The relationship between the calorific value of gas produced by a gas generator and its composition

Theoretically, the temperature of the gasifier is determined by the amount of C that is completely burned; the remaining C must be converted into useful gas. Therefore, as the calorific value of coal increases, less coal is needed for complete combustion, and the rest must be converted into useful gas. Of course, the ash content also plays a role in this process!

This post was last edited by lflsedin on 2012-9-4 21:19. Is there a relationship between the calorific value of the gas produced by a gas generator and its composition? Specifically, does a higher content of CO and H2 result in a higher calorific value? Is it related to other factors as well? Also, under the premise of normal furnace conditions and proper operation, does coal with a high calorific value produce gas with a higher heat value as well? Here, the calorific value of the coal is high, but the levels of CO and H2 in the generated gas are low, yet less coal is required. Answer: The calorific value of the gas produced by a gas generator is related not only to the contents of CO and H2 but also to the content of CH4. Under normal operating conditions, the calorific value of the gas is closely linked to the degree of degradation of the fuel as well as various industrial parameters. It’s not necessarily the case that gas produced from coal with a high calorific value will have a high calorific value itself; all factors need to be taken into consideration. Coal has a high calorific value, which means it contains a high amount of fixed carbon; therefore, less coal is required to produce the same amount of gas. The levels of CO and H2 in the gas are low; assuming that operational factors are not at play, it is likely that the reactivity of the coal has decreased, with a low volatile content being the most probable cause. You can check by comparing your raw coal before and after to see this.