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Preparation method and application of unconventional natural gas deoxygenation catalyst

An unconventional natural gas and oxygen catalyst technology, applied in molecular sieve catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., to achieve high deoxygenation efficiency, easy automatic control, and reduced energy consumption.

Active Publication Date: 2014-02-26
CHENGDU ZHONGKE ENERGY & ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for many factories that do not produce hydrogen and carbon monoxide themselves, there are many problems in the source of raw materials and how to transport and store them safely, so this method has great limitations

Method used

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  • Preparation method and application of unconventional natural gas deoxygenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The active component of the catalyst in this example is metal palladium, and titanium dioxide is used as a carrier to finally obtain an unconventional natural gas deoxygenation catalyst with a mass content of about 0.01% of the active component of the catalyst, numbered cat1. The specific preparation method is:

[0032] (1) Dissolve palladium chloride in deionized water to make 50ml palladium chloride impregnation solution with a concentration of 0.1mol / L;

[0033] (2) Take 10.000g of titanium dioxide carrier and immerse it in the impregnating solution prepared in step (1) for 10 minutes at room temperature to prepare unconventional natural gas deoxygenation catalyst precursor a1;

[0034] (3) Dry the catalyst precursor a1 prepared in step (2) at 110°C for 3 hours, repeat steps (2)-(3), and finally obtain an unconventional natural gas deoxygenation containing about 0.01% palladium by mass Catalyst precursor b1;

[0035] (4) Immerse the catalyst precursor b1 prepared i...

Embodiment 2

[0037] The active component of the catalyst in this example is metal palladium, and silica is used as a carrier to finally obtain an unconventional natural gas deoxygenation catalyst with a mass content of about 0.03% of the active component of the catalyst, numbered cat2. The specific preparation method is:

[0038] (1) Dissolve palladium chloride in deionized water to make 50ml palladium chloride impregnation solution with a concentration of 0.1mol / L;

[0039] (2) Take 10.000g of silica carrier and immerse it in the impregnating solution prepared in step (1) for 10 minutes at room temperature to make unconventional natural gas deoxygenation catalyst precursor a2;

[0040] (3) Dry the catalyst precursor a2 prepared in step (2) at 100°C for 3 hours, repeat steps (2)-(3), and finally obtain unconventional natural gas deoxygenation containing about 0.03% palladium element mass catalyst precursor b2;

[0041] (4) Immerse the catalyst precursor b2 prepared in step (3) in the for...

Embodiment 3

[0043] The active component of the catalyst in this example is metal platinum, and gamma alumina is used as the carrier to finally obtain an unconventional natural gas deoxygenation catalyst with a mass content of about 0.01% of the active component of the catalyst, numbered cat3. The specific preparation method is:

[0044] (1) Dissolve platinum nitrate in deionized water to make 50ml of platinum nitrate impregnation solution with a concentration of 0.1mol / L;

[0045] (2) Take 10.000g of γ-alumina carrier and immerse it in the impregnating solution prepared in step (1) for 10 minutes at room temperature to prepare unconventional natural gas deoxygenation catalyst precursor a3;

[0046] (3) Dry the catalyst precursor a3 prepared in step (2) at 120°C for 3 hours, repeat steps (2)-(3), and finally obtain unconventional natural gas deoxygenation containing about 0.01% platinum element mass Catalyst precursor b3;

[0047] (4) Immerse the catalyst precursor b3 prepared in step (3...

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Abstract

The invention discloses a preparation method and application of an unconventional natural gas deoxygenation catalyst. The catalyst is composed of an active component and a carrier. The catalyst active component is one or more of metal platinum (Pt), palladium (Pd), ruthenium (Ru) and iridium (Ir), and the catalyst carrier is one or more of titanium dioxide, alumina, silica, molecular sieve, zeolite, kaolin and the like. Calculated according to metal elementary substances, the mass content of the catalyst active component is 0.01-0.1% and the balance is the carrier. Methanol is employed as a deoxidizer. The catalyst provided by the invention has the advantages of stable properties, high activity, low deoxygenation operation temperature and the like, and is capable of processing the unconventional natural gas such as coal bed gas and the like with an oxygen volume content of 0.1-5% and reducing the oxygen volume content in the unconventional natural gas to a number less than 0.1%.

Description

technical field [0001] The invention relates to a catalyst, in particular to a preparation method and application of an unconventional natural gas deoxygenation catalyst. Background technique [0002] Coal bed methane, shale gas, etc. are combustible gases containing a large amount of methane that exist in coal seams or geological formations. Coal bed methane and shale gas are new energy sources with high calorific value and no pollution, and their exploitation and utilization are increasingly valued by various countries. Unconventional natural gas such as coalbed methane and shale gas will be mixed with different amounts of oxygen during development and utilization, resulting in a greater safety hazard in the process of transportation and subsequent separation and utilization. my country's coalbed methane and shale gas reserves are abundant, but affected by the inability to use them reasonably and safely, a large amount of coalbed methane is released into the atmosphere ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/44B01J23/42B01J29/74B01J29/12B01J29/44C10L3/10
Inventor 邢建东胡像锋罗仕忠储伟陈卫昌黄亚军倪宏志黄显波
Owner CHENGDU ZHONGKE ENERGY & ENVIRONMENTAL PROTECTION CO LTD
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