CN202253581U - Energy-saving softened water heating device for thermal power plant - Google Patents

Energy-saving softened water heating device for thermal power plant Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
branch road
heat pump
water
pump
power plant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011203366929U
Other languages
Chinese (zh)
Inventor
李鸿斌
马茂田
张青哲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HEBEI YONGHONG ENERGY-SAVING TECHNOLOGY Co Ltd
Original Assignee
HEBEI YONGHONG ENERGY-SAVING TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HEBEI YONGHONG ENERGY-SAVING TECHNOLOGY Co Ltd filed Critical HEBEI YONGHONG ENERGY-SAVING TECHNOLOGY Co Ltd
Priority to CN2011203366929U priority Critical patent/CN202253581U/en
Application granted granted Critical
Publication of CN202253581U publication Critical patent/CN202253581U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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

A kind of energy-saving steam power plant demineralized water heater
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).
CN2011203366929U 2011-09-08 2011-09-08 Energy-saving softened water heating device for thermal power plant Expired - Fee Related CN202253581U (en)

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

Family

ID=46114817

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

Country Status (1)

Country Link
CN (1) CN202253581U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
KR100975276B1 (en) Local heating water feeding system using absorbing type heat pump
CN204730303U (en) The heating system of the 12MW small cogeneration unit under a kind of underrun operating mode
US20210239326A1 (en) Energy-saving system using electric heat pump to deeply recover flue gas waste heat from heat power plant for district heating
CN106523053B (en) Solar heat and steam power plant's coupled electricity-generation and hot energy storage combined system and implementation method
CN202869079U (en) Condensate water heating device utilizing power plant circulating cooling water waste heat recovered by jet-type heat pump
CN204301356U (en) Sugar plant circulation cooling water system waste heat hydraulic recovery energy saver
CN203099962U (en) Circulating-water direct heating system of thermal power plant
CN202253581U (en) Energy-saving softened water heating device for thermal power plant
CN101968236A (en) System for realizing combined heating based on extraction steam for heating and lithium bromide unit
CN202868822U (en) Power plant flue gas waste heat recovering device utilizing jet-type heat pump
CN209054540U (en) Nuclear energy heap comprehensive utilization system for heat energy
CN202195715U (en) Power plant steam-water system with an exhaust steam heat exchange system
CN202023600U (en) CHP (combined heat and power) heat supply system for efficiently recovering exhaust steam waste heat of power station steam turbine
CN201779751U (en) Heating system combining lithium bromide machine set with heating steam bleeding
CN203594565U (en) Steam-driven driving system for solar thermal power generation large power pump
CN206309434U (en) Solar heat and steam power plant's coupled electricity-generation and hot energy storage combined system
CN112611010B (en) Adjusting method of flexible adjusting system for power generation load of multi-heat-source cogeneration unit
CN202869080U (en) Device for recovering low-pressure steam and cooling water waste heat of waste heat power generation system
CN202869081U (en) Device for recovering flue gas and cooling water waste heat of waste heat power generation system
CN201671670U (en) Condenser circulating water heating device for power plant
CN206310568U (en) Feed pump turbine low-vacuum-operating circulating water heating system
CN206478721U (en) A kind of Circulating Cooling Water of Power Plant condensation waste heat utilizes system
CN202303589U (en) Prefabricated radiant heating system with overall consideration of heating, air conditioning and sanitary hot water
CN103628939B (en) A kind of method improving steam turbine set UTILIZATION OF VESIDUAL HEAT IN
CN209960462U (en) Device for heating boiler feed water by utilizing heat pump to absorb waste heat of steam turbine

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