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An integrated production platform for chlorinated polymers

A technology of chlorinated polymer and production platform, applied in chemical/physical/physical-chemical stationary reactors, chemical/physical processes, methods of chemically changing substances by atmospheric pressure, etc., to reduce production costs and improve Product adjustment ability and market adaptability, the effect of improving production efficiency and utilization rate

Active Publication Date: 2021-10-22
上海崟澈技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no integrated platform capable of producing multiple chlorinated polymers

Method used

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  • An integrated production platform for chlorinated polymers
  • An integrated production platform for chlorinated polymers
  • An integrated production platform for chlorinated polymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Design of chlorination reaction kettle: the selected chlorination reaction kettle is 25m 3 A glass-lined kettle, the top of the chlorination reaction kettle is provided with a liquid chlorine feed port 1, the blade of the agitator 4 provided in the reaction kettle is a three-blade back-sweeping type, three stirring layers, and the top stirring layer The distance h from the middle stirring layer 3 850mm; the distance h between the middle stirring layer and the bottom stirring layer 2 850mm; the distance between the bottom stirring layer and the bottom of the tank h 1 is 250mm; the ratio d / D of the diameter d of the stirred layer to the internal diameter D of the reactor is 0.6, and the height-to-diameter ratio (H / D) of the chlorination kettle is 1.87;

[0042] The bottom of the chlorination reactor is provided with a gas chlorine feed port 2 and a discharge port 3 . The gas chlorine feed port 2 is an eccentric design, and its eccentricity r=d / 3.

[0043] 2. Chlori...

Embodiment 2

[0054] 1, chlorination reactor design: the chlorination reactor selected is the same as embodiment 1.

[0055] 2. Chlorination process: The raw material PP resin enters the chlorination reaction kettle for chlorination reaction. The initial temperature of the chlorination reaction is 50°C and normal pressure. When the chlorination reaction ends, the temperature is 110°C and the pressure is 0.35MPa. ; After the chlorination reaction is completed, the material enters the multifunctional quick separation device after coming out of the discharge port 3;

[0056] 3. Separation process:

[0057] (A) the CPP material to be separated enters the deconcentrated acid zone to remove hydrogen ions, and the feed rate of the CPP material is controlled by the separated concentrated hydrochloric acid flow ratio; the volume flow rate of the concentrated hydrochloric acid / material feed volume flow ratio is 0.7, The vacuum degree of the acid deconcentration zone is 0.005-0.01MPa (absolute pressu...

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Abstract

The invention belongs to the technical field of preparation of chlorinated polymers, in particular to an integrated production platform of chlorinated polymers. The platform includes a chlorination reactor, a multi-functional rapid separation device and a drying device in turn. The stirrer provided in the reaction kettle is a three-layer stirring layer, and the distance between the top stirring layer and the middle stirring layer is h 3 650-1050mm; the distance h between the middle stirring layer and the bottom stirring layer 2 650‑1050mm; the distance h between the bottom stirring layer and the bottom of the kettle 1 is 200-300mm; the ratio d / D of the diameter d of the stirring layer and the inner diameter D of the reactor is 0.6 ± 0.05; the integrated production platform provided by the present invention can realize various high chlorination processes such as CPE, CPVC, and CPP on the same platform. The production of polymer products can improve the production efficiency and utilization rate of a single (set) equipment, improve the product adjustment ability and market response ability, and greatly reduce the production cost.

Description

technical field [0001] The invention belongs to the technical field of preparation of chlorinated polymers, in particular to an integrated production platform of chlorinated polymers. Background technique [0002] At present, the main method of producing chlorinated polymers at home and abroad is the suspension method, and the chlorinated polymers involved mainly refer to chlorinated polyethylene (CPE), chlorinated polyvinyl chloride (CPVC) and chlorinated polypropylene (CPP) Wait. Because of the different raw materials used, the production process and equipment are different. [0003] In the production of CPVC, the mass ratio of chlorine element (chlorination degree) is only increased by about 10%, while in the production of CPE and CPP, because the raw material PE or PP does not contain chlorine, the chlorination degree of the product is 30%. The above, or even higher, can be subdivided into low chlorination and high chlorination according to the mass ratio (chlorination...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/18C08F8/22C08F14/06C08F10/06B01J3/00
CPCB01J3/006B01J19/18C08F8/22C08F14/06C08F10/06
Inventor 张钧钧
Owner 上海崟澈技术工程有限公司