The two-stage gasifier adds a carbonization section of appropriate height and structure, so that the coal is slowly heated in the carbonization section and undergoes low-temperature carbonization. The tar produced will not crack, and the tar has low viscosity and good fluidity. When hot gas is transported over long distances, it is not easy to block the pipeline.

Gas system:Two-stage gas generatorBy rotating the lower coal valve of the coal adding system, the bituminous coal bunker is opened alternately and enters the furnace. Air and self-produced steam are mixed in the air inlet pipe at the bottom of the furnace. As a gasification agent, they enter the furnace and undergo a complex oxidation-reduction reaction with the coal to generate gas, which is led out from the top gas pipe.

The top gas first enters the I-level electric coking to remove tar; the bottom gas has a higher temperature and first enters the cyclone dust collector and forced blast cooler to remove large particles of dust in the gas: the top gas passes through the I-level electric coking to remove tar and undergoes cyclone dust removal The bottom gas of the air cooler and the air cooler enters the upper part of the scrubber respectively. After indirect heat exchange with circulating water in the scrubber and cooling, it mixes at the bottom of the scrubber and enters the II-stage electric coke capturer for further decoking to form clean low-pressure gas and send it to the pressurizer. The pressurizer pressurizes low gas to form high-pressure gas for use in the furnace.

The above is the detailed explanation of the gas system of the two-stage gas generator.