Preparation method for carrier of hydrotreating catalyst

Abstract

The invention discloses a preparation method for a carrier of a hydrotreating catalyst. The method comprises the following steps: (i) preparing an Al-SBA-15 molecular sieve by taking amorphous silica-alumina dry glue as a raw material and adopting a P123 triblock copolymer as a template agent; (ii) subjecting the Al-SBA-15 mesoporous molecular sieve prepared in the step (i) and aluminum oxide to mixing, kneading and forming so as to obtain a carrier precursor; and (iii) impregnating the carrier precursor obtained in the step (ii) with an impregnating solution containing modified silicone oil, and then conducting drying and roasting to obtain the carrier of the hydrotreating catalyst. The hydrotreating catalyst prepared by adopting the carrier is suitable for a hydrotreating process of heavy distillate oil and has good activity.

Description

technical field [0001] The invention relates to a hydrogenation treatment catalyst carrier, in particular to a method for preparing a catalyst carrier suitable for the hydrogenation treatment of heavy distillate oil. Background technique [0002] The degree of heavy crude oil continues to deepen, and the content of impurities such as nitrogen, sulfur, oxygen, and metals in crude oil continues to increase. The existence of these impurities not only poisons the catalyst in the subsequent treatment process, but also emits a large amount of sulfur oxides and nitrogen. Harmful gases such as oxides endanger human health and environmental protection. The use of catalysts with high activity and good stability can not only ease the process conditions, but also reduce hydrogen consumption and achieve energy saving and consumption reduction. [0003] Hydrotreating catalysts are generally loaded with metal oxides containing Group VIII and Group VIB into refractory inorganic porous mate...

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Problems solved by technology

[0008] The hydrotreating catalyst currently used in the industry encounters poor quality feed oil (high sulfur and nitrogen content) during industrial operation, and it is difficult to meet the nitrogen content required by the cracking section without changing the process conditions, causing long-term The catalyst in the cracking section is poisoned, and the operating cycle of the unit is shortened; if the temperature of the reactor in the refining section is raised, the inlet temperature of the cracking section reactor is too high, forming a temperature inversion phenomenon, which seriously affects the performance of the cracking agent.