CN105953286A - Initial heat supply network station for waste heat utilization of coal-fired power plant - Google Patents
Initial heat supply network station for waste heat utilization of coal-fired power plant Download PDFInfo
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- CN105953286A CN105953286A CN201610469324.9A CN201610469324A CN105953286A CN 105953286 A CN105953286 A CN 105953286A CN 201610469324 A CN201610469324 A CN 201610469324A CN 105953286 A CN105953286 A CN 105953286A
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- supply network
- heat supply
- heat
- water
- heating
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- 239000002918 waste heat Substances 0.000 title abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 230000002209 hydrophobic effect Effects 0.000 claims description 12
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 238000002242 deionisation method Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/0092—Devices for preventing or removing corrosion, slime or scale
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses an initial heat supply network station for waste heat utilization of a coal-fired power plant. The initial heat supply network station comprises a condenser and a heat supply network station body. The condenser adopts exhausted steam of a high-back-pressure steam turbine to heat circulating water. The heat supply network station body is mainly composed of heat supply network circulation water pumps, an exhausted steam cooler and a heat supply network heater. The exhausted steam cooler, the heat supply network heater and the condenser operate in series. Three of the heat supply network circulation water pumps are circulation water pumps driven by a back-pressure steam turbine and used for operating, and the other one is an electrically driven circulation water pump and used for standby. The heat supply network heater is a horizontal U-shaped pipe heater. The heat supply network heater and the exhausted steam cooler both adopt the high-back-pressure steam turbine for steam pumping and heating. The heating capacity is achieved through combination of the steam turbine high-back-pressure exhausted steam waste heat recycling technology and a conventional heat supply network, the energy utilization efficiency is greatly improved, and the initial heat supply network station meets the national policy about energy conservation and emission reduction and has a significant demonstration effect.
Description
Technical field
The invention belongs to heat supply network heating field, relate to a kind of coal-burning power plant UTILIZATION OF VESIDUAL HEAT IN Gateway Station in Heating Network.
Background technology
Along with developing rapidly of urban economy construction and improving constantly of living standards of the people, the demand sending out warm heat load winter is also increasing rapidly, and the demand of the annual central heating in city is more than actual heat capacity, and central heating demand is the most urgent.The cold end loss in thermal power plant is the ceiling capacity loss of power plant thermal system, and substantial amounts of turbine condenser waste heat is emitted in air by different cooling devices.Under power plant's operating condition in the winter time, the loss of turbine discharge condensation heat can account for 50～60%(steam power plants of fuel gross calorific power also more than 30%), the loss of exhaust steam in steam turbine condensation heat is waste heat discharge for thermal power plant, but for the building and heating needing low grade heat energy, then constitute huge energy waste and traditional coal-burning power plant, it is thus desirable to existing heating system is transformed, steam turbine high back pressure exhaust steam residual heat recovery technology is utilized to be implemented in combination with the heat capacity of 768MW with conventional Gateway Station in Heating Network.
Summary of the invention
In order to solve above-mentioned technical deficiency, the invention discloses a kind of coal-burning power plant UTILIZATION OF VESIDUAL HEAT IN Gateway Station in Heating Network.
nullThe technical solution adopted in the present invention is: a kind of coal-burning power plant UTILIZATION OF VESIDUAL HEAT IN Gateway Station in Heating Network，Including condenser and heat supply network station，Described condenser uses high back pressure exhaust steam in steam turbine heat cycles water，Described heat supply network station owner will be by circulation pump of heat-supply network、Vent gas cooler and heat exchangers for district heating composition，Described steam discharge cooler、Heat exchangers for district heating and condenser series operation，Described circulation pump of heat-supply network has the water circulating pump that three is back pressure steam turbine drive to use as running、One is that motorized motions water circulating pump is as standby，The water circulating pump of back pressure steam turbine drive uses governor impeller simultaneously，Change regulation heat supply network quantity of circulating water according to thermic load，Control heating load，Described heat exchangers for district heating totally four，Paired running，Carry identical thermic load，And heat exchangers for district heating is Horizontal U-shaped tube heater，Described heat exchangers for district heating、Use the heating of high back pressure extracted steam from turbine，Drawing gas as the steam after circulation pump of heat-supply network uses of described steam discharge cooler，At Heating Season，The heat supply network recirculated water backwater of full factory first passes through the heat supply condenser of two series connection，It is heated to certain temperature with exhaust steam in steam turbine，Pass sequentially through steam discharge cooler the most again、Heat exchangers for district heating，Draw gas with unit and do two grades of heating.
Preferably, described a kind of coal-burning power plant UTILIZATION OF VESIDUAL HEAT IN Gateway Station in Heating Network, also include hydrophobic development unit, heat supply network drain tank, heat supply network draining pump and steam discharge cooler drainage pump, the side of described hydrophobic development unit is connected with coagulation hydroenergy backwater mother's pipe, opposite side is connected with heat supply network drain tank, described heat supply network drain tank is connected to heat supply network recirculated water water return pipeline through heat supply network draining pump, it is provided with oxygen-eliminating device in heat supply network recirculated water water return pipeline porch, described heat supply network draining pump totally two, one operation, another is standby, described steam discharge cooler drainage pump is connected with vent gas cooler by condensation return pipt, by heat supply network station draw gas heating after condensation water, a part returns to heat supply network circulation after heat supply network draining pump, another part is through steam discharge cooler drainage pump, steam turbine main building is returned to after heat supply network drainage pump, in the case of accident or high water level, hydrophobic entrance is dredged
Preferably, described a kind of coal-burning power plant UTILIZATION OF VESIDUAL HEAT IN Gateway Station in Heating Network, it is provided with dirt separator in heat supply network recirculated water water return pipeline condenser porch, heat supply network recirculated water main pipeline is provided with water charging system, the supplementary water come by chemical deionization water tank, circulates in heat supply network small pump enters the heat supply network water return pipeline of pumps for hot water supply net entrance.
Accompanying drawing explanation
Fig. 1 is that the structure of Gateway Station in Heating Network of the present invention is always intended to.
Fig. 2 is the condenser partial structurtes schematic diagram of Gateway Station in Heating Network.
Fig. 3 is the steam discharge cooler partial structurtes schematic diagram of Gateway Station in Heating Network.
Fig. 4 is the heat exchangers for district heating partial structurtes schematic diagram of Gateway Station in Heating Network.
Fig. 5 is the water circulating pump partial structurtes schematic diagram of Gateway Station in Heating Network.
Fig. 6 is the draining system partial structurtes schematic diagram of Gateway Station in Heating Network.
Fig. 7 is the drainage system partial structurtes schematic diagram of Gateway Station in Heating Network.
In figure: 1. condenser, 2. heat exchangers for district heating, 3. steam-operating water circulating pump, 4. electric water circulating pump, 5. hydrophobic development unit, 6. heat supply network drain tank, 7. heat supply network draining pump, 8. steam discharge cooler, 9. heat supply network drainage pump, 10. electric water circulating pump fluid coupling cooler, 11. water circulating pump steam turbines, 12. dirt separators.
Detailed description of the invention
In order to be more fully understood that the present invention, below in conjunction with specific embodiment, the present invention is explained in detail.It is clear that the present invention can be carried out different modification and remodeling and without departing from the broader spirit and scope of the present invention of appended claims.Therefore, following example have exemplary and do not have conditional implication.
nullA kind of coal-burning power plant as depicted UTILIZATION OF VESIDUAL HEAT IN Gateway Station in Heating Network，Including condenser (1) and heat supply network station，Described condenser (1) uses high back pressure exhaust steam in steam turbine heat cycles water，Described heat supply network station owner will be by circulation pump of heat-supply network、Vent gas cooler (8) and heat exchangers for district heating (2) composition，Described steam discharge cooler (8)、Heat exchangers for district heating (2) and condenser (1) series operation，Described circulation pump of heat-supply network has the water circulating pump (3) that three is back pressure steam turbine drive to use as running、One is that motorized motions water circulating pump (4) is as standby，The water circulating pump (3) of back pressure steam turbine drive uses governor impeller simultaneously，Change regulation heat supply network quantity of circulating water according to thermic load，Control heating load，Described heat exchangers for district heating (2) totally four，Paired running，Carry identical thermic load，And heat exchangers for district heating (2) is Horizontal U-shaped tube heater，Described heat exchangers for district heating (2)、Use the heating of high back pressure extracted steam from turbine，Drawing gas as the steam after circulation pump of heat-supply network (4) uses of described steam discharge cooler (8)，At Heating Season，The heat supply network recirculated water backwater of full factory first passes through the heat supply condenser (1) of two series connection，It is heated to certain temperature with exhaust steam in steam turbine，Pass sequentially through steam discharge cooler (8) the most again、Heat exchangers for district heating (2)，Draw gas with unit and do two grades of heating.nullDescribed Gateway Station in Heating Network also includes hydrophobic development unit (5)、Heat supply network drain tank (6)、Heat supply network draining pump (7) and steam discharge cooler drainage pump，The side of described hydrophobic development unit (5) is connected with coagulation hydroenergy backwater mother's pipe，Opposite side is connected with heat supply network drain tank (6)，Described heat supply network drain tank (6) is connected to heat supply network recirculated water water return pipeline through heat supply network draining pump (7)，It is provided with oxygen-eliminating device in heat supply network recirculated water water return pipeline porch，Described heat supply network draining pump (7) totally two，One operation，Another is standby，Described steam discharge cooler drainage pump is connected with vent gas cooler (8) by condensation return pipt，By heat supply network station draw gas heating after condensation water，A part returns to heat supply network circulation after heat supply network draining pump (7)，Another part is through steam discharge cooler drainage pump、Steam turbine main building is returned to after heat supply network drainage pump，In the case of accident or high water level，After the dilatation of hydrophobic entrance hydrophobic development unit (5)，In heat supply network draining pump (7) enters the heat supply network water return pipeline of pumps for hot water supply net entrance.Be provided with dirt separator (12) in heat supply network recirculated water water return pipeline condenser porch, heat supply network recirculated water main pipeline is provided with water charging system, chemical deionization water tank the supplementary water come, circulates in heat supply network small pump enters the heat supply network water return pipeline of pumps for hot water supply net entrance.
The invention has the beneficial effects as follows:
1. this heat supply transformation uses high back pressure to be that heat energy changes the state-of-the-art means of cascade utilization, efficiency of energy utilization can be greatly improved, meet the national policy of energy-saving and emission-reduction and have great exemplary role；
2. the heat supply phase utilize Air-cooled Unit can with high back pressure run technical characterstic, realize direct heating, steam discharge directly heats heat supply network recirculated water, achieve steam heat big portion and all of, infantile feverish perspiration vapour used heat is heat supply heat, and the cold source energy of steam turbine is greatly decreased；
3. using high back pressure heat supply, part extraction for heat supply changes exhaust steam heat supply into, creates a part of electricity；And owing to low pressure (LP) cylinder flow increases, low pressure (LP) cylinder efficiency increases more, generated energy increases, and compared with heat pump, high back pressure formula investing is little, and income is good.
The above is only the better embodiment of the present invention, therefore all equivalence changes done according to structure, feature and the principle described in present patent application scope or modification, in the range of being all included in present patent application.
Claims (3)
- null1. coal-burning power plant's UTILIZATION OF VESIDUAL HEAT IN Gateway Station in Heating Network，Including condenser (1) and heat supply network station，It is characterized in that: described condenser (1) uses high back pressure exhaust steam in steam turbine heat cycles water，Described heat supply network station owner will be by circulation pump of heat-supply network、Vent gas cooler (8) and heat exchangers for district heating (2) composition，Described steam discharge cooler (8)、Heat exchangers for district heating (2) and condenser (1) series operation，Described circulation pump of heat-supply network has the water circulating pump (3) that three is back pressure steam turbine drive to use as running、One is that motorized motions water circulating pump (4) is as standby，Circulation pump of heat-supply network Turbine Steam source is from heat supply network steam extraction head，The water circulating pump (3) of back pressure steam turbine drive uses governor impeller simultaneously，Change regulation heat supply network quantity of circulating water according to thermic load，Control heating load，Described heat exchangers for district heating (2) totally four，Paired running，Carry identical thermic load，And heat exchangers for district heating (2) is Horizontal U-shaped tube heater，Described heat exchangers for district heating (2) uses the heating of high back pressure extracted steam from turbine，The heater vapour source of described steam discharge cooler (8) is from circulation pump of heat-supply network (4) little steam turbine steam discharge，At Heating Season，The heat supply network recirculated water backwater of full factory first passes through the heat supply condenser (1) of two series connection，It is heated to certain temperature with exhaust steam in steam turbine，Pass sequentially through steam discharge cooler (8) the most again、Heat exchangers for district heating (2)，Draw gas with unit and do two grades of heating.
- nullA kind of coal-burning power plant the most according to claim 1 UTILIZATION OF VESIDUAL HEAT IN Gateway Station in Heating Network，It is characterized in that: also include hydrophobic development unit (5)、Heat supply network drain tank (6)、Heat supply network draining pump (7) and steam discharge cooler drainage pump，The side of described hydrophobic development unit (5) is connected with coagulation hydroenergy backwater mother's pipe，Opposite side is connected with heat supply network drain tank (6)，Described heat supply network drain tank (6) is connected to heat supply network recirculated water water return pipeline through heat supply network draining pump (7)，It is provided with oxygen-eliminating device in heat supply network recirculated water water return pipeline porch，Described heat supply network draining pump (7) totally two，One operation，Another is standby，Described steam discharge cooler drainage pump is connected with vent gas cooler (8) by condensation return pipt，By heat supply network station draw gas heating after condensation water，A part returns to heat supply network circulation after heat supply network draining pump (7)，Another part is through steam discharge cooler drainage pump、Steam turbine main building is returned to after heat supply network drainage pump，In the case of accident or high water level，After the dilatation of hydrophobic entrance hydrophobic development unit (5)，In heat supply network draining pump (7) enters the heat supply network water return pipeline of pumps for hot water supply net entrance.
- A kind of coal-burning power plant the most according to claim 1 UTILIZATION OF VESIDUAL HEAT IN Gateway Station in Heating Network, it is characterized in that: heat supply network recirculated water water return pipeline condenser porch is provided with dirt separator (12), heat supply network recirculated water main pipeline is provided with water charging system, the supplementary water come by chemical deionization water tank, circulates in heat supply network small pump enters the heat supply network water return pipeline of pumps for hot water supply net entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610469324.9A CN105953286A (en) | 2016-06-25 | 2016-06-25 | Initial heat supply network station for waste heat utilization of coal-fired power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610469324.9A CN105953286A (en) | 2016-06-25 | 2016-06-25 | Initial heat supply network station for waste heat utilization of coal-fired power plant |
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| CN105953286A true CN105953286A (en) | 2016-09-21 |
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| CN201610469324.9A Pending CN105953286A (en) | 2016-06-25 | 2016-06-25 | Initial heat supply network station for waste heat utilization of coal-fired power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500637A (en) * | 2019-06-27 | 2019-11-26 | 华电郑州机械设计研究院有限公司 | A kind of Gateway Station in Heating Network system using thermal power plant condenser steam exhaust |
| CN111271699A (en) * | 2020-03-21 | 2020-06-12 | 中国能源建设集团山西省电力勘测设计院有限公司 | Heat supply network drainage system of cut cylinder lower circulating fluidized bed cogeneration unit and control method |
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2016
- 2016-06-25 CN CN201610469324.9A patent/CN105953286A/en active Pending
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500637A (en) * | 2019-06-27 | 2019-11-26 | 华电郑州机械设计研究院有限公司 | A kind of Gateway Station in Heating Network system using thermal power plant condenser steam exhaust |
| CN110500637B (en) * | 2019-06-27 | 2024-05-28 | 华电郑州机械设计研究院有限公司 | Heat supply network head station system utilizing exhaust steam of condenser of thermal power plant |
| CN111271699A (en) * | 2020-03-21 | 2020-06-12 | 中国能源建设集团山西省电力勘测设计院有限公司 | Heat supply network drainage system of cut cylinder lower circulating fluidized bed cogeneration unit and control method |
| CN111271699B (en) * | 2020-03-21 | 2024-05-07 | 中国能源建设集团山西省电力勘测设计院有限公司 | Heat supply network drainage system of cylinder-cut lower circulating fluidized bed cogeneration unit and control method |
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