CN114440204A - Process route for transforming standby coal-electric machine set and formed new system - Google Patents
Process route for transforming standby coal-electric machine set and formed new system Download PDFInfo
- Publication number
- CN114440204A CN114440204A CN202210116683.1A CN202210116683A CN114440204A CN 114440204 A CN114440204 A CN 114440204A CN 202210116683 A CN202210116683 A CN 202210116683A CN 114440204 A CN114440204 A CN 114440204A
- Authority
- CN
- China
- Prior art keywords
- coal
- molten salt
- electric
- steam
- energy storage
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
-
- 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
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/10—Combinations of wind motors with apparatus storing energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
-
- 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
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Water Supply & Treatment (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
A process route for transforming a standby coal-electricity unit and a formed new system are characterized in that: the new system formed by transforming the coal electric unit plays a normal starting function of the coal electric unit during the emergency starting period of the coal electric unit; the formed new system plays a green energy storage function during the long-term shutdown period of the coal-electric machine set; the adopted process route is that an electric energy storage system (8) is parallel to a coal-fired boiler system (1) of a coal-electric machine set, and an original steam power generation system (2) and a power transmission and transformation system (3) of the coal-electric machine set are used for waste. The invention plays the function of a green energy storage power station in the normal long-term shutdown period of the coal-electric set, can absorb wind power and photovoltaic power, becomes a green power 'reservoir', and avoids the reduction loss of equipment performance, the depreciation and the value reduction of huge assets and the reduction of employment posts of the coal-electric industry caused by the long-term idle of a large amount of coal-electric capital due to the long-term shutdown of the coal-electric set. The method is mainly applied to the transformation of the coal-electric machine set which is stopped for a long time and started for emergency.
Description
Technical Field
The invention belongs to the technical field of reconstruction of coal-electricity units, and particularly relates to a process route for reconstructing a standby coal-electricity unit and a formed new system.
Background
The electric power industry is one of the major industries in coal consumption. The normal long-term shutdown and emergency start of the medium-sized coal-fired unit are effective ways for optimizing the power supply structure and improving the energy utilization efficiency. The unit which meets the requirements of policies and standards such as energy efficiency, environmental protection, safety and the like can be closed without dismantling under the conditions of no need of original site reconstruction, no need of remote construction such as 'moving out of city and going out of suburb' and the like, and can be used as an emergency standby power supply to play a role. Scientifically identifying and quitting the emergency standby unit, strictly managing the operation and dispatching of the emergency standby power supply, stopping the emergency standby unit in a normal state, starting the emergency standby unit in an emergency state, stopping the emergency standby unit after the emergency standby power supply operates at a peak, and contributing to reducing the overall energy consumption and emission while playing a role in protection and supply.
The medium-sized coal power generation unit is normally shut down for a long time and is emergently started, so that long-term idle of a large amount of coal power capital, huge waste and reduction of employment posts in the coal power industry are caused. The method has the advantages that the research on the technical transformation problem of the long-term shutdown and emergency standby coal-electricity unit is actively developed, and the method has great economic and social significance.
Disclosure of Invention
The invention aims to improve the coal-electricity units which are stopped for a long time and started for emergency, so as to avoid the performance reduction loss of equipment, huge depreciation and value reduction of assets and reduction of employment posts in the coal-electricity industry caused by long-term idling of a large amount of coal-electricity capital due to long-term shutdown of the coal-electricity units.
Therefore, the idea of considering a suitable transformation technical scheme is that the emergency starting function of the coal electric unit is related to the safety of electric power, so that the function of not influencing the emergency starting of the coal electric unit is firstly considered when the transformation technology is selected, and the coal electric unit can play a role during the long-term shutdown period, so that the value is created.
The policies of normal long-term stopping and emergency starting of part of coal-electricity units are analyzed because the coal-electricity unit coal-fired boiler systems are not high in efficiency and meet the actual requirements of double-carbon target carbon emission reduction, the normal long-term stopping and emergency starting coal-electricity units are substantially equal to the coal-fired boiler systems of the long-term stopping and emergency starting coal-electricity units, the coal-fired boiler systems are used for generating high-temperature and high-pressure water vapor at the temperature of more than 540 ℃, and the high-temperature and high-pressure water vapor is used for generating electricity for the steam turbine.
If an electric energy storage system similar to a coal-fired boiler system of a coal-electric machine set in function is designed, green electricity or valley electricity such as wind electricity and photovoltaic electricity is adopted as an energy source for the electric energy storage system, the electric energy storage system can replace the coal-fired boiler system in function, and water vapor with high temperature and high pressure of 540 ℃ can be generated; the electric energy storage system is parallel to the coal-fired boiler system, so that the electric energy storage system is started to replace the coal-fired boiler system during the long-term shutdown of the coal-fired power units, the original steam power generation system and the power transmission and transformation system of the old coal-fired power units are utilized, and the new system can realize the function of a green energy storage power station.
The invention provides a technical scheme for transforming a process route of a spare coal-electric machine set and a formed new system, the technical scheme can transform the coal-electric machine set which is stopped for a long time and started for emergency into a coal machine spare and green energy storage integrated power station, the integrated power station can normally play emergency starting action during the emergency starting period of a coal machine, and plays a role of the green energy storage power station during the stopping period of the coal machine in a normal state.
The technical scheme of the invention is as follows:
a new system that transformation spare coal electric unit's technology route and formation, its characterized in that: 1. a new system formed by a coal-electricity unit is improved; the formed new system plays a green energy storage function during the long-term shutdown period of the coal-electric machine set; the formed new system plays a normal starting function of the coal electric unit during the emergency starting period of the coal electric unit; the method is mainly applied to the transformation of the coal-electric unit which is normally out of service for a long time and is started in emergency;
the adopted process route is that an electric energy storage system (8) is parallel to a coal-fired boiler system (1) of a coal-electric machine set, and an original steam power generation system (2) and a power transmission and transformation system (3) of the coal-electric machine set are used for waste.
Further, a transformation reserve coal electric unit's process route and new system that forms, its characterized in that: the new system formed comprises at least one coal-fired boiler system (1), at least one electric energy storage system (8), at least one steam power generation system (2), at least one power transmission and transformation system (3);
the electric energy storage system (8) is connected with the steam power generation system (1) through a main steam pipeline (6) and/or a water return pipeline (7) respectively; the main steam pipeline (6) is connected with the water return pipeline (7) in parallel; the steam power generation system (1) is connected with the power transmission and transformation system (3) through a cable (5); the power transmission and transformation system (3) is connected with the electric energy storage system (8) through a cable (5);
the coal-fired boiler system (1) is respectively connected with the steam power generation system (1) through a main steam pipeline (6) and/or a water return pipeline (7);
the coal-fired boiler system (1) is parallel to the electric energy storage system (8).
In the technical scheme, when the coal electric unit is in a long-term shutdown period, the coal-fired boiler system (1) is closed, the electric energy storage system (8) is started, and the formed new system plays a role of a green energy storage power station.
In the technical scheme, the process route for transforming the standby coal-electric machine set and the formed new system have the advantages that when the coal-electric machine set is in the emergency starting period, the coal-fired boiler system (1) is in the starting state, the electric energy storage system (8) is closed, and the formed new system normally plays the emergency starting function of the coal-electric machine set.
In the technical scheme, the parameters of the high-temperature and high-pressure steam generated by the electric energy storage system (8) are consistent with or close to those of the coal-fired boiler system (1);
in the technical scheme, the parameters of the steam in the main steam pipeline (6) are consistent with or close to those of the coal-fired boiler system (1), and the high-temperature and high-pressure steam flows to the steam power generation system (2) from the electric energy storage system (8) to push the steam generator to generate power;
in the technical scheme, the water return pipeline (7) can be a plurality of water return pipelines, steam or condensed water can flow in the water return pipelines, and the flow direction of the water return pipelines flows from the steam power generation system (2) to the electric energy storage system (8) to form a loop of a process water working medium circulating between the electric energy storage system (8) and the steam power generation system (2);
in the technical scheme, the power transmission and transformation system (3) is connected with an external power grid (4) through a cable (5); the energy of the electric energy storage system (8) is from an external power grid (4) or a coal-electric machine set, and can be green electricity or valley electricity such as wind electricity, photovoltaic electricity and the like;
in the technical scheme, the electric energy storage system (8) preferably adopts an electric heating molten salt energy storage system, and the system comprises a molten salt electric heater, a high-temperature molten salt storage tank, a molten salt steam superheater, a molten salt steam generator, a molten salt water preheater and a low-temperature molten salt storage tank; the molten salt electric heater is sequentially connected with the high-temperature molten salt storage tank, the molten salt steam superheater, the molten salt steam generator and the molten salt water preheater through a molten salt pipeline; the molten salt water preheater is connected with the low-temperature molten salt storage tank through a molten salt pipeline; the low-temperature molten salt storage tank is connected with the molten salt electric heater through a molten salt pipeline; providing power for the flow of the molten salt through a molten salt pump; the fused salt preferably adopts low-melting-point quaternary fused salt, and the fused salt has the parameters of 94 ℃ of melting point, 628 ℃ of decomposition temperature and 199kwh/t of heat storage density; the energy for heating the molten salt preferably adopts green electricity or valley electricity such as wind power, photovoltaic electricity and the like;
when the coal-electric machine set needs to be started in an emergency mode in the power grid, the electric energy storage system (8) is closed, the coal-fired boiler system (1) is in a normal starting state at the moment, and a formed new system plays a normal emergency starting function of the coal-electric machine set;
when the coal-fired boiler system (1) is in a closed and deactivated state at the time when the coal-fired boiler unit needs to be deactivated for a long time by the power grid, the electric energy storage system (8) is started, and the formed new system plays a role of a green energy storage power station;
green electricity or valley electricity such as wind electricity, photovoltaic electricity and the like is adopted to heat the molten salt with the temperature of 200 ℃ in the low-temperature molten salt storage tank to 560 ℃ through the molten salt electric heater, the molten salt with the temperature of 560 ℃ is pumped into the high-temperature molten salt storage tank through the molten salt pump to be stored, when the electric energy storage system (8) is started, the 560 ℃ molten salt is pumped by the molten salt pump to flow through the molten salt steam superheater, the molten salt steam generator and the molten salt water preheater in sequence, the high-temperature molten salt exchanges heat with water at the molten salt steam generator, the high-temperature molten salt is changed into 200 ℃ low-temperature molten salt at the molten salt outlet of the molten salt water preheater, pumping low-temperature molten salt into a low-temperature molten salt storage tank by a molten salt pump for storage, converting water into high-temperature high-pressure steam at 540 ℃ by heat exchange, the high-temperature and high-pressure steam drives a steam turbine generator in the steam power generation system (2) to generate power, and the generated power is supplied to a power grid through the power transmission and transformation system (3) and an external power grid (4).
Compared with the prior art, the invention has the following advantages and prominent technical effects:
the process route for transforming the standby coal-electricity unit and the formed new system normally play the emergency starting role of the coal-electricity unit when the coal-electricity unit is started in emergency; the function of a green energy storage power station is exerted in the normal long-term shutdown period of the coal-electricity unit, wind electricity and photovoltaic electricity can be consumed, the water storage tank becomes green electricity, and the performance reduction loss of equipment, huge depreciation and value reduction of assets and reduction of employment posts of the coal-electricity industry, which are formed by long-term idling of a large amount of coal-electricity capital due to long-term shutdown of the coal-electricity unit, are avoided.
Drawings
Fig. 1 is a schematic structural diagram before modification of a coal electric machine set.
FIG. 2 is a schematic diagram of a new system formed by a new process route for transforming a spare coal-electric machine set according to the invention.
In the figure: 1. a coal fired boiler system; 2. a steam power generation system; 3. a power transmission and transformation system; 4. an external power grid; 5. A cable; 6. a main steam line; 7. a water return pipeline; 8. an electrical energy storage system.
Detailed Description
The invention is further described with reference to the following figures and detailed description:
fig. 1 is a schematic structural diagram of a coal-electric machine set before modification, wherein the coal-electric machine set consists of a coal-fired boiler system (1), a steam power generation system (2) and a power transmission and transformation system (3); the coal-fired boiler system (1) is respectively connected with the steam power generation system (1) through a main steam pipeline (6) and/or a water return pipeline (7); the main steam pipeline (6) is connected with the water return pipeline (7) in parallel; the steam power generation system (1) is connected with the power transmission and transformation system (3) through a cable (5).
FIG. 2 is a schematic diagram of a process route for transforming a standby coal-electric power unit and a novel system formed by the process route, the process route for transforming the standby coal-electric power unit and the novel system formed by the process route comprise at least one coal-fired boiler system (1), at least one molten salt energy storage system (8), at least one steam power generation system (2) and at least one power transmission and transformation system (3);
the electric energy storage system (8) is connected with the steam power generation system (1) through a main steam pipeline (6) and/or a water return pipeline (7) respectively; the main steam pipeline (6) is connected with the water return pipeline (7) in parallel; the steam power generation system (1) is connected with the power transmission and transformation system (3) through a cable (5); the power transmission and transformation system (3) is connected with the molten salt energy storage system (8) through a cable (5);
the coal-fired boiler system (1) is respectively connected with the steam power generation system (1) through a main steam pipeline (6) and/or a water return pipeline (7);
the coal-fired boiler system (1) is parallel to the electric energy storage system (8).
The following is specifically described by taking an example of transforming a 300MW long-term shutdown emergency-enabled coal-electric machine into a 300MW coal-machine standby and green energy-storage integrated power station:
the electric energy storage system (8) preferably adopts an electric heating molten salt energy storage system, and the system comprises a molten salt electric heater, a high-temperature molten salt storage tank, a molten salt steam superheater, a molten salt steam generator, a molten salt water preheater and a low-temperature molten salt storage tank; the molten salt electric heater is sequentially connected with the high-temperature molten salt storage tank, the molten salt steam superheater, the molten salt steam generator and the molten salt water preheater through a molten salt pipeline; the molten salt water preheater is connected with the low-temperature molten salt storage tank through a molten salt pipeline; the low-temperature molten salt storage tank is connected with the molten salt electric heater through a molten salt pipeline; providing power for the flow of the molten salt through a molten salt pump; the fused salt preferably adopts low-melting-point quaternary fused salt, and the fused salt has the parameters of 94 ℃ of melting point, 628 ℃ of decomposition temperature and 199kwh/t of heat storage density; the energy for heating the molten salt preferably adopts green electricity or valley electricity such as wind power, photovoltaic electricity and the like;
when the coal-electric machine set needs to be started in an emergency mode in the power grid, the electric energy storage system (8) is closed, the coal-fired boiler system (1) is in a normal starting state at the moment, and a formed new system plays a normal emergency starting function of the coal-electric machine set;
when the coal-fired boiler system (1) is in a closed and deactivated state at the time when the coal-fired boiler unit needs to be deactivated for a long time by the power grid, the electric energy storage system (8) is started, and the formed new system plays a role of a green energy storage power station;
the method comprises the steps of heating molten salt at 200 ℃ from a low-temperature molten salt storage tank to 560 ℃ by green electricity or valley electricity such as wind electricity, photovoltaic electricity and the like from an external power grid (4) through a molten salt electric heater through the power transmission and transformation system (3), pumping the molten salt at 560 ℃ into a high-temperature molten salt storage tank through a molten salt pump for storage, pumping the molten salt at 560 ℃ into a low-temperature molten salt storage tank through the molten salt pump when an electric energy storage system (8) is started, enabling the molten salt to sequentially flow through a molten salt steam superheater, a molten salt steam generator and a molten salt water preheater, enabling the high-temperature molten salt to exchange heat with water at the position, enabling the high-temperature molten salt to be changed into low-temperature molten salt at the molten salt water preheater molten salt outlet to be 200 ℃, pumping the low-temperature molten salt into the low-temperature molten salt storage tank through the molten salt pump for storage, enabling the water to be changed into high-temperature high-pressure steam at the position through the heat exchange, and pushing a steam turbine generator in a steam power generation system (2) to generate power, the generated electricity is supplied to the power grid through the power transmission and transformation system (3) and the external power grid (4).
While one embodiment of the present invention has been described in detail, the description is only illustrative of the preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All simple modifications, equivalent changes and modifications made within the scope of the present invention shall be within the scope of the patent coverage of the present invention.
Claims (8)
1. A new system that transformation spare coal electric unit's technology route and formation, its characterized in that: reforming a coal-electricity unit to form a new system; the formed new system plays a green energy storage function during the long-term shutdown period of the coal-electric machine set; the formed new system plays a normal starting function of the coal electric unit during the emergency starting period of the coal electric unit; the method is mainly applied to the transformation of the coal-electric unit which is normally out of service for a long time and is started in emergency;
the adopted process route is that an electric energy storage system (8) is parallel to a coal-fired boiler system (1) of a coal-electric machine set, and an original steam power generation system (2) and a power transmission and transformation system (3) of the coal-electric machine set are used for waste.
2. A new system that transformation spare coal electric unit's technology route and formation, its characterized in that: the new system formed comprises at least one coal-fired boiler system (1), at least one electric energy storage system (8), at least one steam power generation system (2), at least one power transmission and transformation system (3);
the electric energy storage system (8) is connected with the steam power generation system (1) through a main steam pipeline (6) and/or a water return pipeline (7) respectively; the main steam pipeline (6) is connected with the water return pipeline (7) in parallel; the steam power generation system (1) is connected with the power transmission and transformation system (3) through a cable (5); the power transmission and transformation system (3) is connected with the electric energy storage system (8) through a cable (5);
the coal-fired boiler system (1) is respectively connected with the steam power generation system (1) through a main steam pipeline (6) and/or a water return pipeline (7);
the coal-fired boiler system (1) is parallel to the electric energy storage system (8).
3. A process route for revamping a spare coal-electric set and a new system formed according to claims 1 and/or 2, characterized in that: when the coal-fired power unit is in a long-term off-service period, the coal-fired boiler system (1) is in a closed state, the electric energy storage system (8) is started, and the formed new system plays a role of a green energy storage power station.
4. A process route for revamping a spare coal-electric set and a new system formed according to claims 1 and/or 2, characterized in that: when the coal-fired power unit is in the emergency starting period, the coal-fired boiler system (1) is in the opening state, the electric energy storage system (8) is closed, and the formed new system normally plays the emergency starting function of the coal-fired power unit.
5. The process route for transforming the spare coal-electric machine set and the formed new system are characterized in that: the parameters of the high-temperature and high-pressure steam generated by the electric energy storage system (8) are consistent with or close to those of the coal-fired boiler system (1);
the parameters of the steam in the main steam pipeline (6) are consistent with or close to those of the coal-fired boiler system (1), and the high-temperature and high-pressure steam flows to the steam power generation system (2) from the electric energy storage system (8) to push the steam turbine to generate power.
6. The process route for transforming the spare coal-electric machine set and the formed new system are characterized in that: the water return pipeline (7) can be a plurality of water return pipelines, steam or condensed water can flow in the water return pipeline, and the flow direction of the steam or condensed water flows from the steam power generation system (2) to the electric energy storage system (8) to form a loop of the process water working medium circulating between the electric energy storage system (8) and the steam power generation system (2).
7. The process route for transforming the spare coal-electric machine set and the formed new system are characterized in that: the power transmission and transformation system (3) is connected with an external power grid (4) through a cable (5); the energy of the electric energy storage system (8) is from an external power grid (4) or a coal-electric machine set, and the energy can be green electricity or valley electricity such as wind electricity, photovoltaic electricity and the like.
8. A process route for transforming a spare coal-electric machine set and a formed new system according to claim 1 and or 2, characterized in that: the electric energy storage system (8) preferably adopts an electric heating molten salt energy storage system, and the system comprises a molten salt electric heater, a high-temperature molten salt storage tank, a molten salt steam superheater, a molten salt steam generator, a molten salt water preheater and a low-temperature molten salt storage tank; the molten salt electric heater is sequentially connected with the high-temperature molten salt storage tank, the molten salt steam superheater, the molten salt steam generator and the molten salt water preheater through a molten salt pipeline; the molten salt water preheater is connected with the low-temperature molten salt storage tank through a molten salt pipeline; the low-temperature molten salt storage tank is connected with the molten salt electric heater through a molten salt pipeline; providing power for the flow of the molten salt through a molten salt pump; the fused salt preferably adopts low-melting-point quaternary fused salt, and the fused salt has the parameters of 94 ℃ of melting point, 628 ℃ of decomposition temperature and 199kwh/t of heat storage density; the energy for heating the molten salt preferably adopts green electricity or valley electricity such as wind power, photovoltaic electricity and the like;
when the coal-electric machine set needs to be started in an emergency mode in the power grid, the electric energy storage system (8) is closed, the coal-fired boiler system (1) is in a normal starting state at the moment, and a formed new system plays a normal emergency starting function of the coal-electric machine set;
when the coal-fired boiler system (1) is in a closed and deactivated state at the time when the coal-fired boiler unit needs to be deactivated for a long time by the power grid, the electric energy storage system (8) is started, and the formed new system plays a role of a green energy storage power station;
green electricity or valley electricity such as wind electricity, photovoltaic electricity and the like is adopted to heat the molten salt with the temperature of 200 ℃ in the low-temperature molten salt storage tank to 560 ℃ through the molten salt electric heater, and the molten salt with the temperature of 560 ℃ is pumped into the high-temperature molten salt storage tank through the molten salt pump to be stored; when the electric energy storage system (8) is started, 560 ℃ molten salt is pumped into and flows through the molten salt steam superheater in sequence through the molten salt pump, the molten salt steam generator and the molten salt water preheater, the high-temperature molten salt is subjected to heat exchange with water at the position, the high-temperature molten salt is changed into 200 ℃ low-temperature molten salt at the molten salt water preheater molten salt outlet, the low-temperature molten salt is pumped into the low-temperature molten salt storage tank through the molten salt pump to be stored, the water is changed into 540 ℃ high-temperature high-pressure steam at the position through the heat exchange, the high-temperature high-pressure steam drives the steam turbine generator in the steam power generation system (2) to generate power, and the generated power is supplied to the power grid through the power transmission and transformation system (3) and the external power grid (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210116683.1A CN114440204A (en) | 2022-02-07 | 2022-02-07 | Process route for transforming standby coal-electric machine set and formed new system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210116683.1A CN114440204A (en) | 2022-02-07 | 2022-02-07 | Process route for transforming standby coal-electric machine set and formed new system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114440204A true CN114440204A (en) | 2022-05-06 |
Family
ID=81370789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210116683.1A Pending CN114440204A (en) | 2022-02-07 | 2022-02-07 | Process route for transforming standby coal-electric machine set and formed new system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114440204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076671A (en) * | 2022-07-12 | 2022-09-20 | 北京工大环能科技有限公司 | Process route for carbon emission reduction of medium and small-sized combat readiness and civil heat source coal-fired unit and formed new system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2489574C1 (en) * | 2012-01-19 | 2013-08-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) | Steam and gas plant based on npp |
| CN111140296A (en) * | 2020-02-25 | 2020-05-12 | 中国电力工程顾问集团华东电力设计院有限公司 | Fused salt gradient energy storage and release peak regulation system and method for thermal power generating unit |
| CN111288428A (en) * | 2020-04-09 | 2020-06-16 | 东方电气集团东方锅炉股份有限公司 | Fused salt electrode boiler heat-storage power generation system |
| CN113503531A (en) * | 2021-08-02 | 2021-10-15 | 中国华能集团清洁能源技术研究院有限公司 | Multi-power-supply heat storage peak regulation power station for coal-fired power plant transformation and peak regulation method |
| CN113833541A (en) * | 2021-08-27 | 2021-12-24 | 北京工业大学 | Fast peak regulation system of auxiliary coal-fired unit for eliminating wind and light abandonment |
| CN113945107A (en) * | 2021-11-30 | 2022-01-18 | 北京工大环能科技有限公司 | High-pressure high-heat-flow molten salt energy storage, adjustment and utilization system |
-
2022
- 2022-02-07 CN CN202210116683.1A patent/CN114440204A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2489574C1 (en) * | 2012-01-19 | 2013-08-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) | Steam and gas plant based on npp |
| CN111140296A (en) * | 2020-02-25 | 2020-05-12 | 中国电力工程顾问集团华东电力设计院有限公司 | Fused salt gradient energy storage and release peak regulation system and method for thermal power generating unit |
| CN111288428A (en) * | 2020-04-09 | 2020-06-16 | 东方电气集团东方锅炉股份有限公司 | Fused salt electrode boiler heat-storage power generation system |
| CN113503531A (en) * | 2021-08-02 | 2021-10-15 | 中国华能集团清洁能源技术研究院有限公司 | Multi-power-supply heat storage peak regulation power station for coal-fired power plant transformation and peak regulation method |
| CN113833541A (en) * | 2021-08-27 | 2021-12-24 | 北京工业大学 | Fast peak regulation system of auxiliary coal-fired unit for eliminating wind and light abandonment |
| CN113945107A (en) * | 2021-11-30 | 2022-01-18 | 北京工大环能科技有限公司 | High-pressure high-heat-flow molten salt energy storage, adjustment and utilization system |
Non-Patent Citations (1)
| Title |
|---|
| 肖蕾; 王伟; 黄庆华: "高效节能的600MW等级燃煤发电汽轮机", 装备机械, no. 1, pages 19 - 25 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076671A (en) * | 2022-07-12 | 2022-09-20 | 北京工大环能科技有限公司 | Process route for carbon emission reduction of medium and small-sized combat readiness and civil heat source coal-fired unit and formed new system |
| CN115076671B (en) * | 2022-07-12 | 2024-04-26 | 北京工大环能科技有限公司 | Technological route and system for carbon emission reduction of medium and small combat readiness and civil heat source coal-fired unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111140296B (en) | Thermal power generating unit molten salt cascade storage and release energy peak regulation system and method | |
| CN212003284U (en) | Fused salt step storage energy peak regulation system of thermal power generating unit | |
| CN111852595A (en) | Efficient thermal power plant deep peak regulation system and method | |
| CN113756893A (en) | Multi-unit combined operation flexibility adjusting system among multiple power plants | |
| CN115807700A (en) | Nuclear-storage power generation system capable of realizing frequency modulation through low-pressure steam extraction and throttling and working method thereof | |
| CN114440204A (en) | Process route for transforming standby coal-electric machine set and formed new system | |
| CN215170237U (en) | Flexible peak shaving system of thermal power plant based on heat storage | |
| CN113864014A (en) | Black start-up system of fused salt energy storage of thermal power heat transfer | |
| CN113864015A (en) | Auxiliary thermal power black starting system of molten salt heat storage back press | |
| CN219494049U (en) | Fused salt heat accumulation power generation peak regulation system | |
| CN116379410A (en) | Coal-fired boiler start-up and peak regulation system and method based on valley electricity hydrogen production | |
| CN114543059A (en) | Process route for modifying shutdown coal-fired unit and formed new system | |
| CN115750263A (en) | Compressed air energy storage combined heat and power supply system and method utilizing salt cavern geothermal energy | |
| CN111139090A (en) | Ultralow-load operation method of dry quenching system | |
| CN217935102U (en) | Peak-regulating frequency-modulating system coupling electricity and heat storage | |
| CN217109504U (en) | Coal machine standby and green energy storage integrated power station | |
| CN213360198U (en) | Nuclear power surplus electricity system methyl alcohol device | |
| CN217270360U (en) | Environment-friendly energy storage power station formed by transforming coal electric machine set | |
| CN115076671B (en) | Technological route and system for carbon emission reduction of medium and small combat readiness and civil heat source coal-fired unit | |
| CN115405383A (en) | Heat storage-based flexible peak regulation system and method for thermal power plant | |
| CN113154500B (en) | Wind energy utilization method and device based on cogeneration coupling molten salt heat storage | |
| CN217976347U (en) | Capacity-increasing and peak-regulating device and capacity-increasing and peak-regulating system of thermal power generating unit | |
| CN115854321A (en) | Process route for carbon emission reduction of medium and small-sized civil heat source coal-fired units and formed new system | |
| CN217107146U (en) | Black start-up system of fused salt energy storage of thermal power heat transfer | |
| CN216306039U (en) | Multi-unit combined operation flexibility adjusting system among multiple power plants |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |