Natural gas hydrogen-doped combustion system and method capable of adjusting fuel mixing ratio
A combustion system and fuel mixing technology, applied in combustion methods, gas fuel burners, and fuel supply regulation, etc., can solve problems such as excessive emission of polluting gases, and achieve the effect of full-load environmental protection emissions
Pending Publication Date: 2022-01-04
XIAN TPRI BOILER ENVIRONMENTAL PROTECTION ENG CO LTD
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Problems solved by technology
During the actual operation of gas-fired boilers, as the load changes, the concentration of polluting gases changes, and the emission of polluting gases exceeds the standard when operating at low loads. This problem needs to be solved urgently
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[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0032] The present invention can carry out the mixing of two fuels of natural gas and hydrogen at a specified ratio when the gas boiler is running at variable loads, and at the same time can perform dynamic tracking control according to the data of nitrogen oxides and carbon dioxide concentrations in the flue gas fed back to the PLC control system , dynamically adjust the mixing ratio of the two fuels, so that the mixed fuel is sent to the gas burner for full combustion, and the amount of polluted gas generated meets or exceeds the environmental protection emission requirements. The invention realizes full-load environmental protection emission of the gas boiler by means of optimized operation and other means .
[0033] Such as figure 1 As shown, the natural gas hydrogen-mixed combustion system with adjustable fuel mixing ratio of the present...
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The invention discloses a natural gas hydrogen-doped combustion system and method capable of adjusting the fuel mixing ratio. A natural gas main pipeline system and a hydrogen main pipeline system are the same in structure; each of the natural gas main pipeline system and the hydrogen main pipeline system comprises an air compressor, a check valve and a flow regulating valve which are sequentially connected through a pipeline, a flow meter is arranged at an outlet of the flow regulating valve, the air compressor, the flow regulating valve and the flow meter are all connected with a PLC control system; outlets of the natural gas main pipeline system and the hydrogen main pipeline system are connected with an inlet of a mixed flow combustion system; and a flue gas pollutant concentration detection unit is connected with the PLC control system. The system can mix two kinds of fuel including natural gas and hydrogen in a specified ratio, and can dynamically adjust the mixing ratio of the two kinds of fuel according to data of concentrations of nitrogen oxides and carbon dioxide in flue gas fed back to the PLC control system, so that the mixed fuel is fed to a gas burner for sufficient combustion, and the pollution gas generation amount meets or is superior to the environment-friendly emission requirement.
Description
technical field [0001] The invention belongs to the technical field of natural gas hydrogen-doped combustion systems, and in particular relates to a natural gas hydrogen-doped combustion system and method with adjustable fuel mixing ratio. Background technique [0002] As clean energy, natural gas and hydrogen are continuously increasing in energy consumption, and they are replacing coal in power generation, heating and other fields. Increasing the application ratio of hydrogen energy in energy consumption can effectively deal with global climate change and reduce carbon emissions. However, because there are still many technical difficulties in the large-scale utilization of pure hydrogen, it is still in the stage of applying hydrogen in blending combustion. The application of clean energy with natural gas mixed with hydrogen is an effective solution for the transition from fossil energy to pure hydrogen energy. [0003] Compared with all natural gas, the emissions of nitr...
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IPC IPC(8): F23D14/46F23D14/62F23N1/00G01N33/00
CPCF23D14/46F23D14/62F23N1/00G01N33/0004F23D2203/007Y02A50/20
Inventor 鲁芬何浩梁双轨周飞李文锋李楠邹小刚车宏伟申冀康
Owner XIAN TPRI BOILER ENVIRONMENTAL PROTECTION ENG CO LTD