Hydrorefining catalyst for preparing fuel oil from coal tar, preparation method and application method thereof

Abstract

The invention provides a hydrorefining catalyst special for new coal tar, a preparation method and an application method thereof, which are used for solving problems existing in the conventional hydrogenation catalyst for coal tar. The hydrorefining catalyst consists of active components, aids and carriers, wherein the active components refer to MoO3 and NiO or MoO3 and CoO; the aids refer to Bi2O3 and K2O; and the carriers refer to alumina and barium oxide. According to calculation by the form of an oxide, the active components, the aids and the carriers account for 15 to 35 percent, 2 to 5 percent and 60 to 83 percent of the total mass of the catalyst respectively. The catalyst is prepared by the following steps of: kneading, grinding, extruding into strips, molding, soaking, performingcatalyst post-treatment and the like. New ultrasonic soaking technology is introduced, and the preparation condition of the catalyst is controlled strictly. Compared with the prior art, the catalyst has high surface physical and chemical properties, high purified atom degumming activity, high hydrogenation saturation capability, high stability and high mechanical intensity, and the quality and yield of hydrogenation product oil can be enhanced effectively.

Description

technical field [0001] The invention belongs to the technical field of producing fuel oil by hydrogenation of coal tar, and in particular relates to a hydrorefining catalyst for producing fuel oil from coal tar and a preparation and application method thereof. Background technique [0002] At present, my country's energy status is "short of oil, less gas, and rich in coal". The problem of energy supply has become a prominent problem facing my country's economic development and national security. In the case of limited petroleum resources, it is obviously of great practical and strategic significance to develop the coal chemical industry and develop deep processing technologies and products. Among coal utilization methods, coal pyrolysis can provide a variety of coal-based products, which is an effective way to clean, efficiently and rationally utilize low-rank coal resources. Coal pyrolysis oil, or coal tar, is a by-product of coal coking, dry distillation and gasification,...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to propose a new special hydrogenation catalyst for coal tar and its preparation and application method in view of the problems existing in the existing coal tar hydrogenation catalyst, and to achieve high activity by strictly controlling the catalyst preparation process conditions Purpose of High Stability Coal Tar Hydrogenation Catalyst

The catalyst of the present invention overcomes the disadvantages of the existing commodity petroleum distillate hydrotreating catalysts when it is used for coal tar hydrogenation, such as general activity, weak hydrothermal stability and high temperature resistance, easy deactivation, etc., and it has the advantages of being suitable for processing coal tar components High specific surface area, large pore size, high pore volume and suitable active center. At the same time, it has good mechanical strength and hydrothermal properties. It can effectively convert coal tar or coal tar fractions when used in combination with downstream hydrocracking catalysts. for high quality fuel

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