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Method of producing chlorides from ethane

A technology for chlorides and chlorinated products, applied in chemical instruments and methods, organic chemistry, preparation of dehydrohalogenation, etc., can solve the problems of increased cost of vinyl chloride and increased difficulty in oil exploitation, and improved economic and environmental benefits. , The effect of reducing the preparation cost and high selectivity

Pending Publication Date: 2020-02-18
杰瑞德工业设备(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ethylene mainly comes from the cracking of naphtha, and the difficulty of oil extraction gradually increases, and the cost of producing vinyl chloride by ethylene method continues to increase

Method used

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  • Method of producing chlorides from ethane
  • Method of producing chlorides from ethane
  • Method of producing chlorides from ethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Snake tube preheater ensures that the mixed gas at the outlet of the preheater is ≥150℃.

[0086] Tubular carbon steel reactor With heating and cooling heat conduction oil jacket.

[0087] Take 30m 3 Feed the mixed gas with a molar ratio of ethane to chlorine of 1:1.8 into the preheater at a rate of 1 / h, so that the temperature of the mixed gas entering the reactor after preheating is 165℃, and the pressure inside the reactor is controlled to 0.25MpaG. The oil temperature of the reactor jacket makes the outlet temperature of the reactor 250±5℃, and the mixed gas stays in the mixer for 5.0s.

[0088] In this example, the ethane conversion rate is 95.27%.

Embodiment 2

[0090] The specific operation is the same as in Example 1, except that the oil temperature of the reactor jacket is controlled so that the reactor outlet temperature is 200±5°C and the ethane conversion rate is 95.11%.

Embodiment 3

[0092] The specific operation is the same as in Example 1, except that the oil temperature of the reactor jacket is controlled so that the outlet temperature of the reactor is 300±5°C and the ethane conversion rate is 96.28%.

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Abstract

The invention relates to a method of producing chlorides from ethane, and relates to the field of chemical synthesis. The method comprises following steps: making mixed gas composed of chlorine gas and ethane carry out reactions in a reactor under a pressure of 0.15-0.35 MpaG to obtain ethane chlorides comprising ethane dichloride and ethane trichloride, wherein the temperature of the outlet of the reactor is 150 to 320 DEG C. The ethane chlorides are separated and purified to obtain ethane dichloride and ethane trichloride. Ethane dichloride is thermally cracked to obtain vinyl chloride. Ethane trichloride is saponified to obtain vinylidene chloride. Ethane is taken as the raw material, and chlorine is taken as the chlorinating agent to carry out chlorination reactions. Through simple separation, separated ethane dichloride is thermally cracked to obtain vinyl chloride, separated ethane trichloride is saponified to obtain vinylidene chloride, the preparation cost of vinyl chloride andvinylidene chloride is reduced, at the same time, the economic benefits and environmental benefits are obviously increased, and the method is suitable for industrial production.

Description

Technical field [0001] This application relates to the field of chemical synthesis, specifically, to a method for producing chloride from ethane. Background technique [0002] There are two production methods for vinyl chloride, one is the acetylene method (accounting for about 45%, basically all in China), and the other is the ethylene method (accounting for about 55%). [0003] The acetylene method is: calcium carbide (CaC 2 ) Reacts with water to generate acetylene and calcium hydroxide. Acetylene and hydrogen chloride generate vinyl chloride under the action of metal chloride-activated carbon catalyst. At present, 85% of vinyl chloride in China comes from the calcium carbide acetylene process. Almost all of the hydrogen chloride consumed is produced by the photochemical reaction of chlorine and hydrogen. Hydrogen is an important industrial raw material whose value is far greater than that of synthetic hydrogen chloride. Therefore, the preparation cost of acetylene method is hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C17/10C07C19/043C07C19/045C07C19/05C07C17/25C07C21/06C07C21/08
CPCC07C17/10C07C17/25C07C19/043C07C19/045C07C19/05C07C21/06C07C21/08
Inventor 薛之化许柏文
Owner 杰瑞德工业设备(北京)有限公司
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