CN205299569U - Residual heat from flue gas system and gas boiler equipment - Google Patents
Residual heat from flue gas system and gas boiler equipment Download PDFInfo
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- CN205299569U CN205299569U CN201521073882.0U CN201521073882U CN205299569U CN 205299569 U CN205299569 U CN 205299569U CN 201521073882 U CN201521073882 U CN 201521073882U CN 205299569 U CN205299569 U CN 205299569U
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- remaining hot
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Abstract
The utility model discloses a residual heat from flue gas system and gas boiler equipment, including flue gas heat reclamation device and absorption heat pump, flue gas heat reclamation device includes flue gas entry, exhanst gas outlet to reach waste heat water entry and the export of waste heat water with the absorption heat pump intercommunication, the flue gas gets into through flue gas entry that flue gas heat reclamation device releases the heat and through the exhanst gas outlet atmosphere of discharging, waste heat water gets into flue gas heat reclamation device from waste heat water entry and absorbs the flue gas liberated heat and discharge through the export of waste heat water, and the evaporimeter release heat that exhaust waste heat water got into absorption heat pump gets into the surplus circulation of hot water import in order to carry out heat exchange and discharge the back from absorption heat pump's evaporimeter. Adopt the utility model discloses a residual heat from flue gas system and gas boiler equipment has retrieved the heat of flue gas, puies forward high energy's utilization ratio, has optimized the energy resource structure to processing through SCR technical equipment has reduced environmental pollution, effectively reduces PM2.5's emission.
Description
Technical field
This utility model relates to a kind of residual neat recovering system, particularly a kind of flue gas waste heat recovery system and gas fired-boiler equipment.
Background technology
In prior art, gas fired-boiler obtains heat by combustion gas and water is heated, and directly by fume emission to air. Owing to the exhaust temperature of flue gas is generally at about 200 DEG C, temperature is relatively low, it is not easy to directly recycle, and owing to mainly containing nitrogen oxides in the flue gas of gas fired-boiler discharge, is directly discharged in air and causes atmospheric pollution, and PM2.5 also can increase.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of flue gas waste heat recovery system and gas fired-boiler equipment, has reclaimed the heat of flue gas, improves the utilization rate of the energy, decreases the flue gas pollution to environment.
In order to solve above-mentioned technical problem, this utility model provides a kind of flue gas waste heat recovery system, including flue gas heat-recovering device and absorption heat pump, described flue gas heat-recovering device includes smoke inlet, exhanst gas outlet, and the remaining hot water entrance connected with described absorption heat pump and remaining hot water export; Wherein:
Flue gas enters into described flue gas heat-recovering device by described smoke inlet and the remaining hot water in described flue gas heat-recovering device is discharged heat and is discharged to air by described exhanst gas outlet;
Remaining hot water absorbs flue gas liberated heat from the described remaining hot water entrance described flue gas heat-recovering device of entrance and exports discharge by described remaining hot water, and the vaporizer entering described absorption heat pump from the remaining hot water of described remaining hot water outlet discharge discharges heat and enters described remaining hot water import to carry out the circulation of heat exchange after the vaporizer discharge of described absorption heat pump.
As preferably, described absorption heat pump is gas type absorption heat pump, and the flue gas that described gas type absorption heat pump produces enters into described flue gas heat-recovering device by described smoke inlet and the remaining hot water in described flue gas heat-recovering device discharged heat and is discharged to air by described exhanst gas outlet.
As preferably, described flue gas heat-recovering device is direct contact type flue gas heat-recovering device.
As preferably, also including SCR (selective catalytic reduction) technical equipment connected with described flue gas heat-recovering device, flue gas enters described smoke inlet by after described SCR technology equipment.
The invention also discloses a kind of gas fired-boiler equipment, including above-mentioned flue gas waste heat recovery system, described smoke inlet is for receiving the flue gas that described gas fired-boiler produces.
Compared with prior art, having the beneficial effects that of flue gas waste heat recovery system of the present utility model and gas fired-boiler equipment: reclaimed the heat of flue gas, make full use of heat sources, improve the utilization rate of the energy, optimize the structure of the energy, and by the process of SCR technology equipment, decrease the flue gas pollution to environment, effectively reduce the discharge of PM2.5.
Accompanying drawing explanation
Fig. 1 is the FB(flow block) of flue gas waste heat recovery system of the present utility model and gas fired-boiler;
Fig. 2 is the structural representation of flue gas waste heat recovery system of the present utility model and gas fired-boiler.
Accompanying drawing labelling: 1-gas fired-boiler; 2-burner; 3-condenser; 4-vaporizer; 5-absorber; 6-solution heat exchanger; 7-solution pump; 8-SCR technical equipment; 9-flue gas heat-recovering device; 10-waste heat water pump; 11-smoke inlet; 12-exhanst gas outlet; 13-remaining hot water entrance; 14-remaining hot water exports; 15-Gas Pipe; 16-fume pipe; 17-waste heat water pipe; 18-filling pipe; 19-hot-water line; 20-solution conduit; 21-refrigerant pipe
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, flue gas waste heat recovery system of the present utility model and gas fired-boiler equipment are described in further detail, but not as to restriction of the present utility model.
Fig. 1 is the FB(flow block) of flue gas waste heat recovery system of the present utility model and gas fired-boiler, and Fig. 2 is the structural representation of flue gas waste heat recovery system of the present utility model and gas fired-boiler. As depicted in figs. 1 and 2, flue gas waste heat recovery system of the present utility model includes flue gas heat-recovering device 9 and absorption heat pump, and it is direct contact type flue gas heat-recovering device that absorption heat pump includes condenser 3, vaporizer 4, absorber 5 and generator flue gas heat-recovering device 9. Flue gas heat-recovering device 9 includes smoke inlet 11, exhanst gas outlet 12 and the remaining hot water entrance 13 connected with absorption heat pump and remaining hot water outlet 14, flue gas enters flue gas heat-recovering device 9 by smoke inlet 11 and releases after heat and be discharged to air from exhanst gas outlet 12, and remaining hot water enters flue gas heat-recovering device 9 from remaining hot water entrance 13 and absorbs flue gas liberated heat in flue gas heat-recovering device 9, remaining hot water exports 14 vaporizers 4 being discharged to absorption heat pump from remaining hot water subsequently. In direct contact type flue gas heat-recovering device, flue gas carries out heat exchange with remaining hot water by directly contacting, and the coefficient of heat transfer of this kind of flue gas heat-recovering device is high, good effect of heat exchange. Remaining hot water carries out heat exchange with the chilled water in vaporizer 4 in vaporizer 4, and the heat absorbed in flue gas heat-recovering device 9 by remaining hot water is released, and chilled water absorbs heat in vaporizer 4 and becomes coolant steam. Exothermic remaining hot water flows into again the remaining hot water entrance 13 of flue gas heat-recovering device 9 in vaporizer 4, to carry out next circulation. Low-temperature flue gas releases heat in flue gas heat-recovering device 9, and remaining hot water transfers heat to the chilled water in vaporizer 4 after absorbing heat, has reclaimed the heat of low-temperature flue gas, has made the heat of low-temperature flue gas efficiently be utilized, Optimization of Energy Structure.
Further, in the present embodiment, absorption heat pump is gas type absorption heat pump, and namely generator is burner 2. The flue gas that burner 2 produces can pass through smoke inlet 11 and enters flue gas heat-recovering device 9 or enter back into smoke inlet 11 by after SCR technology equipment 8, and the flue gas that burner 2 produces in a manner mentioned above can also carry out UTILIZATION OF VESIDUAL HEAT IN, reduces the waste of the energy.
Further, flue gas waste heat recovery system also includes the SCR technology equipment 8 connected with flue gas heat-recovering device 9, and flue gas is by entering back into the smoke inlet 11 of flue gas heat-recovering device 9 after SCR technology equipment 8. Removed the nitrogen oxides contained in flue gas by SCR technology equipment 8, not only reduce atmospheric pollution, reduce PM2.5, moreover it is possible to reduce the corrosion to pipeline.
Workflow including the gas fired-boiler residual neat recovering system of above-mentioned flue gas waste heat recovery system is as follows: the burner 2 that combustion gas enters gas fired-boiler 1 and gas type absorption heat pump respectively through Gas Pipe 15 burns, flue gas (being generally 180 DEG C��200 DEG C) after burning enters SCR technology equipment 8 by the fume pipe 16 between the fume pipe 16 between gas fired-boiler 1 and SCR technology equipment 8 and burner 2 and SCR technology equipment 8 and carries out the removal of nitrogen oxides, pass through the fume pipe 16 between SCR technology equipment 8 and flue gas heat-recovering device 9 from the flue gas of SCR technology equipment 8 discharge enter smoke inlet 11 and flue gas heat-recovering device 9, release heat, it is discharged to air subsequently by the fume pipe 16 at exhanst gas outlet 12 place, the temperature of the flue gas discharging air is 25 DEG C��30 DEG C. the remaining hot water of 30 DEG C enters remaining hot water entrance 13 and absorbs flue gas liberated heat in flue gas heat-recovering device 9, is exported 14 discharges by remaining hot water subsequently, and the temperature of the remaining hot water of discharge is 35 DEG C. export the remaining hot waters of 14 discharges by entering vaporizer 4 after waste heat water pump 10 from remaining hot water, and vaporizer 4 in releasing heat, discharge from vaporizer 4 subsequently and pass through waste heat water pipe 17 and enter remaining hot water entrance 13, complete the circulation of remaining hot water. and chilled water low-temperature evaporation in vaporizer 4 becomes coolant steam, thus absorbing the heat of remaining hot water. by filling pipe 18 being accessed the waste heat water pipe 17 between vaporizer 4 and remaining hot water entrance 13, thus the loss of the remaining hot water supplemented in remaining hot water circulation.
The hot water of 50 DEG C is heated in part through gas fired-boiler 1, another part enters absorber 5 by hot-water line 19 and absorbs heat, the coolant steam that this heat is absorbed in absorber 5 by the LiBr concentrated solution in absorber 5 provides, hot water after absorbing heat from absorber 5 and discharge enters condenser 3 by hot-water line, hot water again absorbs heat in condenser 3, is discharged by hot-water line 19 subsequently. Hot water after gas fired-boiler 1 heating rises to 80 DEG C with by the hot water temperature after absorber 5 and condenser 3 heating, and the hot water after heating can be supplied to user.
LiBr concentrated solution becomes LiBr weak solution after absorbing coolant steam in absorber 5 and releases heat, by solution pump 7, LiBr weak solution is passed through solution conduit 20 send into burner 2 and LiBr weak solution is heated concentration in burner 2, in burner 2, produce the coolant steam of LiBr concentrated solution and high temperature. The coolant steam of high temperature is entered condenser 3 by refrigerant pipe 21 and is become chilled water and heat release in condenser 3, thus providing heat to hot water, chilled water subsequently enters vaporizer 4. And in burner 2 produce LiBr concentrated solution by solution conduit 20 enter absorber 5 and absorber 5 in absorption right vaporizer 4 enter in absorber 5 coolant steam thus releasing heat.Wherein, LiBr weak solution and the LiBr concentrated solution solution heat exchanger 6 between absorber 5 and burner 2 carries out heat exchange.
Above example is only exemplary embodiment of the present utility model, is not used in restriction this utility model, and protection domain of the present utility model is defined by the claims. This utility model in essence of the present utility model and protection domain, can be made various amendment or equivalent replacement by those skilled in the art, and this amendment or equivalent replacement also should be regarded as dropping in protection domain of the present utility model.
Claims (5)
1. a flue gas waste heat recovery system, it is characterised in that include flue gas heat-recovering device and absorption heat pump, described flue gas heat-recovering device includes smoke inlet, exhanst gas outlet, and the remaining hot water entrance connected with described absorption heat pump and remaining hot water export; Wherein:
Flue gas enters into described flue gas heat-recovering device by described smoke inlet and the remaining hot water in described flue gas heat-recovering device is discharged heat and is discharged to air by described exhanst gas outlet;
Remaining hot water absorbs flue gas liberated heat from the described remaining hot water entrance described flue gas heat-recovering device of entrance and exports discharge by described remaining hot water, and the vaporizer entering described absorption heat pump from the remaining hot water of described remaining hot water outlet discharge discharges heat and enters described remaining hot water import to carry out the circulation of heat exchange after the vaporizer discharge of described absorption heat pump.
2. flue gas waste heat recovery system according to claim 1, it is characterized in that, described absorption heat pump is gas type absorption heat pump, and the flue gas that described gas type absorption heat pump produces enters into described flue gas heat-recovering device by described smoke inlet and the remaining hot water in described flue gas heat-recovering device discharged heat and is discharged to air by described exhanst gas outlet.
3. flue gas waste heat recovery system according to claim 1, it is characterised in that described flue gas heat-recovering device is direct contact type flue gas heat-recovering device.
4. flue gas waste heat recovery system according to any one of claim 1 to 3, it is characterised in that also include the SCR technology equipment connected with described flue gas heat-recovering device, flue gas enters described smoke inlet by after described SCR technology equipment.
5. a gas fired-boiler equipment, including gas fired-boiler, it is characterised in that described gas fired-boiler equipment also includes the flue gas waste heat recovery system according to any one of Claims 1-4, and described smoke inlet is for receiving the flue gas that described gas fired-boiler produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521073882.0U CN205299569U (en) | 2015-12-21 | 2015-12-21 | Residual heat from flue gas system and gas boiler equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521073882.0U CN205299569U (en) | 2015-12-21 | 2015-12-21 | Residual heat from flue gas system and gas boiler equipment |
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| CN205299569U true CN205299569U (en) | 2016-06-08 |
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| CN201521073882.0U Active CN205299569U (en) | 2015-12-21 | 2015-12-21 | Residual heat from flue gas system and gas boiler equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109990457A (en) * | 2019-03-20 | 2019-07-09 | 浙江力巨热能设备有限公司 | A kind of high efficiency burnt gas hot-water boiler and its control method |
-
2015
- 2015-12-21 CN CN201521073882.0U patent/CN205299569U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109990457A (en) * | 2019-03-20 | 2019-07-09 | 浙江力巨热能设备有限公司 | A kind of high efficiency burnt gas hot-water boiler and its control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 065001, 333 Peng Road, Langfang economic and Technological Development Zone, Hebei, China Patentee after: Tongfang energy saving equipment Co., Ltd. Address before: 065001, 333 Peng Road, Langfang economic and Technological Development Zone, Hebei, China Patentee before: TONGFANG KAWASAKI ADVANCED ENERGY-SAVING MACHINE CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |