Method for producing acetylene derivative and methanol through coal plasma pyrolysis

Abstract

The invention relates to a method for producing an acetylene derivative and methanol through coal plasma pyrolysis, which comprises the following steps in the following sequence: a coal plasma pyrolysis working section, a gas-solid-liquid separation working section, a pyrolysis gas purification working section, a pyrolysis gas separation working section, an acetylene downstream derivative working section, a water coal slurry preprocessing working section, a water gas generation working section, a gas purification processing working section and a methanol synthesis working section; after coal powder passes through the coal plasma pyrolysis working section, a gas phase enters the pyrolysis gas purification working section and is processed and then acetylene enters the downstream derivative working section to prepare the acetylene derivative; and solid-liquid two phases form a water coal slurry after passing through the water coal slurry preprocessing working section, and the water coal slurry enters the water gas generation working section, is processed and then is sent to the methanol synthesis working section to prepare a methanol product. The method has reasonable production process, can be used by combining with the synthetic processes of the acetylene, the methanol and the derivatives thereof, also can be independently used and can be used for producing chloroethylene, vinylon, polyvinyl alcohol, acetylene, carbon black and the like; and the water coal slurry also can be used for integrated gasification combined cycle (IGCC) power generation.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and relates to a method for producing acetylene derivatives and methanol, in particular to a method for producing downstream products of acetylene and methanol by plasma cracking coal. Background technique [0002] As we all know, acetylene is an important basic organic chemical raw material, and its participation in the reaction can produce many chemical products. The traditional process mainly uses calcium carbide hydrolysis and partial oxidation of natural gas to produce acetylene, and its derivatives are also re-joined with the finished product acetylene. Reaction system; calcium carbide hydrolysis technology has been very mature after years of development, but due to long process flow, harsh working environment, large waste of water resources, serious environmental pollution and other reasons, this process has been eliminated abroad; compared with natural gas The oxidation method has ec...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high production cost of acetylene and methanol, poor economic benefit, complex process, low comprehensive utilization rate of gas, solid and liquid phases after rapid coal cracking by plasma method, serious waste of energy, and serious waste of coal in the prior art. Therefore, it provides a plasma with low production cost for acetylene and methanol, high economic benefits, complete utilization of gas, solid and liquid produced by plasma cracking coal, low energy consumption, and reasonable process design. Method for producing acetylene derivatives and methanol by cracking coal

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