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Process for synthesizing vinyl chloride by using mercury-free catalyst

A mercury catalyst, vinyl chloride technology, applied in the direction of mercury halide, separation method, physical/chemical process catalyst, etc., can solve the problems of poor environmental protection of waste gas and waste liquid, poor adaptability of raw materials, high energy consumption, etc., to achieve economical The benefits are feasible, strong adaptability, and the effect of strong adaptability

Pending Publication Date: 2022-06-28
NEI MONGOL SHENGLONG DADI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The processing technology of the existing vinyl chloride process has poor adaptability to raw materials, the production is not flexible, the waste gas and waste liquid generated in the production process are not environmentally friendly, and the production process consumes a lot of energy and has low economic benefits. , so we propose a process for the synthesis of vinyl chloride using a mercury-free catalyst to solve the above-mentioned problems

Method used

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  • Process for synthesizing vinyl chloride by using mercury-free catalyst
  • Process for synthesizing vinyl chloride by using mercury-free catalyst
  • Process for synthesizing vinyl chloride by using mercury-free catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0034] see Figure 1-3 , a process for synthesizing vinyl chloride using a mercury-free catalyst, including raw material soaking, separation, pickling, water washing, drying, waste catalyst recovery and waste gas and waste liquid treatment;

[0035] Soak the raw materials, add mercuric chloride according to the required amount into the dissolving tank heated by steam, add a certain amount of industrial hydrochloric acid and a certain amount of clean water or circulating water in the industrial pool, turn on the agitator and pass steam to heat to 80 °C , at a constant temperature for 20 minutes, to dissolve the mercuric chloride into a transparent solution for later use; at this time, put the activated carbon into the soaking tank, and after repeated pickling and water washing processes, the activated carbon is ready for use, and then open the valve of the dissolving tank to dissolve it. The purified mercuric chloride solution enters the sealed soaking tank, so that the activat...

Embodiment 2

[0050] see Figure 1-3 , a process for synthesizing vinyl chloride using a mercury-free catalyst, including raw material soaking, separation, pickling, water washing, drying, waste catalyst recovery and waste gas and waste liquid treatment;

[0051] Soak the raw materials, add mercuric chloride according to the required amount into the dissolving tank heated by steam, add a certain amount of industrial hydrochloric acid and a certain amount of clean water or circulating water in the industrial pool, turn on the agitator and pass steam to heat to 80 °C , at a constant temperature for 20 minutes, to dissolve the mercuric chloride into a transparent solution for later use; at this time, put the activated carbon into the soaking tank, and after repeated pickling and water washing processes, the activated carbon is ready for use, and then open the valve of the dissolving tank to dissolve it. The purified mercuric chloride solution enters the sealed soaking tank, so that the activat...

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PUM

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Abstract

The invention discloses a process for synthesizing vinyl chloride by using a mercury-free catalyst, which belongs to the technical field of chemical synthesis and comprises the steps of raw material soaking, separation, acid pickling, water washing, drying, waste catalyst recovery and waste gas and waste liquid treatment. According to the step of raw material soaking, mercuric chloride is added into a mechanically-stirred dissolving tank heated by steam according to the required amount, then a certain amount of industrial hydrochloric acid and a certain amount of clear water or circulating water in an industrial pool are added, a stirrer is started, steam is introduced for heating to 80 DEG C, the temperature is kept constant for 20 minutes, and mercuric chloride is dissolved into a transparent solution for standby application. The smelting process flow has strong adaptability to the raw materials, so that the production is flexible, environment-friendly and less in smoke leakage, the raw materials are stored in a warehouse, open-air stacking and pollution caused by natural water loss are avoided, the process is mature, reliable, efficient and energy-saving, and the economic benefit is feasible.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis, in particular to a process for synthesizing vinyl chloride using a mercury-free catalyst. Background technique [0002] Vinyl chloride, also known as vinyl chloride, with the chemical formula C2H3Cl, is an organic compound and an important monomer in polymer chemical industry. It can be obtained from ethylene or acetylene. Vinyl chloride is a toxic substance, and long-term inhalation and exposure to vinyl chloride may cause liver cancer. It forms an explosive mixture with air, the explosion limit is 3.6% to 33% (volume), and it is more likely to explode under pressure. During storage and transportation, attention must be paid to the sealing and nitrogen sealing of the container, and a small amount of polymerization inhibitor should be added. [0003] The processing technology of the existing vinyl chloride process has poor adaptability to raw materials, and has no flexibility in produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J27/138B01J37/00B01J37/02B01J37/08C01G13/04B01D53/14
CPCB01J21/18B01J27/138B01J37/0201B01J37/08B01J37/009C01G13/04B01D53/1406B01D2257/204B01D2257/602
Inventor 李玉强陈永堂张华才马光坡常永法李岩金刘德胜刘春华李云霞
Owner NEI MONGOL SHENGLONG DADI TECH CO LTD