Styrene-butadiene latex degassing device and degassing method

A technology of styrene-butadiene latex and degassing device, which is applied in separation methods, liquid degassing, chemical instruments and methods, etc., can solve the problems of large fluctuation of product quality, difficult process control, long degassing time, etc. Volume and processing speed, control of liquid level, and the effect of increasing yield
CN112957773AActive Publication Date: 2021-06-15JINING MING SHENG NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JINING MING SHENG NEW MATERIALS CO LTD
Publication Date
2021-06-15

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Abstract

The invention discloses a styrene-butadiene latex degassing device which comprises a degassing tower, a tower top vacuum system and a tower kettle vacuum system, the tower top vacuum system comprises a condenser gas phase inlet, a tower top condenser and a liquid receiving tank which sequentially communicate through a pipeline, the condenser gas phase inlet communicates with a tower top gas phase outlet, and the tower top condenser is connected with a tower top vacuum pump; and the tower kettle vacuum system comprises a liquid seal tank and a tower bottom vacuum pump communicating with a gas phase outlet of the liquid seal tank. The VOC removal efficiency and the latex yield are increased by controlling the pressure difference between the tower top vacuum pump and the tower bottom vacuum pump and maintaining the pressure in the degassing tower, and the situation that the temperature of steam at the bottom of the tower is increased and latex crusting is avoided due to the fact that the system resistance is too large can be effectively prevented.
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Description

technical field

[0001] The invention relates to the technical field of styrene-butadiene latex production, in particular to a styrene-butadiene latex degassing device and a degassing method. Background technique

[0002] SBR latex is generally used in papermaking, coating and other processes. It is produced by copolymerization of butadiene and styrene to form carboxylated styrene-butadiene latex through subsequent processing. A small amount of butadiene and styrene raw materials are usually dissolved in the prepared styrene-butadiene latex after the reaction, and the residual monomers need to be removed through a degassing process. The degassing tower removes the residual monomers in the styrene-butadiene latex generally by feeding saturated steam, and then adsorbing and removing styrene and butadiene during the steam volatilization process, so as to separate and remove the residual monomers from the styrene-butadiene latex.

[0003] CN211536643U discloses a kind of degassi...

Claims

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