Preparation method for catalyst for hydrogen production by hydrocarbon reforming

A hydrocarbon conversion and catalyst technology, applied in the chemical industry, can solve the problem that the active metal is not a rod-shaped particle structure, and achieve the effects of high anti-coking ability, increased activity, and high activity

Active Publication Date: 2012-12-26
SHANDONG GONGQUAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lignocellulose is used as a pore expander, and lanthanum oxide is used as an active modifier, but the active metal is not a rod-shaped particle structure

Method used

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  • Preparation method for catalyst for hydrogen production by hydrocarbon reforming
  • Preparation method for catalyst for hydrogen production by hydrocarbon reforming
  • Preparation method for catalyst for hydrogen production by hydrocarbon reforming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take 320g of α-alumina, and then add 480g of pure calcium aluminate cement, 3.2g of ZrO 2, 4g kapok and 32g graphite to form a mixed material. Add 21g of deionized water, stir evenly, pre-press 4 times with a briquette machine, and the ball forming rate reaches 90%. Put it into a drying oven, dry at 120°C for 6 hours, pass through an 8-mesh sieve to granulate, and air-dry for 8 hours. Tablet molding is performed on a tablet press, with a specification of 16×15mm (four holes, inner hole Φ4.0mm). When the initial compressive strength is 30N / particle, steam curing is carried out for 36 hours, and the carrier is activated at 1150°C for 6 hours. Get the S1 vector.

[0041] A certain amount of La(NO 3 ) 2 , deionized water, prepared into a solution with a concentration of 0.4mol / l. Put the activated carrier into the step impregnation solution for equal volume impregnation. The catalyst was dried at 100°C for 10 hours. After drying, the catalyst was calcined at 900° C....

Embodiment 2

[0043] Take 380g of α-alumina, and then add 420g of pure calcium aluminate cement, 30g of ZrO 2 , 2g kapok and 25g graphite to form a mixed material. Add 270g of deionized water, stir evenly, pre-press 5 times with a briquette machine, and the ball forming rate reaches 80%. Put it into a drying oven, dry at 150°C for 6 hours, pass through an 8-mesh sieve to granulate, and air-dry for 10 hours. Tablet molding is performed on a tablet press, with a specification of 16×15mm (four holes, inner hole Φ4.0mm). When the initial compressive strength is 50N / particle, steam curing is carried out for 24 hours, and the carrier is activated at 1100°C for 8 hours. Get the S2 vector.

[0044] A certain amount of La(NO 3 ) 2 , deionized water, prepared into a solution with a concentration of 0.2mol / l. Put the activated carrier into the step impregnation solution for equal volume impregnation. The catalyst was dried at 130°C for 1 hour. After drying, the catalyst was calcined at 800° C....

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Abstract

The invention relates to a preparation method for a catalyst for hydrogen production by hydrocarbon reforming. The method is characterized by comprising the following steps of: adding La(NP3)2 into deionized water to prepare a solution; placing an alumina-based carrier into the impregnating solution obtained above for isopyknic impregnation; drying after the impregnation; roasting the catalyst obtained above for 2-6 hours, and cooling to room temperature; preparing a Ni(NO3)2 solution by using Ni(NO3)2, deionized water and a surfactant; placing the catalyst prepared above into the Ni(NO3)2 solution for isopyknic impregnation; drying the sample obtained above, and then roasting; placing the sample obtained above into the Ni(NO3)2 solution again for another isopyknic impregnation the, and then drying and roasting again to obtain a product. The prepared catalyst for hydrogen production by hydrocarbon reforming has stabilized high activity; and when using hydrocarbon gas containing a large amount of C2-C4 hydrocarbons as a raw material, catalytic cracking and steam reforming of the C2-C4 hydrocarbons can be realized quickly by the prepared catalyst, preventing the C2-C4 hydrocarbons from moving down to a high temperature bed for carbon deposition.

Description

technical field [0001] The invention relates to a preparation method of a hydrocarbon conversion hydrogen production catalyst, which belongs to the field of chemical industry. Background technique [0002] At present, hydrogen production by reforming fossil fuels is the mainstream of hydrogen production technology. For the hydrogen needed by petrochemical plants, the most feasible technology is mainly the hydrogen production technology using the light hydrocarbon conversion method. The natural gas hydrogen production method generally includes the pretreatment of raw materials to remove olefins and sulfur impurities in the raw materials in order to protect the activity of the catalyst and long-term operation. The pretreated feedstock enters the light hydrocarbon steam reforming reactor for light hydrocarbon steam reforming to generate H 2 , CO, CO 2 、CH 4 The light hydrocarbon steam reforming reactor is mainly composed of several externally heated tubular solid bed reacto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J35/10C01B3/26
Inventor 安春良刘永善
Owner SHANDONG GONGQUAN CHEM
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