Slurry bed hydrogenation catalyst, and preparation, design method and use thereof

A hydrogenation catalyst and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, preparation of liquid hydrocarbon mixtures, etc., can solve high production costs, uneven reaction, and difficult recovery of catalysts to avoid environmental pollution and land waste, high conversion rate and liquid yield, and important effects of catalyst cost

Active Publication Date: 2015-09-16
CATECH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oil-soluble catalysts have better dispersibility, but are toxic and expensive, and are rarely used at present
The dispersion of water-soluble catalyst in residual oil is not good, and the reaction is not uniform enough
In addition, for heavy crude oil, low-quality heavy oil hydrogenation process, oil-coal mixing process and direct coal liquefaction process, due to the limitation of the process, there are many solid products, and the catalyst is difficult to recycle. discarded, and the existing catalysts have high precious metal content, so the production cost is very high
The unsatisfactory overall performance of the current catalysts limits its industrial application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The natural red mud was crushed and ground to 50 μm, and heated and dried at 130° C. to make the water content in the red mud 2.0 wt%. Add the dried red mud powder into the ammonium molybdate aqueous solution with a concentration of 10%, to ensure that the ratio of the effective active component iron to molybdenum is 1:150, stir evenly, and let stand for more than 1 hour to obtain The lower layer precipitated. The precipitation is combined with heat drying and vacuum drying to reduce the water content to 0.35 wt%, to obtain molybdenum-containing red mud powder, which is ground to 50 μm. Finally, add activated carbon with a pore size of 35-65 nm and a particle size of 50 μm to the molybdenum red mud powder and mix evenly. The weight ratio of activated carbon to red mud is 0.3:1 to obtain catalyst 1. Under the following basic process parameters of the pilot-scale slurry bed, catalyst 1 was used to carry out the residual oil slurry bed hydrogenation test on residual oil: ...

Embodiment 2

[0041]The natural red mud is crushed and ground to 40 μm, heated and dried at 130° C., so that the water content in the red mud is less than 2.5 wt%. Add the dried red mud powder into the ammonium molybdate aqueous solution with a concentration of 50%, to ensure that the ratio of the effective active component iron to molybdenum is 1:200, stir evenly, and let it stand for more than 1 hour to obtain The lower layer precipitated. The precipitation is combined with heat drying and vacuum drying to reduce the water content to 0.35wt% to obtain molybdenum-containing red mud powder, which is ground to 10 μm. Finally, activated carbon with a pore size of 35-65 nm and a particle size of 70 μm was added to the molybdenum red mud powder and mixed evenly. The weight ratio of activated carbon to red mud was 0.3:1 to obtain catalyst 2. Under the following basic process parameters of the pilot-scale slurry bed, catalyst 2 was used to carry out the residual oil slurry bed hydrogenation test...

Embodiment 3

[0043] The natural hematite powder is crushed and ground to 30 μm, heated and dried at 130° C., so that the water content in the hematite powder is less than 2.5 wt%. Add the dried hematite powder into the ammonium molybdate aqueous solution with a concentration of 40%, to ensure that the ratio of the effective active component iron to molybdenum is 1:180, stir evenly, and let it stand for more than 1 hour. A lower precipitate was obtained. The precipitation is combined with heat drying and vacuum drying to reduce the water content to 0.35 wt%, to obtain molybdenum-containing hematite powder, which is ground to 50 μm. Finally, activated carbon with a pore size of 65-90 nm and a particle size of 90 μm was added to the molybdenum-containing hematite powder and mixed evenly. The weight ratio of activated carbon to red mud was 0.3:1 to obtain catalyst 3. Under the following basic process parameters of the pilot-scale slurry bed, catalyst 3 was used to carry out residual oil slurr...

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Abstract

The invention discloses a slurry bed hydrogenation catalyst, and preparation, a design method and a use thereof; the catalyst includes the following components: a catalyst main body, molybdenum-containing red mud or hematite powder, a carrier and activated carbon; the molar ratio of a metal center Fe to the other metal center Mo in the red mud or hematite is 1:150 to 1:200, the mass ratio of the catalyst main body to activated carbon is 0.2:1 to 1.1:1, and the activated carbon has the pore size of 1-100 nm. The preparation method includes the following steps: firstly, preparing the molybdenum-containing red mud or hematite powder, then adding activated carbon with the particle size of 50-150 [mu]m into the molybdenum-containing red mud or hematite powder, mixing evenly, and thus obtaining the slurry bed hydrogenation catalyst. The slurry bed hydrogenation catalyst has the advantages of low cost, simple preparation method, and easy storage and transportation, can be discarded and has no need of recycling, is applied to heavy oil slurry bed hydrogenation, coal direct liquefaction and oil coal mixing, and achieves quite high residual oil/oil coal conversion rate and liquid yield.

Description

technical field [0001] The invention relates to a catalyst, in particular to a slurry bed hydrogenation catalyst and its preparation method and application, and belongs to the field of heavy oil, residual oil and coal hydrogenation catalysis. Background technique [0002] With the increase of the amount of heavy crude oil processed by Chinese refineries, the conversion of heavy oil to light has become a major technical problem for modern refineries. At present, heavy oil processing technology mainly includes delayed coking, heavy oil catalytic cracking and residual oil hydrogenation. Among them, the quality of the liquid product of the delayed coking unit is poor, and the coke yield is high. Heavy oil catalytic cracking has high requirements on raw materials and cannot handle low-quality residual oil. Hydrogenation of residual oil can deal with low-quality residual oil with high sulfur, high carbon residue and high metal content, and at the same time improve the liquid yie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/881C10G1/08C10G49/04
Inventor 李苏安邓清宇王坤朋
Owner CATECH TECH
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