CN204254668U - A kind of flue gas waste heat recovery system of steam jet heat pump circulation - Google Patents
A kind of flue gas waste heat recovery system of steam jet heat pump circulation Download PDFInfo
- Publication number
- CN204254668U CN204254668U CN201420744433.3U CN201420744433U CN204254668U CN 204254668 U CN204254668 U CN 204254668U CN 201420744433 U CN201420744433 U CN 201420744433U CN 204254668 U CN204254668 U CN 204254668U
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- China
- Prior art keywords
- boiler
- heat pump
- flue gas
- steam jet
- gas
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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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- 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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses the flue gas waste heat recovery system of a kind of steam jet heat pump circulation, comprise gas fired-boiler, air preheater and steam jet heat pump device, described steam jet heat pump device comprises the evaporimeter, mixing chamber, diffuser pipe, condenser and the throttle mechanism that are in turn connected into a loop, and the nozzle be connected with mixing chamber; 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 the flue gas waste heat recovery system of a kind of steam jet heat pump circulation.
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 the flue gas waste heat recovery system of a kind of steam jet heat pump circulation.
Above-mentioned purpose of the present utility model is realized by following technical scheme: a kind of flue gas waste heat recovery system of steam jet heat pump circulation, comprise gas fired-boiler and air preheater, it is characterized in that: also comprise steam jet heat pump device, described steam jet heat pump device comprises the evaporimeter, mixing chamber, diffuser pipe, condenser and the throttle mechanism that are in turn connected into a loop, and the nozzle be connected with mixing chamber; 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 nozzle; Be provided with water vapour passage between diffuser pipe and condenser, water vapour expanding channels is 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 hot-air and 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 steam jet heat pump device.From low-temperature flue gas, absorb heat of vaporization when the liquid refrigerant of low-temp low-pressure flows through evaporimeter in steam jet heat pump device and become gaseous refrigerant working medium, become 10-15 degree Celsius of flue gas after low-temperature flue gas heat release and condensate water enters environment.Low-temp low-pressure gaseous refrigerant working medium, enter mixing chamber to mix with the air-flow of nozzle high speed water steam out, then to slow down in diffuser pipe supercharging, become the gaseous refrigerant working medium of HTHP, wherein a part flows through condenser, within the condenser, the heat drawn from evaporimeter and mixing chamber 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, liquefy after the gaseous refrigerant working fluid condenses cooling of HTHP, after flowing through throttle mechanism expansion, pressure continues to decline, become low-temp low-pressure liquid refrigerant working medium and flow into evaporimeter, and gas fired-boiler heating is sent in the high temperature water-supply mixing of other a part of water vapour and boiler high temperature water-supply passage.
What deserves to be explained is that this circulation utilizes to draw sub-fraction steam as the power driving circulation from boiler-steam dome, namely working media, this working media is by after nozzle, mixing chamber, diffuser pipe becoming the low-temp low-pressure gaseous refrigerant carrying out flash-pot the gaseous refrigerant working medium of HTHP.Water vapour is the cold-producing medium working medium of this steam jet heat pump circulation.
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 steam jet heat pump circulation, comprise gas fired-boiler 1, air preheater 2 and steam jet heat pump device 3, described steam jet heat pump device 3 comprises the evaporimeter 3-1, mixing chamber 3-2, diffuser pipe 3-3, condenser 3-4 and the throttle mechanism 3-5 that are in turn connected into a loop, and the nozzle 3-6 be connected with mixing chamber 3-2; Described evaporimeter 3-1 is provided with the discharge pipe 3-7 for discharging flue gas and condensate water, and condenser 3-4 is provided with boiler low-temperature to aquaporin 3-8 and boiler high temperature water-supply passage 3-9, and boiler high temperature water-supply leads to 3-9 road and 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 nozzle 3-6; Be provided with water vapour passage 3-10 between diffuser pipe 3-3 and condenser 3-4, water vapour passage 3-10 is connected to boiler high temperature water-supply passage 3-9.
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 hot-air and 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 steam jet heat pump device 3.From low-temperature flue gas, absorb heat of vaporization when the liquid refrigerant of low-temp low-pressure flows through evaporimeter 3-1 in steam jet heat pump device 3 and become gaseous refrigerant working medium, become 10-15 degree Celsius of flue gas after low-temperature flue gas heat release and condensate water enters environment.Low-temp low-pressure gaseous refrigerant working medium, enter mixing chamber 3-2 to mix with the air-flow of nozzle 3-6 high speed water steam out, then to slow down in diffuser pipe 3-3 supercharging, become the gaseous refrigerant working medium of HTHP, wherein a part flows through condenser 3-4, in condenser 3-4, the heat drawn from evaporimeter 3-1 and mixing chamber 3-2 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, liquefy after the gaseous refrigerant working fluid condenses cooling of HTHP, after flowing through throttle mechanism 3-5 expansion, pressure continues to decline, become low-temp low-pressure liquid refrigerant working medium and flow into evaporimeter 3-1, and the high temperature water-supply mixing feeding gas fired-boiler 1 of other a part of water vapour and boiler high temperature water-supply passage 3-9 heats.
What deserves to be explained is that this circulation utilizes to draw sub-fraction steam as the power driving circulation from boiler-steam dome, namely working media, this working media is by after nozzle 3-6, mixing chamber 3-2, diffuser pipe 3-3 becoming the low-temp low-pressure gaseous refrigerant carrying out flash-pot 3-1 the gaseous refrigerant working medium of HTHP.Water vapour is the cold-producing medium working medium of this steam jet heat pump circulation.
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 a steam jet heat pump circulation, comprise gas fired-boiler and air preheater, it is characterized in that: also comprise steam jet heat pump device, described steam jet heat pump device comprises the evaporimeter, mixing chamber, diffuser pipe, condenser and the throttle mechanism that are in turn connected into a loop, and the nozzle be connected with mixing chamber; 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 nozzle; Be provided with water vapour passage between diffuser pipe and condenser, water vapour expanding channels is to boiler high temperature water-supply passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744433.3U CN204254668U (en) | 2014-12-02 | 2014-12-02 | A kind of flue gas waste heat recovery system of steam jet heat pump circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744433.3U CN204254668U (en) | 2014-12-02 | 2014-12-02 | A kind of flue gas waste heat recovery system of steam jet heat pump circulation |
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| CN204254668U true CN204254668U (en) | 2015-04-08 |
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|---|---|---|---|
| CN201420744433.3U Expired - Fee Related CN204254668U (en) | 2014-12-02 | 2014-12-02 | A kind of flue gas waste heat recovery system of steam jet heat pump circulation |
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| CN (1) | CN204254668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456610A (en) * | 2014-12-02 | 2015-03-25 | 代元军 | Steam jet type heat pump circulating flue gas waste heat recovery system |
-
2014
- 2014-12-02 CN CN201420744433.3U patent/CN204254668U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456610A (en) * | 2014-12-02 | 2015-03-25 | 代元军 | Steam jet type heat pump circulating flue gas waste heat recovery system |
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| 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: 20151117 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: 20150408 Termination date: 20161202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |