Residual heat reclaiming apparatus for boiler vent gas

A waste heat recovery device and tail gas technology, applied in steam separation devices, indirect heat exchangers, lighting and heating equipment, etc., can solve the problem of low heat recovery and utilization rate of flue gas and tail gas, and achieve small flow resistance, compact equipment structure, The effect of high heat transfer efficiency

Inactive Publication Date: 2009-08-05
石狮市亿祥染整有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a boiler tail gas waste heat recovery device, which solves the technical problem that the existing flue gas tail gas heat recovery utilization rate is not high

Method used

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  • Residual heat reclaiming apparatus for boiler vent gas

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Embodiment Construction

[0008] The boiler tail gas waste heat recovery device uses the evaporation and condensation of the working fluid to transfer heat, pumps the inner side of the heat pipe to a higher degree of vacuum and fills it with an appropriate amount of working fluid such as liquid metal, so that the capillary porous material of the liquid-absorbing core close to the inner wall of the heat pipe Sealed after being filled with liquid. The whole device consists of two parts: heat pipe steam generator and steam-water separation device (steam drum).

[0009] Among them, the high-temperature heat pipe uses liquid metal (sodium, potassium, etc.) as the working medium. Because liquid metal has good thermal stability and very low saturated vapor pressure, such as sodium at 800 ° C, the saturated vapor pressure is only 0.047MPa; so Under high temperature conditions, the liquid metal high temperature heat pipe hardly withstands internal pressure and can work safely under high temperature conditions. ...

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Abstract

The invention provides a boiler end-gas waste-heat recovering device which comprises a steam generator and a steam-water separating device, wherein the steam generator comprises a box body, a plurality of heat pipes and sleeve pipes with the number corresponding to the number of the heat pipes; the box body is of a hollow structure, and is provided with an air inlet and an air outlet; one end of each heat pipe is respectively vertically arranged in the inner side of the box body; the other end of each heat pipe is respectively positioned above the box body; each heat pipe is of a sealing hollow structure; liquid absorption materials are fixed on the inner side wall of the heat pipe; proper amount of liquid metal is filled in the heat pipes; the outer side wall of each heat pipe positioned on the outer side of the box body is respectively provided with the sleeve pipe; the upper end and the lower end of each sleeve pipe are respectively communicated with the steam-water separating device; and saturated water is filled in each sleeve pipe. The invention is mainly used for heat recovering recycle of smoke gas and the end gas of a boiler.

Description

technical field [0001] The invention relates to a waste heat recovery device for boiler heat tail gas, which is used for recycling boiler flue gas tail gas. Background technique [0002] my country is a developing country with a low level of comprehensive utilization of energy. Since the early 1980s, the focus of research and development on boiler thermal efficiency has shifted to energy conservation and rational utilization of energy, and a series of exhaust gas recovery devices have been developed successively. For example, the Chinese patent CN2329860Y announced on July 21, 1999 discloses a boiler coal preheating device, which consists of a coal hopper and a flue. There are tail gas outlets and tail gas inlets in the middle of the front and back of the outer layer of the coal scuttle shell, and the flue is composed of the tail gas recovery flue and the tail gas discharge flue. The coal is preheated, and then the exhaust gas is sent out from the exhaust flue through the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B1/18F22B37/26F28D15/02
Inventor 曾国平
Owner 石狮市亿祥染整有限公司
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