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Combustor and a central backdraft boiler comprising same

A burner, gas technology, applied in burners, gas fuel burners, combustion methods, etc., can solve problems such as increased smoke exhaust, high oxygen content, and reduced thermal efficiency

Pending Publication Date: 2019-04-23
上海迎韦热能设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a burner and its Central backfiring boiler

Method used

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  • Combustor and a central backdraft boiler comprising same
  • Combustor and a central backdraft boiler comprising same
  • Combustor and a central backdraft boiler comprising same

Examples

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Embodiment Construction

[0044] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples.

[0045] Such as figure 1 and figure 2 As shown, the present invention provides a burner, which includes six gas nozzles 1 , and the end of each gas nozzle 1 has a first injection port 11 and a second injection port 12 . Among them, the first injection port 11 is arranged along the length direction A of the gas nozzle 1 for directly injecting gas to the front of the burner, while the second injection port 12 is arranged along the length direction perpendicular to the gas nozzle 1 A is provided, and an air outlet B that provides air to the second injection port 12 is also provided at the position where the burner is located around the gas nozzle 1 . The second injection port 12 is also arranged towards the direction of the air outlet B, so that the gas injected perpendicular to the length direction A of the gas nozzle 1 is mix...

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Abstract

The invention discloses a combustor and a central backdraft boiler comprising the same. The combustor comprises a fuel gas spray tube, wherein a first jet orifice is formed in the tail end of the fuelgas spray tube and is formed in the length direction of the fuel gas spray tube; a second jet orifice is further formed in the tail end of the fuel gas spray tube; the combustor is provided with an air outlet formed in the periphery of the fuel gas spray tube and capable of providing the air for the second jet orifice; and the second jet orifice is formed in the direction perpendicular to the length direction of the fuel gas spray tube and is towards the air outlet, so that the fuel gas sprayed out of the direction perpendicular to the length direction of the fuel gas spray tube is mixed withthe air in the air outlet and burns. The combustor adopts layered and segmented fuel arrangement and supply manner at the jet orifices to avoid the situation that local fuel is excessive; in addition, a uniform fuel and air mixture is formed before reaching the ignition point, so that the combustor can have graded combustion and local oxygen-enriched combustion to reduce the flame temperature, reduce generation of heating power type NOX, and the overall thermal efficiency is high.

Description

technical field [0001] The invention relates to a burner and a central back-fired boiler containing the burner. Background technique [0002] For the air pollution that often occurs in many places across the country, the main source of pollution is NO X , NO X Combined with water in the air, it will eventually be converted into nitric acid and nitrate. Nitric acid is one of the causes of acid rain; it and other pollutants can produce photochemical smog pollution under certain conditions, which has direct and potential harm to the body. Due to the improvement of national policies on emission requirements and the large number of applications of various gas-fired boilers, environmental protection policies have been introduced in various places, requiring boilers to meet low NO X Exhaust emissions, center backfired boilers are no exception. [0003] For the central backfired boiler, because the end of the combustion chamber is a closed structure, metal fiber premixed burners ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/24F23D14/58F23D14/46F23D14/70
CPCF23D14/24F23D14/46F23D14/58F23D14/70Y02E20/34
Inventor 李顺荣孙玉东胡飞张连喜
Owner 上海迎韦热能设备有限公司
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