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Intermediate temperate carbonyl sulfur hydrolyst and method of preparing the same and use thereof

A hydrolysis catalyst, carbonyl sulfide technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., to achieve considerable economic and social benefits, and overcome the effects of easy sulfation poisoning

Inactive Publication Date: 2009-06-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a medium-temperature carbonyl sulfide hydrolysis catalyst and its preparation method and use, in order to solve the existing and unsolvable problems in the above-mentioned prior art.

Method used

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  • Intermediate temperate carbonyl sulfur hydrolyst and method of preparing the same and use thereof
  • Intermediate temperate carbonyl sulfur hydrolyst and method of preparing the same and use thereof
  • Intermediate temperate carbonyl sulfur hydrolyst and method of preparing the same and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0024] Take by weighing five parts of pseudo-boehmite that are respectively 113.8g, 110.6g, 107.5g, 104.4g, 101.2g in weight, add 10g of vanadium pentoxide and mix evenly in five parts of pseudo-boehmite, then Add 0g, 3.8g, 7.5g, 11.3g, and 15g of potassium carbonate to five parts of pseudoboehmite and vanadium pentoxide mixture, and finally add 4g of carboxymethyl cellulose, 6g of ammonium bicarbonate, 3g of A pore-forming agent composed of three components of polyvinyl alcohol, all raw materials are mixed evenly, add deionized water, and after kneading, the strips are often warm-extruded to obtain particles with a size of φ3mm×5mm, and dried at 100°C for 4 hours. Calcined at 550°C for 4 hours to obtain K 2 Five medium-temperature carbonyl sulfide hydrolysis catalysts with O contents of 0%, 2.5%, 5%, 7.5% and 10%, respectively. Catalyst at a temperature of 300°C and a space velocity of 10000h -1 , Import COS concentration 200~500mgS / m 3 Carry out carbonyl sulfide hydrolysi...

Embodiment approach 2

[0028] Take by weighing five parts of pseudo-boehmite that are respectively 113.8g, 107.5g, 101.2g, 94.9g, 88.6g in weight, add 15g of potassium carbonate in five parts of pseudo-boehmite and mix evenly, then in five parts of pseudo-boehmite Add 0g, 5g, 10g, 15g, and 20g of vanadium pentoxide to the mixture of pseudoboehmite and potassium carbonate in sequence, and finally add 4g of carboxymethyl cellulose, 6g of ammonium bicarbonate, and 3g of polyvinyl alcohol three A pore-forming agent composed of three components, all the raw materials are mixed evenly, add deionized water, and after kneading, the strips are often warm-extruded to obtain particles with a size of φ3mm×5mm, dried at 100°C for 4 hours, and roasted at 550°C Get V in 4 hours 2 o 5 Five medium-temperature carbonyl sulfide hydrolysis catalysts with content of 0%, 5%, 10%, 15% and 20% respectively. Catalyst at a temperature of 300°C and a space velocity of 10000h -1 , Import COS concentration 200~500mgS / m 3 Ca...

Embodiment approach 3

[0032] Take by weighing 101.2g of pseudo-boehmite, add 15g of potassium carbonate to the pseudo-boehmite and mix evenly, then add 10g of vanadium pentoxide to the mixture of pseudo-boehmite and potassium carbonate, and finally add 4g Carboxymethyl cellulose, 6g of ammonium bicarbonate, and 3g of polyvinyl alcohol are three components of a pore-forming agent. All raw materials are mixed evenly, and deionized water is added. The particles of ×5mm were dried at 100°C for 4 hours and calcined at 550°C for 4 hours to obtain a medium-temperature carbonyl sulfide hydrolysis catalyst. The catalyst is at a space velocity of 10000h -1 , COS concentration is 200~500mgS / m 3 Under these conditions, the hydrolysis conversion rate of carbonyl sulfide and the adsorption rate of hydrogen sulfide were measured at five different temperatures of 200°C, 250°C, 300°C, 350°C, and 400°C. Table 3.

[0033] Table 3 Hydrolysis conversion rate of carbonyl sulfide and hydrogen sulfide adsorption rate on...

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Abstract

An intermediate temperate carbonyl sulfur hydrolysis catalyst and the preparation method and use is provided, which belongs to the technology field of catalyst and the preparation method and use. The invention is mainly improving the anti-sulfate performance of the catalyst under intermediate temperature by adding modifier V2O5 to change the composite of the catalyst, the preparation method is that: mix the components of catalyst with porous materials components evenly, add water or nitric acid to knead, extrude to forming, then dry and activate. When the catalyst is Phi 3mm multiple 5mm industrial grain, under the normal pressure, the reaction temperature is 200 to 400 DEG C., the airspeed is 4000 to 10000h-1, the concentration of COS is lower than 500mgS / m3. The catalyst in the invention has high COS hydrolysis activity and anti-sulfate performance, the COS hydrolysis conversion rate is more than 99 per cent, which can be used in 200 to 400 DEG C. COS hydrolysis conversion in the feed gas with a 0 to 12 per cent of 02 content.

Description

technical field [0001] The invention relates to a medium-temperature carbonyl sulfide hydrolysis catalyst and its preparation method and application, which belong to the field of catalysts and its preparation, and specifically relate to a medium-temperature carbonyl sulfide hydrolysis catalyst and a preparation method thereof, which are mainly used for removing organic sulfur in raw material gas. Background technique [0002] As we all know, organic sulfur, especially carbonyl sulfide (COS), widely exists in the chemical production raw material gas that uses coal, natural gas and petroleum as raw materials, and its presence will cause catalyst poisoning and deactivation in the subsequent production process. Especially at present, as low-quality coal and coke oven gas are used in the preparation of synthetic raw material gas, as well as the research, development and use of new technologies or new processes such as coal-to-gas polygeneration and low-temperature water vapor shif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/22B01J23/04C10K1/34B01D53/86
Inventor 上官炬王会娜梁丽彤樊惠玲沈芳梁生兆苗茂谦谢克昌
Owner TAIYUAN UNIV OF TECH
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