Forced water circulation high-capacity hot water boiler of circulating fluidized bed

A technology of circulating fluidized bed and hot water boiler, which is applied to fluidized bed combustion equipment, water heater, fluid heater, etc., can solve the problems of unsafe water circulation system, excessive resistance of water system, complicated water circulation system, etc. Achieve the effect of preventing the blockage of the returned material from causing shutdown, stable long-term operation, and reducing the failure rate of the returned material

Active Publication Date: 2014-03-19
哈尔滨红光锅炉总厂有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water circulation system of the existing large-capacity circulating fluidized bed hot water boiler is complicated, the water resistance is large, and the water circulation system is unsafe. The excessive resistance of the water system will also increase the power consumption

Method used

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  • Forced water circulation high-capacity hot water boiler of circulating fluidized bed
  • Forced water circulation high-capacity hot water boiler of circulating fluidized bed
  • Forced water circulation high-capacity hot water boiler of circulating fluidized bed

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specific Embodiment approach 1

[0012] Specific implementation mode one: combine Figure 1 to Figure 5 Describe this embodiment, this embodiment includes water supply distribution header 1, lower economizer 2, middle economizer 3, upper economizer 4, economizer upper header 5, economizer coating pipe 6, collection Water bag 7, downpipe 8, water wall lower header 9, furnace water wall 10, water wall upper header 11, outlet pipe 12, drum 13, connecting pipe 14, water cooling jacket water inlet pipe 15, separator water cooling jacket 16 , water cooling jacket outlet pipe 17, power failure water supply pipe 18, one water outlet end of the water distribution header 1 is connected to the lower economizer 2, the lower economizer 2 is connected to the middle economizer 3, and the middle economizer 3 is connected to the upper economizer The economizer 4 is connected, the water outlet end of the upper economizer 4 is connected with the economizer upper header 5, and the economizer upper header 5 is connected with the ...

specific Embodiment approach 2

[0018] Specific implementation mode two: combination figure 1 To illustrate this embodiment, valves are installed on the downcomer 8 , the water inlet pipe 15 of the water cooling jacket, the outlet pipe 17 of the water cooling jacket and the power failure water supply pipe 18 of this embodiment. The power failure protection function is realized by closing and opening the valve. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0019] Specific implementation mode three: combination figure 1 This embodiment will be described. The lower economizer 2 , the middle economizer 3 and the upper economizer 4 in this embodiment have variable cross-section structures. After the cross-section is changed, the functions of equal smoke velocity and no ash accumulation are realized, which avoids the problems of increased resistance and increased exhaust gas temperature caused by the ash accumulation of the economizer, and completely solves the problems of ash accumulation, wear and corrosion of the economizer tube. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a forced water circulation high-capacity hot water boiler of a circulating fluidized bed, which relates to a hot water boiler of a fluidized bed, and aims to ensure water circulation safety and power failure protection of a high-capacity hot water boiler of a circulating fluidized bed. A water supply distribution header is connected with lower coal economizers; the lower coal economizers, middle coal economizers and upper coal economizers are sequentially connected with one another; the upper coal economizers are connected with a coal economizer upper header; the coal economizer upper header is connected with a collection water bag by a coal economizer coating pipe; the collection water bag is connected with water cooling wall lower headers by a descending pipe; the water cooling wall lower headers are connected with a hearth water cooling wall; the hearth water cooling wall is connected with water cooling wall upper headers; the water cooling wall upper headers are connected with a boiler cylinder by extraction pipes; the water supply distribution header is connected with a separator water cooling sleeve by a water cooling sleeve water intake pipe; the separator water cooling sleeve is connected with the boiler cylinder by a water cooling sleeve water outlet pipe; the boiler cylinder is connected with the water cooling wall lower headers by communicating pipes, and is connected with the water supply distribution header by a power failure water supply pipe. The forced water circulation high-capacity hot water boiler provided by the invention is applied to large concentrated heat supply and warming.

Description

technical field [0001] The invention relates to a circulating fluidized bed hot water boiler, in particular to a large capacity circulating fluidized bed hot water boiler with forced water circulation. Background technique [0002] The development of central heating has made large-capacity circulating fluidized bed hot water boilers widely used. The existing large-capacity circulating fluidized bed hot water boiler has a complex water circulation system and high water resistance, which makes the water circulation system unsafe. Excessive resistance of the water system will also increase power consumption. This patent can improve the safety of the water circulation of large-capacity circulating fluidized bed hot water boilers, avoid boiler tube burst accidents caused by unreliable water circulation, reduce the power consumption of the boiler water circulation system, and realize the automatic power failure protection function. Contents of the invention [0003] The object ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H1/40F23C10/18
Inventor 张福强吕雪艳魏少波王兆国徐克勤
Owner 哈尔滨红光锅炉总厂有限责任公司
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