Coke oven gas hydrodesulfurization catalyst and preparation method thereof

A technology for hydrodesulfurization and coke oven gas, which is applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Disproportionation carbon deposition and other problems, to achieve the effect of improving anti-carbon deposition ability, strong anti-carbon deposition ability, and improving activity

Inactive Publication Date: 2017-01-04
XIAN SUNWARD AEROSPACE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used for coke oven gas desulfurization, it is easy to cause CO disproportionation and carbon deposition, which affects the service life of the catalyst. In actual production, the catalyst needs to be replaced frequently, thereby increasing production costs.

Method used

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  • Coke oven gas hydrodesulfurization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 26.9g Fe(NO 3 ) 3 9H 2 O, 1.0 g KNO 3 Dissolve in 82.5g of water, add 28.8g of oxalic acid, add 18.0g of ammonium heptamolybdate under stirring conditions, put it in a constant temperature water bath at 70°C after dissolving, add 150g of alumina carrier, soak for 2h, and then place the product at 120°C Bake at the bottom for 10 hours, and then bake at 350°C for 2 hours to obtain the finished catalyst. The content of each component is: Fe 2 o 3 3.1%, MoO 3 8.6%, Al 2 o 3 88.2%, K 2 O 0.1%.

Embodiment 2

[0033] Weigh 8.7g Fe(NO 3 ) 3 9H 2 O, 5.0g NaNO 3 Dissolve in 82.5g of water, add 13.8g of oxalic acid, add 22.0g of ammonium heptamolybdate under stirring conditions, dissolve it in a constant temperature water bath at 30°C, add 150g of alumina carrier, soak for 2h, and then place the product at 120°C Baked for 10 hours, then calcined for 1 hour at 450°C to obtain the finished catalyst. The content of each component is: Fe 2 o 3 1.0%, MoO 3 10.4%, Al 2 o 3 87.5%, Na 2 O 1.1%.

Embodiment 3

[0035] Dissolve 10.0g of tetramethoxysilane in a mixed solution of 40mL of water and 50mL of ethanol, add 150g of alumina carrier and impregnate at 30°C for 30min, then bake at 150°C for 1h, and roast at 400°C for 1h to obtain SiO 2 Modified alumina carrier 153.9g.

[0036] Weigh 28.0g Fe(NO 3 ) 3 9H 2 O, 4.0 g KNO 3 Dissolve in 82.5g of water, add 30.0g of oxalic acid, add 18.0g of ammonium heptamolybdate under stirring conditions, put it into a constant temperature water bath at 50°C after dissolving, add the aforementioned SiO 2 153.9 g of the modified alumina carrier was impregnated for 4 hours, and then the product was baked at 150°C for 1 hour and calcined at 450°C for 1 hour to obtain the finished catalyst. The content of each component is: Fe 2 o 3 3.2%, MoO 3 8.3%, Al 2 o 3 85.2%, K 2 O 1.1%, SiO 2 2.2%.

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Abstract

The invention discloses a coke oven gas hydrodesulfurization catalyst and a preparation method thereof. The catalyst comprises, by weight percentage, 1-6% of Fe2O3, 5-15% of MoO3, 73-92% of Al2O3, 0.1-4% of auxiliary I and 0-8% of auxiliary II. The catalyst has the advantages that the catalyst is prepared by an impregnation method, the added auxiliary I can increase the activity of the catalyst and is helpful to the carbon elimination reaction process during the reaction, the anti-carbon ability of the catalyst is increased, and the service life of the catalyst is prolonged; the added auxiliary II can increase the dispersity of Mo on the surface of a carrier so as to increase the activity of the catalyst; a co-impregnation method using Fe, Mo and the auxiliary I is used in the preparation process, and even loading of various components is guaranteed; the catalyst is high in activity, high in anti-carbon ability and the like, and the preparation method is simple and capable of easily achieving industrial production.

Description

technical field [0001] The invention belongs to the technical field of hydrodesulfurization of coke oven gas and catalysts, and in particular relates to a catalyst for hydrodesulfurization of coke oven gas and a preparation method thereof. Background technique [0002] my country is the world's largest producer of coke. According to data, my country currently has an annual output of more than 400 million tons of coke. For every ton of coke smelted, 400m 3 Left and right coke oven gas. The recovery and utilization of coke oven gas can significantly improve the economic benefits of enterprises, and is of great significance to environmental protection and effective utilization of resources. Coke oven gas contains a lot of sulfur compounds, which can not only cause equipment corrosion and endanger production safety in the production process, but also cause poisoning and deactivation of downstream catalysts. Therefore, the sulfur components in coke oven gas must be removed. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/887
CPCB01J23/002B01J23/8872B01J37/0201B01J2523/00B01J2523/13B01J2523/31B01J2523/41B01J2523/68B01J2523/842B01J2523/47B01J2523/48B01J2523/15B01J2523/14B01J2523/12
Inventor 许龙龙尚克家冯毅敏于阳王国妮卫冰贺强
Owner XIAN SUNWARD AEROSPACE MATERIAL CO LTD
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