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Series reactor process used for olefin polymerization

An olefin polymerization and reactor technology, which is applied in the field of series reactor technology for olefin polymerization, can solve problems such as blockage of conveying pipelines, inter-stringing of reaction materials, etc.

Active Publication Date: 2010-07-28
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] As a result of diligent research by the present inventors, it has been found that by introducing a separation vessel between the two reactors in which the hydrogen in the effluent of the first reactor is stripped by vaporization of the liquid, the solid material and the Gas materials, and the use of liquid medium to transport the polymer produced in the first reactor to the second reactor, solve the problems of the reaction materials interlinking and the blockage of the delivery pipeline after two or more reactors are connected in series, thus completing this project invention

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  • Series reactor process used for olefin polymerization
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Embodiment Construction

[0029] The term "polymerization" used in the present invention includes homopolymerization and copolymerization. The term "polymer" used in the present invention includes homopolymers and copolymers.

[0030] In a first aspect, the present invention provides a process for the polymerization of olefins using two or more reactors connected in series, the process comprising:

[0031] i) polymerizing olefins in a first reactor (R1) in the presence of a catalyst and a first concentration of hydrogen to produce a first reactor effluent;

[0032] ii) introducing said first reactor effluent via process line (L1) into a separation vessel (C8), where said first reactor effluent is contacted with a first liquid and the vaporization vapor of said first liquid is used to stripping hydrogen from said first reactor effluent, vaporized first liquid and stripped gases including hydrogen are removed from the separation vessel (C8) headspace and returned to the first reactor (R1), A first mixt...

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Abstract

The invention discloses a series reactor process used for olefin polymerization, wherein a separator is led between two reactors. In the separator, hydrogen is stripped from the effluent of a first reactor by adopting the vaporization of liquid, solid material is separated from gas material by a liquid medium, and polymer in the effluent of the first reactor is transmitted to a second reactor by the liquid medium.

Description

technical field [0001] The present invention relates to a series reactor process for the polymerization of olefins, more particularly, to a series double reactor process for the polymerization of olefins, wherein a separation vessel is introduced between the two reactors, in which liquid The vaporization strips the hydrogen in the first reactor effluent, utilizes the liquid medium to separate the solid material from the gaseous material, and utilizes the liquid medium to transport the polymer in the first reactor effluent to the second reactor. Background technique [0002] It is well known that advanced ethylene polymerization processes and advanced catalysts can produce polymers with low cost and high performance. At present, there are many advanced ethylene polymerization processes that use double or multiple reactors in series to produce polyethylene resins with bimodal or broad molecular weight distribution under different reaction conditions or gas compositions to impr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F110/02C08F2/01
Inventor 吴文清阳永荣王靖岱骆广海王树芳蒋斌波韩国栋王屹张显峰
Owner CHINA PETROLEUM & CHEM CORP