A MULTI-STAGE EXHAUST HEAT RECOVERY APPARATUS FOR FLUE GASES IN FLUE

WIPO Patent Application WO/2005/022063

A1

This invention discloses an apparatus in which multi stages exhaust heat recovery devices are provided in horizontal flue, or one stage exhaust heat recovery device is provided in vertical flue and one or more stages exhaust heat recovery devices are provided in horizontal flue. The apparatus comprises exhaust heat recovery devices and heat exchanger. The exhaust heat recovery device comprises sprayer, water tank, pump and flue. The sprayer is installed on the top inside the flue, and the water tank is installed at the bottom outside the flue; a partition plate is installed at the joint of the adjacent flues; the water outlet tube of the water tank of the first stage exhaust heat recovery device is connected with the sprayer of the second stage exhaust heat recovery device through the pump. Those stages are connected sequentially. The water outlet tube of the last stage water tank is connected with the water inlet tube of the heat exchanger. Thus, the hot water of 90*C can be obtained. By doing so, the thermal efficiency of the heat supply device is increased; energy is saved; the discharge amount of the waste gases is reduced; the environment is protected; the recovery cost is decreased; and the using life of the device is prolonged.

XIAO GUOXIONG (CN)

PCT/CN2004/000976

March 10, 2005

August 23, 2004

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XIAO GUOXIONG (CN)

F23J15/06; F27D17/00; (IPC1-7): F27D17/00; B01D47/06; F23J15/06

WO1999017862A1

1999-04-15

CN1220387A	1999-06-23
CN2435645Y	2001-06-20
JPH0933024A	1997-02-07
US4681744A	1987-07-21

Changsha, Zonekey Patent Law Firm (Changsha, Hunan 1, CN)

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