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High activity catalyst used for hydrocracking and upgrading reactions of PRO residual oil and preparation method thereof

A high-activity catalyst and hydrocracking technology, which is applied in the direction of physical/chemical process catalysts, hydrocarbon cracking to hydrocarbons, molecular sieve catalysts, etc., can solve the problems of lack of cracking activity, achieve high selectivity, good controllability, and preparation simple effect

Inactive Publication Date: 2013-02-06
BAOWU CHARCOAL MATERIAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this catalyst has good hydrogenation activity but no cracking activity

Method used

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  • High activity catalyst used for hydrocracking and upgrading reactions of PRO residual oil and preparation method thereof
  • High activity catalyst used for hydrocracking and upgrading reactions of PRO residual oil and preparation method thereof
  • High activity catalyst used for hydrocracking and upgrading reactions of PRO residual oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Weigh the Y-type zeolite molecular sieve of dry weight 36g and the pseudoboehmite of dry weight 9g, and mix in 2.5g Tianqing powder and 2.5g alumina respectively, after stirring evenly, utilize mass fraction to be 3% Knead dilute nitric acid into dough;

[0034] (2) After being extruded and dried at normal temperature, it is crushed into particles with a length of 2-3mm and a diameter of 1mm, dried at 120°C for 2 hours under the protection of nitrogen, and then roasted at 550°C for 4 hours to prepare Obtain the Y-type zeolite molecular sieve carrier, that is, the catalyst carrier;

[0035] (3) Weigh 6.8g of nickel nitrate hexahydrate and dissolve it in 8ml of deionized water; weigh 10g of Y-type zeolite molecular sieve carrier, place it in the nickel nitrate solution, put it into a constant temperature oscillating water tank, and place it in a oscillating water bath at 90°C for 24 hours;

[0036] (4) After taking out the loaded catalyst and drying it in the air, dr...

Embodiment 2

[0039] (1), (2) are with embodiment 1;

[0040] (3) Weigh 4.4g of cobalt nitrate hexahydrate, dissolve it in 9ml of deionized water, weigh 10g of Y-type zeolite molecular sieve carrier, place it in nickel nitrate solution, put it into a constant temperature oscillating water tank, and place it in a oscillating water bath at 90°C for 24 hours;

[0041] (4) After taking out the loaded catalyst and drying it in the air, dry it at 120° C. for 2 hours under the protection of nitrogen;

[0042] (5) Finally put it into a muffle furnace and bake at 550° C. for 4 hours to obtain a highly active catalyst B for hydrocracking of PRO residual oil.

Embodiment 3

[0044] (1) Take by weighing the USY type zeolite molecular sieve of dry weight 36g and the pseudoboehmite of dry weight 9g, and mix respectively 2.5g Tian Qing powder and 2.5g alumina, after stirring evenly, utilize mass fraction to be 3% Knead dilute nitric acid into dough;

[0045] (2) After being extruded and dried at normal temperature, it is crushed into particles with a length of 2-3mm and a diameter of 1mm, dried at 120°C for 2 hours under the protection of nitrogen, and then roasted at 550°C for 4 hours to prepare Obtain the USY type zeolite molecular sieve carrier, that is, the catalyst carrier;

[0046] (3) Weigh 6.8g of nickel nitrate hexahydrate, dissolve it in 7.5ml of deionized water, weigh 10g of USY type zeolite molecular sieve carrier, place it in the nickel nitrate solution, put it into a constant temperature oscillating water tank, and place it in a oscillating water bath at 90°C for 24 hours;

[0047] (4) After taking out the loaded catalyst and drying it...

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Abstract

The present invention relates to a high activity catalyst used for hydrocracking and upgrading reactions of PRO residual oil. The preparation method of the catalyst comprises: based on a zeolitic molecular sieve as the main body, mixing additives such as pseudo-boehmite, sesbania powder and alumina, etc., rolling the above materials into balls by using dilute nitric acid, after extrusion molding and drying, and crushing, drying and calcining to obtain carriers; and then supporting one of the active metal components Ni or Co in oxide form by using an incipient impregnation method. The preparation method for the catalyst is simple; the obtained catalyst has relatively high catalytic activity and relatively high selectivity for benzene series compounds, and can be used for processes producing high added-value products by PRO residual oil via hydrocracking and upgrading; and thereby the effective upgrading of the PRO residual oil is achieved, while the problems of large impact to the environment, low economic value, narrow application prospects in existing PRO residual oil utilization methods are solved.

Description

technical field [0001] The invention relates to a high-activity catalyst, and more specifically refers to a high-activity catalyst and a preparation method for PRO residual oil hydrocracking and lightening reaction. Background technique [0002] About 10.7 million tons of coal tar resources are produced in my country every year. AATO (anthracene oil) is an important fraction of coal tar distillation, and PRO residual oil is the residue of AATO after solvent crystallization and vacuum distillation to extract refined anthracene and refined carbazole. Since PRO residual oil is a mixture with very complex composition and structure, the main component is highly condensed ring aromatic hydrocarbons with large molecular weight and high aromaticity, which is easy to cause environmental pollution. At present, the utilization of PRO residual oil in my country is mainly used as aviation fuel oil after hydrogenation and saturation, or mixed with coal tar pitch to adjust the softening po...

Claims

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Application Information

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IPC IPC(8): B01J29/14C07C15/02C07C4/06
Inventor 侯文杰余兆祥夏剑忠朱志荣朱春燕陈亮吴倩
Owner BAOWU CHARCOAL MATERIAL TECH CO LTD
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