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Post-treatment system and method for de-monolysis and deodorization in polymer polyol production

A polyol and polymer technology, applied in the field of polymer polyol production, can solve the problems of low removal efficiency and long time consumption

Active Publication Date: 2018-08-31
CHINA PETROCHEMICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a post-treatment system and method for improving the efficiency of single removal and deodorization in the production process of polymer polyols, which not only solves the problems of long time-consuming and low removal efficiency of traditional single removal and deodorization methods , which improves the production capacity of the device and reduces the production cost

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  • Post-treatment system and method for de-monolysis and deodorization in polymer polyol production
  • Post-treatment system and method for de-monolysis and deodorization in polymer polyol production
  • Post-treatment system and method for de-monolysis and deodorization in polymer polyol production

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Embodiment Construction

[0023] figure 1 One of the best embodiments of the post-treatment system of the present invention for singulation and deodorization in the production of polymer polyols is shown. Such as figure 1 As shown, the post-treatment system includes a heat exchanger 1, a post-treatment tank 2, a jet pump group 3, a storage tank 4 and a vacuum pump (not shown). All these devices are hermetically connected by pipes to form a connected space.

[0024] The polymer polyol material R from the reactor (not shown) first passes through the heat exchanger 1, in which the temperature of the material R is increased from 80-120°C to 120-180°C, because it is easy to remove the polyol in the material R at high temperature Residual monomers such as styrene and acrylonitrile etc. The heating medium used by the heat exchanger 1 may be steam or the like.

[0025] The heated polymer polyol material R enters the post-treatment tank 2, where at least most of the residual monomers are removed. The polym...

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Abstract

The invention discloses a post-treatment system and a post-treatment method for monomer removing and deodorization in production of a polymer polyol. The post-treatment system for monomer removing and deodorization in production of a polymer polyol includes: a post-treatment kettle which is suitable for receiving a crude polymer polyol material from a polyer polyol reactor; a vacuum pump which is used for generating vacuum in the post-treatment kettle; and a storage tank which is used for storing the polyer polyol from the post-treatment kettle. A bubbling pipe is arranged in the post-treatment kettle and is used for introducing a bubbling agent to the post-treatment kettle. Correspondingly, a post-treatment method for monomer removing and deodorization in production of polymer polyol is disclosed.

Description

technical field [0001] The present invention generally relates to the production of polymer polyols, and more particularly to a post-treatment system and method for singulation and deodorization in the production of polymer polyols, so as to improve the efficiency of singulation and deodorization. Background technique [0002] Polymer polyol is based on general-purpose polyether polyol, adding acrylonitrile, styrene and initiator azobisisobutyronitrile, and performing free radical graft polymerization. [0003] The vinyl monomers used in the preparation of polymer polyols cannot be completely reacted in the reaction stage, and the small molecule monomers remaining in the polymer polyols not only increase the odor of the polymer polyol products, but also bring harm to the human body and the environment. to adverse effects. Therefore, it is very important to fully remove the volatile components. The simple method currently used is to use a vacuum system to reduce the overall ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F6/00
Inventor 潘建华朱建海金惠忠杨正勇杨捷
Owner CHINA PETROCHEMICAL CORP