CN202253581U - Energy-saving softened water heating device for thermal power plant - Google Patents
Energy-saving softened water heating device for thermal power plant Download PDFInfo
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- CN202253581U CN202253581U CN2011203366929U CN201120336692U CN202253581U CN 202253581 U CN202253581 U CN 202253581U CN 2011203366929 U CN2011203366929 U CN 2011203366929U CN 201120336692 U CN201120336692 U CN 201120336692U CN 202253581 U CN202253581 U CN 202253581U
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Abstract
An energy-saving softened water heating device for a thermal power plant is used for solving the problem that exhaust-steam condensation heat of a wet cooling unit for a thermal power plant is not reasonably used. The technical scheme includes that the energy-saving softened water heating device comprises a condenser and water cooling tower circulating loop, and a boiler and softened water branch, and further comprises an absorbing type heat pump after improvement, a heat absorbing side inlet branch and a heat absorbing side outlet branch of the absorbing type heat pump are communicated with an inlet branch and an outlet branch of a water cooling tower respectively, and a heat supply side inlet branch and a heat supply side outlet branch of the absorbing type heat pump are in bypass communication between a delivery pump and a deaerator. By the aid of the absorbing type heat pump, on one hand, a heat source of cooling water is used for heating softened water; and on the other hand, cooling media of a condenser and a large amount of cooling water can be saved. Owing to high energy efficiency ratio of the heat pump, the softened water can be heated to 80 DEG C, and coal is evidently saved. Moreover, evaporation loss of the cooling water is decreased, and the overall heat utilization rate of the power plant reaches 60%-65%.
Description
Technical field
The utility model relates to a kind of power plant power-saving technology, especially utilizes the device of heat pump power plant demineralized water, belongs to the thermal power generation technical field.
Background technology
The type of cooling of discharging general vapour according to thermal power plant steam turbine afterbody is different, is clammy unit and Air-cooled Unit with the thermoelectric generator component, and clammy unit utilizes recirculated water cooling exhaust steam, reaches the purpose of cooling circulating water again through recirculated water and air direct heat transfer; Air-cooled Unit adopts the heat radiation of major diameter axial flow blower forced ventilation.At present; Clammy unit still is the problem that Air-cooled Unit all has energy waste; As as far as clammy unit: steam turbine draining vapour condensation heat is not used appropriately on the one hand; Taken away steam turbine draining vapour condensation heat by clammy unit cooling water, caused the significant wastage of primary energy, made the overall heat energy utilization rate in power plant have only 35%-40%; Boiler of power plant needs primary energy such as coal combustion, natural gas usually on the other hand, and the water of normal temperature is heated to high-temperature-hot-water or low pressure steam, and course of work kind not only energy consumption is very high, and inevitably will discharge a large amount of pollutants.The problems referred to above have increased enterprise's cost of electricity-generating.
The utility model content
The utility model is used to overcome the defective of prior art and a kind of saving energy consumption is provided, the energy-saving steam power plant demineralized water heater that the overall heat energy utilization rate in power plant is improved.
The alleged problem of the utility model is solved by following technical scheme:
A kind of energy-saving steam power plant demineralized water heater; It comprises condenser-cooling tower closed circuit and boiler-demineralized water branch road; Said condenser-cooling tower closed circuit is provided with by the water circulating pump of pipeline connection, cooling tower and condenser; Said boiler-demineralized water branch road is provided with by the chemical tendering water tank of pipeline connection, demineralized water delivery pump, oxygen-eliminating device, feed pump, high-pressure heater and boiler; It is characterized in that: said device also is provided with absorption heat pump, and said absorption heat pump heat absorbing side inlet branch road is communicated with cooling tower inlet branch road and outlet branch road respectively with the outlet branch road; Said absorption heat pump heat supply side entrance branch road and outlet branch road constitute bypass and are communicated with between delivery pump and oxygen-eliminating device.
Above-mentioned energy-saving steam power plant demineralized water heater, said absorption heat pump heat supply side entrance branch road are provided with second control valve and the 4th control valve, absorption heat pump heat supply side outlet branch road are provided with the 3rd control valve and the 5th control valve; Said absorption heat pump heat absorbing side inlet branch road is provided with the 7th control valve, absorption heat pump heat absorbing side outlet branch road is provided with the 6th control valve; Be provided with first control valve between said demineralized water delivery pump and the oxygen-eliminating device.
The utility model improves to the problem that existing steam power plant clammy unit exhaust steam condensation heat is not used appropriately; Between condenser-cooling tower closed circuit and softened water tank-boiler branch road, introduce absorption heat pump; The water of being discharged by condenser gets into cooling tower through heat pump heat absorption side draught heat drop Wen Houzai, and the water that softening water tank is discharged gets into boiler again after the heat pump heat supply side heats up.The utility model utilizes the thermal source of cooling water, thermoplastic water on the one hand through absorption heat pump is set; Can save the cooling medium of condenser on the other hand, practice thrift a large amount of cooling waters, because the high energy efficiency ratio of heat pump; Can be heated to 80 ℃ to demineralized water, effect of coal saving is obvious, and can save cooling water in a large number; Reduce the drain evaporation of cooling water, also solved the heated surface at the end of boiler cold end corrosion simultaneously, make the overall heat energy utilization rate in power plant reach 60%-65%; Improve the macroeconomic efficient in thermal power plant, reduced the discharging of environmental contaminants.
Description of drawings
Fig. 1 is the utility model sketch map.
Each label implication is following among the figure: 1. superheater, 2. boiler, 3. high-pressure heater, 4. feed pump, 5. first control valve; 6. chemical softened water tank, 7. demineralized water delivery pump, 8. second control valve, 9. the 3rd control valve, 10. oxygen-eliminating device, 11. the 4th control valves; 12. the 5th control valve, 13. the 6th control valves, 14. the 7th control valves, 15. absorption heat pumps; 16. water circulating pump, 17. cooling towers, 18. steam turbines, 19. condensers.
The specific embodiment
It is between the condenser-cooling tower closed circuit that has the clammy unit of steam power plant now and boiler-demineralized water branch road, to set up absorption heat pump that the utility model improves main points.Utilize absorption heat pump high energy efficiency ratio, the condenser recirculated cooling water is put forward the heat drop temperature, carrying heat is used for improving softening water tank chemical tendering coolant-temperature gage, reduce the generating set energy consumption.
Referring to Fig. 1, the said device of the utility model comprises condenser-cooling tower closed circuit and boiler-demineralized water branch road, constitutes closed circuit by water circulating pump 16, cooling tower 17, condenser 19 and pipeline in said condenser-cooling tower closed circuit.Said boiler-demineralized water branch road is provided with successively chemical tendering water tank 6, demineralized water delivery pump 7, oxygen-eliminating device 10, feed pump 4, high-pressure heater 3 and the boiler 2 by pipeline connection.Said device also is provided with absorption heat pump 15, and the absorption type heat pump power is provided by boiler platoon water.Said absorption heat pump heat absorbing side (right side) inlet branch road is communicated with cooling tower inlet branch road and outlet branch road respectively with the outlet branch road; Said absorption heat pump heat supply side (left side) inlet branch road and outlet branch road form bypass and are communicated with between delivery pump and oxygen-eliminating device.For ease of regulate, the control water yield, on the branch road of the heat supply side entrance of absorption heat pump, be provided with second control valve 8 and the 4th control valve 11, on absorption heat pump heat supply side outlet branch road, be provided with the 3rd control valve 9 and the 5th control valve 12; Be provided with the 7th control valve 14 on the absorption heat pump heat absorbing side inlet branch road, on absorption heat pump heat absorbing side outlet branch road, be provided with the 6th control valve 13; In addition, between demineralized water delivery pump 7 and oxygen-eliminating device 10, be provided with first control valve 5.
Still referring to Fig. 1, the utility model is incorporated into the heat absorbing side of absorption heat pump 15 with the cooling water in condenser and the cooling tower inlet branch road, after the absorption heat pump heat exchange, reaches cooling effect, afterwards by getting back to condenser 19 cooling of absorbing heat.The heat supply side that chemical tendering water gets into absorption heat pump heats, and heated afterwards demineralized water gets into oxygen-eliminating device 10 after feed pump 4 delivers into boiler 2.
This device is fit to the energy-conserving and emission-cutting technology transformation of clammy unit very much, and the engineering cost-recovering is fast.Because heat pump can be heated to 80 ℃ to demineralized water, effect of coal saving is obvious.And can save cooling water in a large number, reduce the drain evaporation of cooling water, also solve the heated surface at the end of boiler cold end corrosion simultaneously, make the overall heat energy utilization rate in power plant reach 60%-65%; Operational safety performance is high, can add bypath system during installation, the convenient device that utilizes heat pump power plant demineralized water that in unit operation, overhauls.
Claims (2)
1. energy-saving steam power plant demineralized water heater; It comprises condenser-cooling tower closed circuit and boiler-demineralized water branch road; Said condenser-cooling tower closed circuit is provided with by the water circulating pump of pipeline connection (16), cooling tower (17) and condenser (19); Said boiler-demineralized water branch road is provided with by the chemical tendering water tank (6) of pipeline connection, demineralized water delivery pump (7), oxygen-eliminating device (10), feed pump (4), high-pressure heater (3) and boiler (2); It is characterized in that: said device also is provided with absorption heat pump (15), and said absorption heat pump heat absorbing side inlet branch road is communicated with cooling tower inlet branch road and outlet branch road respectively with the outlet branch road; Said absorption heat pump heat supply side entrance branch road and outlet branch road constitute bypass and are communicated with between delivery pump and oxygen-eliminating device.
2. energy-saving steam power plant according to claim 1 demineralized water heater is characterized in that: said absorption heat pump heat supply side entrance branch road is provided with second control valve (8) and the 4th control valve (11), absorption heat pump heat supply side outlet branch road are provided with the 3rd control valve (9) and the 5th control valve (12); Said absorption heat pump heat absorbing side inlet branch road is provided with the 7th control valve (14), absorption heat pump heat absorbing side outlet branch road is provided with the 6th control valve (13); Be provided with first control valve (5) between said demineralized water delivery pump (7) and the oxygen-eliminating device (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203366929U CN202253581U (en) | 2011-09-08 | 2011-09-08 | Energy-saving softened water heating device for thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203366929U CN202253581U (en) | 2011-09-08 | 2011-09-08 | Energy-saving softened water heating device for thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202253581U true CN202253581U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203366929U Expired - Fee Related CN202253581U (en) | 2011-09-08 | 2011-09-08 | Energy-saving softened water heating device for thermal power plant |
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| Country | Link |
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| CN (1) | CN202253581U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644006A (en) * | 2013-11-29 | 2014-03-19 | 东方电气集团东方汽轮机有限公司 | Method for improving waste heat utilization of steam turbine unit |
| CN105650942A (en) * | 2016-03-25 | 2016-06-08 | 中冶南方工程技术有限公司 | Air energy heat pump water replenishing, deoxygenizing and air conditioning system |
| CN111649505A (en) * | 2020-06-15 | 2020-09-11 | 山东国仁节能科技有限公司 | Novel boiler continuous-exhaust waste heat recovery system |
-
2011
- 2011-09-08 CN CN2011203366929U patent/CN202253581U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644006A (en) * | 2013-11-29 | 2014-03-19 | 东方电气集团东方汽轮机有限公司 | Method for improving waste heat utilization of steam turbine unit |
| CN105650942A (en) * | 2016-03-25 | 2016-06-08 | 中冶南方工程技术有限公司 | Air energy heat pump water replenishing, deoxygenizing and air conditioning system |
| CN111649505A (en) * | 2020-06-15 | 2020-09-11 | 山东国仁节能科技有限公司 | Novel boiler continuous-exhaust waste heat recovery system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20120908 |