China Petroleum network news recently, after half a month of trial operation, Daqing Petrochemical Co refinery in the delayed coking unit production of petroleum coke process, successfully mixed dross. As of August 8th, a total of 70 tons of dross were added, and the refining ratio reached 15%.
It is understood that scum refers to the accumulation of sewage treatment plants plankton, emulsified oil and other organic polymers, dehydration after the price of 30 yuan per ton factory sales. According to the new environmental law requirements, next year, the dross factory to pay the corresponding processing costs.
In order to expand the Refinery Scum outlet, set up a technology research group, using the characteristics of delayed coking unit for processing heavy oil, waste oil, through research and demonstration, combined with the actual composition of the scum, scum into the coke tower of quench oil line blending scheme. The technical personnel can solve the problems of more than 95% of the moisture content of the scum by mixing, stationary and dewatering, and thus has certain economic benefits.
In order to prevent the coke tower and fractionating tower from producing a great fluctuation, technicians and post staff strengthen the inspection to ensure that the indexes are running smoothly, and the technical preparation is made for the next step to increase the amount of mixing.
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