CN104726128A - Catalytic cracking slurry oil catalyst purification and separation device and method - Google Patents
Catalytic cracking slurry oil catalyst purification and separation device and method Download PDFInfo
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- CN104726128A CN104726128A CN201410715191.XA CN201410715191A CN104726128A CN 104726128 A CN104726128 A CN 104726128A CN 201410715191 A CN201410715191 A CN 201410715191A CN 104726128 A CN104726128 A CN 104726128A
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- oil
- slurry oil
- slurry
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- catalytically cracked
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/70—Catalyst aspects
- C10G2300/706—Catalytic metal recovery
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention provides a catalytic cracking slurry oil catalyst purification and separation device, which comprises a high-temperature centrifugal machine, a membrane filtering system, a slurry oil circulating pump, a slurry oil buffering tank, a back flushing tank and a fan. The invention further provides a catalytic cracking slurry oil catalyst purification and separation method, which comprises the following steps: (1), catalytic slurry oil enters the high-temperature centrifugal machine to centrifuge for 60-90s at 120-180 DEG C at the rotation speed of 3000-4000 r/min to perform initial separation, and a catalyst-rich phase is discharged outwards; (2), slurry oil initially separated by the high-temperature centrifugal machine enters the membrane filtering system to filter at 200-300 DEG under 0.7-0.8 Mpa.
Description
Technical field
The present invention relates to catalytic cracking process field in petroleum chemical industry, particularly, relate to the catalyst cleaning tripping device of a kind of catalytically cracked oil and method.
Background technology
No matter catalytically cracked oil is the blending component as fuel heavy oil, or is used as the raw material manufacturing carbon black, needle coke, or carrying out Aromatics Extractive Project produces rubber accelerator, all has important development and application values and good development prospect.The quality of externally extracting oil quality, will directly have influence on the whole economic efficiency of heavy oil catalytically cracking equipment.But the general granules of catalyst containing more than 2000ppm in externally extracting oil, all can produce larger disadvantageous effect to the development of the deep process technologies such as the quality product of fuel heavy oil, refinery coke and Aromatics Extractive Project.Therefore, the exploitation of catalytic cracking unit externally extracting oil purification separation technology is the current both at home and abroad outstanding problem that solves as early as possible of petroleum chemical enterprise's extensive concern needing.
For the annual externally extracting oil of catalytic cracking unit about 200,000 tons, owing to containing a large amount of catalyst fineses in slurry oil, solids content is 2000 ~ 6000ppm about, and the wearing and tearing of its catalyst powder foot couple burner nozzle are very large.Therefore slurry oil is directly as oil fuel component, affects selling price.And slurry oil makes refinery coke ash content raise as coking raw material, reduce refinery coke grade.When slurry oil is used as industrial chemicals, there is stricter requirement to solids content wherein, general requirement solid content≤50ppm.In a word, slurry oil be fully utilized, its solids content must be reduced.
Number of patent application 200410016965.6, denomination of invention are the patent application of " a kind of catalytic cracking unit externally extracting oil purifying treatment method and device " is exactly a kind of cyclonic separation method, but, the method separation accuracy is not high enough, catalyst content can only be reduced to 200-2500mg/L from 18000mg/L, the outer of catalytic slurry catalyzer that can not realize low levels gets rid of.
Summary of the invention
The object of the invention is the finely grained catalyst be better separated in catalytic slurry, the catalyst cleaning tripping device of a kind of catalytically cracked oil and method are provided.
For realizing above-mentioned goal of the invention, technical scheme of the present invention is as follows:
The catalyst cleaning tripping device of a kind of catalytically cracked oil, is characterized in that, comprising: high temperature whizzer, membrane filtration system, slurry oil recycle pump, slurry oil surge tank, recoil tank and blower fan; Described high temperature whizzer entrance is connected with described slurry oil circulating-pump outlet pipeline, outlet is connected with described membrane filtration system bottom opening for feed, described membrane filtration system top concentrates slurry oil discharge port and is connected with described slurry oil surge tank, described membrane filtration system top venting port is connected with rectifying tower bottom inlet mouth, and described slurry oil pump entry pipeline is connected with the catalytic slurry outlet line of described slurry oil surge tank.
Use the catalyst cleaning separation method of a kind of catalytically cracked oil described in claim 1, comprise the following steps:
(1) catalytic slurry enters described high temperature whizzer, and at rotating speed 3000-4000r/min, temperature 120-180 DEG C, centrifugation time 60-90s carries out just being separated, and rich catalyzer is outer row mutually;
(2) first point of slurry oil after described high temperature whizzer separation enters described membrane filtration system, filtration temperature 200-300 DEG C, pressure 0.7-0.8Mpa.
Further, described membrane filtration system adopts cross flow filter, and the film in system is silicon carbide film, the resistance to 800 DEG C of high temperature of described silicon carbide film.
Further, slurry oil recycle pump adopts single-stage cantilever formula Full lining, and machine envelope form is high-temperature bellow, and lining material is rich chromium cast iron, rotating speed 1480r/min; Described slurry oil recycle pump is cooled with circulating water, cooling intake pressure 0.6MPa, temperature 28 DEG C, cooling backwater pressure 0.25MPa, temperature 35 DEG C.
Further, the maximum withstand voltage 2.5Mpa of described recoil tank, top temperature 350 DEG C.
Further, adopt the recoil of on-line Control dry gas, recoil Parameter adjustable joint.
Further, purification slurry oil pressure is 0.3MPa, temperature 200 ~ 300 DEG C, solid content≤20ppm; Concentrated slurry oil pressure 0.7 ~ 0.8MPa, temperature 200 ~ 300 DEG C.
Further, the rich catalyzer phase of 40-50% isolated by described high temperature whizzer, and the catalytic slurry catalyst separating efficiency of described membrane filtration system reaches 80%-90%.
Further, the catalyst particle size scope bottom catalyst cracker is 10-60 μm.
Further, this device does not add any medicine.
Further, vapour line is connected with the catalytic slurry source line of described slurry oil surge tank, and described vapour line outlet is connected by pipeline with described 6th valve; Described vapour line entrance is connected along just dividing a slurry oil pipeline just to divide slurry oil source line to be connected with described membrane filtration system with described high temperature whizzer catalytic slurry source line, described vapour line outlet is connected with purification slurry oil outlet line.
Further, diesel oil enters described slurry oil surge tank along diesel oil pipe, enters described high temperature whizzer and described membrane filtration system, be finally back to the riser tube of described catalyst cracker along diesel oil outlet line through described slurry oil recycle pump.
The principle of patent membrane filtration system of the present invention is: catalytically cracked oil enters membrane filtration system, under the effect of pressure reduction, small molecules flows away through face, and solid particulate matter and suspended substance are retained by face and major part is taken away by pipeline internal medium and circulated in filtering system, partial concentration liquid is delivered to riser tube with keeping system and balances; Thus realize small molecules and solid particulate and to be macromolecularly separated.
Advantage of the present invention is: technique is simple, easy to operate; Can long period hot operation; The filtering accuracy of high-temperature special ceramic carbon SiClx membrane filter appts is high, and granules of catalyst material is thoroughly removed; System anti impulsion load is strong, guarantees system long-period stable operation; Working cost is low, and main operating expenses is the electricity charge; Plant area area is little.
Accompanying drawing explanation
Fig. 1 is main material flow figure;
Fig. 2 is process flow diagram of the present invention;
Wherein: 1. catalyst cracker, 2. rectifying tower, 3. slurry oil surge tank, 4. recycle pump, 5. high temperature whizzer, 6. membrane filtration system, 7. recoil tank, 8. blower fan, 9. the first valve, 10. the second valve, 11. the 3rd valves, 12. the 4th valves, 13. the 5th valves, 14. the 6th valves, 15. the 7th valves, 16. the 8th valves;
Material: a. catalytic slurry, b. just divide the rich catalyzer phase of slurry oil, c., d. purifies slurry oil, e. concentrates slurry oil, f. dry gas, g diesel oil or nitrogen, h. low-pressure steam;
Pipeline: A. catalytic slurry pipeline, B. diesel oil pipe, C. just divide slurry oil pipeline, D. to purify slurry oil pipeline, E. diesel oil outlet line.
Embodiment
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
The catalyst cleaning tripping device of a kind of catalytically cracked oil, is characterized in that, comprising: high temperature whizzer 5, membrane filtration system 6, slurry oil recycle pump 4, slurry oil surge tank 3, recoil tank 7 and blower fan 8; Described high temperature whizzer 5 entrance is connected with described slurry oil recycle pump 4 export pipeline, outlet is connected with described membrane filtration system 5 bottom opening for feed, described membrane filtration system 6 top concentrates slurry oil e discharge port and is connected with described slurry oil surge tank 3, described membrane filtration system 6 top venting port is connected with rectifying tower 2 bottom inlet mouth, and described slurry oil recycle pump 4 source line is connected with the catalytic slurry a outlet line of described slurry oil surge tank 3.
By setting forth the method for work of this device, the present invention can be understood better:
(1) the catalyst cleaning separation method of catalytically cracked oil
Catalytic slurry a enters described high temperature whizzer 5, and at rotating speed 3000-4000r/min, temperature 120-180 DEG C, centrifugation time 60-90s carries out just being separated, and rich catalyzer phase c arranges outward; First point of slurry oil b after described high temperature whizzer 5 is separated enters described membrane filtration system 6, filtration temperature 200-300 DEG C, pressure 0.7-0.8Mpa, purification slurry oil d after described membrane filtration system 6 filters enters next process, and concentrated slurry oil e enters described slurry oil surge tank 4, and purification slurry oil d pressure is 0.3MPa, temperature 200 ~ 300 DEG C, solid content≤20ppm, concentrated slurry oil e pressure 0.7 ~ 0.8MPa, temperature 200 ~ 300 DEG C.
(2) control of online backflushing
Adopt dry gas f recoil, dry gas f pressure is about 1.2MPa, recoil per hour 3 times, each recoil amount 60L; When recoil starts, close described membrane filtration system the 4th valve 12, Time Delay Opening the 3rd valve 11, after recoil, dry gas f removes rectifying tower 2, and the recoil cycle, recoil realized automatically controlling by time controling, recoil Parameter adjustable joint.
(3) clean
After macrocyclic filtration runs, filtration yield can decline to some extent, needs to carry out cleaning and regeneration to equipment when purifying slurry oil d and dropping to below set amount.
Close the 4th valve 12, open the 8th valve 16, make high temperature diesel oil enter system, completing when purifying cleaning and regeneration when slurry oil d returns to initial purge slurry oil d amount, again dropping into catalytic slurry a.
(4) shut down
A, short period of time shut down and need shut down with after diesel oil j cleaning system, with low temperature diesel oil j cooling or naturally cooling before shutting down.
B, maintenance down or long-time shutdown then use nitrogen pipeline purging by after system replaces cleaning, namely material j are changed into nitrogen by diesel oil.
C. steaming out is used after the emptying maintenance of system-down and sampling.
The effect that the present embodiment produces: with treatment capacity 10 × 10
4t/a is example, and table 1.1 slurry oil filtration unit battery limit condition table 1.2 is general facilities consumption summary sheet.
Table 1.1 slurry oil filtration unit battery limit condition table
Table 1.2 general facilities consumes summary sheet
| Sequence number | Title | Unit | Continuous quantity | Interruption amount | Remarks |
| One | Water consumption |
| 1 | Recirculated water | t/h | 1.5 | ||
| 2 | Fresh water | t/h | ～1 | Intermittently | |
| Two | Electrisity consumption | ||||
| 1 | 380V | KW | 75 | ||
| Three | Steam consumption quantity | ||||
| 1 | 1.0MPa steam | m 3/a | 390 | Intermittently | |
| Four | Pressurized air | ||||
| 1 | Purified compressed air | Nm 3/h | 9.5 | ||
| Five | Nitrogen | Nm 3/a | 5 | Intermittently | |
| Six | Dry gas | Nm 3/h | 2 | 1 hour 3 times | |
| Seven | Diesel oil | m 3/a | 58 | Intermittently |
The economic benefit of patent of the present invention: by the construction of this testing apparatus, solid content≤20ppm in purification slurry oil after filtration, the quality of purification slurry oil obtains and significantly promotes, and for the comprehensive utilization of catalytic slurry creates condition, has significant economic benefit and social benefit.
Claims (12)
1. the catalyst cleaning tripping device of catalytically cracked oil, it is characterized in that, comprising: high temperature whizzer (5), membrane filtration system (6), slurry oil recycle pump (4), slurry oil surge tank (3), recoil tank (7) and blower fan (8);
Described high temperature whizzer (5) entrance is connected with described slurry oil recycle pump (4) export pipeline, outlet is connected with described membrane filtration system (5) bottom opening for feed, described membrane filtration system (6) top concentrates slurry oil (e) discharge port and is connected with described slurry oil surge tank (3), described membrane filtration system (6) top venting port is connected with rectifying tower (2) bottom inlet mouth, and described slurry oil recycle pump (4) source line is connected with catalytic slurry (a) outlet line of described slurry oil surge tank (3).
2. use the catalyst cleaning separation method of a kind of catalytically cracked oil described in claim 1, it is characterized in that comprising the following steps:
(1) catalytic slurry (a) enters described high temperature whizzer (5), and at rotating speed 3000-4000r/min, temperature 120-180 DEG C, centrifugation time 60-90s carries out just being separated, and rich catalyzer phase (c) is arranged outward;
(2) first point of slurry oil (b) after described high temperature whizzer (5) separation enters described membrane filtration system (6), filtration temperature 200-300 DEG C, pressure 0.7-0.8Mpa.
3. the catalyst cleaning separation method of a kind of catalytically cracked oil according to claim 2, is characterized in that: described membrane filtration system (6) adopts cross flow filter, and the film in system is silicon carbide film, the resistance to 800 DEG C of high temperature of described silicon carbide film.
4. the catalyst cleaning separation method of a kind of catalytically cracked oil according to claim 2, it is characterized in that: slurry oil recycle pump (4) adopts single-stage cantilever formula Full lining, machine envelope form is high-temperature bellow, and lining material is rich chromium cast iron, rotating speed 1480r/min; Described slurry oil recycle pump (4) is cooled with circulating water, cooling intake pressure 0.6MPa, temperature 28 DEG C, cooling backwater pressure 0.25MPa, temperature 35 DEG C.
5. the catalyst cleaning separation method of a kind of catalytically cracked oil according to claim 2, is characterized in that: the maximum withstand voltage 2.5Mpa of described recoil tank (7), top temperature 350 DEG C.
6. the catalyst cleaning separation method of a kind of catalytically cracked oil according to claim 2, is characterized in that: adopt on-line Control dry gas (f) recoil, recoil Parameter adjustable joint.
7. the catalyst cleaning separation method of a kind of catalytically cracked oil according to claim 2, is characterized in that: purification slurry oil (d) pressure is 0.3MPa, temperature 200 ~ 300 DEG C, solid content≤20ppm; Concentrated slurry oil (e) pressure 0.7 ~ 0.8MPa, temperature 200 ~ 300 DEG C.
8. the catalyst cleaning separation method of a kind of catalytically cracked oil described according to claim 2, it is characterized in that: described high temperature whizzer (5) isolates rich catalyzer phase (c) of 40-50%, the catalytic slurry catalyst separating efficiency of described membrane filtration system (6) reaches 80%-90%.
9. the catalyst cleaning separation method of a kind of catalytically cracked oil described according to claim 2, is characterized in that: the catalyst particle size scope of catalyst cracker (1) bottom is 10-60 μm.
10. the catalyst cleaning separation method of a kind of catalytically cracked oil according to claim 2, is characterized in that: this device does not add any medicine.
The catalyst cleaning separation method of 11. a kind of catalytically cracked oil according to claim 2, it is characterized in that: vapour line is connected with catalytic slurry (a) source line of described slurry oil surge tank (3), described vapour line outlet is connected by pipeline with described 6th valve (14); Described vapour line entrance is connected along just dividing a slurry oil pipeline (C) just to divide slurry oil (b) source line to be connected with described membrane filtration system (6) with described high temperature whizzer (5) catalytic slurry source line, described vapour line outlet is connected with purification slurry oil outlet line (D).
The catalyst cleaning separation method of 12. a kind of catalytically cracked oil according to claim 2, it is characterized in that: diesel oil enters described slurry oil surge tank along diesel oil pipe (B), enter described high temperature whizzer (5) and described membrane filtration system (6) through described slurry oil recycle pump (4), be finally back to the riser tube of described catalyst cracker (1) along diesel oil outlet line (E).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715191.XA CN104726128A (en) | 2014-12-01 | 2014-12-01 | Catalytic cracking slurry oil catalyst purification and separation device and method |
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|---|---|---|---|
| CN201410715191.XA CN104726128A (en) | 2014-12-01 | 2014-12-01 | Catalytic cracking slurry oil catalyst purification and separation device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063417A (en) * | 2020-09-15 | 2020-12-11 | 襄阳九鼎昊天环保设备有限公司 | Oil slurry separation system and separation method |
| CN112063416A (en) * | 2020-09-15 | 2020-12-11 | 襄阳九鼎昊天环保设备有限公司 | Oil slurry separation system and separation method |
| CN112063412A (en) * | 2020-09-07 | 2020-12-11 | 襄阳九鼎昊天环保设备有限公司 | Silicon carbide ceramic membrane oil slurry separation system and separation method |
-
2014
- 2014-12-01 CN CN201410715191.XA patent/CN104726128A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063412A (en) * | 2020-09-07 | 2020-12-11 | 襄阳九鼎昊天环保设备有限公司 | Silicon carbide ceramic membrane oil slurry separation system and separation method |
| CN112063417A (en) * | 2020-09-15 | 2020-12-11 | 襄阳九鼎昊天环保设备有限公司 | Oil slurry separation system and separation method |
| CN112063416A (en) * | 2020-09-15 | 2020-12-11 | 襄阳九鼎昊天环保设备有限公司 | Oil slurry separation system and separation method |
| CN112063417B (en) * | 2020-09-15 | 2024-01-23 | 襄阳九鼎昊天环保设备有限公司 | Oil slurry separation system and separation method |
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