Deovo catalyst for raw gas of carbon monoxide, preparation, and application

A gas deoxygenation catalyst, carbon monoxide technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of expensive precious metal catalysts and copper-based catalysts , the bed is easy to fly over temperature and other issues, to achieve the effect of not easy to sinter, avoid over temperature, and a wide range of applications

Active Publication Date: 2008-12-10
HAISO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the deoxidation catalysts reported at home and abroad include Pt / Al 2 o 3 , Pd / Al 2 o 3 、CoMo / Al 2 o 3 , CuMn / Al 2 o 3 、CuFe / Al 2 o 3 , CuMn / activated carbon, etc., but precious metal catalysts are expensive, and the operating temperature is high. Non-noble metals are mainly copper-iron, copper-manganese systems, and the operating temperature is above 100 ° C. When the imported oxygen content is high, the catalyst bed is easy to overheat and cause copper Catalyst deactivation on sintering

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dissolve 20 grams of copper acetate and 5 grams of zinc acetate in water, dilute 6 grams of concentrated ammonia water to 15%, mix the two solutions and pour them into a beaker containing 100 grams of 0.05% silicon-modified alumina carrier, after dipping Dry it and bake it at 200°C for 1 hour to prepare a carbon monoxide feed gas deoxidation catalyst.

[0022] The catalyst uses 30% CO + 70% N 2 Activation treatment at 150°C for 8 hours, then cooling down to 50°C, space velocity 6000 hours -1 , can be 30%CO+30%H 2 +38%N 2 +2%O 2 Oxygen removal to 1.2ppm.

Embodiment 2

[0024] Dissolve 15 grams of copper acetate and 5 grams of zinc acetate in water, dilute 10 grams of concentrated ammonia water to a concentration of 10%, mix the two solutions into a beaker containing 100 grams of 0.05% silicon-modified alumina carrier, and dip After drying, and roasting at 180° C. for 1 hour, the carbon monoxide feed gas deoxidation catalyst is obtained.

[0025] The catalyst uses 10% CO + 90% N 2 Activation treatment at 200°C for 8 hours, then cooling down to 80°C, space velocity 3000 hours -1 , can convert 60%CO+10%H 2 +29%N 2 +3%O 2 Oxygen removal to 1.9ppm.

Embodiment 3

[0027] Dissolve 15 grams of copper acetate and 3 grams of zinc acetate in water, add 10 grams of sodium hydroxide to make a 20% solution, mix the two solutions and pour them into a beaker containing 100 grams of 0.1% silicon-modified alumina carrier inside, impregnated, dried, and calcined at 230°C for 1 hour to obtain a carbon monoxide feed gas deoxidation catalyst.

[0028] The catalyst uses 50% CO + 50% N 2 Activation treatment at 120°C for 8 hours, then cool down to 50°C, space velocity 6000 hours -1 , can be 30%CO+30%H 2 +38%N 2 +2%O 2 Oxygen removal to 1.5ppm.

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Abstract

A deoxidizing catalyst for the raw CO gas is composed of the carrier (Si modified aluminum oxide or activated carbon) and the active component (Cu prepared from copper acetate and Zn prepared from zinc acetate). Its preparing process includes such steps as providing the precursor salts of its active metals, adding alkali, codepositing, impregnating on said carrier, drying, and calcining. It has high deoxidizing effect (less than 2ppm).

Description

technical field [0001] The invention relates to a deoxygenation catalyst, in particular to a deoxygenation catalyst for a gas source containing carbon monoxide and its preparation and application. Background technique [0002] At present, the deoxidation catalysts reported at home and abroad include Pt / Al 2 o 3 , Pd / Al 2 o 3 、CoMo / Al 2 o 3 , CuMn / Al 2 o 3 、CuFe / Al 2 o 3 , CuMn / activated carbon, etc., but precious metal catalysts are expensive, and the operating temperature is high. Non-noble metals are mainly copper-iron, copper-manganese systems, and the operating temperature is above 100 ° C. When the imported oxygen content is high, the catalyst bed is easy to overheat and cause copper Catalyst deactivation on sintering. [0003] CN 1220302A discloses a high-concentration carbon monoxide synthesis gas deoxidation catalyst, which is composed of CuMnCo / activated carbon, which can deeply deoxidize high-concentration carbon monoxide gas with an oxygen content of <...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01D53/14
Inventor 孔渝华胡典明刘华伟刘应杰王先厚钱胜涛肖安陆雷军
Owner HAISO TECH
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