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Low emission type circulating fluidized bed boiler

A circulating fluidized bed and emission-type technology, which is applied in the direction of fluidized bed combustion equipment, emission prevention, combustion type, etc., can solve the problems of large footprint, high operating cost, and low removal efficiency, so as to reduce emissions, The effect of eliminating oxygen-poor areas and uniform distribution

Active Publication Date: 2017-11-14
哈尔滨红光锅炉总厂有限责任公司
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Problems solved by technology

[0003] The present invention solves the problems of low desulfurization and denitrification equipment in the environmental protection device outside the furnace of the existing circulating fluidized bed boiler, and provides a low-emission circulating fluidized bed boiler

Method used

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  • Low emission type circulating fluidized bed boiler
  • Low emission type circulating fluidized bed boiler
  • Low emission type circulating fluidized bed boiler

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Embodiment Construction

[0032] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] see Figure 1-Figure 3 Explain that the low-emission circulating fluidized bed boiler adopting furnace desulfurization and low-nitrogen combustion technology includes a separator 31, a feeder 33, a furnace 36, a coal feeding device 37, a primary air chamber 38, a secondary air box 39, and a high-temperature province. Coal device 22 and low-temperature economizer 18; separator 31 is connected to furnace 36 through feeder 33, coal feeding device 37 and secondary air box 39 are installed at the bottom of furnace 36, primary air chamber 38 is arranged at the bottom of furnace 36; The outlet of the furnace 36 is connected to the inlet of the separator 31, and the outlet of the separator 31 is connected to the tail flue, and a high-temperature economizer 22 and a low-temperature economizer 18 are sequentially arrange...

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Abstract

The invention discloses a low emission type circulating fluidized bed boiler and relates to a circulating fluidized bed boiler, in particular to a low emission type circulating fluidized bed boiler adopting an in-furnace desulfurization and low nitrogen combustion technology in order to solve the problems than in an out-furnace environment-friendly device of an existing circulating fluidized bed boiler, desulfurization and denitration equipment is in low removal efficiency, high in running cost and large in floor space. The low emission type circulating fluidized bed boiler comprises a separator, a refeeder, a hearth, a coal feeding device, a primary air chamber, a secondary air bellow, a high temperature coal economizer and a low temperature coal economizer; the coal feeding device and the secondary air bellow are installed on the lower portion of the hearth; the primary air chamber is arranged at the bottom of the hearth; in a tail flue, the high temperature coal economizer and the low temperature coal economizer are sequentially arranged from top to bottom; and the ratio of the width of the primary air chamber to the width of the hearth is 0.4-0.5. According to the low emission type circulating fluidized bed boiler, the initial super-low emission of the boiler is adopted by adopting the in-furnace desulfurization and low nitrogen combustion technology, 'out-furnace treatment' is converted into 'in-furnace emission reduction', and pollutant generation is controlled from the source.

Description

technical field [0001] The invention relates to a circulating fluidized bed boiler, in particular to a low-emission circulating fluidized bed boiler adopting furnace desulfurization and low-nitrogen combustion technologies. Background technique [0002] Circulating fluidized bed combustion technology has developed rapidly due to its high efficiency and environmental protection performance. With the increasingly strict and perfect environmental protection and the implementation of new boiler air pollutant emission standards, the development of low-emission circulating fluidized bed boilers has been accelerated. development and application. The existing circulating fluidized bed boiler reduces the original emission by arranging an environmental protection device outside the boiler to solve the problem that the original environmental protection emission at the boiler outlet is not up to standard, and the desulfurization and denitrification equipment in the environmental protect...

Claims

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Application Information

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IPC IPC(8): F23C10/10F24H1/22F23C10/18F23J15/02F23C10/20F23M5/08
CPCF23C10/10F23C10/18F23C10/20F23J15/02F23M5/08F24H1/22F23J2215/20F23J2215/10
Inventor 张福强
Owner 哈尔滨红光锅炉总厂有限责任公司
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