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Latex conveying system in production process of special polyvinyl chloride resin and conveying method

A polyvinyl chloride, production process technology, applied in the field of latex delivery system in the production process of special polyvinyl chloride resin, can solve the problems of latex efflux, filter clogging, mechanical seal damage, etc., achieve simple and reliable operation, and prevent local pressure Elevate and improve the effect of sealing performance

Pending Publication Date: 2020-10-13
TANGSHAN SANYOU CHLOR ALKALI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention proposes a latex delivery system and delivery method in the production process of special polyvinyl chloride resin, which can effectively solve the problems of filter blockage, mechanical seal damage, and latex discharge

Method used

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  • Latex conveying system in production process of special polyvinyl chloride resin and conveying method
  • Latex conveying system in production process of special polyvinyl chloride resin and conveying method
  • Latex conveying system in production process of special polyvinyl chloride resin and conveying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Polymerization zone A kettle has discharge conditions, open the plunger valve at the bottom of the kettle, and the product latex after polymerization is discharged under pressure (0.4MPaG) to the discharge filter 1 through the discharge pipeline at the bottom of the kettle, and the discharge time is 27min. The volume is 28.5m 3 , after the current of the discharge pump 2 drops to 16A, open the spray valve at the top of the kettle, the flushing water of the discharge pipeline at the bottom of the kettle, and the flushing water of the discharge filter 1 in turn for 4 minutes, perform flushing after discharging, and pour latex and flushing water into the Store in the discharge tank 3. The measured latex pH value is 5.6, and the solid content is 43.3%. The latex in the discharge tank 3 first passes through the latex filter 4 to further filter finer slag, impurities, etc., and then passes through the second A latex delivery pump 5 is delivered to the liquid vibrating screen ...

Embodiment 2

[0061]Polymerization B zone C kettle has discharge conditions, open the plunger valve at the bottom of the kettle, and the product latex after polymerization is discharged under pressure (0.45MPaG) through the discharge pipeline at the bottom of the kettle to the discharge filter 1, the discharge time is 25min, and the material is discharged. The volume is 28.7m 3 , after the current of the discharge pump 2 drops to 16A, turn on the spray valve at the top of the kettle, rinse the discharge line at the bottom of the kettle for 3 minutes each, and rinse the water in the discharge filter 1 for 4 minutes, and pour both the latex and the rinse water into the discharge tank. 3, the latex pH value is 5.4, and the solid content is 43.7%. The latex in the discharge tank 3 is first filtered by the latex filter 4 to further filter finer slag, impurities, etc., and then the first latex delivery pump. 5. It is transported to the liquid vibrating screen 6 to filter out the particles in the ...

Embodiment 3

[0063] Polymerization C zone D kettle has discharge conditions, open the plunger valve at the bottom of the kettle, and the product latex after polymerization is discharged under pressure (0.50MPaG) through the discharge pipeline at the bottom of the kettle to the discharge filter 1, the discharge time is 23min, and the material is discharged. The volume is 28.7m 3 , after the current of the discharge pump 2 drops to 16A, turn on the spray valve at the top of the kettle, the flushing water of the discharge line at the bottom of the kettle, and the flushing water of the discharge filter 1 for 3 minutes each. After discharging, flushing is performed, and both the latex and the flushing water are injected into the It is stored in the feeding tank 3. The pH value of the latex is measured to be 5.8, and the solid content is 45.6%. A latex delivery pump 5 is transported to the liquid vibrating screen 6 to filter out the particles in the solution, and flows through the latex storage ...

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Abstract

The invention discloses a latex conveying system in the production process of special polyvinyl chloride resin. The system comprises a discharging filter, a discharging pump, a discharging tank, a latex filter, a first latex conveying pump, a latex storage tank, a second latex conveying pump, a drying filter, an atomizer and a drying tower which are sequentially connected through a pipeline, wherein the latex filter comprises a first cylinder, a first filter cylinder is arranged in the first cylinder, the bottom end of the first filter cylinder makes sealing contact with the bottom surface ofthe first cylinder through a bidirectional sealing rubber ring, and the top end of the first filter cylinder makes sealing contact with the top surface of the first cylinder through the cooperation ofthe bidirectional sealing rubber ring and a polytetrafluoroethylene gasket; the discharging pump is a double-end-face under-pressure centrifugal pump; and the first latex conveying pump and the second latex conveying pump are variable-frequency screw pumps. The invention further discloses a conveying method of the latex conveying system in the production process of the special polyvinyl chlorideresin. According to the latex conveying system and the conveying method thereof provided by the invention, the problems of filter blockage, mechanical seal damage and latex discharge can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to a latex conveying system and a conveying method in the production process of special polyvinyl chloride resin. Background technique [0002] Polyvinyl chloride is a widely used thermoplastic, which is used in medical materials, toys, cables, packaging materials, decoration materials, construction materials and automobile parts, etc. The latex, the polymerized product in the production process of special PVC resin, needs to be transported through the conveying system, and then dried in a dryer to obtain a PVC resin product. At present, the latex transportation mode in the production process of the existing special resin for polyvinyl chloride: the special resin for polyvinyl chloride is in the 48m 3 The polymerization reaction is carried out in the polymerization tank, and then the polymerized product—latex is transported to the discharge tank through the discharge pip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D36/02B67D7/58B67D7/06
CPCB01D36/02B67D7/58B67D7/06
Inventor 董博刘岩李建奎张超刘志勇董学立刘成森张胜男杨爱娜刘大瑞王新志李德兴李贺帅徐宏章郭建华王俊华李志刚于鹏王倩姚连仓刘立国王朝祥孙守凯张成伟张志家丰钢孟维庆
Owner TANGSHAN SANYOU CHLOR ALKALI
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