Multistage gas-liquid parallel flow devolatilization technology as well as devolatilization device

A technology of devolatilization device and liquid seal device, which is applied in liquid degassing, organic chemistry, steam distillation, etc., can solve the problems of high manufacturing and operating costs, small gas-liquid flux, and high manufacturing costs, and achieve manufacturing and operating costs Low pressure, large gas-liquid passing capacity, and wide application range
CN104028008AInactive Publication Date: 2014-09-10TIANJIN YOUHUA SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN YOUHUA SCI & TECH
Publication Date
2014-09-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a multistage gas-liquid parallel flow devolatilization technology. The multistage gas-liquid parallel flow devolatilization technology is characterized in that a devolatilization tower mainly structurally comprises a tower body, a group or multiple groups of padding sections, a baffle, liquid seal devices, and a liquid distributor; materials enter the tower via the liquid distributor from the top of the tower; stripping stream is introduced or not from the bottom of the tower as required; in the padding sections, a gas and a liquid flow in parallel, and flow through a sieve tray to form a devolatilization interface so as to perform gas-liquid mass transfer. The multistage gas-liquid parallel flow devolatilization technology has the advantages of full gas-liquid contact, high gas-liquid passing capacity, no flooding restriction on two-phase load, small resistance and the like, has extremely high gas-liquid mass transfer efficiency, can be used for removing soluble gases in waste water and volatile substances in a polymer solution, and has extremely high popularization value.
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Description

technical field

[0001] The invention relates to a multistage gas-liquid co-current devolatilization process and a devolatilization device, in particular to a devolatilization method and a device for efficiently removing volatile substances from a polymer solution. Background technique

[0002] The devolatilization process is an important link in polymer production, and its main function is to separate low molecular weight volatile components from the liquid phase to obtain qualified liquid phase products.

[0003] Generally, measures to strengthen the devolatilization process mainly include 1. Strengthening operating conditions, such as increasing the temperature of the devolatilization system, etc.; 2. Adding low-boiling point devolatilization aids to reduce the partial pressure of volatile components in the gas phase; 3. Multi-stage devolatilization ; 4. Increase the gas-liquid two-phase interface and strengthen surface renewal.

[0004] There are many forms of devolatili...

Claims

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