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Embedded deep cooler for boiler flue gas

A boiler flue gas, deep cooling technology, applied in feed water heaters, preheating, steam generation, etc., can solve problems such as high exhaust gas temperature and increased water consumption of desulfurization towers, achieve high heat transfer efficiency, improve uniformity, compact effect

Active Publication Date: 2013-02-06
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Failure to install a flue gas heat exchange device will inevitably result in higher exhaust gas temperature and increased water consumption of the desulfurization tower

Method used

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  • Embedded deep cooler for boiler flue gas
  • Embedded deep cooler for boiler flue gas
  • Embedded deep cooler for boiler flue gas

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Embodiment Construction

[0024] The structural principle and working principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] like figure 1 , figure 2 As shown, the present invention is arranged between the electrostatic precipitator and the flue gas desulfurization tower. The tower inlet flue is through-connected.

[0026] The present invention comprises a housing 11, the side of the housing 11 close to the inlet flue is a high-temperature section, and the side close to the outlet flue is a low-temperature section, and the flue gas partitions 4 and 16 divide the inner cavity of the housing 11 into an upper flue compartment 12 1. The flue in the middle and the flue compartment 15 in the lower part, the support plate 6 for supporting the first and second finned tube bundles 5, 5' is arranged in the flue; the high temperature section includes the inlet header 8 of the high temperature section, and the inlet The header 8 is connected...

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Abstract

The invention discloses an embedded deep cooler for boiler flue gas, which comprises a shell 11; the side close to an inlet flue in the shell 11 is a high temperature section, and the side close to an outlet flue is a low temperature section; and flue clapboards 14 and 16 divide an inner cavity of the shell 11 into an upper flue compartment 12, a middle flue and a lower flue compartment 15. The embedded deep cooler performs deep cooling on boiler flue gas, effectively recovers afterheat of the boiler flue gas, reduces the temperature of flue gas at an inlet of a desulfurizing tower, reduces water consumption of the desulfurizing tower, improves the boiler efficiency and desulfurization efficiency, and achieves the aims of saving energy, improving efficiency and saving water resource.

Description

technical field [0001] The invention belongs to a waste heat recovery device in the technical field of thermal energy engineering, and in particular relates to an embedded flue gas deep cooler, which can be applied to industrial boilers and power station boilers. Background technique [0002] According to statistics, the exhaust gas temperature of general boilers is around 130-140°C. If high-sulfur fuel is used, the exhaust gas temperature will reach about 150°C; if a heater is installed before the air preheater, the boiler exhaust gas temperature can even reach 160-180°C. Generally, every 10°C reduction in boiler exhaust gas temperature can increase boiler efficiency by 0.6% to 1.0%. Taking a 600MW unit as an example, if boiler efficiency increases by 0.6% to 1.0%, coal can be saved by 1.15 to 1.91 tons per hour. It can be seen that the recovery and utilization of waste heat from boiler exhaust has great potential and can bring huge economic benefits to power plants. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23J15/06F22D1/00
Inventor 赵钦新张建福姜尚旭王云刚王海超张知翔
Owner XI AN JIAOTONG UNIV
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