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Molding method and application of catalyst

A molding method and catalyst technology, applied in the direction of chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve problems such as drop, insufficient particle strength, catalyst pulverization stability, etc., to improve reaction efficiency, The effect of improving the molding strength and ensuring the stability of the catalyst particle strength and performance

Pending Publication Date: 2022-05-13
珠海市福沺能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problem that the particle strength of the carbon dioxide hydrogenation catalyst iron catalyst is not enough during the scale-up and long-term high-temperature carbon dioxide hydrogenation reaction process, which leads to the powdering of the catalyst and the decrease in stability.

Method used

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  • Molding method and application of catalyst
  • Molding method and application of catalyst
  • Molding method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The catalyst molding process is as follows: (a) carry out dry granulation (the same below) to the iron catalyst containing sodium (2% by mass) obtained by the aforementioned patent precipitation method to obtain catalyst particles of 5 mm; (b) obtain the Catalyst particles are pulverized and screened to obtain 80-mesh catalyst particles; (c) the catalyst particles obtained in (b) are mixed with the binder of the same mesh number, and then compressed into tablets (pressure 2MPa, the same below), to obtain Cylindrical industrial catalysts.

[0041] Using high-purity graphite (purity>99.9%) as the binder;

[0042] The diameter x height of cylindrical industrial catalysts is 5x4 mm;

[0043] When mixing the catalyst particles obtained in (b) with the binder of the same mesh number, the mass ratio is 99:1DD190228I-5.

[0044] Through the strength test (YPD-200C type tablet hardness tester, the same below), the positive pressure strength of the catalyst prepared by the abov...

Embodiment 2

[0049] The catalyst forming process is as follows: (a) the iron catalyst containing sodium (2% by mass) obtained by the aforementioned precipitation method is dry granulated to obtain catalyst particles of 0.5 mm; (b) the obtained catalyst particles are pulverized and Screening to obtain 80-mesh catalyst particles; (c) mixing the catalyst particles obtained in (b) with a binder of the same mesh number, and then performing tablet molding to obtain a cylindrical industrial catalyst.

[0050] Using high-purity graphite (purity>99.9%) as the binder;

[0051] The diameter x height of cylindrical industrial catalysts is 5x4 mm;

[0052] When mixing the catalyst particles obtained in (b) with the binder of the same mesh number, the mass ratio is 99:1.

[0053] Through strength test, by the catalyst positive pressure strength 390N / cm that above-mentioned steps makes, lateral pressure strength 100N / cm, after 200 hours of reaction evaluation (reaction condition is the same as embodimen...

Embodiment 3

[0057] The catalyst molding process is as follows: (a) the iron catalyst containing potassium (2% by mass) obtained by the aforementioned precipitation method is dry granulated to obtain catalyst particles of 5 mm; (b) the obtained catalyst particles are pulverized and screened , to obtain 40-mesh catalyst particles; (c) mix the catalyst particles obtained in (b) with the binder of the same mesh number, and then carry out tablet molding to obtain a cylindrical industrial catalyst.

[0058] Using high-purity graphite (purity>99.9%) as the binder;

[0059] The diameter x height of cylindrical industrial catalysts is 5x4 mm;

[0060] When mixing the catalyst particles obtained in (b) with the binder of the same mesh number, the mass ratio is 99:1.

[0061] Through strength test, by the catalyst positive pressure strength 290N / cm that above-mentioned steps makes, lateral pressure strength 70N / cm, after 200 hours of reaction evaluation (reaction condition is the same as embodiment...

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Abstract

The invention discloses a forming method and application of a catalyst, and the forming method comprises the following steps: (1) granulating the catalyst to obtain catalyst particles of 0.5-5 mm; (2) crushing and screening the catalyst particles obtained in the step (1) to obtain 30-80-mesh catalyst particles; and (3) mixing the catalyst particles obtained in the step (2) with a binder with a particle size of 30-80 meshes, and carrying out tabletting molding to obtain the molded catalyst, the catalyst comprises an active component; the active component comprises an iron element. According to the invention, the binder and the active component of the catalyst form strong interaction, the raw material molecule adsorption and catalysis process in the specific reaction process of carbon dioxide hydrogenation is enhanced, the reaction efficiency is greatly improved, and the stability of the strength and performance of the catalyst particles under the long-time high-temperature reaction condition is ensured.

Description

technical field [0001] The application relates to a catalyst forming method and its application, belonging to the field of catalyst preparation. Background technique [0002] Greenhouse gases such as carbon dioxide lead to a series of major environmental problems such as global warming and ocean acidification. In nature, green plants can absorb carbon dioxide from the air and convert it into organic matter and oxygen through photosynthesis, but the process is slow, so scientists have been trying to recycle carbon dioxide through chemical conversion. Although carbon dioxide is the main greenhouse gas, it is also a "carbon resource" that exists in large quantities in nature. If we can use renewable energy to obtain electricity and split water to produce hydrogen, and convert carbon dioxide into chemicals or fuels, not only can the greenhouse be realized. Gas emission reduction, but also help to solve the problem of excessive dependence on fossil fuels and storage of renewable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/78B01J37/00C01B32/40C07C1/12C07C9/04C07C9/06C07C9/08C07C9/10C07C9/14
CPCB01J23/78B01J37/0063B01J37/0009C01B32/40C07C1/12C07C9/04C07C9/06C07C9/08C07C9/10C07C9/14
Inventor 孙剑葛庆杰位健
Owner 珠海市福沺能源科技有限公司
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