Combusting device for low nitrogen combustion of classification pre-mixed swirling flow

A combustion device and low-nitrogen combustion technology, applied in the direction of burners, combustion chambers, combustion methods, etc., can solve problems such as incomplete combustion, technical effects that cannot achieve environmental protection, and uneven mixing of gas and air

Active Publication Date: 2016-07-06
陈维汉
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Looking at the conventional burners currently used in various industrial furnaces, it is obvious that there are various structural problems caused by design concept problems, which will inevitably lead to uneven mixing between gas and air and incomplete combustion
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Method used

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  • Combusting device for low nitrogen combustion of classification pre-mixed swirling flow
  • Combusting device for low nitrogen combustion of classification pre-mixed swirling flow

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Embodiment Construction

[0008] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0009] like figure 1 and figure 2 As shown, the structure of the present invention is that the cylinder body 1 of the combustion device is composed of four tube bodies that are concentrically set together in a stepped shape from the inside to the outside, forming a central channel and three annular channel structures. Outside the center of the central tube, the outer ends of the other three tubes are closed. The outermost annular channel among the three annular channels is the air annular channel 5, and there is a connected air channel on the outer wall near the closed end of the air annular channel. Inlet pipe 2, an air swirl support sheet 8 is arranged in the outlet section of the air annular channel; the innermost annular channel among the three annular channels is the auxiliary air ring channel 7, and there is a wall near ...

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Abstract

The invention relates to a combusting device for low nitrogen combustion of a classification pre-mixed swirling flow, and effectively realizes the combustion purposes of classification pre-mixed combustion, flame stabilization combustion and temperature control combustion among coal gas, air, auxiliary air, and steam. Four pipe bodies are mounted in a stepped sleeving manner; an air inlet pipe is arranged at the closed end of an outer layer air annular passage; an auxiliary air inlet pipe is arranged at the closed end of an inner layer auxiliary air annular passage; a coal gas annular passage is arranged at the middle, and a coal gas inlet pipe is arranged at the closed end of the coal gas annular passage; swirling flow supporting pieces are separately arranged in outlet sections of the passages; centers of the four pipe bodies are steam passages; a pre-mixed pre-combustion chamber communicating with a combustion gas flow outlet is arranged in the outer pipe body; a conic bluff body with a contracted duct in the center is arranged at the outlet of the auxiliary air annular passage. According to the combustion device disclosed by the invention, the generation of nitrogen oxides during the combustion process is effectively controlled, the combustion temperature is reasonably controlled, and the emission capacity of the nitrogen oxides is effectively reduced; therefore, the fuel is saved, the investments are saved, and pollution to atmospheric environment is reduced.

Description

technical field [0001] The invention relates to a combustion device for heat utilization equipment of industrial furnaces and kilns, and is especially suitable for a combustion device for staged premixed swirling low-nitrogen combustion used in boilers and heating furnaces (or hot blast stoves) burning gas fuel. Background technique [0002] At present, in consideration of energy saving and environmental protection, industrial furnaces require combustion devices to achieve efficient and controllable complete combustion under different fuels and different gases, and at the same time, it is also required to effectively reduce the formation of nitrogen oxides (NOx) during the combustion process. amount, in order to achieve the ultimate goal of high efficiency, energy saving and environmental protection. For this reason, in addition to achieving fast and uniform mixing and stable combustion in the structure of industrial furnace burners, it should also be able to adapt to differ...

Claims

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Application Information

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IPC IPC(8): F23D14/02F23D14/46F23D14/62F23C3/00F23C7/00
CPCF23C3/006F23C7/002F23D14/02F23D14/46F23D14/62
Inventor 陈维汉陈云鹤杨海涛张佳鹏
Owner 陈维汉
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