A Depth Grading Surface Water Cooled Partially Premixed Gas Furnace

A gas furnace and water-cooling technology, applied in the direction of burners, combustion types, combustion methods, etc., can solve problems such as gaps, achieve the effects of reducing oxygen partial pressure, ensuring economy, and reducing possibilities

Active Publication Date: 2021-10-19
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] At present, there has been some progress in low-nitrogen combustion technology for gas equipment in China, such as lean oxygen combustion, oxygen-enriched combustion, thick-lean combustion, flue gas recirculation, etc. x Emissions have a certain inhibitory effect, but there is still a certain gap between the actual industrial application effect and foreign technology

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  • A Depth Grading Surface Water Cooled Partially Premixed Gas Furnace
  • A Depth Grading Surface Water Cooled Partially Premixed Gas Furnace
  • A Depth Grading Surface Water Cooled Partially Premixed Gas Furnace

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] like Figure 1-Figure 3 Shown: In the present invention, the depth of the furnace air is graded, coupled with the surface water-cooled part of the premixed combustion, so that the gas fuel forms oxygen-poor low-temperature surface combustion in the gas device and oxygen-enriched supplementary combustion step by step, which effectively reduces the nitrogen oxidation generated during the combustion of the gas fuel. At the same time, ensure the complete combustion of gas fuel and ensure the economical operation of the boiler. Its main structure is that the mixed gas inlet is provided with an anti-tempering intake microchannel 9, and the cross-sectional size of the gradually expanding gas channel 8 gradually increases along the direction of flame propagation, and the high and low cooling components 10a and 10b on both sides are arranged alternately to form...

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Abstract

A depth graded surface water-cooled partly premixed gas furnace includes a furnace, a water-cooled burner is arranged at the entrance of the furnace, an annular air supply pipe is arranged in the burnout area inside the furnace, and a combustion chamber is arranged at the outlet of the furnace. The invention forms premixed low-temperature surface combustion and oxygen-enriched supplementary combustion of oxygen-poor parts, reduces the generation of nitrogen oxides during gas fuel combustion, and ensures clean, uniform, stable and efficient combustion of gas fuel; at the same time, full combustion of gas fuel ensures economical operation of the boiler sex.

Description

technical field [0001] The invention relates to the technical fields of gas power equipment and environmental protection, in particular to a premixed gas furnace with a depth-graded surface water-cooled part. Background technique [0002] In today's world energy consumption structure, natural gas consumption accounts for about 23.8% of the global primary energy consumption, known as "bridge energy". According to "BP World Energy Outlook 2019", the world's natural gas demand will account for 2040 About 26% of demand. Compared with traditional fossil fuels such as coal and oil, the combustion of natural gas does not produce environmental pollutants such as sulfur oxides and dust. Under the condition of providing the same heat, natural gas combustion produces 40% less greenhouse gases than coal, which alleviates the greenhouse gas Compared with traditional fossil fuels, it is more in line with the "green and low-carbon" economy proposed by my country. However, during the combu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/02F23D14/46F23D14/62F23D14/78F23L5/04
CPCF23D14/02F23D14/46F23D14/62F23D14/78F23L5/04Y02E20/34
Inventor 康亚倩牛艳青薛旭峰
Owner XI AN JIAOTONG UNIV
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