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Biomass poly-generation comprehensive utilization method and device

A poly-generation and biomass technology, applied in the fields of biofuels, fertilization devices, bulk chemical production, etc., can solve the problems of incomplete utilization of semi-coke, improve the utilization efficiency and process economy, and save the preparation cost. , the effect of improving the conversion rate

Inactive Publication Date: 2011-10-05
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the solid product semi-coke after the primary pyrolysis of biomass has not been fully utilized

Method used

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  • Biomass poly-generation comprehensive utilization method and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The steps of the polygeneration comprehensive utilization method of biomass are as follows:

[0031] (1) Biomass raw materials are first naturally dried and coarsely crushed (the average particle size is about 1-10cm), and then transported to the microwave pyrolysis chamber through a screw feeding device. The microwave generator is evenly arranged around the microwave pyrolysis chamber, the excitation gun is embedded in the wall of the pyrolysis chamber, and the inner wall is made of non-absorbing material. Before the microwave generator is started, a certain amount of nitrogen is introduced to replace the air in the microwave pyrolysis chamber.

[0032] (2) After the microwave is started, the pyrolysis reaction of biomass begins, and the generated pyrolysis gas (including tar) is directly introduced into the microwave reforming chamber from the tail of the microwave pyrolysis chamber, and the produced semi-coke is directly sent into the microwave reforming chamber . ...

Embodiment 2

[0037] The steps of the polygeneration comprehensive utilization method of biomass are as follows:

[0038] (1) Biomass raw materials are first naturally dried and coarsely crushed (the average particle size is about 1-10cm), and then transported to the microwave pyrolysis chamber through a screw feeding device. The microwave generator is evenly arranged around the microwave pyrolysis chamber, the excitation gun is embedded in the wall of the pyrolysis chamber, and the inner wall is made of non-absorbing material. Before the microwave generator is started, a certain amount of nitrogen is introduced to replace the air in the microwave pyrolysis chamber.

[0039](2) After the microwave is started, the pyrolysis reaction of biomass begins, and the generated pyrolysis gas (including tar) is directly introduced into the microwave reforming chamber from the tail of the microwave pyrolysis chamber, and the produced semi-coke is directly sent into the microwave reforming chamber . U...

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Abstract

The invention relates to a biomass poly-generation comprehensive utilization method and device. The method comprises the steps of: naturally drying and roughly crushing biomass materials, then carrying out microwave heating and cracking in a microwave pyrolysis chamber, introducing thermal gas (tar) and solid semicoke which are generated by microwave heating and cracking into a microwave reforming chamber, and further carrying out microwave heating and reforming on the thermal gas (tar) to convert the thermal gas (tar) into synthesis gas under the catalytic reaction of the semicoke; activating and regenerating the semicoke after catalysis and reforming, and then sending to the microwave reforming chamber for continuous catalytic reaction. In the invention, directional conversion from biomass to synthesis gas is realized by means of microwave radiation, the semicoke generated by pyrolysis is used as a reforming catalyst, two technologies of microwave pyrolysis and microwave reforming are integrated, and the semicoke can be activated and regenerated for recycling under microwave radiation. The semicoke that is not suitable for recycling can also be returned to field directly or in the form of a compound fertilizer after being mixed with fertilizer to improve soil carbon sink and enhance soil fertility. Compared with other processes, the method has the advantage of high synthesis gas conversion rate improved by about 10%; the prepared synthesis gas has wide applications and can be used for synthesizing chemical products such as ammonia, dimethyl ether, fertilizer and the like. The method can realize the resource poly-generation comprehensive utilization of biomass.

Description

technical field [0001] The invention relates to a method and device for comprehensive utilization of biomass polygeneration, which not only realizes the directional conversion of biomass to synthesis gas, but also comprehensively utilizes semi-coke generated by microwave pyrolysis and synthesis gas produced by microwave reforming. A new way of resource utilization of biomass is proposed. Background technique [0002] Biomass energy has always been an important energy source for human survival, and it is very likely to become an important part of sustainable energy in the future. Pyrolysis is a way of thermochemical conversion of biomass and one of the important ways to produce biomass alternative fuels. It can convert all biomass energy into gas-liquid-solid energy products, so it has received extensive attention from all over the world. Syngas rich in hydrogen and carbon monoxide plays an extremely important role in the chemical industry and is widely used, such as ammonia...

Claims

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Application Information

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IPC IPC(8): C10J3/66C10J3/62C10J3/84C10J3/72C10L5/44C10B53/02C10B23/00B01J20/20C05D9/00C05G1/00
CPCY02E50/30Y02E50/14Y02E50/10Y02P20/52
Inventor 马春元宋占龙李龙之赵希强
Owner SHANDONG UNIV
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