Catalyst with methane catalytic combustion and conversion functions and preparation method thereof

A methane catalytic combustion, dual-function catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of raw gas combustion heat retention and large heat release , environmental dust and other problems, to achieve the effect of reducing equipment size, reducing gas volume, and reducing energy consumption

Inactive Publication Date: 2011-12-07
HAO HUA CHENGDU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Among them, only the catalytic combustion method is used for catalyst deoxidation, the heat release of the strong oxidation reaction is relatively large, and the temperature rise of the existing catalyst bed is relatively high, so the equipment investment is relatively large, the process is relatively complicated, and the total combustion heat of the raw material gas is relatively low; The coke deoxidation method consumes valuable coke resources, and the operating cost of the whole system

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  • Catalyst with methane catalytic combustion and conversion functions and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0023] The low-quality coalbed methane catalytic combustion and catalytic conversion dual-function catalyst in this embodiment mainly includes a carrier, active components and additives, in which:

[0024] Take Al 2 o 3 and SiO 2 The mixed material is the raw material, ball milled, shaped and calcined to obtain the integral catalyst carrier, the active components are nickel and manganese (both exist in the catalyst in the form of oxides), and magnesium oxide is used as an auxiliary agent: the mass fraction of the carrier is 94 %, the mass fraction of active components nickel oxide and manganese dioxide is 5%, and the content of magnesium oxide is 1%. In this embodiment, the low-quality coalbed gas catalytic combustion and catalytic conversion dual-function catalyst is prepared by the method of the following main steps:

[0025] (1), high-temperature calcination is obtained carrier: the Al of industrial raw material 2 o 3 and SiO 2 (Al 2 o 3 with SiO 2 The mass ratio i...

Embodiment 2

[0030] The low-quality coalbed methane catalytic combustion and catalytic conversion dual-function catalyst in this embodiment mainly includes a carrier, active components and additives, among which:

[0031] Take Al 2 o 3 The mixture of montmorillonite and montmorillonite is used as the raw material, and the integral catalyst carrier is obtained after molding and calcining. The active components are nickel and cobalt (both exist in the catalyst in the form of oxides), and MgO is used as the auxiliary agent: the mass fraction of the carrier The mass fraction of active components nickel oxide and cobalt oxide is 15%, and the mass fraction of magnesium oxide is 5%.

[0032] In this embodiment, the low-quality coalbed gas catalytic combustion and catalytic conversion dual-function catalyst is prepared by the method of the following main steps:

[0033] (1), high-temperature calcination is obtained carrier: the Al of industrial raw material 2 o 3 and montmorillonite (Al 2 o ...

Embodiment 3

[0040] The low-quality coalbed methane catalytic combustion and catalytic conversion dual-function catalyst in this embodiment mainly includes a carrier, active components and additives, among which:

[0041] Take Al 2 o 3 The mixture of kaolin and kaolin is used as raw material, and the integral catalyst carrier is obtained after molding and calcining. The active components are nickel and cobalt (both exist in the catalyst in the form of oxides), and BaO is used as an auxiliary agent: the carrier content is 70%. The mass fraction of the active components nickel oxide and cobalt oxide is 20%, and the mass fraction of barium oxide is 10%. In this embodiment, the low-quality coalbed gas catalytic combustion and catalytic conversion dual-function catalyst is prepared by the method of the following main steps:

[0042] (1), high-temperature calcination is obtained carrier: the Al of industrial raw material 2 o 3 and kaolin (Al 2 o 3 The mass ratio with kaolin is 1: 1.5) and mi...

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Abstract

The invention discloses a catalyst with functions of methane catalytic combustion and conversion, and a preparation method thereof. The catalyst is an integer honeycomb catalyst, comprising one or a plurality of active components selected from manganese, nickel and cobalt, and one or a plurality of auxiliary agents selected from MgO, La2O3, CeO2 and BaO, wherein the active components are in a form of oxide and account for 5%-20%, and the auxiliary agents account for 1-10%, and the balance is carrier. The catalyst has double functions of methane catalytic combustion and methane steam conversion and can be used in reactions of gas preparation for power generation from low-quality coalbed methane. After reaction, residual oxygen in the gas is little, and a decrease of a feed gas gross calorific value is low; besides the catalyst has high strength, good thermal stability and good low-temperature light-off temperature.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of low-quality coal-bed methane, and particularly relates to a catalyst suitable for removing oxygen in low-quality coal-bed methane and methane steam reforming reaction and a preparation method thereof. Background technique [0002] Coal bed gas is called coal mine gas in coal mines. According to the new resource evaluation results, my country's onshore coalbed methane resources are 36.8 trillion cubic meters, which is equivalent to the onshore conventional natural gas resources (38 trillion cubic meters), but most of the coalbed methane has not been effectively utilized. The emission of a large amount of low-quality coalbed methane not only wastes precious clean energy resources, but also aggravates the impact of the global greenhouse effect. From the point of view of energy saving and environmental protection, it is necessary to separate, purify and recycle them. Separation ...

Claims

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Application Information

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IPC IPC(8): B01J23/34B01J23/83B01J23/78B01J23/889B01J35/04C10L3/00C10L3/10
Inventor 张新波刘玉成冯雅晨李泽军
Owner HAO HUA CHENGDU TECH
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