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Low-nitrogen environment-friendly circulating fluidized bed hot water boiler

A circulating fluidized bed and hot water boiler technology, which is applied to fluidized bed combustion equipment, fluid heaters, water heaters, etc., can solve the problems of high energy consumption, low separation efficiency, and high NOx emissions, and improve separation efficiency , Improve heat transfer effect, reduce the effect of NOx generation

Pending Publication Date: 2021-06-22
WUXI HUAGUANG BOILER
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low separation efficiency, high energy consumption and high NOx emission of existing circulating fluidized bed hot water boilers, the present invention provides a low-nitrogen environment-friendly circulating fluidized bed hot water boiler, which can improve separation efficiency and reduce energy consumption. consumption and NOx emissions

Method used

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  • Low-nitrogen environment-friendly circulating fluidized bed hot water boiler
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  • Low-nitrogen environment-friendly circulating fluidized bed hot water boiler

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Embodiment Construction

[0017] See figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 As shown, a low-nitrogen environment-friendly circulating fluidized bed hot water boiler includes a furnace 1, a separator 2, and a tail flue 6. The bottom of the separator 2 is provided with a return device 4 connected to the furnace 1, and the return device 4 is arranged The three air chambers are respectively connected with the loosening wind, conveying wind and material returning air, which play the role of loosening, conveying and material returning in sequence. The material returning air cap and the connecting pipe in the material returning device are welded to avoid the head of the air cap falling off during operation. A coal feeding device is provided on the hearth that causes poor material return. The bottom of the furnace 1 is provided with an air distribution plate 7 and an ignition device 8 , an economizer 4 and an air preheater 5 are installed in the tail flue 6 , a primary hot air...

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Abstract

The invention belongs to the field of boiler equipment, and particularly relates to a low-nitrogen environment-friendly circulating fluidized bed hot water boiler which can improve separation efficiency and reduce energy consumption and NOx emission. The low-nitrogen environment-friendly circulating fluidized bed hot water boiler comprises a furnace, two separators and a tail flue, wherein material returning devices communicating with the furnace are arranged at the bottoms of the separators; the furnace is provided with a coal feeding device; an air distribution plate and an ignition device are arranged at the bottom of the furnace; an economizer and an air preheater are arranged in the tail flue; a primary hot air access opening is formed in the side part of the ignition device; a flaring area and a buffer area are arranged at the front end of the ignition device; the buffer area covers all air chambers below the air distribution plate; central cylinders of the two separators are both eccentrically arranged; volutes of the separators incline downwards; inlet flues of the separators are arranged from wide to narrow in the air inlet direction; the economizer consists of at least two rows of economizer tubes; every two adjacent rows of economizer tubes are arranged in a staggered manner; and the economizer tubes in the same row are arranged in an aligned manner.

Description

technical field [0001] The invention belongs to the field of boiler equipment, and in particular relates to a low-nitrogen environment-friendly circulating fluidized bed hot water boiler. Background technique [0002] With the increasingly stringent national environmental protection policy, the previous circulating fluidized bed hot water boiler technology can no longer meet the environmental protection requirements. The old technology has disadvantages such as low separator separation efficiency, high bed temperature, high NOx emission, high coal consumption, etc., which cannot meet the requirements of existing enterprises. Contents of the invention [0003] In order to solve the problems of low separation efficiency, high energy consumption and high NOx emission of existing circulating fluidized bed hot water boilers, the present invention provides a low-nitrogen environment-friendly circulating fluidized bed hot water boiler, which can improve separation efficiency and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/10F23C10/18F23C10/20F23C10/22F23C10/26F23L1/00F23L15/00F23M5/08F24H9/00F24H1/22
CPCF23C10/10F23C10/18F23C10/20F23C10/22F23C10/26F23L1/00F23L15/00F23M5/08F24H1/22F24H9/0005Y02E20/34
Inventor 景磊毛军华陆晓焰周翔夏胜
Owner WUXI HUAGUANG BOILER
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