CN201072309Y - Heat recovery device for boiler flue gas - Google Patents
Heat recovery device for boiler flue gas Download PDFInfo
- Publication number
- CN201072309Y CN201072309Y CNU2007201702308U CN200720170230U CN201072309Y CN 201072309 Y CN201072309 Y CN 201072309Y CN U2007201702308 U CNU2007201702308 U CN U2007201702308U CN 200720170230 U CN200720170230 U CN 200720170230U CN 201072309 Y CN201072309 Y CN 201072309Y
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- heat exchanger
- water tank
- boiler
- heat
- housing
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Abstract
The utility model relates to a waste heat recycling device of fume in a boiler, which pertains to the technical field of energy equipment. The waste heat recycling device comprises a shell, an induced draft fan and a heat exchanger. The shell is connected with a smoke outlet channel of the boiler through a smoke channel. The induced draft fan is arranged at a place that is opposite to the smoke outlet channel of the boiler in the shell. The heat exchanger, which is arranged in the middle part of the shell, consists of a left water tank, a right water tank and heat exchanging pipes; outer wall of the left water tank and the right water tank clings closely to wall of the shell; heat exchanging pipes are arrayed in the left water tank and the right water tank in a parallel way and make the left water tank and the right water tank communicated with each other; surface of the heat exchanging pipes is provided with spiral tooth fins; the water tank on one side of the heat exchanging pipes is provided with an inlet and an outlet for circulating water. With the device, discharge temperature of the fume of the boiler is lower than 100 DEG C; after the fume is condensed, potential heat can be fully recycled; heat efficiency of the boiler is increased by 10 percent to 15 percent; the device is beneficial for environment protection.
Description
Technical field
The utility model relates to a kind of waste-heat recovery device of boiler smoke, belongs to the energy resource apparatus and technology field.
Background technology
In order to realize that heat supply and life use hot water, need be with a good heating system that comprises boiler, when the fuel in the boiler (natural gas, oil, coal) burns, emit heat and carry out and the heat exchange of working media (water).Gas fume after burning is discharged from chimney, and its discharged flue gas temperature is about 150～180 ℃.Have a large amount of heats in the flue gas that is discharged, the latent heat of vaporization in the steam of flue gas is very considerable, is example with 2,520,000 KJ/ hours small gas boilers, the about 800～1000m of fume emission per hour during operate as normal
3, contain the 200 kg of water steams of having an appointment in the flue gas.The steam transforming that per kilogram is 100 ℃ is that 100 ℃ of water can discharge the 2264KJ heat.Therefore reclaiming the latent heat of vaporization has considerable economic value.In the common flue gas waste heat recovery apparatus, the heat exchanger of employing makes with light steel pipe or corrugated stainless steel tubing, but heat exchange efficiency remains further to be improved.Therefore the structure of improving heat exchanger improves heat exchange efficiency practical meaning.
Summary of the invention
The purpose of this utility model is the waste-heat recovery device that proposes a kind of boiler smoke, improves the structure of existing residual heat from boiler fume retracting device heat exchanger, to improve the thermal efficiency of boiler.
The waste-heat recovery device of the boiler smoke that the utility model proposes comprises housing, air-introduced machine and heat exchanger, and described housing is connected with the smoke outlet flue of boiler by flue, described air-introduced machine place in the housing with boiler smoke outlet flue opposite position; Described heat exchanger places the middle part in the housing, heat exchanger by about two water tanks and heat exchanger tube form, about the outer wall of two water tanks be close to described housing wall, about heat exchanger tube is parallel in two water tanks, and two water tanks are connected about making, the surface of heat exchanger tube is provided with helical form tooth wing, and a side water tank of heat exchanger is provided with the recirculated water import and export, is provided with partition between the import and export of water tank; The described lower part of frame opposite side housing relative with flue is provided with smokejack, and the bottom of housing is provided with condensation-water drain and sewage draining exit.
The residual heat from boiler fume retracting device that the utility model proposes, can make the exhaust temperature of boiler smoke hang down 100 ℃ of whats, latent heat behind the flue gas condensing is fully reclaimed, and in the water that wherein the molten what water vapor condensation of a part of harmful substance forms during flue gas condensing, this waste water can discharge after treatment, thereby has reduced the pollution of boiler smoke to atmosphere.Therefore this device has not only utilized the fume afterheat of boiler, generally can improve boiler thermal output 10～15%, and help environmental protection.
Description of drawings
Fig. 1 is the structural representation of the waste-heat recovery device of the boiler smoke that the utility model proposes.
Fig. 2 is the schematic diagram of the helical form tooth wing on heat exchanger tube surface in the heat exchanger of this device.
Among Fig. 1 and Fig. 2, the 1st, burner, the 2nd, gas fired-boiler, the 3rd, boiler delivery port, the 4th, flue, the 5th, flue gas waste heat recovery apparatus housing, the 6th, air-introduced machine, the 7th, the heat exchanger tube in the heat exchanger, the 8th, the outlet pipe on the heat exchanger one side water tank, the 9th, the water inlet pipe on the heat exchanger one side water tank, the 10th, the right water tank of heat exchanger, the 11st, the left water tank of heat exchanger, the 12nd, smokejack, the 13rd, condensation-water drain, the 14th, sewage draining exit, the 15th, boiler feed water mouth, the 16th, the helical form tooth wing on heat exchanger tube surface.
The specific embodiment
The waste-heat recovery device of the boiler smoke that the utility model proposes, its structure comprise housing 5, air-introduced machine 6 and heat exchanger as shown in Figure 1.Housing 5 is connected by the smoke outlet flue of flue 4 with boiler 2.Air-introduced machine 6 place in the housing 5 with boiler smoke outlet flue opposite position.Heat exchanger places the middle part in the housing 1, heat exchanger by about two water tanks 10,11 and heat exchanger tube 7 form, about two water tanks 10 and 11 outer wall be close to the wall of described housing 1, about heat exchanger tube 7 is parallel in two water tanks, and two water tanks are connected about making.The surface of heat exchanger tube 7 is provided with helical form tooth wing 16, and a side water tank of heat exchanger is provided with recirculated water import and export 8 and 9, is provided with partition between the import and export of water tank.The bottom of the housing 5 opposite side housing relative with flue is provided with smokejack 12, and the bottom of housing is provided with condensation-water drain 13 and sewage draining exit 14.
The operation principle of this device is:
The high-temperature flue gas that boiler 2 is discharged enters the flue gas waste heat recovery apparatus of the utility model design through boiler exhaust gas flue 4, during by heat exchanger, carry out heat exchange with the recirculated water in the heat exchanger tube 7, the heat exchange water is entered by water inlet 9, derived by delivery port 8, the water source that the water that has heated up of derivation can be used as boiler enters boiler.Air-introduced machine 6 guarantees the proper flow of flue gas.The flue gas condensed water that generates that is condensed is discharged by condensation-water drain 13, and the dirt that flue gas forms by this device is by sewage draining exit 14 discharges.
The heat exchanger tube tooth finned tube of this device can increase the heat exchange area of flue gas Side greatly, the 8-12 of the light pipe of the suitable same inner diameter of heat exchange area of tooth finned tube doubly, because the coefficient of heat transfer of water Side makes the heat transfer of inner and outer wall near balance than the high order of magnitude of the coefficient of heat transfer of flue gas Side by the tooth finned tube.Given full play to the heat transfer effect of heat exchanger.Simultaneously, can make the structure of heat exchanger compact more.
When the temperature of the water in the heat exchanger can make a part of water recovery Cheng Shui in the flue gas, be that light pipe or its surface of common finned tube generally all can form moisture film, realize film condensation, this can influence the heat transfer of flue gas Side.After adopting the tooth finned tube,, form drop easily, realize dropwise condensation heat transfer at its crown place because this being configured with is beneficial to moisture film destruction.
The structure of helical tooth finned tube helps the formation of condensing droplet, and when its more irregular extended surface liquid flows through, thereby the boundary layer constantly is damaged repeatedly heat transfer coefficient is further improved.
Because the sensible heat and the latent heat of flue gas are recycled fully, thereby boiler thermal output can be improved more than 10%.
Claims (1)
1. a residual heat from boiler fume retracting device is characterized in that this device comprises housing, air-introduced machine and heat exchanger, and described housing is connected with the smoke outlet flue of boiler by flue, described air-introduced machine place in the housing with boiler smoke outlet flue opposite position; Described heat exchanger places the middle part in the housing, heat exchanger by about two water tanks and heat exchanger tube form, about the outer wall of two water tanks be close to described housing wall, about heat exchanger tube is parallel in two water tanks, and two water tanks are connected about making, the surface of heat exchanger tube is provided with helical form tooth wing, and a side water tank of heat exchanger is provided with the recirculated water import and export, is provided with partition between the import and export of water tank; The described lower part of frame opposite side housing relative with flue is provided with smokejack, and the bottom of housing is provided with condensation-water drain and sewage draining exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201702308U CN201072309Y (en) | 2007-08-17 | 2007-08-17 | Heat recovery device for boiler flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201702308U CN201072309Y (en) | 2007-08-17 | 2007-08-17 | Heat recovery device for boiler flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201072309Y true CN201072309Y (en) | 2008-06-11 |
Family
ID=39550867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201702308U Expired - Fee Related CN201072309Y (en) | 2007-08-17 | 2007-08-17 | Heat recovery device for boiler flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201072309Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825275A (en) * | 2009-03-03 | 2010-09-08 | 史振玺 | Device for recycling waste heat of flue gas in power station boiler |
| CN102589304A (en) * | 2012-02-06 | 2012-07-18 | 江苏焱鑫科技股份有限公司 | V-type enamel finned tube and manufacturing method of V-type enamel finned tube |
| CN102734850A (en) * | 2012-06-28 | 2012-10-17 | 耿二十 | Double-water jacket full-flue heat exchanger stove |
| CN107152674A (en) * | 2017-06-23 | 2017-09-12 | 江西南方锅炉股份有限公司 | A kind of My heat recovery |
| CN110887232A (en) * | 2018-09-07 | 2020-03-17 | 陕西希特新能源有限公司 | Finned tube type heat exchanger of condensing boiler |
| CN111054182A (en) * | 2019-12-24 | 2020-04-24 | 中投(天津)智能管道股份有限公司 | Tail gas dust removal purification device for insulating tube workshop |
| CN111197785A (en) * | 2019-12-27 | 2020-05-26 | 新疆维吾尔自治区第三机床厂 | Energy-saving heating device and using method |
-
2007
- 2007-08-17 CN CNU2007201702308U patent/CN201072309Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825275A (en) * | 2009-03-03 | 2010-09-08 | 史振玺 | Device for recycling waste heat of flue gas in power station boiler |
| CN102589304A (en) * | 2012-02-06 | 2012-07-18 | 江苏焱鑫科技股份有限公司 | V-type enamel finned tube and manufacturing method of V-type enamel finned tube |
| CN102734850A (en) * | 2012-06-28 | 2012-10-17 | 耿二十 | Double-water jacket full-flue heat exchanger stove |
| CN107152674A (en) * | 2017-06-23 | 2017-09-12 | 江西南方锅炉股份有限公司 | A kind of My heat recovery |
| CN110887232A (en) * | 2018-09-07 | 2020-03-17 | 陕西希特新能源有限公司 | Finned tube type heat exchanger of condensing boiler |
| CN111054182A (en) * | 2019-12-24 | 2020-04-24 | 中投(天津)智能管道股份有限公司 | Tail gas dust removal purification device for insulating tube workshop |
| CN111197785A (en) * | 2019-12-27 | 2020-05-26 | 新疆维吾尔自治区第三机床厂 | Energy-saving heating device and using method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 Termination date: 20150817 |
|
| EXPY | Termination of patent right or utility model |