig. 1, pressure-reducing chamber 20 links to each other with inert gas such as nitrogen, argon gas, helium or carbon dioxide source 30.Those skilled in the art should be appreciated that this gas is to select according to the reactivity of solid phase material.
On the other hand, provide a kind of dope filtration system.One or more filter elements 10 can be linked to each other with one or more material conveyers 15 and one or more pressure-reducing chamber 20.With reference to Fig. 2, an example of this system has been described.Source 1 offers filter element 10 with slurries 5.Source 1 can comprise chemical reactor, precipitation unit, extraction cells, wastemaster or other suitable slurries supply source that comprises solid phase and liquid phase material.Each filter element 10 all links to each other with material conveyer 15.Material conveyer 15 is transferred to common pressure-reducing chamber 20 with solid phase material, although can use a plurality of pressure-reducing chambers 20.Solid phase material transfers to drier or other solid phase material treatment facility 60 by conveyer 50 (as screw spreader or be suitable for transmitting other machine-processed conveyer of this material) by pressure-reducing chamber 20.Preferred conveyer 50 and equipment 60 are suitable for continuous transmission and processing.The speed of service of conveyer 50 can be adjusted according to the charging rate of slurries and the output speed of solid phase material during use.The system of other structure also is fine.
According on the other hand, provide a kind of method of from slurries, separating solid phase material.This method comprises provides the filter element 10 with container 13.Container 13 remains under first pressure.This container comprises filter medium 8.By entering the mouth 3 with slurries 5 introducing containers 13.Slurries 5 can be provided as chemical reactor, settling vessel, extraction cells, wastemaster or other suitable slurries supply source that comprises solid phase and liquid phase material by any suitable source 1.With filter medium 8, slurries 5 are separated into solid phase material and liquid phase material.Randomly, can wash this solid phase material.Then this solid phase material is transferred to the pressure-reducing chamber, keeps the pressure reduction between filter element and the pressure-reducing chamber simultaneously.Solid phase material preferably shifts or transfers to pressure-reducing chamber 20 from filter element 10 continuously, so that the filtration and the processing of continuous solid phase material to be provided.Advantageously, when solid phase material enters the pressure-reducing chamber, directly and decompression promptly, the required pressure equalizing device that makes in need not other method.Preferred solid phase material remains essentially under first pressure, till it enters the pressure-reducing chamber.As selection, solid phase material can partly reduce pressure when transferring to the pressure-reducing chamber by filter element.Post-decompression solid phase material can be exported by the pressure-reducing chamber by any suitable transmission equipment.Follow-up step can comprise dry solid phase material and/or this material is offered processing or the processing of miscellaneous equipment to carry out other.
Although the present invention describes in the mode of specific embodiment and application, those of ordinary skill in the art can make other embodiment and correction not breaking away from spirit of the present invention or surmounting under the situation of scope of the present invention according to this instruction.Therefore, be to be understood that the accompanying drawing of this specification and explanation are that mode with embodiment provides, promoting the understanding of the present invention, and it should not to be used as be restriction to scope of the present invention.
Claims (28)
1. the device of continuous pressure filtration slurries, this device comprises:
The pressure filtration unit, this unit comprises the container that remains under first pressure, in described container, be used for described slurries are separated into the filter medium of liquid phase material and solid phase material, discharge the liquid outlet of described liquid phase material by described filter element, and the solid outlet that discharges described solid phase material;
Pressure-reducing chamber, this pressure-reducing chamber remain on second and than under the low pressure of described first pressure, described pressure-reducing chamber has the solid inlet of reception from the solid phase material of described filter element, and comprise and be exposed to second and the solid phase material of low-pressure more; With
The material conveyer, this material conveyer is between the solid inlet in the solid outlet of described filter element and described pressure-reducing chamber, be used for keeping the pressure reduction between described filter element and the described pressure-reducing chamber, and described solid phase material is transferred to described pressure-reducing chamber continuously by the solid outlet of described filter element
Wherein said solid phase material is decompressed to described second and lower pressure by described about first pressure.
2. the device of claim 1 further comprises the slurries source that links to each other with described filter element.
3. the device of claim 2, wherein said slurries source is a chemical reactor.
4. the device of claim 1 further comprises the inert gas source that links to each other with described filter element.
5. the device of claim 1, further comprise link to each other with described pressure-reducing chamber be used to receive drier from the solid phase material in this pressure-reducing chamber.
6. the device of claim 1 further comprises the conveyer that the solid phase material from described pressure-reducing chamber is transferred to drier.
7. the device of claim 1, wherein said material conveyer is the changeover valve with shell and rotor, described shell has entrance and exit, described rotor has a plurality of blades, described shell inlet links to each other with described filter element outlet, described housing outlet links to each other with described pressure-reducing chamber inlet, at least some described blades are exposed to described shell inlet, at least some described blades are exposed to described housing outlet, and at least some described blades engage with described body seal.
8. the device of claim 1, wherein said filter element is the cylindrical filter that can turn round installation.
9. the device of claim 1, wherein said solid phase material is crystalloid in temperature under greater than the liquid boiling temperature and second pressure.
10. the system of pressure filtration slurries, this system comprises:
At least one pressure filtration unit, this unit comprises the container that remains under first pressure, in described container, be used for described slurries are separated into liquid phase material and the filter medium that contains the solid phase material of liquid, discharge the liquid outlet of described liquid phase material by described filter element, and the solid outlet that discharges described solid phase material;
Inert gas source;
At least one pressure-reducing chamber, this pressure-reducing chamber receives described inert gas and this inert gas is remained on second and than under the low pressure of described first pressure, described at least one pressure-reducing chamber has the inlet of reception from the solid phase material of described at least one filter element, this pressure-reducing chamber comprises and directly is exposed to described second and the solid phase material of low-pressure more, and has the outlet of the discharging steam that lower pressure forms because of solid phase material is exposed to; With
At least one material conveyer, this material conveyer is between the solid inlet in the solid outlet of described filter element and described at least one pressure-reducing chamber, be used for keeping the pressure reduction between described at least one filter element and described at least one pressure-reducing chamber, and described solid phase material is transferred in described at least one pressure-reducing chamber by the solid outlet of described at least one filter element;
The temperature of wherein said solid phase material is greater than the boiling temperature of the liquid that is comprised in this solid phase material under described second pressure; And
Rely on described solid phase material to be exposed to described second and the decompression during lower pressure, make the liquid gasification in this solid phase material.
12. the system of claim 11 further comprises the slurries source that links to each other with described at least one filter element.
13. the system of claim 12, wherein said slurries source is a chemical reactor.
14. the system of claim 11 further comprises the conveyer that sends from the solid phase material in described pressure-reducing chamber.
15. the system of claim 11 further comprises the drier that is used to receive described solid phase material that at least one links to each other with described pressure-reducing chamber.
16. the system of claim 11, wherein said material conveyer is the changeover valve with shell and rotor, described shell has entrance and exit, described rotor has a plurality of blades, described shell inlet links to each other with described filter element outlet, described housing outlet links to each other with described pressure-reducing chamber inlet, at least some described blades are exposed to described shell inlet, at least some described blades are exposed to described housing outlet, and at least some described blades engage with described body seal.
17. the system of claim 11, wherein said filter element is the cylindrical filter that can turn round installation.
18. the system of claim 11, wherein said solid phase material is crystalloid.
19. the system of claim 11, wherein said second pressure is atmospheric pressure.
20. the system of claim 11 further comprises the connector that connects described filter element and described material conveyer.
21. the method for pressure filtration slurries, this method comprises:
Filter element is provided, and this filter element has container and the filter medium that remains under first pressure;
Slurries are introduced into described container;
Described slurries are separated into liquid phase material and solid phase material;
Described solid phase material is transferred to the pressure-reducing chamber from described container continuously, keeps the pressure reduction between this filter element and this pressure-reducing chamber simultaneously; And
Make described solid phase material be decompressed to second and than the low pressure of described first pressure in this pressure-reducing chamber.
22. the method for claim 21 further comprises providing inert gas source to described filter element.
23. the method for claim 22 further comprises providing inert gas source to described pressure-reducing chamber.
24. the method for claim 21 further comprises the steam that forms during the described solid phase material decompression of discharging.
25. the method for claim 21 comprises that further the solid phase material with described decompression is sent to drier.
26. the method for claim 24 further comprises dry described decompression solid phase material.
27. the method for claim 21, wherein said solid phase material is continuous to the transmission in described at least one pressure-reducing chamber.
28. the method for claim 21, wherein said second pressure is about atmospheric pressure.
29. the method for claim 21 further comprises by chemical reactor described slurries are provided.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13564099P | 1999-05-24 | 1999-05-24 | |
| US60/135,640 | 1999-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1423574A true CN1423574A (en) | 2003-06-11 |
Family
ID=22468977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00818367A Pending CN1423574A (en) | 1999-05-24 | 2000-05-23 | Pressure fitration device and method employing a depressurizing chamber and material transport |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1225964A1 (en) |
| KR (1) | KR20020066369A (en) |
| CN (1) | CN1423574A (en) |
| AU (1) | AU5157200A (en) |
| BR (1) | BR0010920A (en) |
| CA (1) | CA2373162A1 (en) |
| MX (1) | MXPA01012034A (en) |
| WO (1) | WO2000071226A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101679185B (en) * | 2007-05-31 | 2013-07-10 | 陶氏意大利公司 | Improved process for the recovery of terephthalic acid |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6639104B2 (en) | 1999-12-10 | 2003-10-28 | Inca International S.P.A. | Process for the recovery of purified terephthalic acid (PTA) |
| JP2003519205A (en) * | 1999-12-29 | 2003-06-17 | インカ インターナショナル エス ピー エイ | Method for recovering purified terephthalic acid (PTA) |
| CN1264599C (en) * | 2001-05-15 | 2006-07-19 | 三菱化学株式会社 | Process for producing compound |
| DE102006058163A1 (en) * | 2006-12-09 | 2008-06-19 | Lurgi Ag | Process and plant for the production of crude terephthalic acid |
| DE102012206590A1 (en) | 2012-04-20 | 2013-10-24 | Coperion Gmbh | Method for operating a rotary valve and rotary valve for performing the method |
| DE102013211197A1 (en) | 2013-06-14 | 2014-12-18 | Coperion Gmbh | Rotary valve and conveyor to such a rotary valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5489372A (en) * | 1977-12-27 | 1979-07-16 | Samurou Yamamoto | Pressurizing filter pressing method and its device |
| US4179043A (en) * | 1978-01-03 | 1979-12-18 | Koppers Company, Inc. | Rotary valve apparatus |
| JP2595657B2 (en) * | 1988-05-27 | 1997-04-02 | 三井石油化学工業株式会社 | How to recover crystals from a slurry |
| US5175355A (en) * | 1991-04-12 | 1992-12-29 | Amoco Corporation | Improved process for recovery of purified terephthalic acid |
| US5470473A (en) * | 1994-02-17 | 1995-11-28 | Baker Hughes Incorporated | Rotary vacuum filtration drum with valved hopper cake treatment means |
| JPH11179115A (en) * | 1997-12-24 | 1999-07-06 | Mitsui Chem Inc | Method and apparatus for recovering crystal from slurry |
-
2000
- 2000-05-23 KR KR1020017015075A patent/KR20020066369A/en not_active Application Discontinuation
- 2000-05-23 WO PCT/US2000/014182 patent/WO2000071226A1/en not_active Application Discontinuation
- 2000-05-23 AU AU51572/00A patent/AU5157200A/en not_active Abandoned
- 2000-05-23 EP EP00936224A patent/EP1225964A1/en not_active Withdrawn
- 2000-05-23 CN CN00818367A patent/CN1423574A/en active Pending
- 2000-05-23 MX MXPA01012034A patent/MXPA01012034A/en unknown
- 2000-05-23 CA CA002373162A patent/CA2373162A1/en not_active Abandoned
- 2000-05-23 BR BR0010920-7A patent/BR0010920A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101679185B (en) * | 2007-05-31 | 2013-07-10 | 陶氏意大利公司 | Improved process for the recovery of terephthalic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1225964A1 (en) | 2002-07-31 |
| CA2373162A1 (en) | 2000-11-30 |
| WO2000071226A1 (en) | 2000-11-30 |
| BR0010920A (en) | 2003-07-01 |
| AU5157200A (en) | 2000-12-12 |
| KR20020066369A (en) | 2002-08-16 |
| MXPA01012034A (en) | 2002-05-06 |
| WO2000071226A9 (en) | 2002-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6033579A (en) | Red mud dewatering and washing process | |
| US5470473A (en) | Rotary vacuum filtration drum with valved hopper cake treatment means | |
| US11364457B2 (en) | Vacuum filter system for solid-liquid separation and process for filtering solid particles | |
| EA021027B1 (en) | Particle pump methods and devices | |
| CN1423574A (en) | Pressure fitration device and method employing a depressurizing chamber and material transport | |
| CN1090786A (en) | Handle the equipment of thin pulp and the using method of this equipment | |
| CN1141421A (en) | Apparatus for continuous removal of solvent or other liquid from solid particles or granules | |
| US6655531B1 (en) | Pressure filtration device | |
| CN112624167B (en) | Preparation method of pseudo-boehmite | |
| CN1926381A (en) | Method and device for removing water from a steam plant | |
| EP0197400A2 (en) | Treating apparatus having multifunction | |
| AU2004269422B2 (en) | Separation system, method and apparatus | |
| CN1257001C (en) | Rotary filter with a blowback valve | |
| SA00210612B1 (en) | Method for the extraction of purified terephthalic acid (PTA) | |
| FR2679933A1 (en) | METHOD OF EXTINCTION AND CAUSTIFICATION IN ONE STEP FOR THE PRODUCTION OF CELLULOSE PULP. | |
| CN100509746C (en) | Method of separating and purifying terephthalic acid | |
| US6656364B1 (en) | Method for purifying contaminated liquids | |
| CN101318895B (en) | Novel separation purification method for p-benzene dicarboxylic acid | |
| MX2012013450A (en) | Process and system for the separation and drying of carboxylic acid crystals. | |
| CN111905438A (en) | Process and device for drying and mixing residue and filter residue of slurry | |
| EP3753999B1 (en) | Semi-continous hydrothermal reaction system | |
| JP3921801B2 (en) | Method for supercritical and hydrothermal reaction treatment of organic matter and treatment plant | |
| CN213537297U (en) | Centrifugation and mixed composite polycrystalline silicon slag slurry treatment system | |
| WO2020252682A1 (en) | Semi-continuous hydrothermal reaction system | |
| SU750227A1 (en) | Plant for drying suspension and highly-viscous materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |