Biochar gasification catalyst and biochar catalytic feedstock

A biocoke and catalyst technology, applied in the field of biocoke gasification, can solve the problems of large-scale use and high gasification cost, shorten the time required for gasification, improve gasification reaction activity, and catalyze The effect of gasification activity improvement

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although potassium carbonate has good catalytic activity when used as a biocoke gasification catalyst, the high price of potassium carbonate has become the main problem of the high cost of biocoke catalytic gasification, and large-scale use has also become a problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 2gKCl, 1.4gMgSO4, 23g water, mix and stir well, after stirring evenly, get KCl and MgSO 4 solution, and then weighed 15g of corn stalk pyrolysis biochar with particle size less than 2mm, and mixed with KCl and MgSO 4The solution was mixed and stirred for 6 hours; finally, the uniformly mixed material was put into a blast drying oven and dried at 60°C for 12 hours to obtain a sample of biocoke catalytic raw material prepared by impregnation method, and the above sample was placed in a microwave fixed bed The steam gasification reaction is carried out in the reactor, the reaction conditions are: temperature 850°C, normal pressure, water flux 0.3mL / min, after 50 minutes of reaction, the average water conversion rate in the reaction process is 79%, and the syngas production The rate was 1156g / kg biochar.

Embodiment 2

[0042] Weigh 15g of rice husk pyrolysis biocoke with a particle size of less than 2mm, 1.2gKCl, 0.9gMgSO4, mix the above samples evenly, and then use a blast drying oven to dry at 105°C for 6 hours to obtain the biocoke prepared by the dry mixing method. Raw material samples, put the above samples into a microwave fixed-bed reactor for steam gasification reaction, the reaction conditions are: temperature 800°C, normal pressure, water flux 0.6mL / min, after 40 minutes of reaction, during the reaction The average water conversion rate was 76%, and the synthesis gas yield was 1346g / kg biochar.

Embodiment 3

[0044] Weigh 15g rice husk pyrolysis biocoke with a particle size of less than 2mm, 3.2gNaCl, 1.1gMgSO4, mix the above samples evenly, and then use a blast drying oven to dry at 115°C for 5 hours to obtain the biocoke prepared by the dry mixing method. Raw material samples, put the above samples into a microwave fixed bed reactor for steam gasification reaction, the reaction conditions are: temperature 800°C, normal pressure, water flux 0.5mL / min, after 65 minutes of reaction, during the reaction The average water conversion rate was 81%, and the synthesis gas yield was 1128g / kg biochar.

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Abstract

The invention discloses a bio-coke gasification catalyst and a bio-coke catalytic raw material. The bio-coke gasification catalyst comprises alkali metal halide and alkaline earth metal sulfate. The biological coke catalytic raw materials comprise a biological coke raw material, alkali metal halide and alkaline earth metal sulfate. The biochar catalytic raw material can be prepared by a dry method or a wet method. When the gasification catalyst is used for a water vapor gasification reaction of the biological coke, the water conversion rate and the synthesis gas yield can be greatly improved, and the gasification reaction activity of the biological coke is remarkably improved.

Description

technical field [0001] The invention relates to the field of biocoke gasification, in particular to a biocoke gasification catalyst and a biocoke catalytic raw material. Background technique [0002] As a new type of green energy, biomass energy has the advantages of wide sources, low price, and low content of harmful elements, and is considered to be the most likely energy source to replace fossil fuels. Biomass pyrolysis and biomass gasification are two technologies that have attracted much attention in the modern utilization of biomass. Biomass pyrolysis technology can convert biomass pyrolysis products into high-quality industrial energy and realize the conversion and utilization of chemicals. Among them, semi-coke, a solid product of pyrolysis and gasification, accounts for about 100% of pyrolysis and gasification products. 10% to 30%, with extremely rich reuse energy. The biomass gasification process includes two parts: biomass pyrolysis and semi-coke gasification. A...

Claims

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Application Information

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IPC IPC(8): B01J27/10B01J27/12B01J27/138B01J27/055C10J3/00
CPCB01J27/10B01J27/12B01J27/138B01J27/055C10J3/00C10J2300/0916C10J2300/0976C10J2300/0986Y02P20/52
Inventor 赵丽萍宋永一王鑫张彪王博吴斯侃刘继华张长安
Owner CHINA PETROLEUM & CHEM CORP
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