CN101443108A - Swirling fluidized-bed reactors for olefin polymerization - Google Patents
Swirling fluidized-bed reactors for olefin polymerization Download PDFInfo
- Publication number
- CN101443108A CN101443108A CNA2007800168960A CN200780016896A CN101443108A CN 101443108 A CN101443108 A CN 101443108A CN A2007800168960 A CNA2007800168960 A CN A2007800168960A CN 200780016896 A CN200780016896 A CN 200780016896A CN 101443108 A CN101443108 A CN 101443108A
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- CN
- China
- Prior art keywords
- fluid
- bed
- reactor
- fluidized
- angle
- 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.)
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- 150000001336 alkenes Chemical class 0.000 title claims abstract description 10
- 238000006116 polymerization reaction Methods 0.000 title claims description 15
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 title claims description 5
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims description 2
- 230000000379 polymerizing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- BKOOMYPCSUNDGP-UHFFFAOYSA-N 2-methylbut-2-ene Chemical group CC=C(C)C BKOOMYPCSUNDGP-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000011954 Ziegler–Natta catalyst Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- -1 propylene, butylene Chemical group 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Polymerisation Methods In General (AREA)
Abstract
A method for polymerizing olefins in a fluidized-bed reactor is provided. The method involves introducing a fluid into the fluidized-bed reactor at an angle and amount sufficient to induce one or more swirls in the fluidized bed in the reactor.
Description
Invention field
[0001] generality of the present invention relates to the method that is used at the fluidized-bed reactor olefin polymerization.This fluid bed have one or more whirlpools that cause with prevent or the inhibitory reaction device in silt up.
Background of invention
[0002] in the olefinic polymerization fluidized-bed reactor, fluidisation is to realize by the gas that upwards flows.The grid that is positioned at reactor bottom is used for equably fluidization gas distribution by reactor cross-section and prevent that solid from entering gas supply pumping chamber.A problem of puzzlement industry is sheets of powder gathering on reactor wall.When these sheets when reactor wall comes off, they have the possibility of barrier gas distribution grid major part, and therefore interrupt reactor flow or even stop up reactor.
[0003] therefore, there is demand at the hydrodynamics that is used for changing the olefinic polymerization fluid bed with the field that reduces knot sheet possibility and improve the method for mixing.
Summary of the invention
[0004] in brief, the invention provides a kind of method that is used at the fluidized-bed reactor olefin polymerization.This method comprises to be enough to the causing angle of one or more whirlpools and the step that amount is introduced fluid fluidized-bed reactor in the fluid bed of reactor.
Detailed Description Of The Invention
[0005], can in the olefinic polymerization fluidized-bed reactor, tie sheet by fluid being incorporated into to reduce in the fluidized-bed reactor or prevent with the angle that is enough in the fluid bed of reactor, to cause one or more whirlpools and amount according to the present invention.Rotation in the fluid bed will improve the tangential velocity of reactor wall place solid, improve near the shearing force of wall thus and reduce the generation that reactor wall is tied sheet.
Another benefit of [0006] rotating in fluid bed will reduce the amount of the particle that goes out from the elutriation of fluid bed top.In paradigmatic system, the particle that leaves the fluid bed top may cause and is used to cool off and with the pipe-line system of Returning reactor inlet and the silting up of equipment of fluidizing gas.
[0007] preferred, do not cause one or more whirlpools by mechanical device such as agitator or rotating blade or blade.This device may make the operation of the complicated and restriction bed of the design of bed.
[0008] the inventive method can use catalyst known in the art such as Ziegler-Natta catalyst and metallocene to be used for the multiple alkene of polymerization.Suitable polymerization single polymerization monomer comprises alkene, as ethene, propylene, butylene, amylene, hexene etc. and combination thereof.
[0009] fluid is incorporated in the fluid bed is not particularly limited in the mode that causes one or more whirlpools.For example, can introduce fluid by the distribution plate that is positioned at reactor bottom.Distribution plate can have the perforation of introducing fluid with the angle that is different from vertical direction.Alternatively, distribution plate can have to be different from deflector or the nozzle of angle introducing fluid to cause whirlpool of vertical direction.
The layout of [0010] perforation, deflector and/or nozzle is not particularly limited, as long as they can effectively cause one or more whirlpools in fluid bed.For example, perforation, deflector and/or nozzle can take the identical angle of outlet and direction to be arranged in one or more concentric circles.Alternatively, perforation, deflector and/or nozzle can be arranged in more than in one the non-concentric circles, to cause a plurality of whirlpools in bed.
[0011] fluid also can be by being positioned at or introducing to cause whirlpool along the one or more syringes or the nozzle of fluid bed.
[0012] in one embodiment, whole fluidized bed swirls are in a direction.
[0013] being incorporated in the fluid bed can be according to used particular polymeric system and angle and the quantitative changeization of introducing fluid with the angle and the amount of the fluid that causes one or more whirlpools.Usually, can be until almost vertical angle fluid be incorporated in the reactor with respect to 90 ° of vertical direction.The amount of introducing at a certain angle with the fluid that causes one or more whirlpools can change.This amount can be determined by normal experiment by those skilled in the art.
[0014] is used to cause that the fluid of one or more whirlpools can be gas or liquid.Typically, fluid can be a gas, and gas can be one or more gases that are generally used for olefinic polymerization, for example nitrogen, hydrogen, alkene and alkane.
[0015] in another embodiment, except causing one or more whirlpools, also can tie sheet with further inhibition or minimizing by the interior fluidizing velocity of periodic variation reactor.Changing fluidizing velocity is recorded in the common unsettled U.S. Patent application to prevent or to suppress silting up in the olefinic polymerization fluidized-bed reactor, this application requires submit to and the priority that be entitled as the interim U.S. Patent application 60/800,826 of " impulse modulation olefinic polymerization fluidized-bed reactor (Pulsing Olefin Polymerization Fluidized-Bed Reactors) (attorney docket 80263) " on May 16th, 2006; Be incorporated herein its content as a reference.
[0016] the present invention is described with particular reference to its preferred embodiment, but should be appreciated that, can change and revise within the spirit and scope of the present invention.
Claims (9)
1. be used for method at the fluidized-bed reactor olefin polymerization.This method comprises:
To be enough to causing that in the fluid bed of the reactor angle of one or more whirlpools and amount are incorporated into fluid in the fluidized-bed reactor.
2. according to the process of claim 1 wherein that described fluid comprises gas.
3. according to the method for claim 2, wherein said gas comprises alkene.
4. according to the process of claim 1 wherein that described fluid comprises liquid.
5. according to the process of claim 1 wherein that whole fluid bed becomes whirlpool.
6. according to the process of claim 1 wherein that described fluid is by being positioned at the distribution plate introducing of reactor bottom.
7. according to the method for claim 6, wherein said distribution plate comprises the perforation of introducing fluid with the angle that is different from vertical direction.
8. according to the method for claim 6, wherein said distribution plate comprises deflector or the nozzle of introducing fluid with the angle that is different from vertical direction.
9. according to the process of claim 1 wherein that described fluid is by being positioned at or introducing along the one or more syringes or the nozzle of fluid bed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80082606P | 2006-05-16 | 2006-05-16 | |
| US60/800,826 | 2006-05-16 | ||
| US11/585,050 | 2006-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101443108A true CN101443108A (en) | 2009-05-27 |
Family
ID=40727112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800168960A Pending CN101443108A (en) | 2006-05-16 | 2007-05-11 | Swirling fluidized-bed reactors for olefin polymerization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101443108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998994A (en) * | 2017-12-28 | 2018-05-08 | 宜春万申制药机械有限公司 | A kind of energy saving whirlpool fluid bed |
-
2007
- 2007-05-11 CN CNA2007800168960A patent/CN101443108A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998994A (en) * | 2017-12-28 | 2018-05-08 | 宜春万申制药机械有限公司 | A kind of energy saving whirlpool fluid bed |
| CN107998994B (en) * | 2017-12-28 | 2021-04-23 | 宜春万申制药机械有限公司 | Energy-saving swirling fluidized bed |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090527 |