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Deep-graded surface water cooling partially-premixed gas furnace

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

Active Publication Date: 2021-03-26
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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  • Deep-graded surface water cooling partially-premixed gas furnace
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  • Deep-graded surface water cooling 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] Such as 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 f...

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Abstract

A deep-graded surface water cooling partially-premixed gas furnace comprises a hearth, wherein a water cooling combustor is arranged at the position of an inlet of the hearth, an annular air supply pipeline is arranged in a burnout area in the hearth, and a reverse flow combustion chamber is arranged at the position of an outlet of the hearth. The deep-graded surface water cooling partially-premixed gas furnace forms oxygen-poor partially-premixed low-temperature surface combustion and oxygen-enriched afterburning, generation of nitric oxides during gas fuel combustion is lowered, and it is guaranteed that gas fuel combustion is clean, uniform, stable and efficient; and meanwhile gas fuel is fully combusted, and therefore the operation economical efficiency of a boiler is guaranteed.

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...

Claims

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Application Information

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Patent Type & Authority Applications(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惠世恩
Owner XI AN JIAOTONG UNIV
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