CN207567151U - A kind of propylene multistage polymerization device - Google Patents
A kind of propylene multistage polymerization device Download PDFInfo
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- CN207567151U CN207567151U CN201721338888.5U CN201721338888U CN207567151U CN 207567151 U CN207567151 U CN 207567151U CN 201721338888 U CN201721338888 U CN 201721338888U CN 207567151 U CN207567151 U CN 207567151U
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Abstract
A kind of propylene multistage polymerization device, including prepolymerization unit, liquid-phase polymerization unit, gas phase polymerization unit and the 4th polymerisation unit, wherein, including two pre-polymerization reactors being arranged in parallel, two liquid-phase polymerization devices, two propylene condensers, two liquid separation tanks, the two circulating air wind turbines of corresponding setting, gas phase polymerization unit and the 4th polymerisation unit include horizontal reactor, cyclone separator, condenser, liquid separation tank, propylene lime set pump and circulating air wind turbine；The mixed material outlet of 4th polymerisation unit and the polymer exit of cyclone separator, which converge, is connected to downstream gas solid separation system.The utility model is using Liquid-phase reactor+series connection gas-phase reactor in parallel, differentiation control, production homopolypropylene, binary atactic copolymerized polypropene, ternary polymerized polypropylene or the impact copolymer polypropylene with high rubber content can be carried out to propylene polymerization system.
Description
Technical field
The utility model belongs to high molecular material preparation facilities field, and in particular to a kind of propylene multistage polymerization device.
Background technology
In existing propylene polymerization device, each reactor is mainly operated using serial operation or single reactor, can only be adopted
With a kind of catalyst system, and monomer composition difference is smaller between each reactor, and mechanical properties of polymer and processing performance promotion have
Limit.
Utility model content
The purpose of this utility model is to provide a kind of propylene multistage polymerization device, using Liquid-phase reactor+string in parallel
Join gas-phase reactor, realize the differentiation control to reaction system, reduce the content of monomer in polymer, control waving for polymer
Hair property content of organics, polymer grain size are evenly distributed, and it is common can to produce homopolypropylene, binary atactic copolymerized polypropene, ternary
Poly- polypropylene or the impact copolymer polypropylene with high rubber content.
In order to achieve the above object, the utility model provides following technical solution：
A kind of propylene multistage polymerization device, including：
Prepolymerization unit, the pre-polymerization reactor being arranged in parallel including two, the pre-polymerization reactor set material
Entrance and outlet；
Liquid-phase polymerization unit, including two liquid-phase polymerizations being correspondingly arranged respectively with two pre-polymerization reactors
Device, two propylene condensers, two liquid separation tanks and two circulating air wind turbines；Wherein, liquid-phase polymerization device is equipped with material inlet
And outlet, gas-phase propene outlet, liquid propylene entrance, gas-phase propene entrance；It is gentle that liquid separation tank is equipped with material inlet, liquid-phase outlet
Mutually export；
The material inlet of the material outlet connection liquid-phase polymerization device of the pre-polymerization reactor, the liquid phase polymerization are anti-
The gas-phase propene of device is answered to export connection propylene condenser, is then connected to the material inlet of liquid separation tank, the liquid-phase outlet of liquid separation tank connects
It is connected to the liquid propylene entrance of liquid-phase polymerization device, it is anti-that the gaseous phase outlet of liquid separation tank through circulating air wind turbine is connected to liquid phase polymerization
Answer the gas-phase propene entrance of device；
Gas phase polymerization unit, including horizontal reactor, cyclone separator, condenser, liquid separation tank, propylene lime set pump and
Circulating air wind turbine；Wherein, the horizontal reactor sets two material inlets, gaseous phase outlet, liquid propylene entrance, gas-phase propene entrance
And mixed material outlet；The cyclone separator sets gas phase entrance, gaseous phase outlet and polymer exit；Liquid separation tank enters equipped with material
Mouth, liquid-phase outlet and gaseous phase outlet；Wherein,
The material outlet of described two liquid-phase polymerization devices is respectively connected to two material inlets of horizontal reactor, horizontal
The gaseous phase outlet of reactor is connected to the gas phase entrance of cyclone separator, and the gaseous phase outlet of cyclone separator connects condenser, then
The material inlet of liquid separation tank is connected to, the liquid-phase outlet of liquid separation tank is connected to the liquid propylene of horizontal reactor through propylene lime set pump
Entrance, the gaseous phase outlet of liquid separation tank are connected to the gas-phase propene entrance of horizontal reactor through circulating air wind turbine；
4th polymerisation unit, including horizontal reactor, cyclone separator, condenser, liquid separation tank, propylene lime set pump and
Circulating air wind turbine；Wherein, the horizontal reactor set material inlet, gaseous phase outlet, liquid propylene entrance, gas-phase propene entrance and
Mixed material exports；The cyclone separator sets gas phase entrance, gaseous phase outlet and polymer exit；Liquid separation tank enters equipped with material
Mouth, liquid-phase outlet and gaseous phase outlet；
Polymer exit and its horizontal reactor the material outlet connection of the gas phase polymerization unit cyclone separator
To the horizontal reactor material inlet of the 4th polymerisation unit, in the 4th polymerisation unit, the gas phase of horizontal reactor goes out
Mouth is connected to the gas phase entrance of cyclone separator, and the gaseous phase outlet of the cyclone separator connects the condenser of the unit, reconnects
To the material inlet of the unit liquid separation tank, it is anti-that the liquid-phase outlet of the unit liquid separation tank through propylene lime set pump is connected to the unit horizontal
The liquid propylene entrance of device is answered, the gaseous phase outlet of the unit liquid separation tank is connected to the unit horizontal reactor through circulating air wind turbine
Gas-phase propene entrance, the mixed material outlet of the 4th polymerisation unit and the polymer exit of cyclone separator, which converge, to be connected to
Downstream gas solid separation system.
Preferably, the prepolymerization unit further includes the propylene cooler being correspondingly arranged with pre-polymerization reactor, and third
The material inlet of alkene cooler and pre-polymerization reactor connects.
Further, in the liquid-phase polymerization unit, gas phase polymerization unit and the 4th polymerisation unit, respectively
The pipeline of make-up ethylene is additionally provided on the gaseous phase outlet pipeline of liquid separation tank.
Preferably, the liquid-phase polymerization unit is additionally provided with supplement butylene on the liquid-phase outlet pipeline of each liquid separation tank
Pipeline.
Also, in the gas phase polymerization unit and the 4th polymerisation unit, the liquid-phase outlet pipeline of each liquid separation tank
On be additionally provided with supplement butylene and/or liquid propylene pipeline.
The utility model is using Liquid-phase reactor+series connection gas-phase reactor in parallel, before liquid-phase polymerization, first in pre-polymerization
It closes in reactor and carries out prepolymerization, make catalyst granules fully wrapped around by appropriate polymer, increase propylene and connect with catalyst
Resistance is touched, for controlling reaction speed of the catalyst in liquid-phase polymerization device, catalyst can be prevented anti-in reactor internal cause
Excessively acutely it should produce a large amount of fine powders.
Compared with prior art, the utility model has the advantages that：
The utility model can be used using Liquid-phase reactor+series connection gas-phase reactor in parallel, two Liquid-phase reactor
Same catalyst system and composition, produce the polymers for general use of Narrow Molecular Weight Distribution, and can be by two Liquid-phase reactor
It is middle to add in two different catalyst systems, and wide molecule is produced using different polymerizable monomer compositions in Liquid-phase reactor
Measure the polymer such as distribution, high fluidity, highly crystalline.Meanwhile the gas-phase reactor of series connection can produce the anti-impact of high rubber content and be total to
Poly- polypropylene by improving polymerization temperature, can reduce the content of monomer in polymer, the volatile organic matter of polymer is controlled to contain
Amount, using the multi-stage polymeric device of the utility model, can realize differentiation control in the reactor.
Using the utility model, homopolypropylene, binary atactic copolymerized polypropene, ternary polymerized polypropylene or tool can be produced
There is the impact copolymer polypropylene of high rubber content, the polymer grain size of preparation is evenly distributed, has low-volatile content of organics,
Wide molecular weight distribution and excellent mechanical property, processing performance.
Description of the drawings
Fig. 1 is the structure diagram of the utility model embodiment.
Specific embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.
Referring to Fig. 1, the propylene multistage polymerization device of the utility model, including：
Prepolymerization unit 1, including two pre-polymerization reactors being arranged in parallel 11,11', with pre-polymerization reactor pair
Propylene cooler 10, the 10' that should be set, the pre-polymerization reactor 11,11' set material inlet and outlet, propylene cooler 10,
10' is connect with the material inlet of pre-polymerization reactor 11,11'；
Liquid-phase polymerization unit 2, including two liquid phases being correspondingly arranged respectively with two pre-polymerization reactors 11,11'
Polymer reactor 21,21', two propylene condensers 22,22', two liquid separation tanks 23,23', two circulating air wind turbines 24,24'；
Wherein, liquid-phase polymerization device 21,21' are equipped with material inlet and outlet, gas-phase propene outlet, liquid propylene entrance, gas phase third
Alkene entrance；Liquid separation tank 23,23' are equipped with material inlet, liquid-phase outlet and gaseous phase outlet；
The pre-polymerization reactor 11, the material outlet connection liquid-phase polymerization device 21 of 11', 21' material inlet, institute
Liquid-phase polymerization device 21, the gas-phase propene outlet connection propylene condenser 22 of 21', 22' are stated, is then connected to liquid separation tank 23,23'
Material inlet, liquid separation tank 23,23' liquid-phase outlet be connected to the liquid propylene entrance of liquid-phase polymerization device 21,21', point
Flow container 23,23' gaseous phase outlet be connected to liquid-phase polymerization device 21 through circulating air wind turbine 24,24', the gas-phase propene of 21' enters
Mouthful；
Gas phase polymerization unit 3, including horizontal reactor 31, cyclone separator 32, condenser 33, liquid separation tank 34, third
Alkene lime set pump 35, circulating air wind turbine 36；Wherein, the horizontal reactor 31 sets two material inlets, gaseous phase outlet, liquid propylene and enters
Mouth, gas-phase propene entrance and mixed material outlet；The cyclone separator 32 sets gas phase entrance, gaseous phase outlet and polymer and goes out
Mouthful；Liquid separation tank 34 is equipped with material inlet, liquid-phase outlet and gaseous phase outlet；Wherein,
Described two liquid-phase polymerization devices 21,21' material outlet be respectively connected to two materials of horizontal reactor 31
Entrance, the gaseous phase outlet of horizontal reactor 31 are connected to the gas phase entrance of cyclone separator 32, and the gas phase of cyclone separator 32 goes out
Mouth connection condenser 33, is then connected to the material inlet of liquid separation tank 34, and the liquid-phase outlet of liquid separation tank 34 connects through propylene lime set pump 35
The liquid propylene entrance of horizontal reactor is connected to, the gaseous phase outlet of liquid separation tank 34 is connected to horizontal reactor through circulating air wind turbine 36
31 gas-phase propene entrance；
4th polymerisation unit 4, including horizontal reactor 41, cyclone separator 42, condenser 43, liquid separation tank 44, third
Alkene lime set pump 45, circulating air wind turbine 46；Wherein, the horizontal reactor 41 sets material inlet, gaseous phase outlet, liquid propylene and enters
Mouth, gas-phase propene entrance and mixed material outlet；The cyclone separator 42 sets gas phase entrance, gaseous phase outlet and polymer and goes out
Mouthful；Liquid separation tank 44 is equipped with material inlet, liquid-phase outlet and gaseous phase outlet；
31 material outlet of polymer exit and its horizontal reactor of 3 cyclone separator 32 of gas phase polymerization unit
It is connected to the material inlet of 4 horizontal reactor 41 of the 4th polymerisation unit, in the 4th polymerisation unit 4, horizontal reactor
41 gaseous phase outlet is connected to the gas phase entrance of cyclone separator 42, and the gaseous phase outlet of the cyclone separator 42 connects the unit
Condenser 43 is then connected to the material inlet of the unit liquid separation tank 44, and the liquid-phase outlet of the unit liquid separation tank 44 is through propylene lime set
Pump 45 is connected to the liquid propylene entrance of the unit horizontal reactor 41, and the gaseous phase outlet of the unit liquid separation tank 44 is through circulating air wind
Machine 46 is connected to the gas-phase propene entrance of the unit horizontal reactor 41, the mixed material outlet of the 4th polymerisation unit 4 and
The polymer exit of cyclone separator 42, which converges, is connected to downstream gas solid separation system.
The utility model adds in hydrogen according to polymer molecular weight and melting means requirement, when producing atactic copolymerized polypropene,
It also needs to add in ethylene or butylene in the 4th section of gas-phase polymerization reactor；When producing impact copolymer polypropylene, in the 4th section of gas
Phase polymerization reaction device needs to add in ethylene.
Claims (6)
1. a kind of propylene multistage polymerization device, which is characterized in that including：
Prepolymerization unit, the pre-polymerization reactor being arranged in parallel including two, the pre-polymerization reactor set material inlet
And outlet；
Liquid-phase polymerization unit, including be correspondingly arranged respectively with two pre-polymerization reactors two liquid-phase polymerization devices,
Two propylene condensers, two liquid separation tanks and two circulating air wind turbines；Wherein, liquid-phase polymerization device is equipped with material inlet and goes out
Mouth, gas-phase propene outlet, liquid propylene entrance, gas-phase propene entrance；Liquid separation tank goes out equipped with material inlet, liquid-phase outlet and gas phase
Mouthful；
The material inlet of the material outlet connection liquid-phase polymerization device of the pre-polymerization reactor, the liquid-phase polymerization device
Gas-phase propene outlet connection propylene condenser, be then connected to the material inlet of liquid separation tank, the liquid-phase outlet of liquid separation tank is connected to
The liquid propylene entrance of liquid-phase polymerization device, the gaseous phase outlet of liquid separation tank are connected to liquid-phase polymerization device through circulating air wind turbine
Gas-phase propene entrance；
Gas phase polymerization unit, including horizontal reactor, cyclone separator, condenser, liquid separation tank, propylene lime set pump and cycle
Gas wind turbine；Wherein, the horizontal reactor sets two material inlets, gaseous phase outlet, liquid propylene entrance, gas-phase propene entrance and mixes
Close material outlet；The cyclone separator sets gas phase entrance, gaseous phase outlet and polymer exit；Liquid separation tank be equipped with material inlet,
Liquid-phase outlet and gaseous phase outlet；Wherein,
The material outlet of described two liquid-phase polymerization devices is respectively connected to two material inlets of horizontal reactor, horizontal reacting
The gaseous phase outlet of device is connected to the gas phase entrance of cyclone separator, and the gaseous phase outlet connection condenser of cyclone separator reconnects
To the material inlet of liquid separation tank, the liquid propylene that the liquid-phase outlet of liquid separation tank is connected to horizontal reactor through propylene lime set pump enters
Mouthful, the gaseous phase outlet of liquid separation tank is connected to the gas-phase propene entrance of horizontal reactor through circulating air wind turbine；
4th polymerisation unit, including horizontal reactor, cyclone separator, condenser, liquid separation tank, propylene lime set pump and cycle
Gas wind turbine；Wherein, the horizontal reactor sets material inlet, gaseous phase outlet, liquid propylene entrance, gas-phase propene entrance and mixing
Material outlet；The cyclone separator sets gas phase entrance, gaseous phase outlet and polymer exit；Liquid separation tank is equipped with material inlet, liquid
Mutually outlet and gaseous phase outlet；
The polymer exit and its horizontal reactor material outlet of the gas phase polymerization unit cyclone separator are connected to
The horizontal reactor material inlet of four polymerisation units, in the 4th polymerisation unit, the gaseous phase outlet of horizontal reactor connects
The gas phase entrance of cyclone separator is connected to, the gaseous phase outlet of the cyclone separator connects the condenser of the unit, is then connected to this
The material inlet of unit liquid separation tank, the liquid-phase outlet of the unit liquid separation tank are connected to the unit horizontal reactor through propylene lime set pump
Liquid propylene entrance, the gaseous phase outlet of the unit liquid separation tank is connected to the gas phase of the unit horizontal reactor through circulating air wind turbine
Propylene entrance, the mixed material outlet of the 4th polymerisation unit and the polymer exit of cyclone separator, which converge, is connected to downstream
Gas solid separation system.
2. propylene multistage polymerization device according to claim 1, which is characterized in that the prepolymerization unit further include with
The material inlet connection of the propylene cooler that pre-polymerization reactor is correspondingly arranged, propylene cooler and pre-polymerization reactor.
3. propylene multistage polymerization device according to claim 1, which is characterized in that the liquid-phase polymerization unit, gas phase
In polymerisation unit and the 4th polymerisation unit, the pipe of make-up ethylene is additionally provided on the gaseous phase outlet pipeline of each liquid separation tank
Line.
4. according to claims 1 or 2 or the 3 propylene multistage polymerization devices, which is characterized in that the liquid-phase polymerization list
Member is additionally provided with the pipeline of supplement butylene on the liquid-phase outlet pipeline of each liquid separation tank.
5. propylene multistage polymerization device according to claim 1, which is characterized in that the gas phase polymerization unit and
In four polymerisation units, the pipeline of supplement butylene and/or liquid propylene is additionally provided on the liquid-phase outlet pipeline of each liquid separation tank.
6. propylene multistage polymerization device according to claim 4, which is characterized in that the gas phase polymerization unit and
In four polymerisation units, the pipeline of supplement butylene and/or liquid propylene is additionally provided on the liquid-phase outlet pipeline of each liquid separation tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721338888.5U CN207567151U (en) | 2017-10-18 | 2017-10-18 | A kind of propylene multistage polymerization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721338888.5U CN207567151U (en) | 2017-10-18 | 2017-10-18 | A kind of propylene multistage polymerization device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107602739A (en) * | 2017-10-18 | 2018-01-19 | 浙江卫星能源有限公司 | The multi-stage polymeric process and device of a kind of propylene |
| CN111718437A (en) * | 2020-06-11 | 2020-09-29 | 国家能源集团宁夏煤业有限责任公司 | Copolymerization reaction system and method for preparing impact-resistant polypropylene |
-
2017
- 2017-10-18 CN CN201721338888.5U patent/CN207567151U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107602739A (en) * | 2017-10-18 | 2018-01-19 | 浙江卫星能源有限公司 | The multi-stage polymeric process and device of a kind of propylene |
| CN111718437A (en) * | 2020-06-11 | 2020-09-29 | 国家能源集团宁夏煤业有限责任公司 | Copolymerization reaction system and method for preparing impact-resistant polypropylene |
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