Garbage biomass pyrolysis gasification system

A technology of pyrolysis gasification and biomass, applied in the direction of biofuel, special dry distillation, petroleum industry, etc., can solve the problems of difficult recovery and recycling of catalysts, low process economy, increased energy consumption and gas consumption, etc., to achieve shortening Pyrolysis treatment time, increasing the number of layouts, and improving the quality of the effect

Pending Publication Date: 2021-10-22
四川运辉环保工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods all have the problem that the catalyst is difficult to recycle and reuse, and in order to improve H2 / CO, a large amount of water vapor is consumed, which increases energy consumption and gas consumption, and the process economy is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] The dried biomass raw material enters the feeding screw 3 through the first-stage star valve 2, and together with the microwave catalyst Al1.0Zr0.1La0.01O1.85 / SiC that falls from the return pipe 16, the feeding screw 3 Perform mixing and preheating treatment. When the material system reaches 260°C, it enters the pyrolysis reaction chamber 5 through the secondary star valve 4, and falls to the rotating disc 8 under the action of gravity for pyrolysis and gasification reaction. The treatment temperature is 800°C , power density 20×105W / m3, reaction time 0.5 minutes, feed rate 10kg / h. After catalytic cracking, the raw material is converted into most of the pyrolysis volatile products and a small amount of semi-coke, of which pyrolysis volatiles account for 90%, semi-coke accounts for 10%, and pyrolysis volatiles include about 10% condensable components. The generated pyrolysis volatiles are released from the pyrolysis volatiles outlet 11 on the upper part of the pyrolysis ...

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PUM

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Abstract

The invention discloses a garbage biomass pyrolysis gasification system which is characterized in that: blending a dried biomass raw material and a microwave catalyst on a feeding screw, and after the material reaches 100-300 DEG C, pumping the material into a microwave reactor for pyrolysis gasification; carrying out gas-solid separation on the pyrolysis product to obtain gaseous pyrolysis volatile components and solids; returning the solid to the reactor, enabling the solid and the residual solid in the reactor to enter a lifting pipe for combustion, and performing cyclone separation on a combustion product to obtain a regenerated catalyst and high-temperature flue gas; and subjecting the regenerated catalyst and the gaseous pyrolysis volatile component in the step to a high-temperature cracking reaction through a return pipe to prepare a high-quality biomass gas product. The biomass pyrolysis gasification system comprises a raw material dryer, a microwave generator, a pyrolysis reaction cavity, a lifting pipe combustor and a return pipe. The method and the system are high in pyrolysis speed and low in energy consumption, the obtained biomass gas is high in quality, the requirement of synthesizing liquid fuel can be met, and the method and the system have good application prospects.

Description

technical field [0001] The invention relates to a waste biomass pyrolysis gasification system. Background technique [0002] As a new technology for energy development, biomass gasification technology can convert low-grade solid biomass raw materials into high-grade clean gas fuels, which can effectively reduce greenhouse gas emissions and is a sustainable clean energy transformation. technology. Compared with the traditional gasification method, the microwave heating method can realize simultaneous heating of the inside and outside of the material, strengthen the heat transfer process of the material, and help improve the gasification rate of biomass, and through reasonable temperature control, secondary reactions can be reduced , simplifying the final product. Many studies have proved that microwave pyrolysis gasification products are rich in syngas components, and the by-product biochar has higher reactivity than non-microwave pyrolysis semi-coke, and is also an excelle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C10B57/06C10B57/00
CPCC10B53/02C10B57/06C10B57/005Y02E50/10
Inventor 周晖卿尚伟白坤骆韫诗张城华
Owner 四川运辉环保工程有限公司
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