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
CN101706109BActive Publication Date: 2013-02-06XI AN JIAOTONG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2013-02-06

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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.
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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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