Issues with catalyst volume selection?
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For coking plant flue gas: Case 1: Flue gas temperature of 280 degrees, flow rate of 250,000 standard cubic meters. Case 2: Flue gas temperature of 320 degrees, flow rate of 220,000 standard cubic meters, with the same volume content of NOX. Is the amount of catalyst required the same in these two cases? In Case 2, although the flow rate of flue gas is lower, the temperature is higher, resulting in a higher volumetric flow rate of the flue gas. If the cross-sectional size of the reactor remains the same, and gas flow velocity is taken into account, the volume of catalyst required should not be less than that in Case 1. However, if the total amount of NOX is considered, more catalyst would be needed in Case 1. So which option should be chosen? What are the main factors in selecting the catalyst volume?
One more question: How much is the investment required for SCR sulfur and nitrogen removal? What are the production and operation costs? How much extra cost will this impose on coking enterprises?
I would like to ask you how you manage to remove sulfur and nitrogen from coking flue gas without shutting down the coke oven ? ? ? ?