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Biocoke gasification catalyst and biocoke catalytic raw material

A biocoke and catalyst technology, applied in the field of biocoke gasification, can solve the problems of difficulty in large-scale use, high cost of potassium carbonate biocoke catalytic gasification, etc., achieve low price, improve water conversion rate and syngas Productivity, effect of gasification reaction activity promotion

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

Potassium carbonate has the most significant catalytic effect among potassium salts, but 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

[0036] Weigh 1.1g of KCl and add it to 20g of water, and mix well to obtain a KCl aqueous solution, then weigh 14g of rice husk pyrolysis biocoke with a particle size of less than 2mm, mix it with the KCl aqueous solution, and process it under stirring for 6 hours; then mix the uniform The material was dried in a blast drying oven at 80°C for 6 hours to obtain biocoke impregnated with KCl, and the above sample was mixed with 0.91g CaCO 3 Mix evenly, then put it into a blast drying oven and dry it at 120°C for 4 hours, then put the obtained sample into a microwave fixed bed reactor for steam gasification reaction, the reaction conditions are: temperature 850°C, normal pressure , the flux of water was 0.5mL / min, and after 50min of reaction, the average water conversion rate during the reaction process was 84%, and the synthesis gas yield was 1068g / kg biocoke.

Embodiment 2

[0038] Weigh 16g rice husk pyrolysis biochar with a particle size less than 2mm, 0.7g KCl, 0.43g CaCO 3 , mix the above samples evenly, and then put them into a blast drying oven and dry at 105°C for 5 hours to obtain catalyst-loaded biocoke. Put the above samples into a microwave fixed-bed reactor for steam gasification reaction. The conditions are: temperature 800°C, normal pressure, water flux 0.6mL / min, after 40 minutes of reaction, the average water conversion rate during the reaction process is 75%, and the synthesis gas yield is 893g / kg biocoke.

Embodiment 3

[0040] Weigh 13g of rice husk pyrolysis biochar with particle size less than 2mm, 1.5g of NaCl, 0.6g of CaCO 3, mix the above samples evenly, and then put them into a blast drying oven and dry at 110°C for 5 hours to obtain catalyst-loaded biocoke. Put the above samples into a microwave fixed-bed reactor for steam gasification reaction, and react The conditions are: temperature 850°C, normal pressure, water flux 0.35mL / min, after 65 minutes of reaction, the average water conversion rate during the reaction process is 85%, and the synthesis gas yield is 1140g / kg biocoke.

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PUM

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Abstract

The invention discloses a biochar gasification catalyst and a biochar catalytic raw material. The catalyst comprises alkali metal halide and alkaline earth metal carbonate. The biochar catalytic raw material comprises a biochar raw material, alkali metal halide and alkaline earth metal carbonate. 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] Biomass pyrolysis technology can convert biomass into high value-added products such as gas, syngas, and bio-oil, and realize the efficient conversion and utilization of biomass energy. As a solid product of pyrolysis, biomass semi-coke accounts for about 10-30% of the gasification products have extremely rich reuse energy. Biochar has a complex pore structure and good surface chemical properties, which can effectively adsorb and remove heavy metals, polycyclic aromatic hydrocarbons and other components in soil, water, flue gas, so most of the further utilization of biochar focuses on soil improvement applications such as solvents and adsorbents. Actively explore biocoke gasification technology, use low-quality biocoke to produce high-quality syngas products with a wide range ...

Claims

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Application Information

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IPC IPC(8): B01J27/10B01J27/12B01J27/232B01J27/08C10J3/00
CPCB01J27/10B01J27/12B01J27/232B01J27/08C10J3/00C10J2300/0916C10J2300/0976C10J2300/0986Y02P20/52
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