Catalyst for coal tar hydrogenation modification and its preparation method and use

A hydrogenation modification and catalyst technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low activity and low utilization rate of coal tar, and achieve high cetane number, good Selectivity, the effect of slowing down carbon deposition

Inactive Publication Date: 2009-08-19
FUSHUN XINRUI CATALYST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a coal tar hydro-upgrading catalyst and its preparation method and application, to overcome the shortcomings of existing coal tar hydro-upgrading catalysts such as low activity and low utilization rate of coal tar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] ①Preparation of catalyst carrier

[0014] After mixing 200g of alumina and 20g of ZSM-5 molecular sieve evenly, add 6g of Tianqing powder, then add an appropriate amount of phosphoric acid and deionized water to knead, extrude into a clover shape of Φ1.6×(5~8)mm, and stand at room temperature Air-dried for 6 hours, then dried at 120° C. for 4 hours, and then calcined at 550° C. for 5 hours to obtain carrier A1.

[0015] ② Preparation of catalyst

[0016] Weigh 85.52g of ammonium metatungstate and 40g of nickel nitrate into 120ml of deionized water, stir, and after they are completely dissolved, add 6ml of phosphoric acid, then add deionized water to make up to 200ml to make a co-immersion solution.

[0017] Immerse 200g of carrier A1 in 200ml of the above solution, soak it at room temperature for 1 hour, let it stand at room temperature for 6 hours to air-dry, then dry it at 120°C for 2 hours, and finally bake it at 550°C for 2 hours to prepare Catalyst B1 was obtaine...

Embodiment 2

[0019] ①Preparation of catalyst carrier

[0020] After mixing 120g of alumina and 15g of ZSM-5 molecular sieve evenly, add 3g of Tianqing powder, then add an appropriate amount of phosphoric acid and deionized water to knead, extrude into a clover shape of Φ1.6×(5~8)mm, and stand at room temperature Air-dried for 6 hours, then dried at 120° C. for 4 hours, and then calcined at 550° C. for 5 hours to obtain carrier A2.

[0021] ② Preparation of catalyst

[0022] Weigh 40g of ammonium metatungstate and 19g of nickel nitrate into 50ml of deionized water, stir, and after they are completely dissolved, add 2.5ml of phosphoric acid, and then add deionized water to make the volume reach 100ml to make a co-immersion solution.

[0023] After 100g of carrier A2 was saturated spray impregnated with the above-mentioned co-impregnation solution, it was left to stand at room temperature for 6 hours to air-dry, then dried at 120°C for 2 hours, and finally calcined at 550°C for 2 hours to ob...

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Abstract

The invention discloses a catalyst for hydrogenation modification of coal tar and a preparation method thereof and the application thereof. The catalyst consists of a mixture of active components of WO3, NiO and P2O5 and a catalyst carrier, wherein the weight of WO3 is 27 to 30 percent of the total weight of the catalyst, the weight of NiO is 4 to 7 percent of the total weight of the catalyst, the weight of P2O5 is 2 to 3 percent of the total weight of the catalyst, and the balance being the catalyst carrier; the catalyst carrier consists of aluminum oxide and a ZSM-5 molecular sieve, of which the weight ratio is between 8-13:1; and the specific surface area of the catalyst is 210 to 230m/g, and the pore volume is 0.44 to 0.48ml/g. the catalyst has proper acid center, better water resistance and bigger specific surface, pore volume and pore size, and can reduce the carbon deposit and inactivation of the catalyst and the plugging of a bed. In the hydrogenation reaction, the proper acid center and active center can maximally make the arene saturated and ring opening under the condition of reducing the broken chain as far as possible, and the cetane number of the diesel oil component is increased, so that the catalyst possesses of good selectivity, stability and mechanical strength.

Description

1. Technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a coal tar hydrogenation upgrading catalyst and its preparation method and application. 2. Background technology [0002] With the continuous development of society, petroleum as a non-renewable resource is decreasing day by day, but with the development of the world economy, the demand for fuel oil products is increasing, and the quality requirements for oil products are increasing high. The shortage of petroleum resources is imminent, and it is an effective way to use coal as a backup or supplement of petroleum. The utilization of coal resources mainly includes the following types: direct combustion of coal, direct coal liquefaction, indirect coal liquefaction, and coal coking. Among them, coal coking provides coke for steelmaking enterprises, but it produces coal tar by-product. In the past, coal tar from coking enterprises flowed into the fuel oil market in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185B01J27/188B01J21/04B01J29/40C10G45/06C10G45/12
Inventor 罗继刚霍艳艳张笑剑罗继庆于艳
Owner FUSHUN XINRUI CATALYST
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