Continuous Coagulation Method of Fluoropolymer Emulsion and Pipeline Emulsifier

A technology of polymer emulsion and coagulation method, which is applied in the field of continuous coagulation method of fluorine-containing polymer emulsion and pipeline emulsifier, which can solve the problems of poor demulsification effect and increased steam consumption, so as to increase additional cost and improve utilization rate , the effect of reducing the impact

Active Publication Date: 2021-06-29
SHANDONG HUAXIA SHENZHOU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a continuous coagulation method for fluorine-containing polymer emulsions, which solves the shortcomings of the existing coagulation methods that need to introduce auxiliary agents, increase steam consumption and poor demulsification effect, and improve the emulsion The efficiency of demulsification can reduce the solid content of waste water after demulsification, reduce the cost of products, and reduce the impact of waste water on the environment; the invention also provides a pipeline emulsifier for continuous coagulation of emulsion

Method used

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  • Continuous Coagulation Method of Fluoropolymer Emulsion and Pipeline Emulsifier
  • Continuous Coagulation Method of Fluoropolymer Emulsion and Pipeline Emulsifier
  • Continuous Coagulation Method of Fluoropolymer Emulsion and Pipeline Emulsifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A pipeline type emulsifier with a three-layer stator-rotor structure is selected, including an outer layer stator-rotor and two inner-layer stator-rotors. The radial gap between the stator and the rotor of the inner stator and rotor is 0.4mm. There are 3 diversion grooves 4 on the stator and rotor of the inner layer, and 4 diversion grooves 4 on the stator and rotor of the inner layer. The number of tooth structures 3 in the groove 4 is 20, and the tangent angle between the flow channel 2 and the guide groove 4 at the flow channel opening 5 is 60°, and the experiment is carried out.

[0042] Put 1000L polyperfluorinated ethylene propylene emulsion, the emulsion particle size is 0.168μm, put it into the intermediate storage tank from the polymerization kettle, add water into the intermediate tank, the ratio of emulsion to water is 1:2, and transport it into the intermediate tank through the pipeline Pipeline emulsifier, after increasing the rotational speed of the stator...

Embodiment 2

[0044] The pipeline type emulsifier with two-layer stator and rotor structure is adopted, including an outer layer of stator and rotor and an inner layer of stator and rotor. The radial gap between the stator and the rotor of the inner stator and rotor is 0.4 mm, and there are 3 diversion grooves 4 on the stator and rotor of the inner layer, and the number of tooth structures 3 in each diversion groove 4 is 30. The tangent angle between the diversion groove 4 and the runner mouth 5 is 30°, and the experiment is carried out.

[0045] Put 1000L polytetrafluoroethylene emulsion, the emulsion particle size is 0.165μm, put it into the intermediate storage tank from the polymerization kettle, add water into the intermediate tank, the ratio of emulsion to water is 1:2, and transport it into the pipeline through the pipeline Type emulsifier, increase the rotational speed of the stator and rotor of the pipeline emulsifier to 10,000 rpm, open the outlet, and transport the demulsified po...

Embodiment 3

[0047] A pipeline type emulsifier with a four-layer stator-rotor structure is selected, including an outer layer of stator-rotor and three inner-layer stator-rotors. There are 3 diversion grooves 4, and there are 4 diversion grooves 4 on the second stator and rotor of the inner layer, and 5 diversion grooves 4 on the stator and rotor of the inner third layer, and the number of tooth structures 3 of each diversion groove 4 is 20, the tangent angle between the runner 2 and the guide groove 4 at the runner mouth 5 is 90°, and the experiment is carried out.

[0048] Put 1000L polyvinylidene fluoride emulsion, the emulsion particle size is 0.166μm, put it into the intermediate storage tank from the polymerization kettle, add water into the intermediate tank, the ratio of emulsion to water is 1:2, and transport it into the pipeline through the pipeline Type emulsifier, increase the rotational speed of the stator and rotor of the pipeline emulsifier to 10,000 rpm, open the outlet, an...

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Abstract

The invention relates to the technical field of polymer emulsion coagulation, in particular to a continuous coagulation method of fluorine-containing polymer emulsion and a pipeline emulsifier. The continuous coagulation method is that the mixture of fluorine-containing polymer emulsion and water is continuously input into a pipeline type emulsifier for continuous demulsification to obtain a fluorine-containing polymer solid; the mixing mass ratio of the fluorine-containing polymer emulsion and water is It is 1:1‑3; the pipeline emulsifier is provided with 3‑5 layers of stator and rotor. The continuous coagulation method of the present invention solves the shortcomings of the existing coagulation method that need to introduce auxiliary agents, increase steam consumption and poor demulsification effect, improve the emulsion demulsification efficiency, reduce the solid content of waste water after demulsification, and reduce the cost of the product. Reduce the impact of waste water on the environment; the invention also provides a pipeline emulsifier used for the continuous coagulation of the emulsion.

Description

technical field [0001] The invention relates to the technical field of polymer emulsion coagulation, in particular to a continuous coagulation method of fluorine-containing polymer emulsion and a pipeline emulsifier. Background technique [0002] Fluoropolymer resin has excellent electrical insulation, high temperature resistance, chemical medium resistance, low friction coefficient, excellent dielectric properties, and can be used in many fields such as cables, pipes, membranes, and pump valve linings. [0003] The production process of fluoropolymer resin mainly includes polymerization, coagulation, washing, drying and granulation. Coagulation is the process of separating the fluorine-containing polymer resin emulsion from a single liquid phase of the emulsion into two phases of a solid phase and an aqueous phase. Traditional coagulation demulsification methods include mechanical demulsification, low temperature demulsification, ultrasonic demulsification, etc., and mecha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F6/22B01F3/08
Inventor 王军徐清钢侯兴志韩久华张君宇王汉利
Owner SHANDONG HUAXIA SHENZHOU NEW MATERIAL
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