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Method for agglomeration of butadiene rubber solution

The technology of a rubber solution and a coagulation method is applied in the coagulation field of butadiene rubber solution to achieve the effects of reducing environmental protection requirements, reducing the discharge of sewage and ensuring the coagulation effect.

Active Publication Date: 2020-12-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional process design, the heat supply method of this process is the direct heating of water vapor. This route has a simple process and high heat utilization efficiency. The same amount of oily sewage must be discharged from the system. In today's increasingly stringent pollution discharge quantity and standards for chemical production equipment, the limitations of this process are increasingly reflected.

Method used

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  • Method for agglomeration of butadiene rubber solution
  • Method for agglomeration of butadiene rubber solution
  • Method for agglomeration of butadiene rubber solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The coagulation process of this embodiment adopts the equal pressure temperature difference type, and its process flow chart is as follows figure 1 As shown, the butadiene rubber solution PS (butadiene rubber solution, the solvent is cyclohexane, hereinafter referred to as the glue) is sent into the glue heater E-2 and after the second heat exchange with the first steam condensed water , sent to the water-gel mixer X-3 and mixed with the post-treatment circulating hot water A sent in to obtain a heterogeneous mixture, and the obtained heterogeneous mixture was sent to the first coagulation tank R-1, the tank The top gas phase WS passes through the stripping gas filter X-1 of the first condensation tank and the condensation cooler and then enters the oil-water stratification tank for stratification; in addition, the post-treatment circulating hot water B is sent to the circulating hot water heater E-1 Perform the first heat exchange with the part of the steam LS sent in ...

Embodiment 2

[0061] The post-treatment circulating hot water B / A is 0.15, and other process conditions are the same as in Example 1. The experimental results are shown in Table 1.

Embodiment 3

[0063] The post-treatment circulating hot water B / A is 0.3, and other process conditions are the same as in Example 1. The experimental results are shown in Table 1.

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Abstract

The invention relates to the field of preparation of rubber products, and discloses a method for agglomeration of a butadiene rubber solution, which comprises the following steps: sequentially sendinga heterogeneous mixture into a first agglomeration kettle and a second agglomeration kettle to remove a solvent, wherein post-treatment circulating hot water B and steam are subjected to first heat exchange to obtain superheated water and first steam condensate water, the superheated water is fed into the first agglomeration kettle from the bottom of the first agglomeration kettle, and the heterogeneous mixture is obtained by mixing post-treatment circulating hot water A and a butadiene rubber solution. By means of the method, the amount of discharged sewage can be reduced, and the steam condensation water with high enthalpy is fully utilized.

Description

technical field [0001] The invention relates to the field of rubber product preparation, in particular to a coagulation method for butadiene rubber solution. Background technique [0002] The solvent removal process of the solution polymerization synthesis device adopts the condensation process of double-tank series water analysis method based on the principle of steam distillation and wet degassing. In the traditional process design, the heat supply method of this process is the direct heat supply of water vapor. This route has a simple process and high heat utilization efficiency. The same amount of oily sewage must be discharged from the system. The limitations of this process are increasingly reflected in today's increasingly stringent pollution discharge quantities and standards for chemical production equipment. Contents of the invention [0003] The purpose of the present invention is to improve the sewage discharge of the device. Under the premise of not changing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C2/06
CPCC08C2/06
Inventor 徐林邰峰李巍张国娟
Owner CHINA PETROLEUM & CHEM CORP