High performance hydrocracking catalyst and process for preparing same

A hydrocracking and catalyst technology, which can be used in hydrocarbon oil cracking, petroleum industry and other directions, and can solve the problems of no hydrocracking activity and weak acidity.

Inactive Publication Date: 2005-09-14
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, mesoporous molecular sieves are weak i...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] This example is a preparation method of a Ni-Mo hydrocracking catalyst supported by a composite carrier.

[0023] The preparation of the composite carrier adopts a mechanical mixing method. 1 g of hydrogen type Y zeolite and 3 g of MCM-41 mesoporous molecular sieve were placed in a mortar and ground for 30 minutes to prepare a uniformly mixed composite carrier.

[0024] The catalyst active component is supported by the co-impregnation method. Weigh 1.19 grams of ammonium heptamolybdate ((NH 4 ) 6 Mo 7 O 24 4H 2 O) and 1.26 grams of nickel nitrate (Ni(NO 3 ) 2 6H 2 O) Dissolve in 50 ml of deionized water to make an immersion solution. Weigh 3 grams of the composite carrier, add it to the prepared dipping solution, and immerse it at room temperature for 1 hour. The water was quickly evaporated, dried at 120°C for 12 hours, and then calcined in the air at 450°C for 5 hours to obtain a Ni-Mo catalyst precursor supported by a composite carrier. MoO 3 The loading amount is 20% (m...

example 2

[0026] This example is the evaluation method and result of the hydrodesulfurization and hydrocracking activity of the catalyst of the present invention.

[0027] The hydrodesulfurization reaction is carried out on a stainless steel high-pressure fixed bed device. The raw material is a decalin solution containing 0.8 wt% of dibenzothiophene. Evaluation conditions: reaction temperature is 300℃; total pressure is 5MPa; H 2 / The ratio of material to liquid is 1600Nm 3 / m 3 ; Liquid space velocity is 27h -1 . The raw materials and products were analyzed by Agilent 6890 gas chromatography, the hydrodesulfurization activity was expressed by the conversion of dibenzothiophene, and the hydrocracking activity was described by the total selectivity of benzene and cyclohexane.

[0028] The conversion rate of dibenzothiophene under the reaction conditions is greater than 99%, indicating that the catalyst has high low-temperature hydrodesulfurization reaction activity. The total selectivity of ...

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PUM

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Abstract

This invention is one kind of high capability hydrogenation cracking catalyst and its preparing method, it belongs to new material, oil refining, petrochemical industry and energy technique field. Metal active component is carried by complex carrier, the catalyst prepared not only has high hydrocracking activity, but also high hydrodesulfurization activity, it can be use to deeply remove sulfur and nitrogen and other mixed atoms when in ifp basf hydrocracking process of lightening heavy oil fraction. Complex carrier is generated by interpose hole molecular sieve and zeolite molecular sieve. The central hole of complex carrier is propitious to highly disperse of active metal and reduce inside diffusional resistance of reactant molecule, and hydrogenation center and cracking center can be provided by acidity of zeolite molecular sieve. The beneficial effect of this invention is that dibenzanthracene thiophene and its derivant can fully transformed, cracked product in products can almost more than 80%. It is mainly used in lightening of heavy oil fraction in oil and coal liquid processing, sulfur, nitrogen and other mixed atoms can be removed at the same time.

Description

Technical field [0001] The invention belongs to the technical fields of new materials, petroleum refining, petrochemicals and energy. Background technique [0002] Hydrocracking is one of the deep processing processes of petroleum and coal liquids. Under the action of a catalyst, heavy distillate oil is cracked into light distillate oil in a hydrogen atmosphere. The hydrogenation process is usually carried out at a higher temperature, and the energy consumption is generally high, and the process needs to consume a large amount of expensive hydrogen. Therefore, it is objectively required that the hydrocracking process can be combined with the hydrorefining process with similar reaction conditions to make the heavy oil lighter while removing sulfur, nitrogen and other heteroatoms in order to produce clean fuels and high-quality chemicals. raw material [0003] The traditional hydrocracking catalyst is a dual-functional catalyst made of a composite carrier containing Y zeolite and a...

Claims

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Application Information

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IPC IPC(8): C10G47/20
Inventor 王安杰任靖李翔
Owner DALIAN UNIV OF TECH
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