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1, 2-dichloroethane cracking catalyst, as well as preparation method and application thereof

A technology for cracking catalysts and dichloroethane, applied in 1 field, can solve the problems of high reaction temperature, energy waste, cost increase, etc., and achieve the effect of low reaction temperature, high conversion rate of dichloroethane, and stable operation

Inactive Publication Date: 2012-11-14
新疆化工设计研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high reaction temperature leads to high energy consumption, increased cost, and waste of energy; at the same time, high temperature increases the rate of side reactions, and problems such as coking and carbon deposition may also occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] [Example 1] 60 g of a catalyst with a loading capacity of 20% is filled in an experimental fixed-bed reactor, and the investigation on the reaction activity of 1,2-dichloroethane cracking to vinyl chloride is carried out at normal pressure and 320° C., wherein Mass space velocity of 0.8 hours -1 , The cracking rate of dichloroethane is 33.27%.

Embodiment 2

[0017] [Example 2] 60 g of a catalyst with a loading capacity of 20% is filled in an experimental fixed-bed reactor, and the investigation of the reaction activity of 1,2-dichloroethane cracking to vinyl chloride is carried out at normal pressure and 340° C., wherein Mass space velocity of 1.6 hours -1 , The cracking rate of dichloroethane is 48.59%.

Embodiment 3

[0018] [Example 3] 55 g of catalysts with a loading capacity of 10% were filled in an experimental fixed-bed reactor, and the investigation of the reaction activity of 1,2-dichloroethane cracking to vinyl chloride was carried out at normal pressure and 360° C., wherein Mass space velocity of 0.90 hours -1 , The cracking rate of dichloroethane is 99.23%.

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PUM

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Abstract

The invention relates a preparation method and an application of a 1, 2-dichloroethane cracking catalyst, and the catalyst can be used in the process of producing chloroethylene by cracking 1, 2-dichloroethane for optimizing and improving the process. Specifically, activated carbon is taken as a carrier, the main body catalyst is attached on the carrier through an immersion method, and the obtained catalyst is used in the process of producing the chloroethylene by cracking the 1, 2-dichloroethane on a fixed bed reactor. The catalyst can show the advantages of low reaction temperature, low power consumption, high conversion rate of the dichloroethane, high selectivity and yield of the chloroethylene, long service life of the catalyst, smooth operation and the like when the catalyst is used in the process of producing the chloroethylene by cracking the 1, 2-dichloroethane via long-term continuous operation of the fixed bed reactor.

Description

technical field [0001] The invention relates to a preparation method and application of a 1,2-dichloroethane cracking catalyst. Specifically, activated carbon is used as a carrier, and the main catalyst is attached by an impregnation method, and is used in a fixed-bed reactor for 1,2-dichloroethane Application in the process of producing vinyl chloride by catalytic cracking of alkane. Background technique [0002] With the development of petrochemical industry, it has become one of the main production routes of polyvinyl chloride (PVC) to produce dichloroethane by oxychlorination of ethylene, and then produce vinyl chloride by cracking. The cracking of dichloroethane uses tubular cracking furnaces in industry, and the reaction temperature is controlled at about 500°C to increase the reaction rate and conversion rate. However, high reaction temperature leads to high energy consumption, increased cost, and waste of energy. At the same time, high temperature increases the rate...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J23/02B01J23/75B01J23/72B01J23/78C07C21/06C07C17/25
Inventor 摆玉龙庞健
Owner 新疆化工设计研究院有限责任公司
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