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A transport bed methanation catalyst, a preparing method thereof and applications of the catalyst

A catalyst, bed methane technology, used in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. The effect of improved strength and wear resistance, good flowability

Inactive Publication Date: 2017-06-30
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar to transport bed catalysts, there are fluidized bed catalysts, but at present, fluidized bed catalysts are mainly prepared by precipitation method, the process is complicated, and most of them have wear problems

Method used

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  • A transport bed methanation catalyst, a preparing method thereof and applications of the catalyst
  • A transport bed methanation catalyst, a preparing method thereof and applications of the catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The specific preparation process of the catalyst of this embodiment is as follows:

[0029] 1) 88.80 grams of Mg(NO 3 ) 2 ·6H 2 O, 14.07 g Zr(NO 3 ) 4 ·5H 2 O, 80.96 g Ni(NO 3 ) 2 ·6H 2 O (AR grade) mixed with 100ml deionized water to make a solution;

[0030] 2) 50 g of α-Al with a particle size distribution of 20-180 μm after roasting treatment 2 o 3 The microspheres were immersed in the above solution and placed in a water bath at 40°C for 2 hours;

[0031] 3) The solution prepared in step 2) was separated by filtration, and the obtained particles were dried at 80° C. for 12 hours.

[0032] 4) The particles obtained in step (3) were calcined at 600° C. for 6 hours to obtain the catalyst of this example.

[0033] Among them, α-Al 2 o 3 The microspheres were calcined at 900°C for 6h in advance.

[0034] The catalyst prepared in this embodiment consists of: 15 parts of NiO, 1 part of ZrO 2 , 5 parts of MgO and 79 parts of Al 2 o 3 , recorded as C1.

Embodiment 2

[0036] The specific preparation process of the catalyst of this embodiment is as follows:

[0037] 1) 85.50 grams of Mg(NO 3 ) 2 ·6H 2 O, 33.78 g Ce(NO 3 ) 3 ·6H 2O (AR grade), 77.88 grams of Ni (NO 3 ) 2 ·6H 2 O mixed and added to 100ml deionized water to make a solution.

[0038] 2) 50 g of α-Al with a particle size distribution of 30-170 μm after roasting treatment 2 o 3 The microspheres were immersed in the above solution and placed in a water bath at 60°C for 2.5 hours;

[0039] 3) The solution prepared in step 2) was separated by filtration, and the obtained particles were dried at 100° C. for 8 hours.

[0040] 4) The particles obtained in step 3) were calcined at 700° C. for 6 hours to obtain the catalyst of this example.

[0041] Among them, α-Al 2 o 3 The microspheres were pre-calcined at 1000 °C for 5 h.

[0042] The catalyst prepared in this embodiment consists of: 15 parts of NiO, 5 parts of CeO 2 , 5 parts of MgO and 75 parts of Al 2 o 3 , record...

Embodiment 3

[0044] The specific preparation process of the catalyst of this embodiment is as follows:

[0045] 1) 88.84 grams of Mg(NO 3 ) 2 ·6H 2 O, 36.88 g La(NO 3 ) 3 (AR grade), 96g Ni(NO 3 ) 2 ·6H 2 O mixed and added to 100ml deionized water to form a solution;

[0046] 2) 50 g of α-Al with a particle size distribution of 50-160 μm after roasting treatment 2 o 3 The microspheres were immersed in the above solution and placed in a water bath at 70°C for 3.5 hours;

[0047] 3) The solution prepared in step 2) was separated by filtration, and the obtained particles were dried at 110° C. for 10 h;

[0048] 4) The particles obtained in step 3) were calcined at 600° C. for 6 hours to obtain the catalyst of this example.

[0049] Among them, α-Al 2 o 3 The microspheres were pre-calcined at 1100 °C for 4 h.

[0050] The catalyst prepared in this embodiment consists of: 18 parts of NiO, 5 parts of La 2 o 3 , 5 parts of MgO and 72 parts of Al 2 o 3 , recorded as C3.

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Abstract

The invention provides a transport bed methanation catalyst and belongs to the technical field of transport bed catalysts. Based on oxides, the catalyst includes 10-30 parts of an active component that is NiO, 0.5-15 parts of an auxiliary agent and 70-90 parts of a carrier that is Al2O3. The auxiliary agent is one or more selected from oxides of Mg, Ca, La, Ce, Zr, Ti and Mo. A preparing method of the catalyst is also provided. The method includes soaking calcinated alpha-Al2O3 microspheres in a solution of an auxiliary metal soluble salt and a soluble salt of Ni, and then drying and calcinating the microspheres to obtain the microsphere type transport bed methanation catalyst. The catalyst has characteristics of a low catalytic activating temperature, high activity, high stability, proper particle diameter distribution, good mobility, good carbon resistance, and good wear resistance, has a microsphere shape, and is suitable for transport bed reactors. The catalyst is prepared by a soaking process, and the preparing process is simple and efficient and facilitates large-scale production.

Description

technical field [0001] The invention belongs to the technical field of catalysts for transport beds, in particular to a transport bed methanation catalyst, a preparation method and an application. Background technique [0002] my country's energy endowment has always been rich in coal, poor in oil, and low in gas, so coal-based energy has become an important energy strategic choice for our country. Methanation is the core technology of coal-to-gas. The mainstream process in the industry is a multi-stage fixed-bed cycle process, which has poor heat transfer, low throughput, difficult temperature control, and high gas cycle costs. In contrast, the transport bed reactor has higher mass and heat transfer performance, and the process flow is more simplified. The difficulty of transport bed methanation is the development of catalysts. At present, most of the methanation catalysts are fixed bed catalysts, mainly including: British Davy CRG, Denmark Topsoe MCR-2, Southwest Chemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/83B01J23/883C10L3/08
CPCC10L3/08B01J23/002B01J23/78B01J23/83B01J23/883B01J2523/00B01J35/51B01J2523/847B01J2523/48B01J2523/22B01J2523/31B01J2523/3712B01J2523/3706B01J2523/47B01J2523/23B01J2523/68
Inventor 王雪峰张新波何洋姜瑛刘玉成曾凌云凡美婷冯雅晨谭青胡彭许光文
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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