Low activity dust coal catalytic gasifying method

Abstract

The invention discloses a low activity dust coal catalytic gasifying method which consists of, spraying industrial alkali waste liquid to low active powered coal or coal carbonization coal coke, mixing and drying, then entering fluid bed gasification stove for catalyzed gasification with air / aqueous vapor or aqueous vapor, basic ash and slag can be automatically discharged from the bottom or lateral surface or the gasification furnace.

Description

Technical field:

[0001] The invention belongs to a kind of high-efficiency catalytic gasification of low-activity anthracite pulverized coal or dry distillation coal char with a volatile content of less than 7% by using an industrial waste alkali catalyst to increase the gas yield, improve the calorific value of the gas and make the alkaline ash calcined harmless Methods. Background technique:

[0002] Coal catalytic gasification is an advanced gasification method that reduces the reaction temperature, increases the reaction rate, and controls the gas composition. Since the British patent was first proposed in 1869, many scholars at home and abroad have studied the mechanism of catalytic gasification of coal, the selection of various catalysts, the optimization of catalytic gasification process conditions, and the intermediate test of catalytic gasification process (ECCG) for the production of substitute natural gas. etc. have carried out extensive research, but there are n...

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