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Bimetal or multi-metal high-dispersion composite coal tar hydrogenation catalyst and preparation method thereof

A hydrogenation catalyst and multi-metal technology, which is applied in the field of bimetallic or multi-metal highly dispersed composite coal tar hydrogenation catalyst and its preparation, can solve the problems of low catalyst hydrogenation activity, affecting product yield and quality, etc., to reduce Preparation cost, improvement of utilization rate, effect of high dispersibility

Active Publication Date: 2012-03-21
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since iron is a component with relatively low hydrogenation activity, the hydrogenation activity of the catalyst is relatively low. For heterocyclic compounds such as sulfur, nitrogen, and oxygen, and coal tar with high content of polycyclic aromatic hydrocarbons, colloids, and asphaltenes Raw materials, in the process of catalytic hydrocracking, hydrocracking cannot be performed more effectively, which affects product yield and quality

Method used

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  • Bimetal or multi-metal high-dispersion composite coal tar hydrogenation catalyst and preparation method thereof
  • Bimetal or multi-metal high-dispersion composite coal tar hydrogenation catalyst and preparation method thereof
  • Bimetal or multi-metal high-dispersion composite coal tar hydrogenation catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1: Catalyst preparation

[0021] In this example, a kind of Chinese bituminous coal was used as the carrier coal for preparing the catalyst, and FeSO heptahydrate was taken 4 6.00 kg, add 47.00 kg of fresh water to dissolve, then add 15.00 kg of bituminous coal powder with a particle diameter of 100μm, stir evenly to prepare FeSO 4 Coal slurry, another 1.30 kg of concentrated ammonia water is added to 17.5 kg of fresh water to prepare an ammonia solution, and the above ammonia solution is added to the above FeSO under stirring 4 In the coal slurry, continue to stir for 10 minutes after the addition, the PH value at the end of the reaction is 7.7, the reaction product Fe(OH) 2 Loaded on coal powder. Put the above reaction product at 40℃, 3m 3 / h Air flow oxidation for 100 minutes. After the oxidation reaction is completed, Fe(OH) 2 It is oxidized to γ-FeOOH and subjected to centrifugal filtration to obtain a filter cake. Then, take 0.082 kg of 10% by mass ammonium m...

Embodiment 2

[0022] Example 2: Catalyst preparation

[0023] The preparation process of Example 2 is the same as that of Example 1, except that the 10% by mass ammonium molybdate aqueous solution in Example 1 is a nickel carbonate ammonia aqueous solution containing 10% by mass nickel carbonate, and the spray amount is approximately equal to the mass ratio of nickel: iron 1:400. The powdered catalyst with a water content of less than 4% (mass) obtained by drying is the catalyst of the present invention. The Fe content of the catalyst is 7.2% (mass), the dry coal content is 90.0% (mass), and the nickel content is 0.02% (mass).

Embodiment 3

[0024] Example 3: Example 3 has the same preparation process as Example 1, except that the 10% by mass aqueous solution of ammonium molybdate in Example 1 is a 10% by mass aqueous solution of cobalt nitrate, and the spray amount is approximately equal to the mass ratio of cobalt to iron 1:400. The powdered catalyst with a water content of less than 4% (mass) obtained by drying is the catalyst of the present invention. The Fe content of the catalyst is 7.3% (mass), the dry coal content is 89.0% (mass), and the cobalt content is 0.02% (mass).

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Abstract

The invention relates to a bimetal or multi-metal high-dispersion composite coal tar hydrogenation catalyst and a preparation method thereof. The catalyst comprises molecular high-activity components of one or a plurality of mixtures of water-solubility salt compounds of metal from molybdenum, nickel, tungsten or cobalt, nanometer low-activity components gamma-FeOOH grains and micro or sub nanometer carrier pulverized coal, the activity components are uniformly and highly dispersed on the surfaces of the carrier pulverized coal, the catalyst is micro or sub nanometer fine powder and is high in activity, particles of the activity components are small and are highly uniformly dispersed on the surface of a carrier, the utilization quantity of the catalyst is low, cost is reduced, and the bimetal or multi-metal high-dispersion composite coal tar hydrogenation catalyst can be widely applied to coal tar hydrogenation or coal liquefaction.

Description

Technical field [0001] The present invention relates to the field of hydrogenation catalysts, and in particular to a bimetal or polymetal high dispersion that uses coal tar as a raw material and adopts a suspended bed, slurry bed, or bubbling bed hydrogenation process to produce motor fuel and / or chemical raw materials Composite coal tar hydrogenation catalyst and preparation method thereof. The catalyst is also suitable for direct hydroliquefaction of coal. Background technique [0002] Coal tar contains a large amount of sulfur, nitrogen, oxygen and other heterocyclic compounds, polycyclic aromatic hydrocarbons, gums, and asphaltenes. Its cracking performance is poor, and it is easy to polycondensate under high temperature hydrogenation conditions to form macromolecular coke, which makes conventional hydrogenation catalysts. The active components of the reaction system are deactivated and the reaction system is coked. Therefore, the use of conventional hydrogenation technology...

Claims

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Application Information

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IPC IPC(8): B01J23/881B01J27/232B01J27/25C10G67/00C10G1/08
Inventor 李文博张晓静史士东王勇朱晓苏艾军毛学锋杜淑凤吴艳朱肖曼谷小会赵鹏胡发亭石智杰张帆李培霖王伟颜丙峰赵渊黄澎
Owner CCTEG CHINA COAL RES INST
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