Method for continuously producing chloroethane

A technology of ethyl chloride and ethanol, which is applied in the field of continuous production of ethyl chloride, can solve the problems of large equipment volume, low reaction efficiency, high energy consumption of waste water, etc., achieve small device volume, reduce reaction temperature, and reduce production equipment costs Effect

Pending Publication Date: 2021-11-02
ZHEJIANG DIBANG CHEM +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The method for continuous production of ethyl chloride in the prior art still has problems such as low reaction efficiency, large equipment volume, large amount of waste water and high energy consumption.

Method used

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  • Method for continuously producing chloroethane

Examples

Experimental program
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Effect test

Embodiment 1

[0074]Configure aluminum chloride-zinc chloride-hydrochloric acid solution in the 5-party circulating liquid receiving tank, wherein the mass ratio of aluminum chloride:zinc chloride is 1:2; the hydrogen chloride content in the solution is 10%; aluminum chloride-zinc chloride The total content is 30%. Turn on the hypergravity reactor and hypergravity refining equipment, and the speed is controlled at 500r / min. The circulating pump P is turned on to circulate the composite catalyst system solution, and the temperature is raised to 115-120° C. through the circulating liquid heat exchanger A. Turn on the concentrated hydrochloric acid analysis device, feed 31% concentrated hydrochloric acid, control the flow rate at 7600kg / h, control the analysis temperature at 125-130°C, and monitor and feed the hydrogen chloride gas generated with a flow meter, and the feed rate is 1070kg / h. The liquid ethanol is heated in the plate heat exchanger, converted into ethanol gas and started to fee...

Embodiment 2

[0082] Configure aluminum chloride-zinc chloride-hydrochloric acid solution in the 5-party circulating liquid receiving tank, wherein the mass ratio of aluminum chloride:zinc chloride is 1:2.5; the hydrogen chloride content in the solution is 10%; aluminum chloride-zinc chloride The total content is 40%. Turn on the hypergravity reactor and hypergravity refining equipment, and the speed is controlled at 500r / min. The circulating pump P is turned on to circulate the composite catalyst system solution, and the temperature is raised to 120-125° C. through the circulating liquid heat exchanger A. Turn on the concentrated hydrochloric acid analysis device, feed 31% concentrated hydrochloric acid, control the flow rate at 6600kg / h, control the analysis temperature at 130-135°C, and monitor the feed of hydrogen chloride gas with a flow meter, and the feed rate is 1070kg / h. The liquid ethanol is heated in the plate heat exchanger, converted into ethanol gas and started to feed, where...

Embodiment 3

[0084] Configure aluminum chloride-zinc chloride-hydrochloric acid solution in the 5-party circulating liquid receiving tank, wherein the mass ratio of aluminum chloride:zinc chloride is 1:3; the hydrogen chloride content in the solution is 15%; aluminum chloride-zinc chloride The total content is 50%. Turn on the hypergravity reactor and hypergravity refining equipment, and the speed is controlled at 500r / min. The circulating pump P is turned on to circulate the composite catalyst system solution, and the temperature is raised to 125-130° C. through the circulating liquid heat exchanger A. Turn on the concentrated hydrochloric acid analysis device, feed 31% concentrated hydrochloric acid, control the flow rate at 6500kg / h, control the analysis temperature at 135-140°C, and monitor and feed the hydrogen chloride gas generated by a flow meter, and the feed rate is 1070kg / h. The liquid ethanol is heated in the plate heat exchanger, converted into ethanol gas and started to feed...

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Abstract

The invention relates to a method for continuously producing chloroethane. The method comprises the following steps: enabling ethanol gas and hydrogen chloride gas to be in contact with an aluminum chloride-zinc chloride-hydrochloric acid composite catalyst solution in a supergravity reactor for chlorination reaction; carrying out heat exchange on the crude chloroethane gas and liquid ethanol to obtain cooled crude chloroethane gas; wherein at least part of the ethanol gas is obtained by gasifying the liquid ethanol during heat exchange; and washing the cooled crude chloroethane gas with water, removing water from the washed refined chloroethane gas through a demister and a renewable water absorbent, compressing, cooling and liquefying to obtain the finished chloroethane. The method provided by the invention has the advantages of high production efficiency and yield, small volume of reaction equipment, less generated wastewater and low energy consumption for continuous production of chloroethane.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a method for continuous production of ethyl chloride. Background technique [0002] At present, the industrial production of ethyl chloride generally adopts the ethylene hydrochlorination method, a few use the ethane chlorination method, and a very small number use the ethanol chlorination method; and a large amount of recovered ethanol and by-product hydrochloric acid are produced in my country's industrial production, which makes the recovery of ethanol and by-products Hydrochloric acid has become a chemical raw material with low added value, so the production of ethyl chloride by ethanol chlorination has significant economic benefits in our country. [0003] Industrially, the production of ethyl chloride by the ethanol method is basically carried out in tank reactors, and there are mainly two methods. One is to put concentrated hydrochloric acid and ethanol into the tank react...

Claims

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Application Information

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IPC IPC(8): C07C17/16C07C17/38C07C19/043B01J4/00B01J19/00B01J19/18
CPCC07C17/16C07C17/38B01J4/001B01J4/008B01J19/0006B01J19/0013B01J19/18B01J2204/005B01J2204/007B01J2219/00103C07C19/043
Inventor 罗勇唐智勇周海斌陈建峰邹海魁初广文孙宝昌张亮亮徐斌徐万福朱庆阳
Owner ZHEJIANG DIBANG CHEM
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