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Solid mercury catalyst for acetylene hydrochlorination

An acetylene hydrochlorination, mercury catalyst technology, applied in physical/chemical process catalysts, organic chemistry, chemical instruments and methods, etc., can solve the problem of poor thermal stability of mercury chloride, excessive consumption of mercury resources, and mercury-containing mercury chloride. It can reduce mercury pollution, improve activity and use efficiency, and reduce mercury pollution.

Active Publication Date: 2011-06-08
XINJIANG CORPS MODERN GREEN CHLOR ALKALI CHEM ENG RES CENT LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of too high mercury content in traditional mercuric chloride, excessive consumption of mercury resources; poor thermal stability of mercuric chloride, easy loss, rapid catalyst deactivation, serious environmental pollution, etc., and provides a Acetylene hydrochloride mercury immobilization catalyst with high catalytic activity and high thermal stability

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A mercury-fixed acetylene hydrochloride catalyst, comprising the following components: 100 parts of activated carbon carrier, 1 part of mercuric chloride as main catalytic component, 1 part of cobalt chloride as auxiliary component, 1 part of potassium chloride as auxiliary component; Bulk density 0.5g / cm 3 , specific surface area 600m 2 / g; the main catalytic component and auxiliary components are configured into an aqueous solution with a pH ≤ 1; the immersion temperature is about 80°C, and the time is about 8 hours; the temperature during drying is about 100°C, so that the water content is less than 1%; in acetylene In the gas phase reaction to synthesize vinyl chloride with hydrogen chloride, the reaction temperature is 120°C, and the molar ratio of hydrogen chloride to acetylene is 1.05:1.

Embodiment 2

[0016] A mercury-fixed acetylene hydrochloride catalyst, comprising the following components: 100 parts of activated carbon carrier, 8 parts of main catalytic component mercury chloride, 10 parts of auxiliary component cobalt chloride, 10 parts of auxiliary component potassium chloride; Bulk density 0.5g / cm 3 , specific surface area 600m 2 / g; the main catalytic component and auxiliary components are configured into an aqueous solution with a pH ≤ 1; the immersion temperature is about 80°C, and the time is about 8 hours; the temperature during drying is about 100°C, so that the water content is less than 1%; in acetylene In the gas phase reaction to synthesize vinyl chloride with hydrogen chloride, the reaction temperature is 120°C, and the molar ratio of hydrogen chloride to acetylene is 1.05:1.

Embodiment 3

[0018] A mercury-fixed acetylene hydrochloride catalyst, comprising the following components: 100 parts of activated carbon carrier, 6 parts of main catalytic component mercury chloride, 5 parts of auxiliary component cobalt chloride, 5 parts of auxiliary component potassium chloride; Bulk density 0.5g / cm 3 , specific surface area 600m 2 / g; the main catalytic component and the auxiliary component are configured into an aqueous solution with a pH ≤ 1; the immersion temperature is about 80 ° C, and the time is about 8 hours; the drying temperature is about 100 ° C, so that the water content mass fraction is < 1%; In the gas phase reaction of acetylene and hydrogen chloride to synthesize vinyl chloride, the reaction temperature is 120°C, and the molar ratio of hydrogen chloride to acetylene is 1.05:1.

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Abstract

The invention discloses a solid mercury catalyst for improving activity and stability of acetylene hydrochlorination reaction, which comprises the following components in part by weight: 100 parts of active carbon carrier, 1 to 8 parts of mercuric chloride serving as a main catalysis component and 1 to 10 parts of auxiliary components, wherein the auxiliary components A and B account for 1 to 10 parts respectively, the auxiliary component A is cobalt chloride or manganese chloride, and the auxiliary component B is potassium chloride or ammonium chloride. The solid mercury catalyst aims to solve the problems of over high mercury content of the current mercuric chloride catalyst, poor catalyst stability, over high mercury consumption in the production because the active ingredients are easy to run off, quick catalyst inactivation and serious environmental pollution. The activity and the stability of the solid mercury catalyst are improved by 5 to 50 percent compared with those of the simple mercuric chloride catalyst, the usage efficiency of the catalyst can be effectively improved, the mercury loss is reduced, the production cost is reduced, and the environmental pollution of the mercury is reduced.

Description

technical field [0001] The invention relates to a mercury-solid catalyst used in acetylene hydrochlorination to synthesize vinyl chloride. Background technique [0002] Polyvinyl chloride is one of the five major synthetic resins in the world, widely used in important areas of the national economy such as industry, agriculture, and building materials. Vinyl chloride monomer is an important raw material for organic chemical synthesis, and its main purpose is to produce polyvinyl chloride resin and other vinyl chloride copolymers. As we all know, in the industry of producing vinyl chloride by hydrochlorination of acetylene in my country, relatively old mercuric chloride loaded on activated carbon has been used as a catalyst, and the mercuric chloride content reaches 10% to 14%. Although the activity and service life of this catalyst are relatively satisfactory, it has the following disadvantages: the mercury content is too high, and the consumption of mercury resources is too...

Claims

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Application Information

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IPC IPC(8): B01J27/138C07C21/06C07C17/04
Inventor 张新力吴彬周军李国栋张磊李静王小艳陈万银夏锐庞晓东张传彩王小昌张学鲁恺峰李朝阳
Owner XINJIANG CORPS MODERN GREEN CHLOR ALKALI CHEM ENG RES CENT LTD
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