Coal gas production methods by coal gasifier

Coal gas is one of combustible gases. Mainly composed of carbon monoxide, hydrogen, nitrogen, carbon dioxide and so on. It divided into Sub-air gas and mixed gas. The former is obtained by function between coal and the air, the latter is obtained by function between coal with air and steam, the heat value is higher than the former. Used for heating in metal furnace, glass furnace; coke oven, and also can be used for mixing gas with high heat value gas.

the method produce furnace gas is to burn coal in furnace,but do not blown enough air into the bottom of the furnace to make coal can not burn violent, and thus produce large amounts of carbon monoxide, this is how the producer gas produced. This approach make the furnace discharge exhaust gas mainly composed by carbon monoxide, carbon dioxide and nitrogen.

The method of manufacture water gas is ignited coal in a furnace, blow sufficient air in the bottom to make the coal burn violent, then turning off fans, spray the steam into the furnace in turn from the bottom and the roof, and later co-produced a lot of hydrogen and carbon monoxide after compounds with hot coal, and then mix with nitrogen in the air and the remaining water vapor, and this form the water gas,.

Coke oven gas production is the coal after crushing, washing and press, mixed as different ratio into the coke coal, heating isolated from the air, high temperature to decompose the coal to produce gas and coal tar,.

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