Technical process for gasification of fluidized-bed CO gasifying furnace and apparatus thereof

Abstract

The invention relates to a gasification process which uses O2+CO2 or air+CO2 as a gasifying agent for fluidized bed CO gasification furnace, and its device, using O2 and CO2 as gasifying agent, and 0-10 mm-sized fine coke and blind coal as raw materials, adopting continuously-gasifying fluidized bed gasification furnace as a gasifier, namely adopting continuous gasification process; or using air and CO2 as gasifying agent, using 0-10 mm-sizd fine coke, blind coal, lean coal, long flame coal and wood coal as raw materials, adopting intermittently-gasifying fluidized bed gasification furnace as a gasifying device, namely adopting intermittent gasification process, reducing CO2 gas into CO gas to make highly pure CO gas as organic synthetic raw material. The advantage are the raw material source is rich, it retrieves and uses the CO2 gas to act as the gasifying agent.

Description

Technical field [0001] The invention relates to a new coal gasification process in the field of coal chemical industry, in particular to a gasification process method and a device for a fluidized bed CO gasifier. Background technique [0002] CO is the main raw material for organic synthesis of one-carbon chemistry. It reacts with water, methanol, ammonia, etc. to produce organic chemicals such as formic acid, formamide, and acetic acid. At present, domestic production of CO gas mostly uses fixed-bed gasifiers to produce water gas or air gas, and then separates high-purity CO gas from water gas or air gas. There are enterprises in my country that use CO and methanol to produce acetic acid. 2 and O 2 As a gasification agent, a fixed bed gasifier is used to produce CO gas. This process uses cast coke as a raw material, and the raw material price is high. Since the temperature of the fixed bed gasifier along the furnace height gradually decreases, the temperature at the furna...

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Problems solved by technology

There are enterprises in my country that use CO and methanol to produce acetic acid. 2 and O 2 As a gasification agent, a fixed bed gasifier is used to produce CO gas. This process uses cast coke as a raw material, and the raw material price is high. Since the temperature of the fixed bed gasifier along the furnace height gradually decreases, the temperature at the furnace outlet is about for 600°C due to The reaction is a reversible reaction, which makes the equilibrium composition of CO drop at the outlet temperature of the furnace, so it is difficult for the fixed-bed gasifier to obtain high-content CO raw material gas

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