CN117005926A - High-temperature heat pump power generation system - Google Patents
High-temperature heat pump power generation system Download PDFInfo
- Publication number
- CN117005926A CN117005926A CN202311019218.7A CN202311019218A CN117005926A CN 117005926 A CN117005926 A CN 117005926A CN 202311019218 A CN202311019218 A CN 202311019218A CN 117005926 A CN117005926 A CN 117005926A
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- China
- Prior art keywords
- heat pump
- water
- temperature
- boiler
- source heat
- 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.)
- Pending
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 99
- 239000000498 cooling water Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 22
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 239000002918 waste heat Substances 0.000 description 6
- 239000003570 air Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/005—Using steam or condensate extracted or exhausted from steam engine plant by means of a heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/44—Use of steam for feed-water heating and another purpose
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a high-temperature heat pump power generation system, which comprises a boiler, a steam turbine generator, a condenser and a high-temperature water source heat pump set; the discharge of the boiler steam is communicated with a steam turbine generator; the exhaust hole of the steam turbine generator is communicated with the high-temperature water source heat pump set; the water inlet and the water outlet of the cooling water circulating pipe of the condenser and the condensed water outlet are communicated with the high-temperature water source heat pump; the high temperature water source heat pump outlet is communicated with the boiler. The heat pump is driven by steam at the tail end of the steam turbine generator, then enters the condenser to be condensed into water, enters the high-temperature heat pump, is used for heating the condensed water, enters the deaerator and then enters the power generation boiler, circulates in a large temperature difference way, and reduces pollutant emission and water resource consumption of the cooling system. The circulating water can reduce the circulating water flow rate by increasing the temperature difference, and the power consumption of the circulating water pump is reduced.
Description
Technical Field
The invention relates to the technical field of turbo generator sets, in particular to a high-temperature heat pump power generation system.
Background
The coal power generation belongs to Rankine cycle thermal power generation, and heat generated by other combustion and the like heats boiler water supply to generate steam, and the steam drives a steam turbine to rotate at a high speed so as to drive a generator to generate power. The thermal power generation circulation process can generate huge waste heat, namely vacuum low-pressure low-temperature waste steam after steam power generation, the waste steam is discharged into the atmosphere through cooling equipment such as a circulating water cooling tower, the waste heat discharged into the atmosphere accounts for more than 50% of the generated heat, the problem of thermal power generation is ubiquitous, and the key problem that the utilization rate of the generated heat is low and needs to be preferentially solved is solved.
After the high-temperature and high-pressure steam generated by power generation is generated by a steam turbine-generator, the low-temperature and high-pressure steam generated by the power generation adopts a high-temperature heat pump power generation system with the temperature of the exhaust steam of a wet condensing system being 40-60 ℃ and the pressure of a condenser being 5-12kP, and the power generation can be continuously circulated only by condensing the exhaust steam into water by the condenser (also called a water re-condenser). For example, for coal power, a high-temperature heat pump power generation system with 1kP pressure can reduce the generated energy by 0.5 percent or increase the coal consumption by 1-2.5 g/kwh, and the condensing system based on ambient air cooling is used for cooling circulating water, the condensing pressure of the circulating water is 1 time higher than that of the condensing pressure of the direct air cooling in summer and 1 time higher than that of the condensing pressure of the direct air cooling in winter. 2. The wet condensing water needs to consume 50-120 tons of circulating water per 1 ton of dead steam, and the condensing water is huge and the power consumption of a circulating pump is high. 3. The water quantity lost by evaporation, drift and pollution discharge of a circulating water cooling tower of a wet cooling unit accounts for 80% of the water supplementing quantity of an enterprise, and soluble particles contained in the circulating water reach 1000-3000 mg/L, and enter the atmosphere along with white smoke of the circulating water cooling tower, so that PM2.5 secondary particles are formed in the atmosphere, and the circulating water cooling tower is a source with the largest haze, and is also the field of the existing ultra-low emission standard, specification and online detection regardless of control. 4. The evaporation and condensation latent heat of the water vapor is 2258kJ/kg in a standard state, and is higher in a working state, and the condensation heat of the dead steam is completely discharged into the atmosphere no matter circulating water cooling or air cooling, so that the energy waste is realized, and the waste heat is one of main sources of greenhouse gases. In the existing steam-water system circulation of the turbine generator, the process of heating and pressurizing condensed water by extracting steam in the turbine has a lot of defects, and the steam used for generating electricity by the turbine is extracted to influence the generating efficiency. Therefore, a high-temperature heat pump auxiliary power generation system is a problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the technical problem of effectively recovering waste heat, and replaces the original condensate pump, condenser cooling tower and other low-temperature steam cooling devices by the heat pump assembly, thereby realizing the energy-saving effect.
In order to solve the technical problems, the technical scheme provided by the invention is that: comprises a boiler, a turbo generator, a condenser and a high-temperature water source heat pump set;
the discharge of the boiler steam is communicated with a steam turbine generator;
the exhaust hole of the steam turbine generator is communicated with the high-temperature water source heat pump set;
the water inlet and the water outlet of the cooling water circulating pipe of the condenser and the condensed water outlet are communicated with a high-temperature water source heat pump;
and the high-temperature water source heat pump high-temperature water outlet is communicated with the boiler.
As an improvement, a deaerator for connecting the boiler and the high-temperature water source heat pump is arranged between the boiler and the high-temperature water source heat pump, and the deaerator is communicated with the boiler.
As an improvement, the high-temperature water source heat pump group consists of a high-temperature water source heat pump.
Compared with the prior art, the invention has the advantages that: the heat pump is driven by steam at the tail end of the steam turbine generator, then enters the condenser to be condensed into water, enters the high-temperature heat pump, is used for heating the condensed water, enters the deaerator and then enters the power generation boiler, circulates in a large temperature difference way, and reduces pollutant emission and water resource consumption of the cooling system. The circulating water can reduce the circulating water flow rate by increasing the temperature difference, and the power consumption of the circulating water pump is reduced.
Drawings
Fig. 1 is a schematic diagram of a power generation system of a high-temperature heat pump according to the present invention.
As shown in the figure: 1. 2 parts of a boiler, 2 parts of a turbine generator, 3 parts of a condenser, 4 parts of a high-temperature water source heat pump set, 5 parts of a deaerator.
Detailed Description
The following describes a power generation system of a high-temperature heat pump in detail with reference to the accompanying drawings.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the product of the present invention is conventionally put when used, it is merely for convenience of describing the present invention and simplifying the description, and it does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang" and the like, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "plurality" means at least 2.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to the attached drawings, the high-temperature heat pump power generation system comprises a boiler 1, a steam turbine generator 2, a condenser 3 and a high-temperature water source heat pump set 4;
the steam of the boiler 1 is discharged and communicated with the steam turbine generator 2;
the exhaust hole of the steam turbine generator 2 is communicated with the high-temperature water source heat pump set 4;
the water inlet and the water outlet of the cooling water circulating pipe of the condenser 3 and the condensed water outlet are communicated with a high-temperature water source heat pump;
the high-temperature water source heat pump high-temperature water outlet is communicated with the boiler 1.
A deaerator 5 for connecting the boiler 1 and the high-temperature water source heat pump is arranged between the boiler 1 and the high-temperature water source heat pump, and the deaerator 5 is communicated with the boiler 1.
The high-temperature water source heat pump set 4 is composed of a high-temperature water source heat pump set 4.
The specific implementation process of the high-temperature heat pump power generation system is as follows:
the waste heat of the exhaust steam is recovered through a steam-driven high-temperature water source heat pump set 4 system at the tail end of the steam turbine generator 2, the waste heat is condensed into water by a condenser after doing work and enters a high-temperature heat pump, the high-temperature heat pump water system heat pump is mainly used for heating power generation circulating water, the water inlet end of a condensed water outlet end and the water outlet end of the circulating pipe are respectively used for inputting water sources of 30 ℃, 45 ℃ and 38 ℃ into the high-temperature water source heat pump set 4, the water sources are heated to 95 ℃ in the high-temperature water source heat pump set 4 and return to the power generation boiler 1, large-temperature-difference circulation is formed, the condensed water circulating water enters the heat pump in a form of 30 ℃, and the condensed water is heated to 95 ℃ and enters the boiler 1 for recycling. When the cooling system is in actual use, the cooling system is adjusted according to the actual operation condition of the power generation and heat supply system, the cooling tower can be completely or partially replaced, the pollutant emission and water resource consumption of the cooling system are reduced, circulating water can reduce circulating water flow by increasing temperature difference, the power consumption of the circulating water pump is reduced, and besides benefits, the cooling system has multiple benefits of obviously reducing pollution and haze, saving water, reducing carbon and the like.
The condenser 3 adopts circulating water cooling, the circulating water volume of the small power plant is 8200t/h, the water inlet and outlet temperature is 30-36 ℃, and the heat of the cooling water is recovered by embedding a high-temperature water source heat pump into a condensing circulating water system and is used for heating the condensed water to 90 ℃ and entering the deaerator 5 to enter the power generation boiler 1 for recycling. The energy source 274.63 kilo GJ can be saved each year, the carbon emission is reduced by 27.28 kilo tons, the water is saved by 98 kilo tons/a each year, and the emission of main pollutants is deeply reduced.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (3)
1. A high temperature heat pump power generation system, characterized in that: comprises a boiler (1), a turbo generator (2), a condenser (3) and a high-temperature water source heat pump set (4);
the steam of the boiler (1) is discharged and communicated with the steam turbine generator (2);
the exhaust hole of the steam turbine generator (2) is communicated with the high-temperature water source heat pump set (4);
the water inlet and the water outlet of the cooling water circulating pipe of the condenser (3) are communicated with the high-temperature water source heat pump;
the high-temperature water source heat pump high-temperature water outlet is communicated with the boiler (1).
2. A high temperature heat pump power generation system according to claim 1, wherein a deaerator (5) is arranged between the boiler (1) and the high temperature water source heat pump and is connected with the boiler (1), and the deaerator (5) is communicated with the boiler (1).
3. A high temperature heat pump power generation system according to claim 1, the high temperature water source heat pump group (4) being formed by a high temperature water source heat pump group (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311019218.7A CN117005926A (en) | 2023-08-14 | 2023-08-14 | High-temperature heat pump power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311019218.7A CN117005926A (en) | 2023-08-14 | 2023-08-14 | High-temperature heat pump power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117005926A true CN117005926A (en) | 2023-11-07 |
Family
ID=88565333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311019218.7A Pending CN117005926A (en) | 2023-08-14 | 2023-08-14 | High-temperature heat pump power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117005926A (en) |
-
2023
- 2023-08-14 CN CN202311019218.7A patent/CN117005926A/en active Pending
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