Tail gas treatment and reutilization for calcium carbide stove
A technology for calcium carbide furnace tail gas and tail gas, which is applied in separation methods, chemical instruments and methods, preparation/separation of ammonia, etc., to achieve the effects of simplifying the treatment process, improving the dust removal effect, and lowering the price
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[0031] 1. The pretreatment process of calcium carbide furnace tail gas, including the cooling, dust removal and purification process of calcium carbide furnace tail gas, among which
[0032] The cooling process refers to sending the tail gas of the calcium carbide furnace into the by-product steam boiler to cool down by the fan. This process can produce 1.3-1.5MPa medium-pressure steam;
[0033] The dust removal process is realized in a multi-tube dust collector;
[0034] The purification process is to use water washing cooling and alkali washing to remove sulfur, that is, the flue gas passes through the water washing tower and alkali washing tower to remove dust particles, tar, CO 2 , sulfur and other impurities, the purified tail gas CO purity is over 90%.
[0035] 2. The tail gas synthesis ammonia process adopts a multi-stage conversion process to convert CO into H 2 , shift gas to remove CO 2 and make H 2 The molecular sieve pressure swing adsorption process is adopted...
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