KR101613651B1 - Apparatus for continuous gas phase alpha olefin polymerization - Google Patents

Apparatus for continuous gas phase alpha olefin polymerization Download PDF

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KR101613651B1
KR101613651B1 KR1020150130464A KR20150130464A KR101613651B1 KR 101613651 B1 KR101613651 B1 KR 101613651B1 KR 1020150130464 A KR1020150130464 A KR 1020150130464A KR 20150130464 A KR20150130464 A KR 20150130464A KR 101613651 B1 KR101613651 B1 KR 101613651B1
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gas
unit
polymerization
liquid
barrier
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KR1020150130464A
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Korean (ko)
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신상홍
김재호
임성수
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롯데케미칼 주식회사
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Priority to PCT/KR2016/010270 priority patent/WO2017048019A1/en

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/01—Processes of polymerisation characterised by special features of the polymerisation apparatus used
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/34—Polymerisation in gaseous state
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F6/00—Post-polymerisation treatments
    • C08F6/06—Treatment of polymer solutions
    • C08F6/12—Separation of polymers from solutions

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

The present invention relates to a continuous gas-phase polymerization apparatus for alpha olefin, comprising: a first polymerization unit for firstly polymerizing a polymer; a second polymerization unit which is connected to the first polymerization unit, and secondarily polymerizes the polymer; a gas-solid separation unit which is formed on an upper side of the second polymerization unit, and separates gas and solid; a liquid barrier which is formed on a boundary of the gas-solid separation unit and the second polymerization unit, and is mixed with a polymer where gas is separated by the gas-solid separation unit, and moves the polymer; a barrier unit which transfers the liquid barrier mixed with the polymer from the gas-solid separation unit to the second polymerization unit; and a by-pass unit in which one end is connected to the second polymerization unit, and the other end is connected to the gas-solid separation unit, and which transfers the gas reaching the upper portion of the second polymerization unit to the gas-solid separation unit.

Description

[0001] APPARATUS FOR CONTINUOUS GAS PHASE ALPHA OLEFIN POLYMERIZATION [0002]

The present invention relates to an alpha olefin continuous gas phase polymerization apparatus, and more particularly, to an alpha olefin continuous gas phase polymerization apparatus that can be used for producing a polymer.

Various methods such as a continuous stirred tank reactor, a loop reactor, and a gas phase fluidized bed reactor are used for the alpha-olefin polymerization. Among them, the vapor phase fluidized bed reactor is widely used for alpha-olefin polymerization because of its simple structure and easy heat removal. Recently, as the demand for impact-resistant polymers increases, polymerization of a copolymer or a block-copolymer through a gas-phase fluidized bed reactor becomes necessary. In order to polymerize a copolymer or a block copolymer using a conventional fluidized bed reactor, two reactors are required, resulting in an increase in investment cost and a complicated device configuration.

As a method for solving this, International Patent Publication WO 1997-004015 (published on Feb. 20, 1997) 'Gas Phase Polymerization Method and Apparatus for Olefins' is a multi-zone circulating reactor having two or more polymerization zones, Reactor, MZCR) was proposed. The multi-polymerized zone circulation reactor consists of two zones: a riser, which is a gaseous fluidized-bed reactor, and a downcomer, which has a plug flow, and the two polymerization zones are interconnected so that the polymer grows in two zones. WO 1997-004015 restricts the molecular weight distribution by simply balancing the residence time with the riser and the downcomer, and it is difficult to make the gas composition of the riser and downcomer different from each other due to the gas diffusion in the polymerization zone.

In the 'gas phase polymerization method and apparatus', a gas or a liquid monomer is injected into the upper part of the downcomer to prevent the gas mixture of the riser from flowing into the downcomer, ) Is proposed. Barrier Fluid injected as a barrier has an upward flow to prevent the riser gas mixture from entering the downcomer. The liquid barrier fluid descends with the polymer in the downcomer, smoothes the polymer flow in the downcomer, controls the temperature of the downcomer as it is vaporized by the polymerization heat of the polymer, and forms the barrier fluid layer at the top of the downcomer, Thereby preventing the downcomer from being introduced. The vaporized barrier fluid rises above the downcomer and acts as a barrier.

If the flow rate of the liquid barrier fluid exceeds a certain amount, the polymer flow is blocked or flowed in the downcomer, and the off-gas is increased by the excessively injected barrier fluid into the reactor. On the contrary, when the flow rate of the liquid barrier fluid becomes less than a certain amount, the thickness of the barrier decreases, making it difficult to maintain the gas phase composition between the riser and the downcomer differently.

'Process for the gas phase polymerization of olefins' in Barrier Fluid, which prevents the gas mixture of the riser from entering the downcomer without affecting the polymer flow in the downcomer, is disclosed in International Patent Application WO 2009-080660 The amount is specified as the ratio of the flow rate of the polymer circulating between the riser and the downcomer to the flow rate of the liquid barrier fluid.

In order to increase the block copolymer of alpha olefins, the barrier functions and the gas composition and operating conditions of the risers and downcomers must be changed. However, since the gas barrier fl uid vaporized in the downcomer passes through the liquid barrier, the churn flow is formed by the bubbles formed and the barrier performance of the liquid barrier is reduced. Thus, WO 2009-080660 It may be difficult to make a homogeneous block copolymer by preventing the gas monomer mixture of the riser from moving to the downcomer.

An embodiment of the present invention is to provide an alpha-olefin continuous gas phase polymerization apparatus capable of preventing the barrier performance of a liquid barrier from deteriorating.

In addition, one embodiment of the present invention is to provide an alpha olefin continuous gas phase polymerization apparatus capable of reducing the generation of off-gas during a product manufacturing process.

An alpha olefin continuous gas phase polymerization apparatus according to one aspect of the present invention comprises a first polymerization unit in which a polymer is first polymerized, a second polymerization unit in which a polymer is secondary-polymerized in connection with the first polymerization unit, A gas-solid separating portion formed at a boundary between the solid-gas separating portion and the second polymerizing portion and mixed with a gas separated by the gas-solid separating portion to form the polymer, Solid separator to the second polymerizer, and one end is connected to the second polymerizer, and the other end is connected to the second polymerizer, and the other end is connected to the second polymerizer, And a bypass section connected to the gas-solid separation section and transferring the gas reaching the upper part of the second polymerization section to the gas-solid separation section.

The gas-solid separator includes a circulation gas compression unit for compressing the introduced gas, a first gas circulation unit for connecting the gas-solid separation unit and the circulation gas compression unit so that gas can be transferred from the gas- A first heat exchange unit connected to the first gas circulation line and connected to the circulation gas compression unit to cool the compressed gas and transfer the compressed gas to the first polymerization unit, a second heat exchange unit connected to the circulation gas compression unit, Liquid separator for separating the cooled object into a liquid and a gas to generate a liquid barrier, a gas-liquid separator connected to the second heat exchanger for separating the gas-liquid separator and the gas- Liquid separator, and a liquid-barrier injector connected to the gas-liquid separator to supply the liquid-barrier generated by the gas-liquid separator to the gas- Portion and the gas compression cycle by connecting parts of the base body may comprise a second gas circulation line for circulating the gas transferred to the compressed gas separated from the liquid separation.

The barrier unit may include a first partition for supporting the liquid barrier while vertically dividing the gas-solid partition, a second partition formed at the boundary between the second polymer and the gas-solid partition, And the other end is located in the interior of the gas-solid separation unit in the transfer pipe and the transfer pipe through which the polymer introduced into the liquid barrier is transferred, the other end being located inside the second polymerization unit, And a water level control valve for controlling the level of the water level control valve.

Meanwhile, the first partition may have a circular plate shape or a conical shape inclined downward toward the center.

Meanwhile, the bypass portion may be positioned to pass through the first partition and the second partition.

The cap member may be spaced apart from the upper end of the bypass unit.

On the other hand, the bypass section may include a check valve that prevents gas from flowing back from the gas-solid separation section to the second polymerization section.

The bypass unit may be located outside the gas-solid separation unit and the second polymerization unit.

Meanwhile, the bypass unit may be a plurality of bypass units.

An alpha olefin continuous gas phase polymerization apparatus according to an embodiment of the present invention includes a barrier unit and a bypass unit. Therefore, it is possible to prevent the gas from passing through the liquid barrier, and to prevent the deterioration of the blocking performance due to the bubble that may be generated by the gas.

Therefore, even when a smaller amount of liquid barrier is used than conventional alpha olefin continuous gas phase polymerization apparatus, it is possible to maintain a constant gas barrier performance. As a result, a uniform bimodal product can be produced and the amount of off-gas passing through the product can be reduced.

Also, the amount of the liquid flowing into the first gas circulation line is reduced by the liquid barrier injected into the upper portion of the gas-solid separation unit, thereby reducing the number of times of maintenance of the circulation gas compression unit, the first heat exchanging unit and the second heat exchanging unit, The cost can be reduced.

1 is a view showing an alpha olefin continuous gas phase polymerization apparatus according to an embodiment of the present invention.
Fig. 2 is a drawing showing an excerpt of a barrier unit in the alpha olefin continuous gas phase polymerization apparatus of Fig. 1; Fig.
3 is a view showing a modified example of the barrier unit.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, in the various embodiments, elements having the same configuration are denoted by the same reference numerals and only representative embodiments will be described. In other embodiments, only the configurations other than the representative embodiments will be described.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" between other parts. Also, when a part is referred to as "including " an element, it does not exclude other elements unless specifically stated otherwise.

FIG. 1 is a view showing an alpha olefin continuous gas phase polymerization apparatus according to an embodiment of the present invention, and FIG. 2 is a drawing showing an excerpt of a barrier unit in the alpha olefin continuous gas phase polymerization apparatus of FIG.

1 and 2, an alpha olefin continuous gas phase polymerization apparatus 100 according to an embodiment of the present invention includes a first polymerization unit 110, a second polymerization unit 120, a gas-solid separation unit 130 A barrier unit 140, and a bypass unit 150, as shown in FIG.

In the first polymerized portion 110, the polymer is first polymerized. A catalyst injection part F1 into which a catalyst is injected may be formed in a part of the first polymerization part 110.

The second polymerization unit 120 is connected to the first polymerization unit 110. The polymer introduced into the second polymerization section 120 can be polymerized in a second stage while being moved downward by gravity.

The gas-solid separator 130 is formed above the second polymerizer 120 to separate the solid from the gas.

The barrier unit 140 may be formed at a boundary between the gas-solid separator 130 and the second polymerizer 120. The barrier unit 140 includes a liquid barrier 145 that is mixed with the gas separated by the gas-solid separator 130 to move the polymer. The barrier unit 140 transfers the liquid barrier 145 containing the polymer from the gas-solid separation unit 130 to the second polymerization unit 120.

The bypass unit 150 is connected to the second polymerization unit 120 at one end and connected to the gas-solid separation unit 130 at the other end. The bypass unit 150 transfers the gas reaching the upper portion of the second polymerization unit 120 to the gas-solid separation unit 130.

The shape of the bypass unit 150 may be located outside the gas-solid separator 130 and the second polymerization unit 120, for example. At this time, the inlet of the bypass unit 150 may be formed in the second polymerization unit 120, and the outlet may be formed in the upper part of the gas-solid separation unit 130.

The structure of the alpha olefin continuous gas phase polymerization apparatus 100 according to an embodiment of the present invention includes a circulation gas compression unit 160, a first gas circulation line C1, a first heat exchange unit 171, The second heat exchanger 172, the gas-liquid separator 180, the liquid barrier injection unit 190, and the second gas circulation line C2.

The circulation gas compression unit 160 compresses the introduced gas. The circulation gas compression unit 160 may be, for example, a compressor used for compressing gas.

The first gas circulation line C1 connects the gas-solid separator 130 and the circulation gas compression unit 160 so that the gas flows from the gas-solid separation unit 130 to the circulation gas compression unit 160, Lt; / RTI > At least one pressure control valve (V) may be installed in the first gas circulation line (C1). The pressure control valve (V) can regulate the pressure inside the gas-solid separator (130).

The first heat exchanger 171 is connected to the circulation gas compression unit 160. The first heat exchanging part 171 cools the compressed gas and transfers it to the first superposing part 110. The first heat exchanging part 171 and the first superposing part 110 may be connected by a third connection line L3.

A monomer injection part F2 may be formed on the third connection line L3. The monomer used for preparing the polymer can be injected through the monomer injection part F2.

The second heat exchanger 172 is connected to the circulation gas compression unit 160 to cool a part of the compressed gas.

The gas-liquid separator 180 is connected to the second heat exchanger 172 to separate the cooled object into a liquid and a gas to generate a liquid barrier 145.

The liquid-barrier injection unit 190 connects the gas-liquid separation unit 180 and the gas-solid separation unit 130. The liquid barrier injection unit 190 supplies the liquid barrier 145 generated by the gas-liquid separation unit 180 to the gas-solid separation unit 130.

The second gas circulation line (C2) connects the gas-liquid separation unit (180) and the circulation gas compression unit (160). The second gas circulation line (C2) transfers the gas separated from the gas-liquid separation unit (180) to the circulation gas compression unit (160).

The barrier unit 140 may include a first partition 141, a second partition 142, a transfer pipe 143, and a water level control valve 144.

The first partition wall 141 supports the liquid barrier 145 while vertically dividing the gas-solid separator 130.

The second partition wall 142 is formed at the boundary between the second polymerizing unit 120 and the gas-solid separator 130.

One end of the transfer pipe (143) communicates with the first partition wall (141). The other end of the transfer pipe 143 is positioned inside the second polymerization unit 120 and the polymer introduced into the liquid barrier 145 can be transferred.

On the other hand, the liquid barrier 145 and the polymer transferred along the transfer pipe 143 are transferred only to the second polymerization section 120 and are prevented from flowing into the bypass section 150. In the bypass section 150, The portion connected to the portion 120 may be installed at a distance from the transfer pipe 143.

The water level control valve 144 is formed at a portion of the transfer pipe 143 located inside the gas-solid separator 130 to adjust the level of the liquid barrier 145.

The shape of the first barrier ribs 141 may be, for example, a disc shape. Alternatively, the first barrier ribs 141 may have a conical shape inclined downward toward the center.

Since the first partition 141 is formed in a conical shape, the polymer can be more easily transferred to the transfer tube 143 along the conical first partition 141. The inclined angle of the conical first barrier rib 141 is not limited to a specific angle but may be changed according to the design of the manufacturer. However, as the inclination angle of the conical first barrier rib 141 increases, the polymer can be smoothly transported along the first barrier rib 141.

Meanwhile, the bypass unit 150 may include a check valve 151. The check valve 151 prevents gas from flowing back from the gas-solid separator 130 to the second polymerizer 120.

3 is a view showing a modified example of the barrier unit.

Referring to FIG. 3, the bypass unit 250 may be disposed to pass through the first barrier ribs 141 and the second barrier ribs 142 as a modified example. That is, the bypass unit 250 may be located inside the second polymerization unit 120 and the gas-solid separation unit 130.

At this time, the alpha olefin continuous gas phase polymerization apparatus 100 according to an embodiment of the present invention may include a cap member 252.

The cap member 252 may be positioned away from the upper end of the bypass unit 250. That is, a gap may be formed at the upper end of the cap member 252 and the bypass unit 250, and the gas may be discharged through the gap. The cap member 252 can prevent the liquid barrier 145 and the polymer from flowing into the bypass unit 250.

The bypass unit 250 may be a plurality of bypass units. For example, the bypass unit 250 may be positioned at a certain angle around the transfer pipe 143. In the case where there are two bypass portions 250, the bypass portions 250 may be positioned symmetrically with respect to the transfer pipe 143, but the present invention is not limited thereto.

1, the operation of the alpha olefin continuous gas phase polymerization apparatus 100 according to an embodiment of the present invention will be described.

The monomer is injected through the monomer injection part F2. Then, the catalyst is injected through the catalyst injection section F1. In the first polymerizer 110, the polymer undergoes polymerization primarily under fluidization conditions. The polymerized polymer is transferred to the gas-solid separator 130 through the first connection line L1. The polymerized polymer (solid) is transferred to the second polymerization section 120, and the monomer (gas) is transferred to the first gas circulation line C1.

The polymer is slowly lowered in the second polymerization unit 120 and a part of the polymer is discharged through the discharge unit 121 and a part of the polymer is discharged through the second connection line L2 to the first polymerization unit 110, And the polymerization proceeds. The gas separated from the gas-solid separator 130 may recover the lost pressure via the circulation gas compression unit 160, and the polymer polymerization heat may be removed while passing through the second heat exchanger 172.

Thereafter, the polymer is again transported to the first polymerization section 110. Thus, the polymer is circulated through the first polymerization section 110 and the second polymerization section 120, and the gas monomer mixture circulates through the first polymerization section 110, the circulation gas compression section 160, and the first heat exchanger .

In the state where the liquid barrier 145 is continuously injected from the liquid barrier injection unit 190 as described above, the polymer transferred to the gas-solid separation unit 130 is transferred to the lower part of the gas- Lt; / RTI > Thus, the polymer can be mixed into the liquid barrier 145.

The liquid barrier 145 prevents the fine particles contained in the polymer from flowing out to the outside. Therefore, the liquid barrier 145 allows the polymer to be transferred to the second polymerization section 120 while preventing the fine particles from flowing into the circulation gas compression section 160. That is, the polymer is conveyed together with the liquid barrier 145 to the second polymerization section 120 through the level control valve 144 (see FIG. 2).

The level control valve 144 (see FIG. 2) allows the liquid barrier 145 of a constant height to be always filled on the first partition 141 (see FIG. 2). The liquid barrier 145 serves to prevent the gas monomer mixture of the first polymerizer 110 from flowing into the second polymerizer 120.

As described above, the liquid barrier 145 and the polymer are transferred to the second polymerization unit 120 to generate additional polymerization. The liquid barrier 145 is vaporized by the polymerization heat generated at this time, As shown in FIG. The gaseous monomer mixture reaching the upper portion flows into the gas-solid separation unit 130 through the bypass unit 150. At this time, the gas monomer mixture in the gas-solid separation unit 130 can be prevented from flowing back to the second polymerization unit 120 by the check valve 151 provided in the bypass unit 150.

The gas separated from the gas-solid separation unit 130 passes through the pressure control valve V and moves to the circulation gas compression unit 160. The pressure control valve V controls the pressure of the gas-solid separator 130 so that the gas monomer mixture in the second polymerizer 120 can be easily transferred to the gas-solid separator 130 . At this time, one or a plurality of pressure control valves V may be provided, and any one of the pressure control valves V may be opened at all times to prevent the circulation of the monomer from being cut off.

As described above, the alpha olefin continuous gas phase polymerization apparatus 100 according to an embodiment of the present invention includes a barrier unit 140 and a bypass unit 150. Therefore, it is possible to prevent the gas from passing through the liquid barrier 145, and to prevent the deterioration of the blocking performance due to the bubble that may be generated by the gas.

Therefore, even if a smaller amount of the liquid barrier 145 is used than in the conventional alpha olefin continuous gas phase polymerization apparatus, a constant gas barrier performance can be maintained. As a result, a uniform bimodal product can be produced and the amount of off-gas passing through the product can be reduced.

The liquid barrier 145 injected into the upper portion of the gas-solid separator reduces the amount of the particulate that flows into the first gas circulation line C1 and flows through the circulation gas compression unit 160, the first heat exchanging unit 171, By reducing the number of times of maintenance of the two-heat exchanger 172 and the like, the operation cost can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, And are not used to limit the scope of the present invention described in the scope. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: alpha olefin continuous gas phase polymerization apparatus
110: first polymerization section 120: second polymerization section
121: Discharging unit 130: Gas-solid separation unit
140: barrier unit 141: first partition
142: second partition 143: transfer pipe
144: water level control valve 145: liquid barrier
150, 250: Bypass unit 151: Check valve
252: cap member 160: circulation gas compression unit
171: first heat exchanger 172: second heat exchanger
180: gas-liquid separation unit 190: liquid barrier injection unit
C1: first gas circulation line C2: second gas circulation line
L1: first connection line L2: second connection line
L3: Third connection line V: Pressure control valve
F1: catalyst injection part F2: monomer injection part

Claims (9)

A first polymerized portion in which the polymer is first polymerized;
A second polymerization unit connected to the first polymerization unit to polymerize the polymer secondarily;
A gas-solid separator formed above the second polymerizer and separating the solid from the gas;
And a liquid barrier fluid formed at a boundary between the gas-solid separation unit and the second polymerization unit and mixed with a gas separated by the gas-solid separation unit to move the polymer, A barrier unit for transferring the mixed liquid barrier from the gas-solid separation unit to the second polymerization unit; And
A bypass portion connected to the second polymerization portion at one end and connected to the gas-solid separation portion to transfer the gas reaching the upper portion of the second polymerization portion to the gas-solid separation portion;
And an alpha-olefin continuous gas phase polymerization apparatus. The method according to claim 1,
A circulation gas compression unit for compressing the introduced gas;
A first gas circulation line connecting the gas-solid separation unit and the circulation gas compression unit so that gas can be transferred from the gas-solid separation unit to the circulation gas compression unit;
A first heat exchanger connected to the first gas circulation line and connected to the circulation gas compression unit to cool the compressed gas and transfer the compressed gas to the first polymerizer;
A second heat exchanger connected to the circulation gas compressor to cool a portion of the compressed gas;
A gas-liquid separator connected to the second heat exchanger and separating the cooled object into a liquid and a gas to generate a liquid barrier;
A liquid-barrier injection unit connecting the gas-liquid separation unit and the gas-solid separation unit to supply the liquid-barrier generated by the gas-liquid separation unit to the gas-solid separation unit; And
A second gas circulation line connecting the gas-liquid separation unit and the circulation gas compression unit to transfer the gas separated from the gas-liquid separation unit to the circulation gas compression unit;
Wherein the alpha olefin continuous gas phase polymerization apparatus comprises: The method according to claim 1,
The barrier unit includes:
A first partition wall for supporting the liquid barrier while vertically dividing the gas-solid partition;
A second bank formed at a boundary between the second polymerized portion and the gas-solid separation portion;
A transfer pipe through which the polymer introduced into the liquid barrier is conveyed, the one end being communicated with the first partition and the other end being located inside the second polymerization section; And
A liquid level regulating valve formed at a part of the transfer pipe located inside the gas-solid separating part to regulate the level of the liquid barrier;
And an alpha-olefin continuous gas phase polymerization apparatus. The method of claim 3,
Wherein the first partition is formed in a circular plate shape or a conical shape inclined downward toward the center. The method of claim 3,
Wherein the bypass section passes through the first bank and the second bank. 6. The method of claim 5,
And a cap member positioned apart from an upper end of the bypass section. The method according to claim 1,
Wherein the bypass section includes a check valve for preventing gas from flowing back from the gas-solid separation section to the second polymerization section. The method according to claim 1,
Wherein the bypass section is located outside the gas-solid separation section and the second polymerization section. The method according to claim 1,
Wherein the bypass section has a plurality of alpha olefin continuous gas phase polymerization apparatuses.
KR1020150130464A 2015-09-15 2015-09-15 Apparatus for continuous gas phase alpha olefin polymerization KR101613651B1 (en)

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PCT/KR2016/010270 WO2017048019A1 (en) 2015-09-15 2016-09-12 Continuous gas phase polymerization apparatus for alpha olefin

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KR100532831B1 (en) 1998-07-08 2005-12-02 바셀 테크놀로지 캄파니 비이브이 Process and apparatus for the gas-phase polymerisation
KR100999551B1 (en) 2010-06-30 2010-12-08 대림산업 주식회사 Method for gas-phase polymerization of alpha-olefin

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US5292863A (en) * 1992-11-02 1994-03-08 Union Carbide Chemicals Process for removing unpolymerized gaseous monomers from olefin polymers
KR20010010225A (en) * 1999-07-16 2001-02-05 성상경 Sleeve fixture for Pipe laying
US9073027B2 (en) * 2010-09-09 2015-07-07 Basell Poliolefine Italia S.R.L. Process and apparatus for the gas-phase polymerization of olefins

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Publication number Priority date Publication date Assignee Title
KR100532831B1 (en) 1998-07-08 2005-12-02 바셀 테크놀로지 캄파니 비이브이 Process and apparatus for the gas-phase polymerisation
KR100999551B1 (en) 2010-06-30 2010-12-08 대림산업 주식회사 Method for gas-phase polymerization of alpha-olefin

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