Preparation of catalyst catalyzing diesel hydro-conversion, and hydrogenation process

A technology for catalyzing diesel oil and hydroconversion, applied in hydrotreating process, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of lowering product octane number, increasing gasoline product hydrogenation saturation, poor catalyst stability, etc. Achieve the effect of inhibiting excessive cracking, increasing hydrogen saturation, and improving stability

Active Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the processing raw material of this technology is low-quality catalytic diesel oil, and in order to reduce the excessive loss of octane number of gasoline products caused by hydrogenation saturation reaction, the reaction pressure is usually lower than that of traditional hydrocracking units, resulting in poor catalyst stability.
In order to reduce the carbon deposition reaction of the catalyst and improve the stability of the catalyst, an effective method is to increase the hydrogenation activity of the catalyst, that is, to increase the content of active metals on the catalyst, but this increases the hydrogenation saturation of gasoline products and reduces the octane number of the product

Method used

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  • Preparation of catalyst catalyzing diesel hydro-conversion, and hydrogenation process
  • Preparation of catalyst catalyzing diesel hydro-conversion, and hydrogenation process
  • Preparation of catalyst catalyzing diesel hydro-conversion, and hydrogenation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Configure the W-Ni impregnation solution, first add ammonium metatungstate and nickel nitrate to distilled water to prepare a mixed solution of ammonium metatungstate and nickel nitrate, and adjust the tungsten oxide content in the mixed solution to 40g / 100ml, nickel oxide 12g / 100ml. Then in the mixed solution, dropwise adding a concentration of 25% ammonia solution to pH is 5.0;

[0040] (2) The W-Ni impregnating solution obtained in step (1) was impregnated with Y molecular sieve for 2 hours according to the liquid / solid mass ratio of 3:1, and then, after filtration, roasted at 120°C for 4 hours;

[0041] (3) Mix 100g of Y molecular sieve obtained in step (2) with 100g of macroporous alumina, add 4g / 100ml of dilute nitric acid, mix and roll in a mixer until it can be extruded, and extrude on an extruder to obtain the example 1 Catalyst C1.

Embodiment 2

[0043] (1) Configure the W-Ni impregnation solution, first add ammonium metatungstate and nickel nitrate to distilled water to prepare a mixed solution of ammonium metatungstate and nickel nitrate, and adjust the tungsten oxide content in the mixed solution to 30g / 100ml, nickel oxide 10g / 100ml. Then in the mixed solution, dropwise adding concentration is 2% potassium hydroxide solution to PH to be 5.5;

[0044] (2) The W-Ni impregnating solution obtained in step (1) was impregnated with Y molecular sieve for 2 hours according to the liquid / solid mass ratio of 3:1, and then, after filtration, roasted at 120°C for 4 hours;

[0045] (3) Mix 100g of Y molecular sieve obtained in step (2) and 50g of macroporous alumina, add 4g / 100ml of dilute nitric acid, mix and roll in a mixer until it can be extruded, and extrude on an extruder to obtain the example 2 Catalyst C2.

Embodiment 3

[0047] (1) To configure the Mo-Ni impregnation solution, first add molybdenum oxide and alkali nickel carbonate to distilled water to prepare a mixed solution. The mixed solution contains 20g / 100ml of molybdenum oxide and 7g / 100ml of nickel oxide based on the oxide of the metal salt. . Then in the mixed solution, dropwise adding a concentration of 2% potassium hydroxide solution to a pH of 6.0;

[0048] (2) The Mo-Ni impregnating solution obtained in step (1) was impregnated with Y molecular sieve for 2 hours according to the liquid / solid mass ratio of 3:1, and then, after filtration, roasted at 120°C for 4 hours;

[0049] (3) Mix 100g of Y molecular sieve obtained in step (2), 100g of silicon aluminum, 10g of nickel nitrate and 5g of molybdenum oxide, add 4g / 100ml of dilute nitric acid, mix and roll in a mixer until it can be extruded, and put it on the extruder The catalyst C3 of Example 3 was obtained by extruding.

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Abstract

The invention discloses a preparation method of a catalyst catalyzing diesel hydro-conversion, and a hydrogenation process. The method comprises the following steps: (1) an impregnation liquid containing active metal is used for impregnating Y molecular sieve; (2) the Y molecular sieve obtained in the step (1) and amorphous aluminosilicate and/or aluminum oxide are well mixed; dilute nitric acid is added, such that a slurry is formed; extrusion molding is carried out, and drying and roasting are carried out, such that the catalyst catalyzing diesel hydro-conversion is obtained. With the method provided by the invention, active metal effective utilization rate is improved, catalyst overall hydrogenation capacity is controlled, and catalyst hydrogenation reaction selectivity and stability are improved. The invention also provides a hydrogenation process matching the hydro-conversion catalyst. With the hydrogenation process, gasoline further hydrogenation or cracking reaction is reduced to a certain extent, gasoline octane number can be improved, and hydro-cracking liquid product yield can be improved.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation treatment, and in particular relates to a preparation method of a catalytic diesel hydrogenation conversion catalyst and a matching hydrogenation process. Background technique [0002] Since the beginning of the new century, with the increasing awareness of environmental protection, the stricter national environmental protection regulations and the rapid development of the national economy, the demand for clean motor fuels has been increasing all over the world. Catalytic cracking (FCC) technology is one of the main technological means for lightening heavy oil, and it occupies a relatively important position in oil refining enterprises all over the world. The annual processing capacity of catalytic cracking units in my country has exceeded 100 million tons, second only to the United States. In the composition of gasoline and diesel products, catalytic cracking gasoline accounts for about 80...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/16C10G47/20C10G67/02
Inventor 柳伟杜艳泽秦波张晓萍曹均丰王凤来刘昶
Owner CHINA PETROLEUM & CHEM CORP
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