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Coal liquefied oil boiling bed hydrogenation catalyst carrier and preparation method thereof

A catalyst carrier, coal liquefied oil technology, applied in refining to remove heteroatoms, etc., can solve the problems of increasing catalyst strength, short catalyst service life, harsh catalytic reaction conditions, etc., achieve thin and dense pore walls, improve mechanical Strength and wear resistance, the effect of improving the service life

Active Publication Date: 2007-12-12
神华煤制油研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydroprocessing of coal liquefied oil by the fixed bed process has the following problems: because the coal liquefied oil is heavy and contains many mechanical impurities, the catalytic reaction conditions will be relatively harsh; high-nitrogen raw materials will accelerate catalyst deactivation, and the service life of the catalyst is very long. short, the product properties cannot be guaranteed; the pressure drop of the catalyst bed is high; in order to meet the product index, the fixed bed reactor system needs to adopt a more complicated design, which will increase the investment cost
Due to the large pore structure of the catalyst and no method for increasing the strength of the catalyst, the strength and wear resistance of the catalyst still need to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of modified alumina G-1

[0033] Take the filter cake after washing the alumina precursor prepared by the carbonization method, measure its dry basis as 30wt%, take 1500 grams of the filter cake, add 2.5 liters of deionized water, make a slurry, heat up to 65 ° C, stir for 1 hour, add 90 gram of 85m% phosphoric acid solution, filtered to obtain a filter cake, added 2.0 liters of deionized water, beating, heated to 70 ° C, and added 86 grams of boric acid, and with a concentration of 10gNH 3 Adjust the pH value of the solution to 6 per 100ml of ammonia solution, stir for 1 hour, filter and dry at 110°C for 4 hours, the sample is G-1, and its physical and chemical properties are shown in Table 1.

Embodiment 2

[0035] Preparation of modified alumina G-2.

[0036] Take 800 grams of filter cake after washing the aluminum oxide precursor prepared by the aluminum sulfate method, the dry basis is 30wt%, add 3 liters of deionized water, stir evenly and heat up to 85 ° C, and add 53 grams of 85wt% phosphoric acid solution, filter to obtain Cake, add 2.5 liters of deionized water, make a slurry, raise the temperature to 70 ° C, and add 120 grams of boric acid, and use a concentration of 10 g NH 3 Adjust the pH of the solution to 6.5 per 100ml of ammonia solution, stir for 1 hour, continue stirring for 30 minutes, and dry at 110°C for 4 hours. The physical and chemical properties of sample G-2 are shown in Table 1.

[0037] Table 1 Physicochemical properties of samples

[0038] Example number

Embodiment 3

[0040] Preparation of the carrier C-1 of the fluidized bed hydrogenation catalyst of the present invention.

[0041] With 168 grams of G-1, 18 grams of alumina fiber (length 30 microns, diameter 6 microns, specific surface 183m 2 / g, pore volume 0.08ml / g), 19 grams of nano-silica (the sub-pure nano-silica produced by Tianjin Chemical Co., Ltd.), 193.5 grams are made of SB powder (pore volume 0.46ml / g, specific surface area 260m 2 / g), and the binder (30wt% on a dry basis, the acid-aluminum mol ratio is 0.3) prepared by the above-mentioned SB powder, put into a roller compactor, grind to an extrudable paste, extrude, and dry at 110°C for 4 hours , and calcined at 550°C for 3 hours to obtain catalyst carrier C-1. The physical and chemical properties of the catalyst support are shown in Table 2.

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Abstract

The invention discloses a catalyst carrier for coal liquification oil hydrogenation on boiling bed and the preparation method. Besides normal hydrogenation catalyst carrier component, the catalyst aslo contains aluminium oxide fiber, the content of which in carrier is 3- 10wt%. The mechanical strength and wearing resistance of catalyst are strong, which increases carrier stability and life length and reduces production cost. The active aluminium oxide utilization can increase the hydrogeneration activity and stability.

Description

technical field [0001] The invention relates to a fluidized bed hydrogenation catalyst carrier and a preparation method thereof, in particular to a fluidized bed coal liquefied oil hydrogenation catalyst carrier and a preparation method thereof. Background technique [0002] The process usually used for catalytic hydrogenation of coal liquefied oil is mainly fixed bed hydrogenation process. Fixed bed reactors are especially suitable for handling lighter and cleaner feeds, such as naphtha, middle distillates, gas oils and ordinary residues. The fixed bed reactor is characterized by smoother operation and easier control. However, the hydroprocessing of coal liquefied oil by the fixed bed process has the following problems: because the coal liquefied oil is heavy and contains many mechanical impurities, the catalytic reaction conditions will be relatively harsh; high-nitrogen raw materials will accelerate catalyst deactivation, and the service life of the catalyst is very long...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04
Inventor 朱豫飞
Owner 神华煤制油研究中心有限公司
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