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Method for producing acetylene through joint producing ethene by natural gas pyrolysis method

A technology of natural gas and acetylene, which is applied in the field of acetylene production and co-production of ethylene by cracking natural gas to produce acetylene. It can solve the problems of high reaction temperature and high energy consumption, and achieve the effects of reducing costs, shortening mixing time, and making up for the loss of acetylene

Inactive Publication Date: 2012-03-07
TIANJIN TAIYUAN INDAL GAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The problem to be solved by the present invention is to overcome the deficiencies of the prior art, such as the high reaction temperature and high energy consumption of the prior art. The present invention discloses a method for producing acetylene by cracking natural gas.

Method used

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  • Method for producing acetylene through joint producing ethene by natural gas pyrolysis method

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Effect test

Embodiment 1

[0012] In metal materials, liquid nitrogen is used to concentrate acetylene, and the machine is driven to normal operation for 5 minutes. There is a water film on the side wall of the reaction zone to wet the reactor wall along the direction of air flow. The mixing chamber is multi-tube type, and each mixing tube is connected to a nozzle. Therefore, the mixing time is shortened and the preheating temperature of the raw material can be increased to 700 ℃.

Embodiment 2

[0014] In metal materials, liquid nitrogen is used to concentrate acetylene, and the machine is driven to normal operation for 10 minutes. There is a water film on the side wall of the reaction zone to wet the reactor wall along the air flow direction. The mixing chamber is multi-tube type, and each mixing tube is connected to a nozzle. Therefore, the mixing time is shortened and the preheating temperature of the raw material can be increased to 900 °C.

Embodiment 3

[0016] In metal materials, liquid nitrogen is used to concentrate acetylene, and the machine is driven to normal operation for 8 minutes. There is a water film on the side wall of the reaction zone to wet the reactor wall along the direction of air flow. The mixing chamber is multi-tube type, and each mixing tube is connected to a nozzle. Therefore, the mixing time is shortened, allowing the preheating temperature of the raw material to be increased to 750°C.

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Abstract

The invention discloses a method for producing acetylene through joint producing ethene by a natural gas pyrolysis method. The method uses metal materials but not refractory materials, only a few minutes are required from start to the normal operation. A water film provided on the sidewall of a reaction zone wets a reactor wall along the air-flow direction, a mixing chamber is a multitubular type, each mixed tube is connected with a nozzle, so that the mixing time is shortened, the raw material preheating temperature can be allowed to raise to the temperature of 700 DEG C, thereby, the acetylene loss caused by water film dissolving in the reaction zone can be compensated. The method of the invention uses liquid nitrogen for concentrating acetylene, and the liquefied ammonia can be synthesized by using acetylene for concentrating tail gas, so that the cost can be reduced. The method of the invention has reasonable technology and simple production, and is the most simple and ideal method for producing acetylene.

Description

technical field [0001] The invention relates to a chemical product, in particular to a technology for producing acetylene by cracking natural gas and co-producing ethylene, which is suitable for producing acetylene. Background technique [0002] Acetylene can be used for lighting, welding and cutting metal (oxyacetylene flame), and it is also the basic raw material for the manufacture of acetaldehyde, acetic acid, benzene, synthetic rubber, synthetic fiber, etc. [0003] Pure acetylene is a colorless and odorless gas. Acetylene produced from calcium carbide contains impurities such as phosphine, arsine, and hydrogen sulfide, which have special irritating garlic odor and toxicity; it cannot be liquefied under normal pressure, and its sublimation point is -83.8°C, under the pressure of 1.19×105Pa, the melting point is -81°C; flammable and explosive, the explosion limit in air is very wide, 2.5% to 80%; insoluble in water, easily soluble in petroleum ether, ethanol, benzene Su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/24C07C5/00C07C7/00
Inventor 原东凤
Owner TIANJIN TAIYUAN INDAL GAS
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