Alternate combustion typeheat storage radiant tube burner apparatus
A technology of alternating combustion and combustion devices, which is applied in the direction of combustion type, burner, combustion chamber, etc., can solve the problems such as the increase of nitrogen oxide concentration, and achieve the effect of reducing the concentration of nitrogen oxide and forming reliably
Inactive Publication Date: 2006-03-29
日本锅炉株式会社 +1
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Problems solved by technology
[0004] However, in the practical test of the radiant tube combustion device with this structure, the concentration of nitrogen oxides in the combustion exhaust increased according to the posture and direction of the radiant tube combustion device.
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[0044] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0045] The structure of the combustion device
[0046] As shown in FIG. 1 , an alternate combustion type regenerative type radiant tube combustion device (hereinafter referred to as "combustion device") is equipped with a radiant tube 14 forming a main combustion chamber 4 . Combustion units 15 are arranged at both ends of the pipe 14 . The four-way valve 19 is connected to the combustion unit 15 so as to selectively connect the combustion unit 15 to the air supply system or the exhaust system. Each combustion unit 15 is provided with a heat accumulator 13 made of ceramics having a honeycomb structure. The fuel supply path 17 and the primary air flow path 18 of the combustion unit 15 penetrate the thermal storage body 13 . The paired combustion units 15 can mutually switch the operation forms shown in FIG. 1(A) and FIG. 1(B) at predeterm...
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An alternate combustion type regenerative radiant tube burner apparatus capable of supplying pre-heated secondary combustion air to a main combustion chamber through opening parts in a circular plate disposed between a burner unit and the main combustion chamber, comprising the circular plate (10), an annular air throat part (2), a cylindrical outer peripheral cover (30), and heat exchanger tubes (11, 16). The front end part of the outer peripheral cover is formed integrally with the outer edge part of the annular plate to prevent the secondary combustion air in the air throat part from leaking to an air diluting chamber (3) through the outer periphery of the circular plate, whereby surely preventing the nitrogen oxide concentration of burned exhaust gas from being increased without being affected by the requirements for installation and thermal deformation of the radiant tube burner apparatus.
Description
technical field [0001] The present invention relates to an alternate combustion type regenerative radiant tube combustion device, and more specifically relates to a configuration in which a circular plate is arranged between the burner unit and the combustion chamber, and the preheated secondary combustion air is sent through the opening of the circular plate. Alternative combustion regenerative type radiant tube combustion device to the combustion chamber. Background technique [0002] As heating devices such as steel heating furnaces and heat treatment furnaces, radiant tube combustion devices that indirectly heat the environment in the furnace are actually used. As one type of radiant tube combustion device, an alternate combustion type heat storage type radiant tube combustion device having heat storage bodies having a honeycomb structure at both ends thereof is disclosed. (JP-A-8-247421, JP-A-11-108315, JP-11-108316, USP 6027333). [0003] In conventional alternate co...
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IPC IPC(8): F23C3/00F23L15/02F23D14/12F23D14/22
CPCF23C3/002F23L15/02F23D14/22Y02E20/34F23C13/00F24H1/0045F24H1/41F23D2213/00
Inventor 长谷川敏明多田健持田晋北原慎也福岛信一郎铃川丰菅政治森功大石均石冈宗浩
Owner 日本锅炉株式会社