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Catalyst based on solid carbon-rich fuel pyrolysis and preparation method thereof

A catalyst and carbon-rich technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of complicated catalyst preparation process and energy waste

Inactive Publication Date: 2020-10-20
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the preparation process of the porous carbon material used as the carrier and the calcination preparation process of the catalyst need to be maintained in a high-temperature environment, resulting in a complicated process and energy waste in the catalyst preparation process.

Method used

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  • Catalyst based on solid carbon-rich fuel pyrolysis and preparation method thereof

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preparation example Construction

[0018] One aspect of the present invention provides a method for preparing a catalyst based on pyrolysis of solid carbon-rich fuel, comprising the steps of:

[0019] The solid carbon-rich fuel such as coal or biomass is pulverized and immersed in a mixed solution of manganese nitrate and copper nitrate or manganese nitrate and ferric nitrate. After the impregnation is completed, it is put into a settling furnace for pyrolysis to obtain a catalyst.

[0020] A large amount of tar will be generated in the direct pyrolysis process of biomass, and the generation of tar will affect the utilization of solid carbon. However, in the present application, by coating the catalyst with a good effect on the surface of the fuel, the deposition of a large amount of tar is minimized, which is beneficial to improving the catalytic performance of the catalyst.

[0021] Wherein the selected catalyst may be a mixed solution of manganese nitrate and copper nitrate or manganese nitrate and ferric ni...

Embodiment 1

[0039] 500 g of biomass prepared in advance was crushed into particles with a particle size of 1 mm, and left for 20 h.

[0040] The manganese nitrate solid and copper nitrate were sampled according to the molar ratio of 1:1, and the weighed two nitrates were mixed and dissolved in deionized water to prepare a mixed solution with a mass fraction of 50%.

[0041] Add the pre-treated biomass particles, and magnetically stir the nitrate mixed solution at 40°C for 4 hours. At the beginning of stirring, slowly add the precipitating agent sodium carbonate into the copper-manganese nitrate mixed solution, so that it can Sufficient precipitation is complete, and the precipitate is filtered.

[0042] Such as figure 1 As shown, the pretreated biomass is put into the inside of the settling furnace 8 through the feeder 4;

[0043] After the nitrogen from the first nitrogen tank 1 and the oxygen from the first oxygen tank 2 are mixed in the primary air mixer 3, the primary wind is obtain...

Embodiment 2

[0048] 500 g of biomass was crushed into particles with a particle size of 1 mm and left for 24 h.

[0049] The solid manganese nitrate and ferric nitrate were taken out according to the molar ratio of 9:1, and the weighed two nitrates were mixed and dissolved in deionized water to prepare a mixed solution with a mass fraction of 50%.

[0050] At this time, put the pretreated biomass particles into the mixed solution, and let the nitrate mixed solution be magnetically stirred at 40°C for 4 hours. solution, so that it can fully precipitate completely, and filter the precipitate.

[0051] Put the obtained biomass fuel into the settling furnace for combustion, using the flash pyrolysis method, the primary air uses the gas mixed with oxygen and water vapor to blow the biomass powder into the settling furnace device, the volume fraction of oxygen is 5%, and the water vapor The volume fraction is 30%, and the others are nitrogen.

[0052] The secondary air enters the system throug...

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Abstract

The invention discloses a catalyst based on solid carbon-rich fuel pyrolysis and a preparation method thereof. The preparation method comprises the following steps: crushing solid carbon-rich fuel such as coal or biomass, then dipping in a mixed solution of manganese nitrate and copper nitrate or manganese nitrate and ferric nitrate, and after dipping is completed, putting into a settling furnacefor pyrolysis to obtain the catalyst. Before pyrolysis of the carbon-rich fuel, the carbon-rich fuel is impregnated in a catalyst metal ion solution in advance, then a pyrolysis calcination process iscarried out, and a required catalyst product is directly generated; on the other hand, the pyrolysis process of the carbon-rich fuel can be catalyzed in the process, and efficient utilization of thecarbon-rich fuel is achieved. According to the technology, pyrolysis of the carbon-rich fuel and preparation of the catalyst are combined, effective utilization of pyrolysis products of the carbon-rich fuel is improved, meanwhile, the preparation process of the catalyst is optimized, and good application benefits are achieved.

Description

technical field [0001] The invention relates to the field of catalyst preparation and processing, in particular to a catalyst based on pyrolysis of solid carbon-rich fuel and a preparation method thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Solid carbon-rich fuel has always been one of the important energy sources for human survival. In terms of reserves, solid energy such as coal and biomass are energy resources with very rich reserves in the world. During the carbonization and activation pyrolysis process of solid carbon-rich fuel, solid carbon materials, tar, pyrolysis gas and other components will be produced. The solid product is an excellent porous carbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01D53/86B01D53/56
CPCB01D53/8628B01D53/865B01J23/8892
Inventor 付加鹏胡俊张敬儒程星星王志强宋占龙王文龙
Owner SHANDONG UNIV
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