Hydrocracking method for producing chemical raw material

A technology for hydrocracking and chemical raw materials, which is applied in the fields of hydrocarbon oil cracking and petroleum industry. It can solve the problems of difficult effective treatment, uneconomical rationality, and large hydrogen consumption, and achieves the increase of aromatics latent content and aromatics latent content. Effects of high and low BMCI values

Active Publication Date: 2007-05-02
CHINA PETROLEUM & CHEM CORP +2
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  • Abstract
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Problems solved by technology

It is generally difficult to effectively treat this kind of inferior catalytic cracked diesel oil by the above-mentioned hydro

Method used

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  • Hydrocracking method for producing chemical raw material

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preparation example Construction

[0034] The second preparation method of the hydrocracking catalyst recommended by the present invention is as follows: the Y-type molecular sieve precursor is mixed with the binder obtained by the peptization of small-pore alumina and dilute nitric acid solution, extruded, and formed, wherein the mixing process Selectively add macroporous alumina and / or amorphous silica-alumina; treat the above molded product at high temperature with water vapor or ammonia-water vapor, the treatment conditions are as follows: temperature 400-700°C, preferably 500-600°C, pressure 0-600°C 0.2MPa, where the partial pressure of ammonia is 0-0.05MPa, and the treatment time is 0.5-3.0 hours to obtain a carrier; the catalyst carrier is impregnated with a solution containing active metal, dried and roasted to prepare the hydrocracking catalyst of the present invention. Wherein, after the mixture containing the Y-type molecular sieve precursor is treated with water vapor or ammonia gas-high temperature,...

preparation Embodiment 1

[0041] The present embodiment prepares hydrocracking catalyst I, and concrete steps are as follows:

[0042] (1) The Y-type molecular sieve precursor A1 is subjected to hydrothermal treatment, wherein the hydrothermal treatment conditions are as follows: the temperature is 600° C., the water pressure is 0.1 MPa, and the treatment time is 1 hour to obtain the Y-type molecular sieve I;

[0043] (2) get the Y type molecular sieve I of 153.5 gram step (1) gained, by 120 gram small hole alumina (pore volume 0.47ml / g, specific surface area is 280m 2 / g), 0.2N dilute nitric acid solution 440ml peptized binder mixes, after extruding, molding, then through 110 ℃ of drying 5 hours, 600 ℃ of roasting 6 hours obtain catalyst carrier;

[0044](3) impregnating the catalyst carrier obtained in step (2) with an aqueous solution containing molybdenum and nickel, drying at 110° C. for 5 hours, and calcining at 500° C. for 5 hours to prepare the hydrocracking catalyst I of the present invention....

preparation Embodiment 2

[0046] This embodiment prepares hydrocracking catalyst II, and concrete steps are as follows:

[0047] (1) 170g Y-type molecular sieve precursor A1 is mixed with the adhesive (same as implementation 2) prepared by peptizing 80g of small-pore alumina and dilute nitric acid solution, extruded and formed;

[0048] (2) Use ammonia-water vapor to treat the molded product obtained in step (1) at high temperature, the treatment conditions are as follows: temperature 550°C, pressure 0.1MPa, ammonia partial pressure 0.01MPa, treatment time 1 hour, obtained Carrier, which contains Y-type molecular sieve II;

[0049] (3) impregnating the catalyst carrier obtained in step (2) with an aqueous solution containing tungsten and nickel, drying at 110° C. for 5 hours, and calcining at 500° C. for 5 hours to prepare the hydrocracking catalyst II of the present invention.

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Abstract

This invention relates to a hydrocracking preparation of chemical materials production. Poor quality catalytic cracking Diesel and heavy hydrocracking material is mixed according to a proportion, and then hydrogenation and hydrocracking are conducted. The yield of heavy naphtha reaches 40wt% by controlling operating conditions, making sure the yield of tail oil 20wt%. The quality features of this poor quality catalytic cracking Diesel are high density, high content of aromatic hydrocarbon and low value of hexadecane. The density of the poor quality catalytic cracking diesel oil is above 0.95g/ml, and the aromatic hydrocarbon is over 90wt% and the value of hexadecane is under 20. Comparing with present technology, this invention combines poor quality catalytic cracking diesel and VGO organicly. High quality chemical material is effectively transformed with obtaining low BMCI value of tail oil, which is high quality material for ethylene preparation by steam cracking.

Description

technical field [0001] The invention relates to a hydrocracking method, in particular to a hydrocracking method capable of effectively treating inferior catalytic cracking diesel oil and converting it into chemical raw materials. Background technique [0002] As crude oil becomes heavier and inferior, and the market demand for heavy oil decreases and the demand for light oil increases, the degree of deep conversion of heavy residual oil continues to increase. Among them, catalytic cracking is one of the important means of lightening heavy residue oil. However, the properties of the products obtained by catalytic cracking are generally poor, and generally require further treatment to obtain qualified products. The diesel fraction obtained from catalytic cracking generally has the characteristics of high aromatics content, low cetane number, high sulfur and nitrogen content, and it is difficult to directly use it as a product, and it is difficult to effectively improve its pr...

Claims

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Application Information

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IPC IPC(8): C10G47/00
Inventor 关明华戴宝华石友良胡江青刘涛屠伟龙白振民孙洪江
Owner CHINA PETROLEUM & CHEM CORP
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