Water gas, coke oven gas
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1. Water gas is a gas with a low calorific value, produced through a chemical reaction C+H2O=H2+CO that occurs at 600 degrees when superheated steam reacts with weakly bonded coal or anthracite. 2. Semi-water gas is a gas with low calorific value, produced through chemical reactions that occur at high temperatures when air, water vapor, and coal with weak bonding properties but high volatile content react as follows: C+O2=CO2, C+CO2=CO, C+H2O=H2+CO. Its calorific value is 1,800 kcal/m3. Coke oven gas is a gas produced by the high-temperature pyrolysis of coal with moderate cohesion and volatility when it is dry-distilled at around 960 degrees Celsius. Coal does not undergo chemical reactions with other substances. Gas has a high calorific value of 3,300 kcal/m3. Water gas and semi-water gas are primarily used for the production of gas. Coke oven gas is primarily used for producing coke. Many chemical products can also be separated from gas. This post was last edited by shanxg on 2009-2-11 08:39.]
Semi-water gas can be considered a type of mixed gas; it is obtained by mixing air gas with water gas, resulting in a gas with a hydrogen-to-nitrogen ratio of 3:1. This gas is used in the production of ammonia. This post was last edited by Jaguar on 2009-2-11 15:58.]