CN202947152U - Gas boiler flue gas heat energy recovery system with a preheater - Google Patents
Gas boiler flue gas heat energy recovery system with a preheater Download PDFInfo
- Publication number
- CN202947152U CN202947152U CN2012206493916U CN201220649391U CN202947152U CN 202947152 U CN202947152 U CN 202947152U CN 2012206493916 U CN2012206493916 U CN 2012206493916U CN 201220649391 U CN201220649391 U CN 201220649391U CN 202947152 U CN202947152 U CN 202947152U
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- CN
- China
- Prior art keywords
- heat exchanger
- preheater
- air intake
- boiler
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model relates to a gas boiler flue gas heat energy recovery system with a preheater. The gas boiler flue gas heat energy recovery system with the preheater comprises a preheater (1), a first wind inlet heat exchanger (2), a smoke discharge heat exchanger (3), a second wind inlet heat exchanger (11), a gas boiler (4), a boiler blower (10), a direct-fried type heat pump (6) and a condensate water buffer tank (8), wherein ambient air is sequentially connected with the preheater (1), the first wind inlet heat exchanger (2),the second wind inlet heat exchanger (11) and the gas boiler (4), smoke discharge of the gas boiler is sequentially connected with the second wind inlet heat exchanger (11), the smoke discharge heat exchanger (3) and the first wind inlet heat exchanger (2), circulating water of the smoke discharge heat exchanger (3) is connected with the direct-fried type heat pump (6) and then returns to the smoke discharge heat exchanger (3), return water of a heating pipe network is connected with the direct-fried type heat pump (6), and flue gas condensate water of the smoke discharge heat exchanger (3) and the first wind inlet heat exchanger (2) is connected with the condensate water buffer tank (8) and then is connected with the preheater (1). According to the gas boiler flue gas heat energy recovery system with the preheater, low temperature ambient air entered in can be preheated, and thus heat transfer limit encountered by a heat-pipe type air inlet heat exchanger is eliminated.
Description
Technical field
The utility model relates to a kind of gas fired-boiler smoke heat energy recovery system.Be used for the energy-saving and emission-reduction transformation of boiler or similar industry.
Background technology
Follow wideling popularize of national energy-saving environmental protection policy rules, gas fired-boiler has in a lot of industries the trend that replaces gradually coal-burning boiler, oil burning boiler.Main cause is that coal and oil produce a large amount of dust when burning, a large amount of sour gas formation of burning generation acid rain weldings.Compare with oil with coal, natural gas is a kind of clean energy resource, and sufficient combustion produces dust hardly; Natural gas has the acid gas removal link in process of production, so the content of acid gas in natural gas is extremely low, acid gas-containing hardly in boiler exhaust gas does not destroy environment.
Because the smoke evacuation of gas fired-boiler is very clean, so the waste heat that reclaims the gas fired-boiler smoke evacuation is convenient.But, contain the steam of 18% left and right in the gas fired-boiler smoke evacuation, condensing at worst cold case steam discharges a large amount of latent heat, and this latent heat amount is huge, to such an extent as to rely on merely the preboiler air intake can't reclaim it fully, this just needs to adopt new scheme and technology fully to reclaim this waste heat.
After the surrounding air of low temperature enters system, if directly enter the air intake heat exchanger of heat pipe form, cause air intake heat exchanger heat pipe to be easy to run into heat transport limitation because environment temperature is too low, equipment cisco unity malfunction or design selection difficulty.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of environment air intake of energy preheating low temperature is provided, thus the gas fired-boiler smoke heat energy recovery system of the heat transfer limitations that the air intake heat exchanger of elimination heat pipe form runs into.
the purpose of this utility model is achieved in that a kind of gas fired-boiler smoke heat energy recovery system with preheater, it is characterized in that: described system comprises: preheater, the first air intake heat exchanger, exhaust heat exchanger, the second air intake heat exchanger, gas fired-boiler, boiler fan, circulating pump, the direct combustion type heat pump, the heat pump blower fan, solidifying water surge tank, condensate pump and pipe-line system, surrounding air accesses preheater successively through boiler fan, the first air intake heat exchanger, the second air intake heat exchanger and gas fired-boiler, boiler exhaust gas accesses the second air intake heat exchanger successively, exhaust heat exchanger and the first air intake heat exchanger, go out the recirculated water of exhaust heat exchanger through circulating pump access direct combustion type heat pump, take back again exhaust heat exchanger after going out the direct combustion type heat pump, heating network backwater access direct combustion type heat pump, remove heating network after going out the direct combustion type heat pump, go out the solidifying water surge tank of flue gas condensed water access of exhaust heat exchanger and the first air intake heat exchanger, go out surge tank and access preheater by condensate pump.
The beneficial effects of the utility model are:
The utility model has reclaimed huge latent heat and the sensible heat in the gas fired-boiler smoke evacuation, and a part is used for the preboiler air intake, reduces gas consumption; Another part is as the thermal source of heat pump, is raised after grade as other thermal source utilizations; Produce solidifying water in the flue gas cool-down process, after being collected, solidifying water is used for the environment air intake of preheating low temperature, when the inlet air of boiler after temperature raises flows through the first air intake heat exchanger, thereby the heat transport limitation that can not cause the first air intake heat exchanger has reduced probability of equipment failure, improved the reliability of equipment, simultaneously, the heat of flue gas condensed water is reclaimed by the environment air intake of low temperature.
Description of drawings
Fig. 1 is the gas fired-boiler smoke heat energy recovery system schematic flow sheet of the utility model band preheater.
Reference numeral in figure:
Preheater 1, the first air intake heat exchanger 2, exhaust heat exchanger 3, gas fired-boiler 4, circulating pump 5, direct combustion type heat pump 6, heat pump blower fan 7, solidifying water surge tank 8, condensate pump 9, boiler fan 10, the second air intake heat exchanger 11.
The specific embodiment
Referring to Fig. 1, Fig. 1 is the gas fired-boiler smoke heat energy recovery system schematic flow sheet of the utility model band preheater.as seen from Figure 1, the gas fired-boiler smoke heat energy recovery system of the utility model band preheater, described system comprises: preheater 1, the first air intake heat exchanger 2, exhaust heat exchanger 3, gas fired-boiler 4, circulating pump 5, direct combustion type heat pump 6, heat pump blower fan 7, solidifying water surge tank 8, condensate pump 9, boiler fan 10, the second air intake heat exchanger 11 and pipe-line system, surrounding air accesses preheater 1 successively through boiler fan 10, the first air intake heat exchanger 2, the second air intake heat exchanger 11 and gas fired-boiler 4, boiler exhaust gas accesses the second air intake heat exchanger 11 successively, exhaust heat exchanger 3 and the first air intake heat exchanger 2, go out the recirculated water of exhaust heat exchanger 3 through circulating pump 5 access direct combustion type heat pumps 6, take back out again exhaust heat exchanger 3 after going out direct combustion type heat pump 6, heating network backwater access direct combustion type heat pump 6, remove heating network after going out direct combustion type heat pump 6, go out the solidifying water surge tank 8 of flue gas condensed water access of exhaust heat exchanger 3 and the first air intake heat exchanger 2, go out surge tank 8 by condensate pump 9 access preheaters 1.
Through entering gas fired-boiler 4 burnings after preheater 1, the first air intake heat exchanger 2,11 3 grades of pre-heating temperature elevations of the second air intake heat exchanger, the thermal source of preheating environment air intake is boiler exhaust gas to the surrounding air of low temperature successively.During boiler exhaust gas process exhaust heat exchanger 3, energy is by the circulating water reclamation of direct combustion type heat pump 6, and finally by heating pipe network backwater after 6 upgradings of direct combustion type heat pump, heat is recovered utilization.Flue gas is when flowing through exhaust heat exchanger 3 and the first air intake heat exchanger 2, temperature reduces and has coagulates water generates in a large number, solidifying water is collected in solidifying water surge tank 8, be sent to preheater 1 by condensate pump 9 at last, with the environment air intake of the solidifying water preheat low temperature of about 40 ℃, with discharge system after the environment air intake heat exchange of low temperature.After environment air intake heat absorption, self temperature improves, and when flowing through the first air intake heat exchanger 2, thereby the heat transport limitation that can not cause the first air intake heat exchanger 2 has reduced probability of equipment failure, improved the reliability of equipment, simultaneously, the heat of flue gas condensed water is reclaimed by the environment air intake of low temperature, and energy-saving effect is arranged.
Claims (1)
1. gas fired-boiler smoke heat energy recovery system with preheater, it is characterized in that: described system comprises: preheater (1), the first air intake heat exchanger (2), exhaust heat exchanger (3), the second air intake heat exchanger (11), gas fired-boiler (4), boiler fan (10), circulating pump (5), direct combustion type heat pump (6), heat pump blower fan (7), solidifying water surge tank (8), condensate pump (9) and pipe-line system, surrounding air accesses preheater (1) successively through boiler fan (10), the first air intake heat exchanger (2), the second air intake heat exchanger (11) and gas fired-boiler (4), boiler exhaust gas access the second air intake heat exchanger (11) successively, exhaust heat exchanger (3) and the first air intake heat exchanger (2), go out the recirculated water of exhaust heat exchanger (3) through circulating pump (5) access direct combustion type heat pump (6), take back again exhaust heat exchanger (3) after going out direct combustion type heat pump (6), heating network backwater access direct combustion type heat pump (6), remove heating network after going out direct combustion type heat pump (6), go out the solidifying water surge tank (8) of flue gas condensed water access of exhaust heat exchanger (3) and the first air intake heat exchanger (2), go out surge tank (8) by condensate pump (9) access preheater (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206493916U CN202947152U (en) | 2012-12-01 | 2012-12-01 | Gas boiler flue gas heat energy recovery system with a preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206493916U CN202947152U (en) | 2012-12-01 | 2012-12-01 | Gas boiler flue gas heat energy recovery system with a preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202947152U true CN202947152U (en) | 2013-05-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206493916U Expired - Fee Related CN202947152U (en) | 2012-12-01 | 2012-12-01 | Gas boiler flue gas heat energy recovery system with a preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202947152U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896798A (en) * | 2015-06-08 | 2015-09-09 | 张跃 | Low-grade and heat-grading recycling heat pump hoisting system and waste heat grading recycling method thereof |
| CN105020734A (en) * | 2014-04-18 | 2015-11-04 | 中石化洛阳工程有限公司 | Method and device for recycling smoke waste heat |
| CN111059563A (en) * | 2020-01-19 | 2020-04-24 | 新疆和融热力有限公司 | Flue gas waste heat degree of depth recovery economizer system based on gas boiler |
-
2012
- 2012-12-01 CN CN2012206493916U patent/CN202947152U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020734A (en) * | 2014-04-18 | 2015-11-04 | 中石化洛阳工程有限公司 | Method and device for recycling smoke waste heat |
| CN105020734B (en) * | 2014-04-18 | 2017-07-14 | 中石化洛阳工程有限公司 | A kind of method and apparatus of Mist heat recovering |
| CN104896798A (en) * | 2015-06-08 | 2015-09-09 | 张跃 | Low-grade and heat-grading recycling heat pump hoisting system and waste heat grading recycling method thereof |
| CN111059563A (en) * | 2020-01-19 | 2020-04-24 | 新疆和融热力有限公司 | Flue gas waste heat degree of depth recovery economizer system based on gas boiler |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20201201 |