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Oxygen-containing coalbed methane carbon dioxide reforming synthesis gas catalyst and preparation method thereof

A carbon dioxide and catalyst technology, applied in the field of carbon dioxide reforming of oxygen-containing coalbed methane to syngas catalyst and its preparation, can solve the problems of pollution, waste of oxygen-containing coalbed methane, etc., achieve reasonable material ratio, improve service life, and accurate data Effect

Active Publication Date: 2015-07-29
SHANXI DATONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to seek to prepare a cheap, easy-to-prepare, and highly uniformly dispersed active components in the catalyst containing Oxygen-coal bed methane carbon dioxide reforming catalyst to provide a high-nickel-content oxygen-containing coal-bed methane reforming catalyst with high catalytic efficiency, high thermal stability, and high carbon deposition resistance and a method for preparing high-nickel-content oxygen-containing coal seams Preparation method of gas reforming catalyst

Method used

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  • Oxygen-containing coalbed methane carbon dioxide reforming synthesis gas catalyst and preparation method thereof
  • Oxygen-containing coalbed methane carbon dioxide reforming synthesis gas catalyst and preparation method thereof
  • Oxygen-containing coalbed methane carbon dioxide reforming synthesis gas catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Sol-gel Preparation of Oxygenated Coal Bed Gas Carbon Dioxide Reforming to Syngas Catalyst

[0031] Raw materials: First, according to the ratio of the mass of nickel nitrate: the mass of cobalt nitrate: the volume of distilled water is 4.20 ± 0.01g: 1.4 ± 0.010g: 60ml, add nickel nitrate and cobalt nitrate into distilled water respectively to make 30ml Then add the nitrate solution into the pseudo-boehmite hydrosol, add deionized water to 150ml, heat at 90°C and stir for 6h, and form a colloid, put the colloid in a constant temperature oven and dry it at 50°C for 200 hours, then put it in In a vacuum drying oven, evacuate to -0.08MPa, and dry at 90°C for 100 hours to form a solid-phase xerogel, grind the xerogel into powder, and then compress and mold it on a tablet machine at 20MPa to obtain a catalyst precursor , put the catalyst precursor into the quartz boat, and then put the quartz boat into the tube furnace. The temperature in the tube furnace rises fr...

Embodiment 2

[0037] Example 2 Catalysts for carbon dioxide reforming of oxygen-containing coalbed methane with different nickel contents to synthesis gas

[0038] Catalyst preparation: according to the method of example 1, the nickel nitrate weighing amount is respectively 1.40g ± 0.01g, 2.80g ± 0.01g, 4.20g ± 0.01g, 5.60g ± 0.01g, and different Ni contents are 6%, 12 %, 18%, 24% of oxygen-containing coal bed methane carbon dioxide reforming synthesis gas catalyst.

[0039] Evaluation conditions

[0040] with 20%H 2 / N 2 The mixed gas is reduced for 40 minutes, and the total space velocity of the raw gas is 28400cm 3 g -1 h -1 、CH 4 / CO 2 / Air(O 2 ) under the condition that the molar ratio is 1 / 0.4 / 1.4 (0.3), the reaction temperature is 800°C and normal pressure. The evaluation results are shown in Table 2

[0041] Table 2. Reaction performance of catalysts for carbon dioxide reforming of oxygen-containing coalbed methane to synthesis gas with different nickel contents

[0042] ...

Embodiment 3

[0044] Example 3 Catalysts for producing synthesis gas from carbon dioxide reforming of oxygen-containing coalbed methane at different calcination temperatures

[0045] Catalyst preparation: According to the method of Example 1, the calcination temperatures were 600, 700, 800 and 900° C. to prepare synthesis gas catalysts for carbon dioxide reforming of oxygen-containing coalbed methane at different calcination temperatures.

[0046] Evaluation conditions

[0047] with 20%H 2 / N 2 The mixed gas is reduced for 40 minutes, and the total space velocity of the raw gas is 28400cm 3 g -1 h -1 、CH 4 / CO 2 / Air(O 2 ) under the condition that the molar ratio is 1 / 0.4 / 1.4 (0.3), the reaction temperature is 800°C and normal pressure. The evaluation results are shown in Table 3.

[0048] Table 3. Reaction performance of catalysts for carbon dioxide reforming of oxygen-containing coalbed methane to synthesis gas at different calcination temperatures

[0049]

[0050] This exam...

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Abstract

The invention relates to a catalyst for preparing a synthesis gas by reforming carbon dioxide in an oxygen-containing coal bed gas and a preparation method thereof. The catalyst is prepared by the following steps: loading nitrate liquors of nickel and cobalt on pseudo-boehmite by a sol-gel method; and drying, roasting and reducing to obtain the catalyst. The method is simple and easy to industrialize, and the synthesis condition is easy to control. Base metal materials such as nickel and cobalt are wide in source and low in cost. The catalyst prepared by the invention has wider application in reforming oxygen containing coal bed gas.

Description

technical field [0001] The invention relates to a catalyst for producing synthesis gas by carbon dioxide reforming of oxygen-containing coal bed gas and a preparation method thereof, and belongs to the technical field of coal bed gas utilization and catalyst preparation methods. Background technique [0002] Oxygen-containing coalbed methane is a subsidiary product in the coal mining process, and its emission brings high greenhouse effect and environmental pollution. At the same time, oxygen-containing coalbed methane contains a certain amount of methane, which is also a valuable resource. Carbon dioxide is also a greenhouse gas. [0003] The coupling of partial oxidation reforming of methane in oxygen-containing coalbed methane and methane carbon dioxide reforming to synthesis gas is an important method for comprehensive utilization of oxygen-containing coalbed methane and carbon dioxide. It has obvious contributions to the utilization of oxygen-containing coalbed methane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755C01B3/40
CPCY02P20/52
Inventor 屈文山任军谢传金
Owner SHANXI DATONG UNIV
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