Catalytic cracker of biomass tar

A technology for catalytic cracking and biomass, applied in the field of biomass tar catalytic cracking devices, can solve the problems of affecting the catalytic cracking effect of tar, affecting the normal operation of the blower, and high tar yield, and improving the biomass gasification rate and gas calorific value. , the effect of increasing biomass gasification time and reducing tar yield

Inactive Publication Date: 2007-09-05
HEFEI UNIV OF TECH
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Problems solved by technology

"Although this invention increases the temperature of the catalyst bed and improves the tar cracking rate, a large amount of cold air passes through the catalyst bed, which affects the catalytic cracking effect of tar; when the gas containing tar passes through the blower, tar condensation and adhesion will occur, affecting the normal operation of the blower. Operation; cold air directly enters the gasifier, so that the temperature in the combustion zone is not high, the pyrolysis gas has not been cracked at high temperature, and the tar yield is high; the device is more complicated and less practical

Method used

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  • Catalytic cracker of biomass tar
  • Catalytic cracker of biomass tar

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Embodiment Construction

[0029] In this embodiment, the integration of biomass gasification and tar cracking is set. As shown in Figures 1 and 2, a cylindrical furnace body 1 is adopted, and a serpentine internal combustion pipeline 2 is arranged inside the cylindrical furnace body 1, and the entrance of the serpentine internal combustion pipeline 2 is located at the lower part of the cylindrical furnace body 1 , the outlet extends from the top of the cylindrical furnace body 1 to the outside of the furnace body, and the igniter 3 is located at the entrance of the internal combustion pipeline 2;

[0030] Above the cylindrical furnace body 1, a screw feed mechanism 4 is arranged, and the screw feed port is located at the top eccentric position of the cylindrical furnace body 1, and on the central axis position of the cylindrical furnace body 1, a The stirring shaft 6 of the stirring blade 5 is provided with a multi-layer baffle 7 along the circumferential surface of the side wall on the inner side wall...

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Abstract

A biomass tar catalytic cracker adopts cylindrical furnace body with conical bottom, jacket structure is arranged at side wall, which consists of high-temperature-resisting furnace wall, gas channel, catalyst bed, thermal-insulating layer and furnace external wall; rectifier board is arranged at bottom of cylindrical furnace body as entrance, exit on top of gas channel leads to catalyst bed by topped filter net, gas-outputting opening is placed at bottom of catalyst bed, and gas pipeline is connected with gas cabinet by induced draft fan. It has high cracking efficiency and prevents tar adhesion and block in gas pipeline system.

Description

technical field [0001] The invention relates to a biomass tar catalytic cracking device. Background technique [0002] Biomass is a kind of renewable energy with abundant reserves, which can be used as an alternative energy source to achieve CO 2 Zero emission, and the low content of S and N in it can greatly reduce the greenhouse effect and environmental pollution. [0003] Aiming at the problem that the gas formed by biomass gasification contains a lot of tar, there are currently two solutions: one is water washing treatment, and the tar in the gas is transferred to the aqueous solution. Although this method is simple, the purification efficiency of the gas is also high. Higher, but will produce a large amount of tar-containing wastewater, which is difficult and costly to treat, causing secondary pollution, and will affect the efficient operation of the gasification system, which will eventually lead to higher gas costs, which is not conducive to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00
Inventor 陈天虎朱承柱彭书传何宏平
Owner HEFEI UNIV OF TECH
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