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Commercial application of the DZC II-1 catalyst developed on the basis of the DZ-1 catalyst was introduced. The application tests of the catalyst under overload had proved that this catalyst demon- strated satisfactory adaptability to feedstock after continued operation for 20 months with little changes in the bed pressure drop, the reactor inlet temperature and the bed temperature rise. The DZC II-1 catalyst was regarded as the best catalyst for the second-stage hydrogenation of pyrolysis gasoline.
Commercial application of the DZC II-1 catalyst developed on the basis of the DZ-1 catalyst was introduced. The application tests of the catalyst under overload had verified that this catalyst demon- strated ideal adaptability to feedstock after continued operation for 20 months with little changes in the bed pressure drop, the reactor inlet temperature and the bed temperature rise. The DZC II-1 catalyst was as as the best catalyst for the second-stage hydrogenation of pyrolysis gasoline.