CN106345371B - A kind of device of polyolefin catalyst charging - Google Patents
A kind of device of polyolefin catalyst charging Download PDFInfo
- Publication number
- CN106345371B CN106345371B CN201510422837.XA CN201510422837A CN106345371B CN 106345371 B CN106345371 B CN 106345371B CN 201510422837 A CN201510422837 A CN 201510422837A CN 106345371 B CN106345371 B CN 106345371B
- Authority
- CN
- China
- Prior art keywords
- catalyst
- cyclone
- intubation
- catalyst charge
- pipe
- 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.)
- Active
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The present invention provides a kind of devices of polyolefin catalyst charging, comprising: reaction-ure feeding pipe, catalyst charge intubation that is in intercalation reaction object feed pipe and extending to the downstream of the reaction-ure feeding pipe, and the cyclone in catalyst charge intubation is set, wherein, cyclone will be for that will guide spiral flowing by the catalyst of cyclone.It can be effectively improved mobility status in catalyst charge device in the case where not doing big structural change to existing catalyst charge device, extend device stable operation cycle, reduce the risk for leading to parking because of the blocking of catalyst charge device.
Description
Technical field
The present invention relates to a kind of polyolefin catalyst feeding devices.
Background technique
Polyacrylic continous way polymerization technique is the polypropylene manufacturing process generallyd use in the world.Different polypropylene works
The reactor that skill is mainly manifested in use is different, and such as: the Spheripol technique homopolymerization of Basel (Basell) polyolefins company is anti-
Answering kettle is two concatenated annular tube type reaction kettles so also becoming loop polypropylene technique, and gas phase reaction kettle uses dense fluidized
Bed form.The Spherizone technique homopolymerization kettle of Basell company is multizone circulating reactor, and gas phase reaction kettle uses
Dense-phase fluidized bed form.The Unipol technique of Dow Chemical (DOW) is using gas-phase fluidized-bed, and homopolymerization and copolymerization are concatenated
It is carried out in two fluidized beds.The Borstar PP technique of Borealis AG (Borealis) includes a ring canal reaction kettle and 2
~3 gas phase reaction kettles.The Innovene gas-phase process of Ineos group Pty Ltd (INEOS) is horizontal using two
Gas phase kettle reaction kettle, inside there is a mechanical stirring, and the residence time destribution of material is close to plug flow form.American AB B lomars group
(ABB-Lummus) Novolen gas-phase process can be produced with concatenated double kettles anti-using two vertical gas phase stirred tanks
Rush copolymer.The Hypol technique of three well oiling companies is using stirring liquid phase reactor kettle in such a way that gas phase reaction kettle combines.
The catalyst of propylene polymerization is usually Ziegler-Natta catalyst (Ziegler-Natta).Such catalyst is usual
Contain (1) ingredient of solid catalyst；(2) organo-aluminum compound cocatalyst component；(3) and it is optionally added into external electron donor group
Point.
Its main component of ingredient of solid catalyst is magnesium, titanium, halogen and internal electron donor, and available specific example is public
Be opened in application publication number be CN85100997, CN98126383.6, CN98111780.5, CN98126385.2,
In the patent document of CN93102795.0, CN00109216.2, CN99125566.6, CN99125567.4, CN02100900.7.
The organo-aluminum compound of cocatalyst component is usually alkyl aluminum compound, and preferably trialkylaluminium is such as: trimethyl aluminium,
Triethyl aluminum, triisobutyl aluminium, three n-butylaluminums, trioctylaluminum etc..Industrial usually used triethyl aluminum is as co-catalyst
Component.
External donor compound as optional catalyst component is usually organo-silicon compound, general formula RnSi
(OR') 4-n, 0 n≤3 < in formula, wherein R and R' are identical or different, and be each independently selected from alkyl, naphthenic base, aryl and
Halogenated alkyl, R may be halogen or hydrogen atom.Specifically, the organo-silicon compound are usual are as follows: cyclohexyl methyl dimethoxy
Base silane, dicyclopentyl dimethoxyl silane, diisopropyl dimethoxy silane, second, isobutyl dimethoxy silane etc..
With Ti/Al molar ratio computing, the solid catalyst activity component and organo-aluminum compound cocatalyst component of titaniferous it
Than that can be 1:25 to 1:1000.With Al/Si molar ratio computing, the ratio between the alkyl aluminum compound and the organo-silicon compound can
Think 3:1 to 100:1.
Three kinds of components of the Ziegler-Natta catalyst can be added directly into polymer reactor, can also be through
It crosses well known to industry complexing and/or prepolymerization in advance and then is added in reactor.The Ziegler-in loop polypropylene technique
After Natta catalyst and triethyl aluminum and organo-silicon compound are complexed in advance, continuous prepolymerization is carried out under the conditions of liquid-phase bulk.In advance
The temperature of polymerization is controlled at 0 to 40 DEG C.Also using similar approach handles catalyst in some the Gaseous Polymerization of PP.
It is produced in polyacrylic prepolymerization workshop section in annular-pipe reactor liquid phase noumenal method, catalyst and alkyl aluminum and electron
Body carries out pre-contact (pre- complexing) and forms active catalyst afterwards.Active catalyst can be such that propylene polymerize, and without being complexed in advance
Catalyst cannot make propylene occur polymerization reaction.Active catalyst is with unreacted alkyl aluminum and electron donor mixture through urging
Agent feed pipe enters in catalyst charge device, then mixes with propylene.Propylene enters pre-polymerization after mixing with active catalyst
It closes reactor and carries out prepolymerization.After prepolymerization, active catalyst and propylene with prepolymer enter annular-pipe reactor.
Active catalyst becomes after contacting propylene is suspended in propylene, the ever-increasing solid of polypropylene quality.Such as
The active catalyst of fruit is adhered on catalyst charge device or pipeline thereafter, and the polypropylene on catalyst is increasing, just
It can blocking catalyst feeding device.In fact catalyst charge device has been that the blocking in entire loop polypropylene plant is high-incidence
Point.Once blocking catalyst feeding device, entire polypropylene plant has just interrupted catalyst charge, and cannot remaining in operation, it is poly- to produce
Propylene.Its treating method can only dismantle catalyst charge device, manual removal tamper.Contain in active catalytic agent composition
A large amount of alkyl aluminum, and the great risk of alkyl aluminum, encountering water or air will occur to explode or burn.Therefore catalysis is being dismantled
Before agent feeding device, it is necessary to reduce the alkyl aluminium content in device to catalyst charge device repeated flushing with mineral oil.Institute
To dismantle and clear up all very wastes and great risk of catalyst charge device every time.
Those skilled in the art take many kinds of measures to reduce the blocking of catalyst charge device.For example increase
Rinse the flow of the propylene of catalyst charge device；Reduce the propylene temperature for rinsing catalyst charge device.But these measures are still
The blockage problem that catalyst charge device cannot thoroughly be solved is still necessary to protect using the method for preparing catalyst feeding device
Demonstrate,prove the continuous-stable operating of process units.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of polyolefin catalyst feeding devices.The catalyst charge device energy
The problem of blocking of catalyst charge device is enough reduced or avoided, therefore reduce dangerous catalyst charge device of dismantling and operate,
To achieve the purpose that guarantee device steady running, save the cost.
The present invention provides a kind of device of polyolefin catalyst charging comprising: reaction-ure feeding pipe, intercalation reaction object into
Catalyst charge intubation that is in expects pipe and extending to the downstream of reaction-ure feeding pipe, and setting is in catalyst charge intubation
Cyclone,
Wherein, cyclone will be for that will guide spiral flowing by the catalyst of cyclone.
In a specific embodiment, cyclone is configured to the torque blade for the axis torsion being intubated around catalyst charge,
Space between cyclone and catalyst charge intubation forms helical channel.
In a specific embodiment, the two sides of cyclone are connected to the internal perisporium of catalyst charge intubation, eddy flow
The inner space that catalyst charge is intubated is divided into two helical channels mutually entwined by device.
In a specific embodiment, one end of cyclone at least reverses 360 ° relative to the other end.
In a specific embodiment, reaction-ure feeding pipe includes main pipe closed at one end and is vertically connected at main pipe
Branch pipe, catalyst charge intubation be inserted into main pipe from the closed end of main pipe, catalyst charge intubation outlet end extend
Cross the junction of branch pipe and main pipe.
In a specific embodiment, catalyst charge intubation is coaxial with main pipe.
In a specific embodiment, reaction-ure feeding pipe is used to inject the solution of alpha-olefin or alpha-olefin.
In a specific embodiment, alpha-olefin is propylene, and catalyst charge intubation is urged for injecting active polypropylene
Agent.
In a specific embodiment, the distance of the end of the outlet end of catalyst charge intubation to cyclone is greater than 20
Millimeter, the internal perisporium and periphery wall of the part at the end to cyclone of the outlet end of catalyst charge intubation are smooth.
In a specific embodiment, the distance of the end of the outlet end of catalyst charge intubation to cyclone is greater than 30
Millimeter.
Reactant is common for ethylene or containing vinyl solution or propylene or containing propylene solution.
Present invention is particularly suitable for the catalyst charge devices that active catalyst is contacted with the solution of alpha-olefin or alpha-olefin.
It is liquid propene especially suitable in loop polypropylene technique, stating reactant under these conditions, which urges for polypropylene
Agent.When contacting propylene, polypropylene catalyst is active catalyst.
The good effect of the technology is: using the present invention program, can not do greatly to existing catalyst charge device
Structural change in the case where, be effectively improved mobility status in catalyst charge device, extend device stable operation cycle, reduce
Lead to the risk of parking because of the blocking of catalyst charge device.And reduces dangerous catalyst charge device and dismantle cleaning behaviour
Make, from reducing the risk of device, reduce the consumption of mineral oil and spare part, reduce the workload of maintenance device.
Detailed description of the invention
It will be hereinafter based on embodiment, and the present invention will be described in more detail with reference to attached drawing.Wherein:
Fig. 1 shows the complete section schematic diagram of the device of the charging of the polyolefin catalyst in one embodiment of the present of invention；
Fig. 2 shows the partial schematic sectional view of the device of the charging of the polyolefin catalyst in Fig. 1；
Specific embodiment
The present invention will be further described with reference to the accompanying drawings, the range being not intended to limit the invention.
As shown in Figure 1, the device of polyolefin catalyst charging includes tee pipe fitting 1, is inserted into tee pipe fitting 1 for being catalyzed
The catalyst charge intubation 2 and setting catalyst charge of agent charging are intubated the cyclone 4 in 2.Cyclone 4 guides catalyst
Spiral flowing.
Tee pipe fitting 1 include main pipe 11, be separately positioned on 11 both ends of main pipe first flange 111 and second flange 112 with
And the vertical branch pipe 12 connected on main pipe 11.Main pipe 11 is it is so structured that round tube.First flange 111 and second flange 112 construct
Cyclic shape.First flange 111 and second flange 112 is respectively welded in the both ends of main pipe 11, and makes first flange 111 and second
The axis of flange 112 is overlapped with the axis of main pipe 11.The internal diameter of first flange 111 is less than the internal diameter of main pipe 11.Second flange 112
Internal diameter be equal to main pipe 11 internal diameter.Second flange 112 is for connecting downstream pipe.First through hole is provided on the side wall of main pipe 11
113.Preferably, which is located at the middle part of main pipe 11.
Branch pipe 12 is it is so structured that round tube.The internal diameter of branch pipe 12 is equal to the diameter in the first through hole 113 of main pipe 11.Branch pipe
12 outlet end is welded on the periphery wall of main pipe 11, and the outlet end of branch pipe 12 is connected to each other with first through hole 113.It is preferred that
The internal diameter on ground, branch pipe 12 is equal with the internal diameter of main pipe 11.In this way, branch pipe 12 connects main pipe by the through-hole on 11 side plate of main pipe
11。
The through-hole of first flange 111 constitutes the first entrance of tee pipe fitting 1, and the arrival end of branch pipe 12 constitutes tee pipe fitting 1
Second entrance, the through-hole of second flange 112 constitutes the outlet of tee pipe fitting 1.Reactant is flowed into tee tube from second entrance
In part 1, catalyst charge intubation 2 can be from being inserted into tee pipe fitting 1 in first entrance.Reactant and catalyst are from threeway
The outlet of pipe fitting 1 flows out to downstream pipe 6.In this way, reactant flows into tee pipe fitting 1 from the arrival end of branch pipe 12, first is flowed through
Through-hole 113 flows into downstream pipe 6 using the through-hole of second flange 112.In this way, main pipe 11 and branch pipe 12 formed reactant into
Expects pipe.
Catalyst charge intubation 2 is configured to round tube of the outer diameter equal to the internal diameter of first flange 111.Catalyst charge intubation 2
Outlet end 21 be inserted into tee pipe fitting 1 from the through-hole of first flange 111, and to the downstream pipe of tee pipe fitting 16 extend.
The outlet end 21 of catalyst charge intubation 2 at least extended first through hole 113.Catalyst charge intubation 2 is coaxial with main pipe 11.
The setting of cyclone 4 is in catalyst charge intubation 2, it is preferable that cyclone 4 goes out close to catalyst charge intubation 2
Mouth end.
As shown in Fig. 2, cyclone 4 is configured to torque blade.Torque blade is the plate structure of torsion.Torque blade around catalyst into
The axis torsion of material intubation.The side of torque blade is to be intubated coaxial circular helix or conical spiral with catalyst charge.
In this way, the space between the internal perisporium of catalyst charge intubation and the plate face of torque blade forms spiral helicine channel.Catalyst warp
When crossing cyclone 4, due to the blocking of cyclone 4, catalyst is flowed along spiral helicine channel, and catalyst is guided into spiral
Shape flowing.When catalyst flows in the shape of a spiral to flow out from the nozzle of catalyst charge intubation 2, catalyst is not easy to be sticked to catalyst
The inner wall of charging intubation 2 or the open end of catalyst charge intubation 2, reactant are also less prone to play a reversed role and insert into catalyst charge
Pipe 2, to avoid blocking catalyst charging intubation 2.
Preferably, the two sides of cyclone 4 are connected to the internal perisporium of the catalyst charge intubation, and cyclone 4 will be catalyzed
The inner space of agent charging intubation 2 is divided into two helical channels mutually entwined.It is highly preferred that one end of cyclone
360 ° are at least reversed relative to the other end.
Preferably, the inside and outside peripheral wall of the part at the end to cyclone 4 of the outlet end 21 of catalyst charge intubation 2 is beaten
Ground smooth.The distance of the end of the outlet end 21 of catalyst charge intubation 2 to cyclone 4 is greater than 20 millimeters, can reduce in this way
The adherency of catalyst and reactant in catalyst charge intubation 2.Preferably greater than 30 millimeters, more preferably greater than 40 millimeters.
The device further includes cannula holder 3.First flange 111 is arranged in away from second flange 112 in cannula holder 3
Side.Cannula holder 3 includes clamping part 32 and the support portion 31 for supporting clamping part 32.The middle part of clamping part 32 is provided with logical
Hole.The arrival end of catalyst charge intubation 2 is plugged into the through-hole from the side of clamping part 32 and is fixed on clamping part 32.Folder
It holds and is provided with gasket seal between portion 32 and first flange 111, be connected by screw bolts between clamping part 32 and first flange 111.
In this way, clamping part 32 and first flange 111 are fixed with each other, and there is preferable sealing effect between the two.Support portion
31 one end are fixed on the other end on clamping part 32 and are fixed on the rack, and are as a result, fixed against catalyst charge intubation 2.
The device further includes catalyst inlet threeway 5.Catalyst inlet threeway 5 includes three nozzles.Between three nozzles
It is interconnected.Catalyst inlet threeway 5 is arranged in cannula holder 3 and deviates from the side of tee pipe fitting 1, and makes one of nozzle
It is connected with the entrance of the catalyst charge intubation 2 in cannula holder 3.Other two nozzle of catalyst inlet threeway 5 is distinguished
Connect the feeding pipe of flushing oil and catalyst.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts
Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.
Claims (8)
1. a kind of device of polyolefin catalyst charging characterized by comprising reaction-ure feeding pipe is inserted into the reactant
Catalyst charge intubation that is in feed pipe and extending to the downstream of the reaction-ure feeding pipe, and be arranged in the catalyst
Cyclone in charging intubation,
Wherein, the reaction-ure feeding pipe is used to inject the solution of alpha-olefin or alpha-olefin, and the alpha-olefin is propylene, the rotation
Device is flowed for spiral flowing will to be guided by the catalyst of the cyclone, and the catalyst is active catalyst, described
Active catalyst is that polypropylene catalyst and alkyl aluminum and electron donor carry out the active polypropylene catalyst formed after being complexed in advance.
2. the apparatus according to claim 1, which is characterized in that the cyclone is configured to be intubated around the catalyst charge
Axis torsion torque blade, the cyclone and the catalyst charge intubation between space formed helical channel.
3. the apparatus of claim 2, which is characterized in that the two sides of the cyclone be connected to the catalyst into
Expect that the inner space that the catalyst charge is intubated is divided into two institutes mutually to entwine by the internal perisporium of intubation, the cyclone
State helical channel.
4. device according to claim 3, which is characterized in that at least reversed relative to the other end one end of the cyclone
360°。
5. device according to any one of claim 1 to 4, which is characterized in that the reaction-ure feeding pipe includes one end
Closed main pipe and the branch pipe for being vertically connected at the main pipe, the catalyst charge are intubated from the closed end of the main pipe
It is inserted into the main pipe, the outlet end of the catalyst charge intubation extended the junction of the branch pipe Yu the main pipe.
6. device according to claim 5, which is characterized in that the catalyst charge intubation is coaxial with the main pipe.
7. device according to any one of claim 1 to 4, which is characterized in that the outlet of the catalyst charge intubation
The distance of the end at end to cyclone is greater than 20 millimeters, the part at the end to cyclone of the catalyst charge intubation
Internal perisporium and periphery wall it is smooth.
8. device according to claim 7, which is characterized in that the end of the catalyst charge intubation to cyclone
Distance be greater than 30 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422837.XA CN106345371B (en) | 2015-07-17 | 2015-07-17 | A kind of device of polyolefin catalyst charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422837.XA CN106345371B (en) | 2015-07-17 | 2015-07-17 | A kind of device of polyolefin catalyst charging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106345371A CN106345371A (en) | 2017-01-25 |
| CN106345371B true CN106345371B (en) | 2019-07-19 |
Family
ID=57842304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510422837.XA Active CN106345371B (en) | 2015-07-17 | 2015-07-17 | A kind of device of polyolefin catalyst charging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106345371B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170001A (en) * | 1996-06-06 | 1998-01-14 | 联合碳化化学品及塑料技术公司 | Method for feeding liquid catalyst to fluidized bed polymerization reactor |
| CN101489663A (en) * | 2006-07-20 | 2009-07-22 | 西湖朗维尤公司 | Process and apparatus for olefin polymerization in a fluidized bed reactor |
| CN102170964A (en) * | 2008-10-03 | 2011-08-31 | 英尼奥斯欧洲有限公司 | Process for the introduction of a polymerisation catalyst into a gas-phase fluidised bed |
| CN203036187U (en) * | 2013-01-04 | 2013-07-03 | 徐明冬 | Self-cleaning pipeline system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9138706B2 (en) * | 2008-04-22 | 2015-09-22 | Fina Technology, Inc. | Method and apparatus for addition of an alkali metal promoter to a dehydrogenation catalyst |
-
2015
- 2015-07-17 CN CN201510422837.XA patent/CN106345371B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170001A (en) * | 1996-06-06 | 1998-01-14 | 联合碳化化学品及塑料技术公司 | Method for feeding liquid catalyst to fluidized bed polymerization reactor |
| CN101489663A (en) * | 2006-07-20 | 2009-07-22 | 西湖朗维尤公司 | Process and apparatus for olefin polymerization in a fluidized bed reactor |
| CN102170964A (en) * | 2008-10-03 | 2011-08-31 | 英尼奥斯欧洲有限公司 | Process for the introduction of a polymerisation catalyst into a gas-phase fluidised bed |
| CN203036187U (en) * | 2013-01-04 | 2013-07-03 | 徐明冬 | Self-cleaning pipeline system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106345371A (en) | 2017-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8735513B2 (en) | Reactor for propylene polymerization and process for producing propylene polymer | |
| CN103097012B (en) | For the method and apparatus of alkene gas-phase polymerization | |
| CN105664803A (en) | Process for feeding a catalyst in a polymerization reactor | |
| KR20030034195A (en) | Method for preactivating catalysts | |
| CN106345372B (en) | A kind of device of polyolefin catalyst charging | |
| KR102663624B1 (en) | Remote pressure sensing for polymer reactor control | |
| CN106345371B (en) | A kind of device of polyolefin catalyst charging | |
| KR20010111596A (en) | Method for producing polyolefin and gas phase polymerization apparatus | |
| CN102399332A (en) | Propylene polymerization production process by loop reactor liquid phase bulk method | |
| CN102399333A (en) | Propylene polymerization production process of loop reactor | |
| US20220234021A1 (en) | A process and a multi-stage reactor assembly for the production of polyolefins | |
| EP2294095B1 (en) | Process for the production of an alpha-olefin polymer | |
| JP6658089B2 (en) | Method for producing polyolefin | |
| US10988553B2 (en) | Catalyst pre-contact device for continuous polymerization of olefins and method for catalyst pre-contact | |
| US11708425B2 (en) | Polymerization reactor system comprising at least one withdrawal valve | |
| US9109058B2 (en) | Method for improving ethylene polymerization reactions | |
| HUE026900T2 (en) | Process for preparing a polyethylene product in a polymerization loop reactor | |
| JP2011116970A (en) | Propylene polymerization reaction apparatus and manufacturing method for propylene based polymer | |
| JP2015091583A (en) | Flexible molded cover plate structure for pressure containment | |
| CN109456429B (en) | Gas phase method for producing polypropylene | |
| JP5032132B2 (en) | Apparatus and method for optimizing the injection of reactants into a reactor | |
| CN217910333U (en) | Device for preventing catalyst from depositing and accumulating at bottom of crude oil catalytic cracking | |
| CN103857709A (en) | Loop reactor providing an advanced production split control | |
| CN109456426B (en) | Horizontal agitated bed gas phase method for producing polypropylene | |
| CN105080430B (en) | One kind intercepts liquid distributor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |