CN204268453U - A kind of flue gas waste heat recovery system of absorption heat pump cycle - Google Patents
A kind of flue gas waste heat recovery system of absorption heat pump cycle Download PDFInfo
- Publication number
- CN204268453U CN204268453U CN201420744434.8U CN201420744434U CN204268453U CN 204268453 U CN204268453 U CN 204268453U CN 201420744434 U CN201420744434 U CN 201420744434U CN 204268453 U CN204268453 U CN 204268453U
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- boiler
- generator
- flue gas
- evaporimeter
- heat pump
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model discloses a kind of flue gas waste heat recovery system of absorption heat pump cycle, comprise gas fired-boiler, air preheater and absorption heat pump unit, described absorption heat pump unit comprises evaporimeter, condenser, throttle mechanism, absorber, solution pump, generator and choke valve, described absorber, solution pump, generator and choke valve are in turn connected into a loop, generator wherein connects condenser, throttle mechanism, evaporimeter successively, is finally connected to absorber; Described evaporimeter is provided with the discharge pipe for discharging flue gas and condensate water, and condenser is provided with boiler low-temperature to aquaporin and boiler high temperature water-supply passage, and boiler high temperature water-supply expanding channels is to gas fired-boiler; Described gas fired-boiler is provided with high temp. flue and steam branched bottom.The utility model advantage is compared with prior art: the temperature 5-8 degree Celsius improving feedwater, reduces feedwater caloric receptivity in the boiler, to reduce gas quantity, reaches the object of energy-saving and emission-reduction.
Description
Technical field
The utility model relates to heat reclaim unit, particularly relates to a kind of flue gas waste heat recovery system of absorption heat pump cycle.
Background technology
In order to change the Urumchi air pollution problems inherent that winter, coal heating caused, from 2010, Urumqi City starts " coal changes gas " engineering.The enforcement of " coal changes gas " engineering brings the blue sky and white cloud in Urumchi.At present, the clean energy resource heat supply ratio of main city zone Tianshan District, Urumqi City, Shayibak District, high and new technology industrial development zone (Xinshi District), Shuimogou District, Midong District reaches 100%, thoroughly achieve natural gas heating, become the city that first, the whole nation adopts natural gas heating.By the end of heating period in 2014, altogether hot water amount 10-100 ten thousand tons of gas fired-boiler more than 700 platforms are installed, these gas fired-boilers absorb fume afterheat by installing tail flue gas air preheater, make flue gas temperature of hearth outlet be reduced to 60-65 degree Celsius from 130-140 degree Celsius, be then discharged to air from chimney.At present retracting device is not adopted for the fume afterheat of low-grade 60-65 degree Celsius.
For the recovery of the flue-gas temperature of furnace outlet 130-140 degree Celsius, absorb fume afterheat by installing tail flue gas air preheater on the flue of gas fired-boiler at present, the high-temperature flue gas of 130-140 degree Celsius got rid of from gas fired-boiler burner hearth is incorporated into the air preheater that flue installs, this air preheater utilizes high-temperature flue gas waste-heat cold air, cold air is heated to form hot-air and sends into hearth combustor, for with natural gas mixed combustion, the low-temperature flue gas becoming 60-65 degree after high-temperature flue gas heat release enters air.
The flue of gas fired-boiler absorbs by installing tail flue gas air preheater the scheme shortcoming of fume afterheat, the mode of different transfer of heat can only be utilized as driving force to utilize waste heat, make low-grade utilization rate of waste heat not high, cause the exhaust gas temperature of gas fired-boiler low not, exist and utilize other technologies to utilize the space of low-grade waste heat further.
Utility model content
The utility model is to solve above-mentioned deficiency, provides a kind of flue gas waste heat recovery system of absorption heat pump cycle.
Above-mentioned purpose of the present utility model is realized by following technical scheme: a kind of flue gas waste heat recovery system of absorption heat pump cycle, comprise gas fired-boiler and air preheater, it is characterized in that: also comprise absorption heat pump unit, described absorption heat pump unit comprises evaporimeter, condenser, throttle mechanism, absorber, solution pump, generator and choke valve, described absorber, solution pump, generator and choke valve are in turn connected into a loop, generator wherein connects condenser, throttle mechanism, evaporimeter successively, is finally connected to absorber; Described evaporimeter is provided with the discharge pipe for discharging flue gas and condensate water, and condenser is provided with boiler low-temperature to aquaporin and boiler high temperature water-supply passage, and boiler high temperature water-supply expanding channels is to gas fired-boiler;
Described gas fired-boiler is provided with high temp. flue and steam branched bottom;
Described high temp. flue connects air preheater, and air preheater is provided with inlet of cold air, and is provided with hot air outlet expanding channels to gas fired-boiler, is provided with low-temperature flue gas expanding channels to evaporimeter simultaneously;
Described steam branched bottom connects generator, and generator is provided with condensed water passage, and condensed water passage is connected to boiler high temperature water-supply passage.
Operation principle of the present utility model is: the high-temperature flue gas of 130-140 degree Celsius of discharging from the burner hearth of gas fired-boiler is incorporated into the air preheater that flue is installed, this air preheater utilizes high-temperature flue gas waste-heat cold air, cold air is heated to form the burner hearth that hot-air sends into gas fired-boiler, for with natural gas mixed combustion, the low-temperature flue gas becoming 60-65 degree Celsius after high-temperature flue gas heat release enters the evaporimeter in absorption type heat pump system.When in absorption heat pump unit, the liquid refrigerant of low-temp low-pressure flows through evaporimeter, from low-temperature flue gas, absorb heat of vaporization become gaseous refrigerant working medium, 10-15 degree Celsius of flue gas is become and condensate water enters environment after low-temperature flue gas heat release, low-temp low-pressure gaseous refrigerant working medium, enter absorber and become concentrated solution by absorbent absorption, then generator is entered by solution pump, in generator, boiler-steam dome is introduced sub-fraction Steam Heating, because cold-producing medium and absorbent boiling point differ larger, lower boiling cold-producing medium heat absorption vaporization becomes the gaseous refrigerant working medium of HTHP, flow through condenser, within the condenser, the heat drawn from evaporimeter and generator is used for heating boiler low temperature feedwater, boiler low-temperature is fed water and is become the high temperature water-supply of boiler by heating, temperature raises 5-8 degree Celsius, and absorbent becomes weak solution by choke valve enters absorber, again for absorbing the gaseous refrigerant working medium of the low-temp low-pressure of evaporimeter, the rear liquefy of gaseous refrigerant working fluid condenses cooling of HTHP simultaneously, after flowing through throttle mechanism expansion, pressure continues to decline, become low-temp low-pressure liquid refrigerant working medium and flow into evaporimeter.
What deserves to be explained is that this circulation utilizes to draw sub-fraction steam as the power driving circulation from boiler-steam dome, steam becomes condensed water after generator heat release, and being then mixed with the high temperature water-supply of boiler high temperature water-supply passage is sent to gas fired-boiler.
The utility model advantage is compared with prior art: the utility model adopts heat pump techniques to reclaim gas fired-boiler 60-65 degree Celsius of fume waste heat, for the feedwater of heating boiler, improve the temperature 5-8 degree Celsius of feedwater, reduce feedwater caloric receptivity in the boiler, to reduce gas quantity, reach the object of energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of flue gas waste heat recovery system of absorption heat pump cycle, comprise gas fired-boiler 1, air preheater 2 and absorption heat pump unit 3, described absorption heat pump unit 3 comprises evaporimeter 3-1, condenser 3-2, throttle mechanism 3-3, absorber 3-4, solution pump 3-5, generator 3-6 and choke valve 3-7, described absorber 3-4, solution pump 3-5, generator 3-6 and choke valve 3-7 are in turn connected into a loop, generator 3-6 wherein connects condenser 3-2, throttle mechanism 3-3, evaporimeter 3-1 successively, is finally connected to absorber 3-4; Described evaporimeter 3-1 is provided with the discharge pipe 3-8 for discharging flue gas and condensate water, and condenser 3-2 is provided with boiler low-temperature to aquaporin 3-9 and boiler high temperature water-supply passage 3-10, and boiler high temperature water-supply passage 3-9 is connected to gas fired-boiler 1;
Described gas fired-boiler 1 is provided with high temp. flue 1-1 and steam branched bottom 1-2;
Described high temp. flue 1-1 connects air preheater 2, and air preheater 2 is provided with inlet of cold air 2-1, and is provided with hot air outlet passage 2-2 and is connected to gas fired-boiler 1, is provided with low-temperature flue gas passage 2-3 simultaneously and is connected to evaporimeter 3-1;
Described steam branched bottom 1-2 connects generator 3-6, and generator 3-6 is provided with condensed water passage 3-11, and condensed water passage 3-11 is connected to boiler high temperature water-supply passage 3-10.
Operation principle of the present utility model is: the high-temperature flue gas of 130-140 degree Celsius of discharging from the burner hearth of gas fired-boiler 1 is incorporated into the air preheater 2 that flue is installed, this air preheater 2 utilizes high-temperature flue gas waste-heat cold air, cold air is heated to form the burner hearth that hot-air sends into gas fired-boiler 1, for with natural gas mixed combustion, the low-temperature flue gas becoming 60-65 degree Celsius after high-temperature flue gas heat release enters the evaporimeter 3-1 in absorption type heat pump system.When in absorption heat pump unit, the liquid refrigerant of low-temp low-pressure flows through evaporimeter 3-1, from low-temperature flue gas, absorb heat of vaporization become gaseous refrigerant working medium, 10-15 degree Celsius of flue gas is become and condensate water enters environment after low-temperature flue gas heat release, low-temp low-pressure gaseous refrigerant working medium, enter absorber 3-4 and become concentrated solution by absorbent absorption, then generator 3-6 is entered by solution pump 3-5, in generator 3-6, boiler-steam dome is introduced sub-fraction Steam Heating, because cold-producing medium and absorbent boiling point differ larger, lower boiling cold-producing medium heat absorption vaporization becomes the gaseous refrigerant working medium of HTHP, flow through condenser 3-2, in condenser 3-2, the heat drawn from evaporimeter 3-1 and generator 3-6 is used for heating boiler low temperature feedwater, boiler low-temperature is fed water and is become the high temperature water-supply of boiler by heating, temperature raises 5-8 degree Celsius, and absorbent becomes weak solution by choke valve 3-7 enters absorber 3-4, again for absorbing the gaseous refrigerant working medium of the low-temp low-pressure that evaporimeter 3-1 comes, the rear liquefy of gaseous refrigerant working fluid condenses cooling of HTHP simultaneously, after flowing through throttle mechanism 3-3 expansion, pressure continues to decline, become low-temp low-pressure liquid refrigerant working medium and flow into evaporimeter 3-1.
What deserves to be explained is that this circulation utilizes to draw sub-fraction steam as the power driving circulation from boiler-steam dome, steam becomes condensed water after generator 3-6 heat release, and being then mixed with the high temperature water-supply of boiler high temperature water-supply passage 3-10 is sent to gas fired-boiler 1.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. the flue gas waste heat recovery system of an absorption heat pump cycle, comprise gas fired-boiler and air preheater, it is characterized in that: also comprise absorption heat pump unit, described absorption heat pump unit comprises evaporimeter, condenser, throttle mechanism, absorber, solution pump, generator and choke valve, described absorber, solution pump, generator and choke valve are in turn connected into a loop, generator wherein connects condenser, throttle mechanism, evaporimeter successively, is finally connected to absorber; Described evaporimeter is provided with the discharge pipe for discharging flue gas and condensate water, and condenser is provided with boiler low-temperature to aquaporin and boiler high temperature water-supply passage, and boiler high temperature water-supply expanding channels is to gas fired-boiler;
Described gas fired-boiler is provided with high temp. flue and steam branched bottom;
Described high temp. flue connects air preheater, and air preheater is provided with inlet of cold air, and is provided with hot air outlet expanding channels to gas fired-boiler, is provided with low-temperature flue gas expanding channels to evaporimeter simultaneously;
Described steam branched bottom connects generator, and generator is provided with condensed water passage, and condensed water passage is connected to boiler high temperature water-supply passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744434.8U CN204268453U (en) | 2014-12-02 | 2014-12-02 | A kind of flue gas waste heat recovery system of absorption heat pump cycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744434.8U CN204268453U (en) | 2014-12-02 | 2014-12-02 | A kind of flue gas waste heat recovery system of absorption heat pump cycle |
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| CN204268453U true CN204268453U (en) | 2015-04-15 |
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| CN201420744434.8U Expired - Fee Related CN204268453U (en) | 2014-12-02 | 2014-12-02 | A kind of flue gas waste heat recovery system of absorption heat pump cycle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359103A (en) * | 2014-12-02 | 2015-02-18 | 代元军 | Flue gas residual heat recovery system with absorption type heat pump circulation |
| CN107314571A (en) * | 2017-07-11 | 2017-11-03 | 新奥（中国）燃气投资有限公司 | Heat pump and its heat recovery method |
| CN110567039A (en) * | 2019-09-06 | 2019-12-13 | 河北昊天热力发展有限公司 | Gas absorption type air source heat pump circulating heat supply system |
| CN110986031A (en) * | 2019-12-05 | 2020-04-10 | 西安交通大学 | System for avoiding water vapor condensation in gas boiler flue gas recirculation pipeline |
-
2014
- 2014-12-02 CN CN201420744434.8U patent/CN204268453U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359103A (en) * | 2014-12-02 | 2015-02-18 | 代元军 | Flue gas residual heat recovery system with absorption type heat pump circulation |
| CN107314571A (en) * | 2017-07-11 | 2017-11-03 | 新奥（中国）燃气投资有限公司 | Heat pump and its heat recovery method |
| CN107314571B (en) * | 2017-07-11 | 2020-10-27 | 新奥（中国）燃气投资有限公司 | Heat pump system and heat recovery method thereof |
| CN110567039A (en) * | 2019-09-06 | 2019-12-13 | 河北昊天热力发展有限公司 | Gas absorption type air source heat pump circulating heat supply system |
| CN110986031A (en) * | 2019-12-05 | 2020-04-10 | 西安交通大学 | System for avoiding water vapor condensation in gas boiler flue gas recirculation pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151110 Address after: 830091 Nanchang road the Xinjiang Uygur Autonomous Region Urumqi shayibake District No. 236 Xinjiang Institute of electric power engineering Patentee after: Xinjiang Institute of Engineering Address before: 830091 Nanchang road the Xinjiang Uygur Autonomous Region Urumqi shayibake District No. 236 Xinjiang Institute of electric power engineering Patentee before: Dai Yuanjun |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20161202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |