CN203719099U - Residual and waste heat recycling device for coal-fired power plant - Google Patents
Residual and waste heat recycling device for coal-fired power plant Download PDFInfo
- Publication number
- CN203719099U CN203719099U CN201420072212.6U CN201420072212U CN203719099U CN 203719099 U CN203719099 U CN 203719099U CN 201420072212 U CN201420072212 U CN 201420072212U CN 203719099 U CN203719099 U CN 203719099U
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- China
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- heat
- power plant
- water
- circulating pump
- flue gas
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Abstract
The utility model discloses a residual and waste heat recycling device for a coal-fired power plant, and belongs to the technical fields of energy saving and heat exchange. In the residual and waste heat recycling device, a first outlet pipeline of a circulating pump is connected with a water inlet pipeline of a power plant, the lower segment of a residual heat recycling device, a water outlet pipeline of the power plant and a water mixing pipeline in sequence; a second outlet pipeline of the circulating pump is connected with the water mixing pipeline through a flue gas heat exchange device. Sewage drained by a boiler enters the upper segment of the residual heat recycling device through a sewage draining inlet pipeline of the boiler and is drained from a sewage draining outlet pipeline of the boiler, and the flue gas enters through a flue gas inlet pipeline and is exhausted from a chimney after exchanging heat with the flue gas heat exchange device. Heat of the flue gas is recycled through the flue gas heat exchange device, and heat of sewage drained by the boiler is recycled through the residual heat recycling device. The problems of high-temperature discharge of power plant flue gas and boiler sewage are solved, and thermal pollution is reduced; meanwhile, the consumption of the resources of coal, gas, power and the like for producing water for a heating device is lowered, energy is saved, and the heat supply cost is lowered greatly.
Description
Technical field
The utility model relates to the remaining waste heat recovery plant of a kind of coal-fired power plant, belongs to energy-conservation and heat transfer technology field.
Background technology
At present, the flue gas of coal-fired power plant discharge, temperature is 130-150 DEG C of just directly discharge, and the sewer temperature of boiler is also arranged outside directly at 100-110 DEG C.The discharge of these flue gases and sewer, not only wastes resource, and pollutes plant environment.How used heat more than these is effectively recycled, realized energy-saving and emission-reduction, also do not have feasible way to solve at present.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of coal-fired power plant remaining waste heat recovery plant, coal-fired power plant is discharged naturally and the waste heat of unserviceable flue gas and boiler blowdown water, carries out heat collection and heat and replaces.
The technical solution adopted in the utility model is: the remaining waste heat recovery plant of a kind of coal-fired power plant, it comprises smoke heat replacing device and circulating pump, it also comprises hot water storage tank and waste-heat recovery device, Water of Power Plant enters circulating pump from pump entry pipeline, is pumped respectively by circulating pump the first outlet conduit and circulating pump the second outlet conduit; Described circulating pump the first outlet conduit is connected with lower journey, Water of Power Plant outlet conduit and the mixed waterpipe of Water of Power Plant inlet duct, waste-heat recovery device successively, described circulating pump the second outlet conduit connects mixed waterpipe through smoke heat replacing device, and described mixed waterpipe is connected to hot water storage tank; The upper journey that boiler blowdown water enters waste-heat recovery device through boiler blowdown water inlet duct is discharged by boiler blowdown water outlet conduit; Flue gas through smoke inlet pipeline enter with smoke heat replacing device heat exchange after discharged by chimney.
Described smoke heat replacing device adopts heat pipe-type smoke heat replacing device.
Described hot water storage tank is the stainless steel phase transition thermal storage water tank that is provided with heat accumulating element.
The beneficial effects of the utility model are: the remaining waste heat recovery plant of this coal-fired power plant adopts circulating pump the first outlet conduit to be connected with lower journey, Water of Power Plant outlet conduit and the mixed waterpipe of Water of Power Plant inlet duct, waste-heat recovery device successively, and circulating pump the second outlet conduit connects mixed waterpipe through smoke heat replacing device.The upper journey that boiler blowdown water enters waste-heat recovery device through boiler blowdown water inlet duct is discharged by boiler blowdown water outlet conduit, flue gas through smoke inlet pipeline enter with smoke heat replacing device heat exchange after discharged by chimney.The heat of flue gas fire coal being produced by smoke heat replacing device reclaims, and by waste-heat recovery device, the heat of boiler blowdown water is replaced to recovery.Solve the high temperature discharge of coal-fired power plant's flue gas and boiler blowdown water, reduced thermal pollution, reduced the resources such as the coal that coal-fired power plant consumes for heater water, gas, electricity simultaneously, saved the energy.Because the thermal source adopting is the remaining used heat that coal-fired power plant emits, thereby heat cost is reduced greatly.
Brief description of the drawings
Fig. 1 is the flow chart of the remaining waste heat recovery plant of a kind of coal-fired power plant.
In figure: 1, smoke heat replacing device, 1a, smoke inlet pipeline, 1b, chimney, 2, circulating pump, 2a, pump entry pipeline, 2b, circulating pump the first outlet conduit, 2c, circulating pump the second outlet conduit, 3, hot water storage tank, 4, waste-heat recovery device, 4a, Water of Power Plant inlet duct, 4b, Water of Power Plant outlet conduit, 4c, boiler blowdown water inlet duct, 4d, boiler blowdown water outlet conduit, 5, mixed waterpipe.
Detailed description of the invention
Referring to accompanying drawing, the utility model is described further.
Fig. 1 shows the flow chart of the remaining waste heat recovery plant of a kind of coal-fired power plant.This retracting device comprises heat pipe-type smoke heat replacing device 1 and circulating pump 2.Water of Power Plant enters circulating pump 2 by pump entry pipeline 2a, is pumped respectively by circulating pump the first outlet conduit 2b and circulating pump the second outlet conduit 2c; Lead up to the Water of Power Plant of circulating pump the first outlet conduit 2b successively by lower journey, Water of Power Plant outlet circulating pump the first outlet conduit 4b and the mixed waterpipe 5 of Water of Power Plant entrance circulating pump the first outlet conduit 4a, waste-heat recovery device 4, enter stainless steel phase transition thermal storage water tank 3; Separately lead up to the Water of Power Plant of circulating pump the second outlet conduit 2c through smoke heat replacing device 1 and mixed waterpipe 5, enter stainless steel phase transition thermal storage water tank 3.The upper journey that boiler blowdown water enters waste-heat recovery device 4 through boiler blowdown water inlet duct 4c is discharged by boiler blowdown water outlet conduit 4d; Flue gas enters smoke heat replacing device 1 through smoke inlet pipeline 1a and discharges from chimney 1b.Be stored in 80 DEG C of hot water in stainless steel phase transition thermal storage water tank 3, send back in device high-temperature water pipeline.
Hot water storage tank 3 is stainless steel phase transition thermal storage water tank, wherein contains heat accumulating element, and the temperature requirement of device water is when high, phase-change heat accumulation element release heat, and when the temperature requirement of device water is low, phase-change heat accumulation element absorbs heat and also stores for subsequent use.Fill phase change heat storage material in stainless steel water tank, its phase transition temperature is 75 DEG C, according to heat number, determine the quantity of volume and the phase-change heat accumulation element of water tank.Remaining Waste Heat Recovery scene does not need civil engineering, only heat pipe-type smoke heat replacing device need be seated in boiler exhaust gas pipeline, container is placed on to smooth ground, in connection boiler low-temperature sewer pipeline and power plant's device water can absorb waste heat into and out of pipeline, add the device water of steam power plant.
Claims (3)
1. the remaining waste heat recovery plant of coal-fired power plant, it comprises smoke heat replacing device (1) and circulating pump (2), it is characterized in that: it also comprises hot water storage tank (3) and waste-heat recovery device (4), Water of Power Plant enters circulating pump (2) from pump entry pipeline (2a), is pumped respectively by circulating pump the first outlet conduit (2b) and circulating pump the second outlet conduit (2c); Described circulating pump the first outlet conduit (2b)) be connected with lower journey, Water of Power Plant outlet conduit (4b) and the mixed waterpipe (5) of Water of Power Plant inlet duct (4a), waste-heat recovery device (4) successively, described circulating pump the second outlet conduit (2c) connects mixed waterpipe (5) through smoke heat replacing device (1), and described mixed waterpipe (5) is connected to hot water storage tank (3); The upper journey that boiler blowdown water enters waste-heat recovery device (4) through boiler blowdown water inlet duct (4c) is discharged by boiler blowdown water outlet conduit (4d); Flue gas through smoke inlet pipeline (1a) enter with smoke heat replacing device (1) heat exchange after discharged by chimney (1b).
2. the remaining waste heat recovery plant of a kind of coal-fired power plant according to claim 1, is characterized in that: described smoke heat replacing device (1) adopts heat pipe-type smoke heat replacing device.
3. the remaining waste heat recovery plant of a kind of coal-fired power plant according to claim 1, is characterized in that: described hot water storage tank (3) is for being provided with the stainless steel phase transition thermal storage water tank of heat accumulating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420072212.6U CN203719099U (en) | 2014-02-20 | 2014-02-20 | Residual and waste heat recycling device for coal-fired power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420072212.6U CN203719099U (en) | 2014-02-20 | 2014-02-20 | Residual and waste heat recycling device for coal-fired power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203719099U true CN203719099U (en) | 2014-07-16 |
Family
ID=51158245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420072212.6U Expired - Fee Related CN203719099U (en) | 2014-02-20 | 2014-02-20 | Residual and waste heat recycling device for coal-fired power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203719099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796026A (en) * | 2017-12-08 | 2018-03-13 | 李尚福 | Waste heat gas environmental protection retracting device |
-
2014
- 2014-02-20 CN CN201420072212.6U patent/CN203719099U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796026A (en) * | 2017-12-08 | 2018-03-13 | 李尚福 | Waste heat gas environmental protection retracting device |
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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: 20140716 Termination date: 20180220 |