A kind of preparation method and application of biomass activated semi-coke catalyst

A biomass and catalyst technology, which is applied in the field of preparation of biomass activated semi-coke catalysts, can solve the problems of reducing the catalyst surface area and catalytic activity, and achieve the effects of reducing costs, improving energy utilization, and developing porosity

Active Publication Date: 2022-03-04
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the carbon generated by the carbon deposition reaction will cover the surface of the biochar, which will reduce the catalyst surface area and catalytic activity, so the conversion rate will decrease from 94% to 46% within 0-4 hours.

Method used

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  • A kind of preparation method and application of biomass activated semi-coke catalyst
  • A kind of preparation method and application of biomass activated semi-coke catalyst
  • A kind of preparation method and application of biomass activated semi-coke catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Weigh 1 g of rice husks with a moisture content of 5% and a particle size between 250 μm and 600 μm in terms of mass percentage, and place it in a fixed-bed reactor under N 2 In the process, the temperature was raised to 800°C at a heating rate of 10°C / min, held for 1h, cooled down to room temperature, and a pyrolyzed biomass semi-coke catalyst was obtained, coded as A.

Embodiment 2

[0033] Weigh 1 g of wood chips with a moisture content of 5% and a particle size between 250 μm and 600 μm in terms of mass percentage, and place it in a fixed-bed reactor under N 2 In the process, the temperature was raised to 800°C at a heating rate of 10°C / min, held for 1h, and cooled down to room temperature to obtain a pyrolyzed biomass semi-coke catalyst, coded as B.

Embodiment 3

[0035]Weigh 1 g of corn cobs with a moisture content of 5% and a particle size between 250 μm and 600 μm in terms of mass percentage, place it in a fixed-bed reactor, and heat up at a rate of 10°C / min in helium Raise the temperature to 800° C., keep it for 1 hour, cool down to room temperature, and obtain a pyrolyzed biomass semi-coke catalyst, coded as C.

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Abstract

The invention discloses a preparation method and application of a biomass activated semi-coke catalyst. In this method, biomass is used as raw material, and biomass semi-coke is prepared by pyrolysis at a temperature of 500-800°C in an inert atmosphere. The obtained biomass semi-coke is activated by different activation methods and finally used for catalytic cracking of tar. catalyst. The obtained catalyst exhibits good catalytic activity of the tar model compound naphthalene, is used for catalyzing the tar steam reforming process of the biomass gasification process, and has a high tar conversion rate.

Description

technical field [0001] The invention belongs to the technical field of biomass energy chemical industry, and in particular relates to a preparation method and application of a biomass-activated semi-coke catalyst. Background technique [0002] Gasification is an effective means to convert biomass into gaseous fuels. However, in the gasification process, in addition to producing CO, CO 2 、CH 4 、H 2 In addition to other small molecule gases, tar will also be produced. The existence of tar not only affects the utilization of gasification products, but also blocks and corrodes downstream pipelines and devices, thereby affecting the normal operation of the device and the gasification process. Therefore, effective removal of tar in gasification products is a key issue in solving the popularization and application of biomass gasification technology. [0003] At present, the most commonly used method for removing tar is to use a catalyst to carry out catalytic cracking of tar un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18B01J23/02B01J37/08B01J38/64B01J38/06C10C1/00C10C1/20G01N31/10
Inventor 赵素英李胜奇陈志伟林若兰林晓薇
Owner FUZHOU UNIV
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