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Catalyst for producing vinyl chloride by hydrochlorination of acetylene and application method thereof

An acetylene hydrochlorination and catalyst technology, which is applied in physical/chemical process catalysts, chemical instruments and methods, organic chemistry, etc., can solve problems such as limited production capacity per unit catalyst, reduced catalyst life, overheating, etc., and achieve good industrial applications. Prospects, improving catalyst life, and the effect of fast heat and mass transfer

Active Publication Date: 2018-11-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One aspect of the present application provides a catalyst for the production of vinyl chloride by hydrochlorination of acetylene, which solves the problem of local overheating of the system caused by the exothermic reaction of acetylene and hydrogen chloride in the prior art, resulting in reduced catalyst life and limited unit catalyst production capacity. limit problem

Method used

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  • Catalyst for producing vinyl chloride by hydrochlorination of acetylene and application method thereof
  • Catalyst for producing vinyl chloride by hydrochlorination of acetylene and application method thereof
  • Catalyst for producing vinyl chloride by hydrochlorination of acetylene and application method thereof

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Experimental program
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Effect test

Embodiment 1-6

[0036] Embodiment 1-6 tubular fixed bed reactor

[0037] Fill a certain amount of solid-phase active components into the tubular fixed-bed reactor, the reactor raw material gas inlet is equipped with a gas distributor, and the product outlet is equipped with a cooling reflux device, and then a certain amount of liquid-phase active components are loaded into the reactor, The reaction raw material gas is introduced from the lower part of the reactor, and the reaction product flows out from the upper part. The reaction raw material gas acetylene and hydrogen chloride are passed into the reactor according to the molar ratio of 1:0.5~5, and the reaction gas flow rate / liquid phase catalyst volume=1~130h -1 , The reaction temperature is 80-120°C, and the reaction product is analyzed by gas chromatography to determine the space-time yield. The diameter of the reactor used is 15mm, the height is 300mm, and the cooling temperature at the outlet of the reactor is 0-5°C. See Table 1 for ...

Embodiment 7-12

[0043] Embodiment 7-12 tank type slurry bed reaction:

[0044] Fill a certain amount of powdery solid-phase active components into the kettle-type slurry bed reactor, the particle size is 10-500 microns, the reactor raw material gas inlet is equipped with a gas distributor, and the product outlet is equipped with a cooling reflux device, and then the A certain amount of liquid-phase active components are loaded into the reactor, the reaction raw material gas is introduced from the lower part of the reactor, and the reaction product flows out from the upper part, and the reaction raw material gas acetylene and hydrogen chloride are passed into the reactor according to the molar ratio of 1:0.5~5, and the reaction Gas flow rate / liquid phase catalyst volume=1~130h -1 , The reaction temperature is 80-120°C, and the reaction product is analyzed by gas chromatography to determine the space-time yield. See Table 2 for the types, shapes and amounts of the solid-phase active components...

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Abstract

The application relates to a catalyst for producing vinyl chloride by hydrochlorination of acetylene and an application method thereof. The catalyst includes a liquid-phase active component containing anhydrous tin tetrachloride and a solid-phase active component. The solid-phase active component is amorphous silicon-aluminum oxide and / or aluminum oxide. The reactor used in the method is a fixed bed reactor or a slurry bed reactor, the reactor inlet is equipped with a gas distributor, and the outlet is equipped with a cooling reflux device. The catalytic system is simple in composition, fast in mass and heat transfer, and has no reaction hot spots; the catalyst is cheap and easy to obtain, and can be recycled, with stable reaction activity and long service life of the catalyst.

Description

technical field [0001] The application relates to a mercury-free non-noble metal catalyst for producing vinyl chloride by hydrochlorination of acetylene, which belongs to the field of catalytic chemical industry. Background technique [0002] Vinyl chloride monomer is the basic raw material for the synthesis of various chemical products. Its main use is to produce polyvinyl chloride. Due to its good physical, chemical and mechanical properties, polyvinyl chloride is widely used in various industries. Acetylene method (acetylene hydrochlorination method), ethylene method and ethane method are the main methods for industrially synthesizing vinyl chloride monomer. my country's basic national conditions of "more coal, less gas, and less oil" determine that the acetylene method has become the mainstream process for the synthesis of vinyl chloride monomer in my country. However, the active component of the industrial catalyst used in the acetylene process, HgCl 2 , gradually vol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/135C07C21/06C07C17/08
Inventor 宋智甲刘广业庞晓东徐云鹏刘中民李铭芝李世英
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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