CN104564189B - The Application way of residual heat of electric power plant - Google Patents
The Application way of residual heat of electric power plant Download PDFInfo
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- CN104564189B CN104564189B CN201410738069.4A CN201410738069A CN104564189B CN 104564189 B CN104564189 B CN 104564189B CN 201410738069 A CN201410738069 A CN 201410738069A CN 104564189 B CN104564189 B CN 104564189B
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- water
- heat pump
- heat exchanger
- power plant
- heat
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
- Y02E20/14—Combined heat and power generation [CHP]
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
An Application way for residual heat of electric power plant, adopts corresponding by the water resource heat pump on electric turbine, vapour condenser, cooling tower, at least three circulating water lines being connected in parallel between described vapour condenser and described cooling tower, at least three difference water resource heat pump described in each and in the heating system formed with the water water-to-water heat exchanger of the connection of described water resource heat pump and connecting pipeline and annex.The Application way of residual heat of electric power plant provided by the invention, utilizing water resource heat pump to reclaim power plant's low-temperature circulating water heat replaces high enthalpy supersaturated steam to supply the moisturizing preheating heat load of power plant's bathing heat load, inside and outside heat supply in winter, boiler circuit, realize Waste Heat Reuse, energy-saving and emission-reduction, improve Power Plant Fuel utilization ratio, reduce power plant cost.
Description
Technical field
The invention belongs to balance of power plant field, particularly relate to a kind of Application way of residual heat of electric power plant.
Background technique
In current cogeneration power plant, the direct heating heat supply network backwater in heat exchangers for district heating that draws gas of general sucking condensing turbine, confess after being generally heated to about 120 ~ 130 DEG C, need the extraction pressure of steam turbine at more than 0.3MPa for this reason, corresponding condensing temperature is more than 135 DEG C, even and if under electric turbine maximum duty, still a large amount of waste heat is had to be discharged into environment by recirculated cooling water, if can by this part heat recovery, the efficiency of energy utilization of power plant will be made to be improved, cooling water evaporation amount can be reduced simultaneously, save valuable water resources, and the heat reduced to environment and steam discharge.
Generation current factory heat load comprises the moisturizing preheating heat load of our factory's bathing heat load, inside and outside heat supply in winter and boiler circuit.This part heat load at present general extraction out by power station steam directly supplies, usually following result is caused: (1) high-quality steam thermal source low-quality uses (end enthalpy saturated vapour can meet the demands and but use high enthalpy supersaturated steam), causes source of the gas to waste; (2) steam length is apart from the condensing hot air furnace difficulty of the pure water quality of outer confession, causes water waste; (3) do not do work or take out outside the steam that do not do work completely, causing power generating capacity to reduce.More than both increase power plant's operating cost.Therefore need to provide a kind of method that can utilize residual heat of electric power plant.
Summary of the invention
Therefore, the invention provides a kind of Application way of residual heat of electric power plant, adopt by the water resource heat pump on electric turbine, vapour condenser, cooling tower, at least three circulating water lines being connected in parallel between described vapour condenser and described cooling tower, at least three corresponding with water resource heat pump described in each respectively and in the heating system formed with the water water-to-water heat exchanger of the connection of described water resource heat pump and connecting pipeline and annex, comprise the following steps:
A, supersaturated steam become exhaust steam and enter described vapour condenser after doing work in electric turbine;
B, described exhaust steam are discharged becoming water of condensation after the circulating water heating be circulated in described vapour condenser and described cooling tower;
C, described circulating water, through water resource heat pump described in each, heat in the described circulating water line of rear inflow to the secondary cycle water be circulated in described water resource heat pump and described water water-to-water heat exchanger corresponding with it;
D, described secondary cycle water heat the secondary water by described water water-to-water heat exchanger.
Heating water, bath water and/or power plant's moisturizing is adopted to provide described secondary water.
The described water resource heat pump of described circulating water process comprises that water intake is parallel on the water outlet of described vapour condenser, water outlet is parallel to the first water resource heat pump, second water source heat pump and the 3rd water resource heat pump on the water intake of described vapour condenser.
Described circulating water increases successively through the distance of described first water resource heat pump, second water source heat pump and the 3rd water resource heat pump.
Described water water-to-water heat exchanger comprises the first water water-to-water heat exchanger, the second water water-to-water heat exchanger and the 3rd water water-to-water heat exchanger, described first water water-to-water heat exchanger coordinates with described first water resource heat pump, described second water water-to-water heat exchanger coordinates with described second water source heat pump, and described 3rd water water-to-water heat exchanger coordinates with described 3rd water resource heat pump; Or described second water water-to-water heat exchanger directly can coordinate with described vapour condenser and described cooling tower.
Described heating water heats through described 3rd water water-to-water heat exchanger.
The moisturizing of described power plant enters described first water water-to-water heat exchanger and carries out double heating and be delivered in oxygen-eliminating device after described second water water-to-water heat exchanger enters power plant's water chemical treatment system.
Also comprise the 4th water water-to-water heat exchanger, described 4th water water-to-water heat exchanger coordinates with described 3rd water resource heat pump and heats described bath water.
The water intake of all described water resource heat pumps is connected to the water outlet of described vapour condenser, and water outlet is connected to the water inlet of described vapour condenser; Or the water intake of all described water resource heat pumps is connected to the water outlet of described vapour condenser, water outlet is connected to the water inlet of described cooling tower; Or the water intake of all described water resource heat pumps is connected to the water outlet of described vapour condenser, water outlet is connected in series in the water inlet of described cooling tower.
Described circulating water is circulated between water resource heat pump described in each and described vapour condenser, described cooling tower by water resource heat pump feed-water pump, and described secondary cycle water is circulated in water resource heat pump described in each by water resource heat pump secondary cycle pump and between the described water water-to-water heat exchanger corresponded.
The Application way of residual heat of electric power plant provided by the invention, utilizing water resource heat pump to reclaim power plant's low-temperature circulating water heat replaces high enthalpy supersaturated steam to supply the moisturizing preheating heat load of power plant's bathing heat load, inside and outside heat supply in winter, boiler circuit, realize Waste Heat Reuse, energy-saving and emission-reduction, improve Power Plant Fuel utilization ratio, reduce power plant cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the Application way of residual heat of electric power plant provided by the invention;
Fig. 2 is another structural representation of the Application way of residual heat of electric power plant provided by the invention;
Fig. 3 is the operating diagram in winter of the Application way of residual heat of electric power plant provided by the invention;
Fig. 4 is the operating diagram in summer of the Application way of residual heat of electric power plant provided by the invention;
Fig. 5 is the schematic diagram of the embodiment 2 of the Application way of residual heat of electric power plant provided by the invention;
Fig. 6 is the schematic diagram of the embodiment 3 of the Application way of residual heat of electric power plant provided by the invention.
Embodiment
Also the present invention is described in detail by reference to the accompanying drawings below by specific embodiment.
The Application way of a kind of residual heat of electric power plant as shown in Figure 1 to Figure 3, adopt the water resource heat pump 4 described in each of water resource heat pump 4, at least three difference on being connected in parallel between described vapour condenser 2 and described cooling tower 3 by electric turbine 1, vapour condenser 2, cooling tower 3, at least three circulating water line 21 corresponding and in the heating system formed with the water water-to-water heat exchanger 5 of the connection of described water resource heat pump 4 and connecting pipeline and annex, comprise the following steps:
A, supersaturated steam become exhaust steam and enter described vapour condenser 2 after doing work in electric turbine 1;
B, described exhaust steam are discharged becoming water of condensation after the circulating water heating be circulated in described vapour condenser 2 and described cooling tower 3;
C, described circulating water, through water resource heat pump 4 described in each, heat in the described circulating water line 21 of rear inflow to the secondary cycle water be circulated in described water resource heat pump 4 and described water water-to-water heat exchanger 5 corresponding with it;
D, described secondary cycle water heat the secondary water by described water water-to-water heat exchanger 5.
Heating water, bath water and/or power plant's moisturizing is adopted to provide described secondary water.
The described water resource heat pump 4 of described circulating water process comprises that water intake is parallel on the water outlet of described vapour condenser 2, water outlet is parallel to the first water resource heat pump 41, second water source heat pump 42 and the 3rd water resource heat pump 43 on the water intake of described vapour condenser 2.
Described circulating water increases successively through the distance of described first water resource heat pump 41, second water source heat pump 42 and second water source heat pump 43.
Described water water-to-water heat exchanger 5 comprises the first water water-to-water heat exchanger 51, second water water-to-water heat exchanger 52 and the 3rd water water-to-water heat exchanger 53, described first water water-to-water heat exchanger 51 coordinates with described first water resource heat pump 41, described second water water-to-water heat exchanger 52 coordinates with described second water source heat pump 42, and described 3rd water water-to-water heat exchanger 53 coordinates with described second water source heat pump 43; Or described second water water-to-water heat exchanger 52 directly can coordinate with described vapour condenser 2 and described cooling tower 3.
Described heating water heats through described 3rd water water-to-water heat exchanger 53.
The moisturizing of described power plant enters described first water water-to-water heat exchanger 51 and carries out double heating and be delivered in oxygen-eliminating device after described second water water-to-water heat exchanger 52 enters power plant's water chemical treatment system.
Also comprise the 4th water water-to-water heat exchanger 54, described 4th water water-to-water heat exchanger 54 coordinates with described 3rd water resource heat pump 43 and heats described bath water.
The water intake of all described water resource heat pumps is connected to the water outlet of described vapour condenser, and water outlet is connected to the water inlet of described vapour condenser.
Described circulating water is circulated in described in each between water resource heat pump 4 and described vapour condenser 2 by water resource heat pump feed-water pump 6, and described secondary cycle water is circulated in water resource heat pump described in each by water resource heat pump secondary cycle pump 7 and between the described water water-to-water heat exchanger corresponded.
Preferred described water water-to-water heat exchanger 5 is water water plate type heat exchanger.
Embodiment 1
As shown in Figure 1, supersaturated steam passes into described electric turbine 1 to carry out doing work and becomes exhaust steam and discharge described electric turbine 1, described exhaust steam becomes water of condensation and discharges after passing into the heat release of described vapour condenser 2, described circulating water drives circulation between described vapour condenser 2 and described cooling tower 3 by water resource heat pump feed-water pump and carry out exchange heat with described exhaust steam in described vapour condenser;
Described circulating water enters described first water resource heat pump 41 by the first water resource heat pump feed-water pump 61, and heat is passed to the secondary cycle water be circulated between described first water resource heat pump 41 and described first water water plate type heat exchanger 51;
Described circulating water enters described second water source heat pump 42 by second water source heat pump feed-water pump 62, and heat is passed to the secondary cycle water be circulated between described second water source heat pump 42 and described second water water plate type heat exchanger 52;
Power plant's moisturizing passes into the former pond of water chemical treatment by power plant's moisturizing water source and is pumped into the second water water plate type heat exchanger 42 through water chemical treatment, carries out first time heat by the secondary cycle water be circulated between described second water source heat pump 42 and described second water water plate type heat exchanger 52;
As shown in Figure 2, when in described vapour condenser, water-exit temperature is higher, the water intake of described second water water plate type heat exchanger 52 can be made to be connected directly to the water outlet of described vapour condenser 2, and the water outlet of described second water water plate type heat exchanger 52 is connected directly to the water inlet of cooling tower 3; Or the water intake of described second water water plate type heat exchanger 52 is connected directly to the water outlet of described vapour condenser 2, after the water outlet of the water outlet of described second water water plate type heat exchanger 52 and the water outlet of described first water resource heat pump, described 3rd water resource heat pump crosses, be connected to the water inlet of cooling tower 3.
Power plant's moisturizing flows into after power plant's water chemical treatment system processes and flows into water chemical treatment product pond after first time heating, send into the first water water plate type heat exchanger 41 by power plant's small pump, carry out second time by the secondary cycle water be circulated between described first water resource heat pump 41 and described first water water plate type heat exchanger 51 and heat;
Power plant's moisturizing is sent into oxygen-eliminating device and is carried out work after second time heating.
Described circulating water enters described 3rd water resource heat pump 43 by the 3rd water resource heat pump feed-water pump 63, and heat is passed to the secondary cycle water be circulated between described 3rd water resource heat pump 43 and described 4th water water plate type heat exchanger 44;
Bath water sends into the 4th water water plate type heat exchanger 54 by bathing raw water service pump and the secondary cycle water be circulated between described 3rd water resource heat pump 43 and described 4th water water plate type heat exchanger 54 carries out exchange heat;
Heating water sends into the 3rd water water plate type heat exchanger 53 by heating circulating water pump and the secondary cycle water be circulated between described 3rd water resource heat pump 43 and described 3rd water water plate type heat exchanger 53 carries out exchange heat;
Wherein, as shown in Figure 3 and Figure 4, the 3rd water water plate type heat exchanger 53 place is provided with switch, in time not needing heating summer, and closing switch, the 3rd water water plate type heat exchanger 53 does not carry out heat exchange work; In time needing heating winter, open switch, the 3rd water water plate type heat exchanger 53 carries out heat exchange work.
Embodiment 2
The water intake of all described water resource heat pumps 4 of volume is connected to the water outlet of described vapour condenser 2 as shown in Figure 5, and water outlet is connected to the water inlet of described cooling tower 3.
Described circulating water flows into described water resource heat pump 4 by water resource heat pump feed-water pump 6 by described vapour condenser 2, and be flowed directly in described cooling tower 3 by the water outlet of described water resource heat pump 4 and circulate, described secondary cycle water is circulated in water resource heat pump 4 described in each by water resource heat pump secondary cycle pump 7 and between the described water water-to-water heat exchanger 5 corresponded.
Embodiment 3
The water intake of all described water resource heat pump 4 is as shown in Figure 6 connected to the water outlet of described vapour condenser 2, and water outlet is connected in series in the water inlet of described cooling tower 3.
Described circulating water flows into described water resource heat pump 4 by water resource heat pump feed-water pump 6 by described vapour condenser 2, by the water outlet of described water resource heat pump 4 flow out converge after flow in described cooling tower 3 and circulate, described secondary cycle water is circulated in water resource heat pump 4 described in each by water resource heat pump secondary cycle pump 7 and between the described water water-to-water heat exchanger 5 corresponded.
Only the preferred embodiment of the present invention by the above; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the Application way of a residual heat of electric power plant, it is characterized in that: adopt by the water resource heat pump on electric turbine, vapour condenser, cooling tower, at least three circulating water lines being connected in parallel between described vapour condenser and described cooling tower, at least three corresponding with water resource heat pump described in each respectively and in the heating system formed with the water water-to-water heat exchanger of the connection of described water resource heat pump and connecting pipeline and annex, comprise the following steps:
A, supersaturated steam become exhaust steam and enter described vapour condenser after doing work in electric turbine;
B, described exhaust steam are discharged becoming water of condensation after the circulating water heating be circulated in described vapour condenser and described cooling tower;
C, described circulating water, through water resource heat pump described in each, heat in the described circulating water line of rear inflow to the secondary cycle water be circulated in described water resource heat pump and described water water-to-water heat exchanger corresponding with it;
D, described secondary cycle water heat the secondary water by described water water-to-water heat exchanger.
2. Application way according to claim 1, is characterized in that: adopt heating water, bath water and/or power plant's moisturizing to provide described secondary water.
3. Application way according to claim 2, is characterized in that: the described water resource heat pump of described circulating water process comprises that water intake is parallel on the water outlet of described vapour condenser, water outlet is parallel to the first water resource heat pump, second water source heat pump and the 3rd water resource heat pump on the water intake of described vapour condenser.
4. Application way according to claim 3, is characterized in that: described circulating water increases successively through the distance of described first water resource heat pump, second water source heat pump and the 3rd water resource heat pump.
5. Application way according to claim 3, it is characterized in that: described water water-to-water heat exchanger comprises the first water water-to-water heat exchanger, the second water water-to-water heat exchanger and the 3rd water water-to-water heat exchanger, described first water water-to-water heat exchanger coordinates with described first water resource heat pump, described second water water-to-water heat exchanger coordinates with described second water source heat pump, and described 3rd water water-to-water heat exchanger coordinates with described 3rd water resource heat pump; Or described second water water-to-water heat exchanger directly can coordinate with described vapour condenser and described cooling tower.
6. Application way according to claim 5, is characterized in that: described heating water heats through described 3rd water water-to-water heat exchanger.
7. Application way according to claim 5, is characterized in that: the moisturizing of described power plant enters described first water water-to-water heat exchanger and carries out double heating and be delivered in oxygen-eliminating device after described second water water-to-water heat exchanger enters power plant's water chemical treatment system.
8. Application way according to claim 5, is characterized in that: also comprise the 4th water water-to-water heat exchanger, and described 4th water water-to-water heat exchanger coordinates with described 3rd water resource heat pump and heats described bath water.
9. Application way according to claim 1, is characterized in that: the water intake of all described water resource heat pumps is connected to the water outlet of described vapour condenser, and water outlet is connected to the water inlet of described vapour condenser; Or the water intake of all described water resource heat pumps is connected to the water outlet of described vapour condenser, water outlet is connected to the water inlet of described cooling tower; Or the water intake of all described water resource heat pumps is connected to the water outlet of described vapour condenser, water outlet is connected in series in the water inlet of described cooling tower.
10. Application way according to claim 1, it is characterized in that: described circulating water is circulated in water resource heat pump described in each by water resource heat pump feed-water pump and between described vapour condenser and described cooling tower, described secondary cycle water is circulated in water resource heat pump described in each by water resource heat pump secondary cycle pump and between the described water water-to-water heat exchanger corresponded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738069.4A CN104564189B (en) | 2014-12-05 | 2014-12-05 | The Application way of residual heat of electric power plant |
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| CN201410738069.4A CN104564189B (en) | 2014-12-05 | 2014-12-05 | The Application way of residual heat of electric power plant |
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| CN104564189A CN104564189A (en) | 2015-04-29 |
| CN104564189B true CN104564189B (en) | 2016-03-30 |
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| CN108534579A (en) * | 2018-02-24 | 2018-09-14 | 陈京帅 | A kind of energy conserving system and method for steam waste heat recycling |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825115A (en) * | 1971-08-03 | 1973-04-02 | ||
| US4093868A (en) * | 1974-04-29 | 1978-06-06 | Manning John I | Method and system utilizing steam turbine and heat pump |
| EP1391588A1 (en) * | 2002-08-13 | 2004-02-25 | GREENPOWER Anlagenerrichtungs- und Betriebs-GmbH | method and apparatus for generating of force and heat from waste heat or from fuels |
| CN202118984U (en) * | 2011-06-25 | 2012-01-18 | 双良节能***股份有限公司 | Energy-saving heating system of thermal power plant |
| CN102705021A (en) * | 2012-05-25 | 2012-10-03 | 国电龙源电力技术工程有限责任公司 | Cold end optimizing and residual heat utilizing system for steam turbine |
| CN202546901U (en) * | 2012-03-28 | 2012-11-21 | 浙江大学 | Heating load adjustable central heating system with steam and water heat sources |
-
2014
- 2014-12-05 CN CN201410738069.4A patent/CN104564189B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825115A (en) * | 1971-08-03 | 1973-04-02 | ||
| US4093868A (en) * | 1974-04-29 | 1978-06-06 | Manning John I | Method and system utilizing steam turbine and heat pump |
| EP1391588A1 (en) * | 2002-08-13 | 2004-02-25 | GREENPOWER Anlagenerrichtungs- und Betriebs-GmbH | method and apparatus for generating of force and heat from waste heat or from fuels |
| CN202118984U (en) * | 2011-06-25 | 2012-01-18 | 双良节能***股份有限公司 | Energy-saving heating system of thermal power plant |
| CN202546901U (en) * | 2012-03-28 | 2012-11-21 | 浙江大学 | Heating load adjustable central heating system with steam and water heat sources |
| CN102705021A (en) * | 2012-05-25 | 2012-10-03 | 国电龙源电力技术工程有限责任公司 | Cold end optimizing and residual heat utilizing system for steam turbine |
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