Grading method of catalyst

The invention provides a grading method of a catalyst, which comprises a catalytic reaction unit, in the catalytic reaction unit, the total acid amount of a catalyst is firstly increased and then reduced in the material flowing direction; the molar content ratio of # imgabs0 # acid in the catalyst i...

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Bibliographische Detailangaben
Hauptverfasser:	YANG XIAODONG, GUO JINTAO, SUN FAMIN, LIU WENYONG, GAO YUXIN, XIE BIN, LIU YANFENG, ZHANG QUANGUO, ZHAO TAN, LU XUEFENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention provides a grading method of a catalyst, which comprises a catalytic reaction unit, in the catalytic reaction unit, the total acid amount of a catalyst is firstly increased and then reduced in the material flowing direction; the molar content ratio of # imgabs0 # acid in the catalyst is firstly increased and then reduced; in the material flow direction, the catalytic reaction unit sequentially comprises a first catalyst layer and a second catalyst layer which are adjacent to each other, and in the first catalyst layer, the content of weak acid is greater than that of medium-strong acid; in the second catalyst layer, the content of weak acid is smaller than that of medium-strong acid. According to the grading method of the catalyst, the catalyst is graded, so that the catalytic effect can be improved, the yield of the base oil is further improved, the viscosity index of the base oil is improved, and the low-temperature performance of the pour point and the cloud point of the base oil is reduced.