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Nitrogen oxide ultralow emission and carbon negative emission system and control method

A nitrogen oxide and emission system technology, applied in the field of energy saving and emission reduction, to achieve the effect of solving low heat load

Active Publication Date: 2022-03-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the use of biomass has been able to achieve zero carbon emissions and low-nitrogen combustion, it is still facing great challenges to achieve low carbon emissions and ultra-low emissions of nitrogen oxides

Method used

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  • Nitrogen oxide ultralow emission and carbon negative emission system and control method

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no. 1 approach

[0041] see figure 1 As shown, the present invention provides a nitrogen oxide ultra-low emission and carbon negative emission system, including: a carbon negative emission system 1, a nitrogen oxide ultra-low emission system 2, an air supply device 3 and a flow control module (not shown in the figure out), wherein, the negative carbon emission system 1 is used to generate inorganic carbon and pyrolysis gas / gasification gas through pyrolysis coupled partial gasification of biomass, and the inorganic carbon is used for returning to the field or making carbon-based materials such as activated carbon to realize Negative emission of carbon; the nitrogen oxide ultra-low emission system 2 removes the fuel generated by fuel combustion by co-combusting fuel (including pure coal fuel, biomass fuel or mixed fuel of biomass and coal) with pyrolysis gas / gasification gas Nitrogen oxides; the air supply device 3 communicates with the carbon negative emission system 1 through the first pipeli...

no. 2 approach

[0115] In the second embodiment of the present invention, what takes place in the pyrolysis coupled partial gasification reaction furnace 13 (taking the fixed bed reactor as an example) is the biomass pyrolysis coupled partial gasification reaction, if the biomass only occurs under an inert gas environment Pyrolysis reaction without partial gasification reaction, the content of reducing gases in gas products will be greatly reduced, especially H 2 and CO content, but the content of inorganic carbon will increase. If low H 2 , CO content of pyrolysis gas can still achieve a high denitrification efficiency, then by controlling the pyrolysis coupling part of the gasification reaction furnace 13 only pyrolysis reaction occurs, while ensuring a high denitrification efficiency, improve the denitrification efficiency of inorganic carbon output, to achieve a greater degree of carbon negative emissions.

[0116] In this embodiment, close the electric butterfly valve 6b on the steam g...

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Abstract

The invention provides a nitrogen oxide ultra-low emission and carbon negative emission system and a control method, the system comprises a carbon negative emission system, a nitrogen oxide ultra-low emission system, an air supply device and a flow control module, the carbon negative emission system is used for making biomass generate inorganic carbon and pyrolysis gas / gasified gas, and negative emission of carbon is achieved; the nitrogen oxide ultra-low emission system is used for performing mixed combustion on fuel and pyrolysis gas / gasified gas to remove nitrogen oxide and realize ultra-low emission of the nitrogen oxide; the air supply device is in gasification communication with the biomass pyrolysis coupling part through a first pipeline, the air supply device is communicated with the carbon negative emission system and the nitrogen oxide ultra-low emission system through a second pipeline, and pyrolysis gas / gasification gas enters the nitrogen oxide ultra-low emission system through the second pipeline; and the flow control module is used for controlling the flow ratio of the pyrolysis agent / gasification agent entering the carbon negative emission system and the flow of pyrolysis gas / gasification gas and air entering the nitrogen oxide ultra-low emission system.

Description

technical field [0001] The invention relates to the technical field of energy saving and emission reduction, specifically a biomass pyrolysis, gasification and combustion combined ultra-low nitrogen oxide emission and carbon negative emission system and control method. Background technique [0002] In recent decades, environmental problems such as the greenhouse effect, glacier melting, acid rain, and photochemical smog have become more and more serious, threatening the safety of human beings and ecosystems, which has a lot to do with the extensive use of coal-based fossil fuels. [0003] Biomass is a kind of renewable energy. Its carbon neutrality and low nitrogen characteristics enable it to achieve zero carbon emissions and low nitrogen oxide emissions during use. The use of biomass to partially replace fossil fuels can To a certain extent, the greenhouse effect, acid rain and other environmental problems can be alleviated. [0004] Although the use of biomass has been a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/00C10J3/82C10J3/84C10B53/02C10B49/02F23K5/00F23C10/20F23C10/22F23C1/04B01D53/74B01D53/56
CPCC10J3/00C10J3/82C10J3/84C10B53/02C10B49/02F23K5/002F23C10/20F23C10/22F23C1/04B01D53/74B01D53/56C10J2300/0916C10J2300/0976C10J2300/0956C10J2300/0909Y02E50/10C10B57/10C10J3/06C10J3/14C10J3/723C10J2300/1207C10J2300/1215C10J2300/1253C10K1/026B01D2251/202B01D2251/204B01D2251/208B01D45/16C10B41/00
Inventor 骆仲泱王寅辰王勤辉余春江周劲松方梦祥
Owner ZHEJIANG UNIV