Abstract:

The new final cooling process integrates gas cooling,naphthalene removal and reuse of condensate,so that gas can be cooled down step by step in gas purification plant.Taking the condensate from the upper stage of final cooler as the soft water used in ammonia stripping unit,coal water quantity in the coke oven gas purification plant can be reduced.Wash oil is used in the final cooler to remove naphthalene in gas.The naphthalene-containing wash oil is sent to benzol scrubbing unit for regeneration after heated and separated from water.