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Agitator of polymerizer for producing PVC resin paste by emulsion polymerization

The technology of polyvinyl chloride paste and agitator is applied in the field of agitators for the production of polyvinyl chloride paste resin polymerization kettles by emulsion polymerization, which can solve the problems of low production capacity of the polymerization kettle and uneven temperature at the upper and lower sides, and achieves high heat transfer effect, Improve mixing, heat transfer, and productivity

Inactive Publication Date: 2007-06-13
AVIC LIMING JINXI CHEM MASCH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now the demand for polyvinyl chloride paste resin is increasing, and the upper and lower temperatures are not uniform, resulting in lower production capacity of the polymerization kettle

Method used

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  • Agitator of polymerizer for producing PVC resin paste by emulsion polymerization
  • Agitator of polymerizer for producing PVC resin paste by emulsion polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The agitator used for emulsion method polymerization to produce polyvinyl chloride paste resin polymerization kettle, agitator 15 includes agitator shaft 18, annular pipe type agitator paddle 17, agitator 15 is installed in polymerization kettle 1, agitator shaft 18 is hollow type, A ring-type stirring paddle 17 is installed on the stirring shaft 18. The inside of the stirrer 15 is fed with circulating cooling water. The stirrer 15 is provided with a cooling water inlet 12 and a cooling water outlet 11. Fluorine packing seal 10; the ring tube type stirring paddle 17 diameter of the agitator 15 is 0.48: 1 to the kettle body 2 diameter ratio, and the clamp between the ring tube centerline of the ring tube type stirring paddle 17 of the agitator 15 and the stirring shaft 18 The angle is 3°; the ring-type stirring paddle 17 and the stirring shaft 18 are connected by detachable countersunk screws 22; the lower part of the stirring shaft 18 and the ring-type stirring paddle 17...

Embodiment 2

[0021] Embodiment two is basically the same as embodiment one, and the difference is that the diameter of the ring-type stirring paddle 17 of the agitator 15 is 0.45:1 to the diameter of the kettle body 2, and the center of the ring pipe of the ring-type stirring paddle 17 of the stirrer 15 is 0.45:1. The angle between the line and the central line of the stirring shaft 18 is 4°;

[0022] The kettle body 2 has a volume of 130 cubic meters, an aspect ratio of 2.6, a height of 30 meters, and a nominal diameter of 4.0 meters.

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Abstract

This invention relates to a reactor agitator use for the production of PVC paste resin polymerization in Emulsion polymerization method. It includes polymerizer and blender. In polymerizer with the installation of blenders, and the blender includes mixing axis, ring canal type stirring paddle. The mixing axis is hollow shaft type, and with installation of ring canal type stirring paddle. Blender equipped with cooling water import and export of cooling water. Cooling water import and export of cooling water used PTFE packing seal; The diameter ratio of ring canal type stirring paddle and kettle is 0 .45-0.50:1. The angle between ring canal centerline of ring canal type stirring paddle and mixing axis is 3 -5 degree. The ring canal type stirring paddle and mixing axis connect through removable heavy head screw, and the lower part of the connection has a cooling water circulation mouth.

Description

technical field [0001] The invention relates to a stirrer for a polymerization tank, in particular to a stirrer for a polymerization tank for producing polyvinyl chloride paste resin by emulsion polymerization. Background technique [0002] The agitator is the most critical part of the polymerization kettle, which directly affects the reaction speed, heat transfer rate and product quality of chemical materials in the kettle. [0003] The production of polyvinyl chloride paste resin in my country began in the late 1980s, using the emulsion polymerization production process of Japan Zhongyuan Company. So far, there are few paste resin production enterprises with small scale and outdated production technology. Now the demand for polyvinyl chloride paste resin continues to increase, and the upper and lower temperatures are uneven, resulting in low production capacity of the polymerization kettle. Shenyang Chemical Industry Co., Ltd. urgently needs to carry out technical transf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/01C08F114/06C08F2/22
Inventor 郝文生史文藻罗忠新张学刚宋巧梅刘生宽王忠宏杨连鸿郭志英郭灵李岩
Owner AVIC LIMING JINXI CHEM MASCH GRP CO LTD
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