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A kind of coal bed gas deoxidation catalyst and preparation method thereof

A deoxidation catalyst and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve problems such as high energy consumption

Active Publication Date: 2021-08-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, non-noble metals are limited by their activity and need to be reacted at a higher temperature, which consumes a lot of energy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare aluminum hydroxide slurry by hydrolysis of aluminum isopropoxide: mix water and aluminum isopropoxide at a molar ratio of 120:1, control the hydrolysis temperature at 80°C-85°C, hydrolyze aluminum isopropoxide for 1.5h, and then carry out aging , the aging temperature was controlled at 90°C-95°C, the aging time was 18h, and an aluminum hydroxide slurry with a solid content of 21.3wt% was obtained.

[0022] Spray immersion process: first mix copper nitrate and aluminum hydroxide slurry evenly, then spray immerse 500g of zirconium sulfate (commercially available product, equivalent diameter 4mm) with the mixed solution, dry and roast to obtain the coalbed methane deoxidation catalyst. The drying time is 4 hours, and the drying temperature is 100° C.; the calcination time is 6 hours, and the temperature is 400° C.

[0023] The properties of the catalyst are as follows: copper-loaded alumina is wrapped around zirconium sulfate, and the weight ratio of copper-loaded ...

Embodiment 2

[0026] Prepare aluminum hydroxide slurry by hydrolysis of aluminum isopropoxide: mix water and aluminum isopropoxide at a molar ratio of 120:1, control the hydrolysis temperature at 80°C-85°C, hydrolyze aluminum isopropoxide for 1.5h, and then carry out aging , the aging temperature was controlled at 90°C-95°C, the aging time was 18h, and an aluminum hydroxide slurry with a solid content of 21.3wt% was obtained.

[0027] Spray immersion process: first mix copper nitrate and aluminum hydroxide slurry evenly, then spray immerse 500g of zirconium sulfate (commercially available product, equivalent diameter is 5mm) with the mixed solution, dry and roast to obtain the coalbed methane deoxidation catalyst. The drying time is 4 hours, and the drying temperature is 100° C.; the calcination time is 6 hours, and the temperature is 400° C.

[0028] The properties of the catalyst are as follows: copper-loaded alumina is wrapped around zirconium sulfate, and the weight ratio of copper-load...

Embodiment 3

[0031] The aluminum hydroxide slurry is prepared by carbonization method of passing carbon dioxide gas into the sodium metaaluminate solution: 30wt% CO 2 CO 2 / N 2 The mixed gas is passed into the sodium metaaluminate solution, and the gelation reaction is carried out at 30°C. The pH of the reaction end point is controlled to be 10.5-11.0. After the reaction is completed, it is aged and washed with deionized water at 60°C until the pH of the filtrate is 6.5. An aluminum hydroxide slurry with a solid content of 31.2 wt% was obtained.

[0032] Spray immersion process: First, mix copper nitrate and aluminum hydroxide slurry evenly, then spray immerse 500g of zirconium sulfate (commercially available product, equivalent diameter is 3 mm) with the mixed solution, and then dry and roast to obtain the coalbed methane deoxidation catalyst. The drying time is 4 hours, and the drying temperature is 100° C.; the calcination time is 6 hours, and the temperature is 400° C.

[0033] The ...

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Abstract

The invention discloses a coal bed gas deoxidation catalyst. The catalyst contains copper-loaded alumina and zirconium sulfate. The copper-loaded alumina is wrapped around zirconium sulfate. The weight ratio of the copper-loaded alumina to zirconium sulfate is is 8:1-2:1, based on the weight of aluminum oxide loaded with copper, the content of copper in terms of oxides is 5wt%-25wt%; the preparation method of the catalyst includes the following content: firstly, the copper-containing compound and The aluminum hydroxide slurry is evenly mixed, and then the mixed solution is sprayed and soaked around the zirconium sulfate, dried and roasted to obtain a coal bed gas deoxidation catalyst. The catalyst has the advantages of high activity, low reaction temperature, simple preparation method, low cost and the like when used for coal bed gas deoxidation.

Description

technical field [0001] The invention relates to a coal bed gas deoxidation catalyst and a preparation method thereof, in particular to a low-temperature high-activity coal bed gas deoxygenation catalyst and a preparation method thereof. Background technique [0002] my country is a big coal producing country, and a large amount of coalbed methane with different concentrations will be produced every year due to coal production. Developing effective coalbed methane utilization technology and reducing direct methane emissions are the key to building an energy-saving and environmentally friendly sustainable development model in my country and creating a low-carbon economy. an integral part of the system. Combining energy conservation and emission reduction and the improvement of environmental requirements, effectively and reasonably develop coalbed methane, a low-grade energy source, and convert it into usable resources, expand the scope and scale of coalbed methane use, and impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/72C10L3/00C10L3/10
Inventor 李杰张信伟倪向前王海洋
Owner CHINA PETROLEUM & CHEM CORP
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