Heat consumption for coking

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This post was last edited by dengdpan on 2011-9-19 16:10. There are four ways to express the heat consumption required for coking: heat consumption per unit of wet coal, heat consumption equivalent to that of dry coal, absolute heat consumption per unit of dry coal, and the equivalent heat consumption (with 7% H2O). Generally, the heat consumption is used as a criterion to evaluate the thermal performance of coke ovens. So when calculating the heat consumption per unit of wet coal, taking mixed gas as an example, we can use one year as the calculation unit. The heat consumption per unit of wet coal, qf, is equal to (amount of coke oven gas x calorific value of coke oven gas + amount of blast furnace gas x calorific value of blast furnace gas) / amount of wet coal consumed. The actual heat consumption, qh, is then equal to qf – 33.49(W-7). In this calculation, the heat from the waste gas that leaks from the carbonization chamber into the combustion chamber is not taken into account. Is this way of calculation correct? I would like to ask the experts: is this how you carry out calculations in feasibility studies or in factories? Please give me some advice!