CN214464464U - Compressed air energy storage and power station boiler coupling operation system - Google Patents
Compressed air energy storage and power station boiler coupling operation system Download PDFInfo
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- CN214464464U CN214464464U CN202120467662.5U CN202120467662U CN214464464U CN 214464464 U CN214464464 U CN 214464464U CN 202120467662 U CN202120467662 U CN 202120467662U CN 214464464 U CN214464464 U CN 214464464U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 40
- 230000008878 coupling Effects 0.000 title claims abstract description 15
- 238000010168 coupling process Methods 0.000 title claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 91
- 239000002918 waste heat Substances 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 238000005381 potential energy Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000011084 recovery Methods 0.000 abstract description 10
- 238000007906 compression Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000006835 compression Effects 0.000 description 7
- 230000001172 regenerating effect Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
The utility model relates to the technical field of compressed air energy storage equipment, in particular to a compressed air energy storage and power station boiler coupling operation system, which comprises compression-cooling equipment, normal temperature gas storage equipment, a power station boiler and regenerative-expansion work doing equipment; the compression-cooling equipment comprises an air compressor set and a boiler air inlet heater; the regenerative-expansion work doing equipment comprises a boiler tail gas waste heat recoverer and an air turbine generator set; the boiler air inlet heater leads compressed air generated by the air compressor unit and boiler inlet air into normal-temperature air storage equipment after fully exchanging heat, and leads the heated boiler inlet air into a power station boiler to participate in combustion; the boiler tail gas waste heat recovery device recovers waste heat in the boiler tail gas and heats normal-temperature compressed air led out from the normal-temperature air storage device; the heated compressed air is directed to an air turbine generator set for generating electricity. Through the system, the problem of energy loss caused by compressed air energy storage and boiler operation can be effectively solved.
Description
Technical Field
The utility model relates to a compressed air energy storage equipment technical field especially relates to a compressed air energy storage and power plant boiler coupling operation system.
Background
At present, the mature large-scale energy storage technologies mainly comprise pumped storage, storage battery energy storage and compressed air energy storage. The pumped storage power station is a good way for storing a large amount of electric energy, but the construction of the pumped storage power station is strictly limited by geographical conditions, and the pumped storage power station is difficult to meet the requirement of large-scale popularization. The energy storage technology of the storage battery is relatively mature, the electric energy conversion efficiency is highest in the three energy storage modes, but the service life of the storage battery is usually only 3-5 years, the updating cost is high, and the post-treatment environmental pollution is serious. In contrast, the compressed air energy storage system has fewer construction limiting conditions, is environment-friendly and has higher comprehensive efficiency. However, a large amount of heat is generated in the compressed air energy storage and compression process, and the part of heat cannot be well utilized; the boiler not only needs to consume a large amount of heat, but also discharges a large amount of waste heat to the environment through boiler tail gas, and also causes a large amount of energy loss.
Disclosure of Invention
In order to solve the problem, the utility model provides a system of compressed air energy storage and power plant boiler coupling operation can effectively solve the problem of the energy loss that compressed air energy storage and boiler operation caused separately. The coupling system combines compressed air energy storage and boiler operation together, and a large amount of heat generated in the compressed air energy storage and compression process can be recycled by boiler inlet air; the boiler flue gas contains a large amount of waste heat which can be used for heating low-temperature compressed air, the compressed air is heated and then expanded to work, the gas work-doing capability can be effectively improved, and the compressed air energy storage and the boiler coupling operation system can be perfectly complementary.
The utility model discloses a realize through adopting following technical scheme:
the utility model provides a compressed air energy storage and power plant boiler coupling operating system which characterized in that: the system comprises compression-cooling equipment, normal-temperature gas storage equipment, a power station boiler and regenerative-expansion work-doing equipment; the compression-cooling equipment comprises an air compressor unit and a boiler air inlet heater, wherein the air compressor unit comprises a driving motor and an air compressor; the regenerative-expansion work doing equipment comprises a boiler tail gas waste heat recoverer and an air turbine generator set, and the air turbine generator set comprises an air turbine and a generator; the boiler air inlet heater is used for heat exchange between high-temperature compressed air generated by the air compressor and boiler inlet air cold air, the cooled low-temperature compressed air is introduced into normal-temperature air storage equipment, and meanwhile, the heated boiler inlet air is introduced into a power station boiler to participate in combustion; the boiler tail gas waste heat recoverer is used for heat exchange between boiler tail gas and low-temperature compressed air, the heated compressed air is guided into the air turbine for power generation, and the boiler tail gas after waste heat recovery is discharged into the atmosphere.
The compression-cooling equipment comprises at least one stage of air compressor set and boiler air inlet heaters which are in one-to-one correspondence with the air compressor set, air enters from an air inlet of the first stage of air compressor, air outlets of all stages of air compressors are respectively connected with compressed air inlets of the corresponding boiler air inlet heaters, compressed air outlets of all stages of boiler air inlet heaters are connected with an air inlet of the next stage of air compressor, and a compressed air outlet of the last stage of boiler air inlet heater is connected with an air inlet of normal-temperature air storage equipment; boiler inlet air entering the boiler inlet air heaters at all levels enters the power station boiler after heat exchange.
The regenerative-expansion work doing equipment comprises at least one stage of air turbine generator set and boiler tail gas waste heat recoverer which correspond to each other one by one; and the normal-temperature compressed air in the normal-temperature air storage device is guided into the boiler tail gas waste heat recoverer to exchange heat with the boiler tail gas, the compressed air is guided into the air turbine to expand and do work after the temperature of the compressed air is raised, the temperature of the compressed air after doing work is lowered, the compressed air is guided into the next-stage boiler tail gas waste heat recoverer again until the last stage is expanded and does work and then is discharged into the atmosphere.
Besides absorbing surplus electric energy of a power grid, the solar energy and wind energy generating electric energy are converted into potential energy through an air compressor and stored in compressed air.
The power station boiler also comprises a boiler water wall, a boiler superheater, a boiler reheater, a boiler economizer and an air preheater, and the boiler tail gas waste heat recoverer can be arranged in a same body with the boiler; and tail gas after combustion in a hearth of the power station boiler is discharged after sequentially passing through a boiler water-cooling wall, a boiler superheater, a boiler reheater, a boiler economizer, an air preheater and a boiler tail gas waste heat recoverer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a compressed air energy storage and power plant boiler coupling operation system specifically is the coupling operation between two processes of compressed air energy storage system's compression-cooling, backheat-expansion work and the boiler operation, and the compression heat energy that compressed air produced is by boiler recycle, and boiler tail gas's waste heat is effectively recycle by compressed air energy storage system again, has effectively overcome the shortcoming of independent operation separately. The efficiency of the compressed air energy storage system doing work through regenerative energy storage is higher, the utilization efficiency of fuel is integrally higher due to the fact that the discharge temperature of the power station boiler is reduced, and the efficiency of the whole system can be effectively improved by comprehensively considering the coupling operation of the compressed air energy storage system and the power station boiler.
2. The utility model discloses in, including air compressor unit, boiler air inlet heater, normal atmospheric temperature gas storage equipment, boiler tail gas waste heat recoverer and air turbine generating set, except that boiler tail gas waste heat recoverer and boiler arrange with the body, other equipment can set up alone, and two systems can move independently relatively. When the power grid has a large amount of electric power, the storage capacity of compressed air is large, the consumption of the compressed air is small, the running power of the boiler is adjusted to be low, and the reduction of the required regenerative capacity of the energy storage system is just met; when the power of the power grid is insufficient and needs to be supplemented, the storage capacity of compressed air is small, the consumption is large, the operating power of the boiler is increased, and the requirement for increasing the heat regeneration quantity required by the energy storage system is met; so that the compressed air energy storage and the boiler coupled operation system can be perfectly complementary.
3. In the air compression process, according to the designed storage pressure, the utility model adopts one-stage or multi-stage compression-cooling process, the compressed high-temperature and high-pressure air enters the boiler air inlet heater to heat the boiler air inlet, and simultaneously cools the compressed air, and the heated boiler air inlet enters the utility boiler to participate in combustion; if multi-stage compression is adopted, the cooled compressed air is compressed for the second stage and then cooled again until the pressure and the temperature required by storage are reached, and the required power consumption of the compressed air can be greatly reduced by multi-stage compression and constant-pressure cooling according to the thermodynamic principle.
4. In the regenerative-expansion process of the compressed air, the utility model adopts one-stage or multi-stage regenerative-expansion to do work according to the stored pressure, and the normal temperature compressed air enters the boiler tail gas waste heat recoverer and is guided into the air turbine to do work after being heated by the boiler tail gas; if multi-stage heat recovery-expansion is adopted, the expanded cold compressed air enters the boiler tail gas waste heat recoverer again for heating, then is guided into the air turbine to do work until the pressure is expanded to the atmospheric pressure, and the exhaust gas which does work is discharged into the atmosphere. According to the thermodynamic principle, the heat recovery can effectively provide the gas expansion work-doing capacity and the heat efficiency.
5. This system can not only absorb surplus electric power in the electric wire netting, can also absorb the electric energy that solar energy and wind energy sent, converts the electric energy into air potential energy through air compressor and stores compressed gas in, makes the utility model discloses can effectively increase the consumption of new forms of energy electric power, satisfy the requirement as the basic power of electric wire netting, can play the effect of "peak clipping fills in millet" as the peak regulation power station of electric wire netting again.
6. The utility model discloses in, because equipment is relatively independent, it is little to change former power station, can directly reform transform on the basis of current thermal power station.
7. The boiler equipment further comprises a boiler water-cooled wall, a boiler superheater, a boiler reheater, a boiler economizer and an air preheater, the boiler tail gas waste heat recoverer can be arranged in a same body with the boiler, flue gas after combustion of the boiler hearth sequentially passes through the boiler water-cooled wall, the boiler superheater, the boiler reheater, the boiler economizer, the air preheater and the boiler tail gas waste heat recoverer and then is discharged, heat of tail gas after combustion of the boiler hearth is fully utilized, and the temperature of the tail gas discharged into the atmosphere is reduced.
Drawings
The invention will be described in further detail with reference to the following description taken in conjunction with the accompanying drawings and detailed description, in which:
fig. 1 is a schematic structural view of the present invention;
the labels in the figure are:
1. the device comprises a boiler air inlet heater, 2 a normal-temperature air storage device, 3 an air compressor, 4 a driving motor, 5 an air preheater, 6 a boiler tail gas waste heat recoverer, 7 a power station boiler, 8 an air turbine, 9 a generator, 10 a boiler economizer, 11 a desulfurization, denitrification and dust removal device, 12 and a chimney.
Detailed Description
Example 1
As the basic embodiment of the utility model, the utility model discloses a compressed air energy storage and power plant boiler coupling operation system, including compression-cooling apparatus, power plant boiler 7, normal atmospheric temperature gas storage equipment 2, backheating-inflation acting equipment. The compression-cooling device comprises a boiler intake air heater 1, an air compressor 3 and a driving motor 4 for driving the air compressor 3 to operate. The heat recovery-expansion work doing equipment comprises a boiler tail gas waste heat recovery device and an air turbine generator set, and the air turbine generator set comprises an air turbine 8 and a generator 9. The boiler air inlet heater 1 comprises a compressed air inlet, a compressed air outlet, a boiler air inlet atmosphere air inlet and a boiler air inlet outlet. Wherein, the compressed air outlet of the boiler air inlet heater 1 is connected with the normal temperature air storage device 2, and the boiler air inlet and outlet is connected with the utility boiler 7.
Example 2
As a preferred embodiment of the present invention, the present invention includes a compressed air energy storage and power station boiler coupled operation system, which includes a compression-cooling device, a normal temperature gas storage device 2, a boiler and a regenerative-expansion work-applying device. The compression-cooling equipment comprises a multi-stage air compressor unit and boiler air inlet heaters 1 which are in one-to-one correspondence with the air compressor unit, wherein the air compressor unit comprises a driving motor 4 and an air compressor 3.
Air enters from an air inlet of the first-stage air compressor 3, air outlets of the air compressors 3 are respectively connected with compressed air inlets of the boiler air inlet heaters 1 corresponding to the air outlets, compressed air outlets of the boiler air inlet heaters 1 are connected with air inlets of the air compressors 3 of the next stage, multi-stage compression of the air is achieved, and compressed air after multi-stage compression enters the normal-temperature air storage device 2 from a compressed air outlet of the last-stage boiler air inlet heater 1 to be stored.
Boiler inlet air entering the boiler inlet air heaters 1 at all levels respectively enters the air preheater 5 after heat exchange, and is heated by the air preheater 5 and then is guided into a boiler hearth; and boiler tail gas after combustion in the boiler furnace is discharged after heat exchange of the boiler tail gas waste heat recoverer 6.
The heat regeneration-expansion work doing equipment comprises a plurality of stages of air turbine generator sets and boiler tail gas waste heat recoverers 6 which correspond to one another one by one. The air turbine generator set includes an air turbine 8 and a generator 9. The normal temperature compressed air in the normal temperature air storage device 2 is led into the boiler tail gas waste heat recovery device 6 to exchange heat with the boiler tail gas, the compressed air with the increased temperature is led into the air turbine 8 to drive the generator 9 to generate electricity, the expanded low temperature compressed air is led into the boiler tail gas waste heat recovery device 6 of the next stage, and is exhausted into the atmosphere after being subjected to multi-stage regenerative expansion work.
Example 3
As another preferred embodiment of the present invention, the present invention includes a compressed air energy storage and power station boiler coupled operation system, which includes a compression-cooling device, a normal temperature gas storage device 2, a power station boiler 7 and a regenerative-expansion work-applying device. The compression-cooling device comprises a boiler intake air heater 1, an air compressor 3 and a driving motor 4 for driving the air compressor 3 to operate. The compressor unit stores the energy in the potential energy of compressed air through the air compressor 3 from the surplus electric energy of the power grid or the electric energy generated by solar energy and wind energy.
The power station boiler 7 comprises a boiler water wall, a boiler superheater, a boiler reheater, a boiler economizer 10, an air preheater 5 and a boiler furnace, wherein the boiler tail gas waste heat recoverer 6 and the boiler can be arranged in a same body. And the tail gas combusted in the boiler hearth is discharged after sequentially passing through a boiler water-cooling wall, a boiler superheater, a boiler reheater, a boiler economizer 10, an air preheater 5 and a boiler tail gas waste heat recoverer 6.
The heat regeneration-expansion work doing equipment comprises a boiler tail gas waste heat recoverer 6, an air turbine 8 and a generator 9. Boiler air inlet heater 1 is used for leading-in normal atmospheric temperature gas storage equipment 2 after cooling with the high temperature compressed gas that air compressor 3 produced, and boiler air inlet heater 1 is used for leading-in air heater 5 after the boiler inlet air of normal atmospheric temperature is heated, leading-in boiler furnace after air heater 5 further heats. And the normal-temperature compressed gas in the normal-temperature gas storage device 2 is led into a boiler tail gas waste heat recoverer 6, so that the boiler tail gas waste heat recoverer exchanges heat with the combusted tail gas, heats the tail gas, and then enters an air turbine 8 for driving a generator 9 to operate.
Example 4
As the best mode of the utility model, refer to the attached figure 1 of the specification, the utility model discloses a compressed air energy storage and power plant boiler coupling operation system, mainly be the compression-cooling of compressed air energy storage system, backheat-expansion two processes of doing work and the coupling operation between the boiler operation. The system specifically comprises compression-cooling equipment, normal-temperature gas storage equipment 2, a power station boiler 7 and regenerative-expansion work-doing equipment. The normal-temperature air storage device 2 can be a constant-volume storage device or a constant-pressure storage device and is mainly used for storing cooled compressed air.
The compression-cooling equipment comprises a plurality of stages of air compressor sets and boiler air inlet heaters 1 which are in one-to-one correspondence with the air compressor sets, wherein each stage of air compressor set comprises an air compressor 3 and a driving motor 4 which respectively drives the air compressor 3 to operate. The heat regeneration-expansion work doing equipment comprises a multi-stage air turbine generator set and a boiler tail gas waste heat recoverer 6. The air turbine generator set includes air turbines 8 and generators 9 in one-to-one correspondence with the air turbines 8. The power station boiler 7 comprises a boiler water wall, a boiler superheater, a boiler reheater, a boiler economizer 10, an air preheater 5, a boiler furnace, a desulfurization and denitrification residual dust removal device 11 and a chimney 12.
The boiler air inlet heater 1 is an air-air heat exchanger. The air compressor unit transfers energy to potential energy of compressed air through the air compressor 3 from surplus electric power in a power grid or electric energy generated by solar energy and wind energy. The compression-cooling device specifically comprises a first-stage air compressor 3, a second-stage air compressor 3, a first-stage boiler intake air heater 1 and a second-stage boiler intake air heater 1. The first-stage boiler air inlet heater 1 and the second-stage boiler air inlet heater 1 comprise a compressed air inlet, a compressed air outlet, a boiler air inlet and a boiler air outlet. The air outlet of the first-stage air compressor 3 is connected with the compressed air inlet of the first-stage boiler air inlet heater 1, the compressed air outlet of the first-stage boiler air inlet heater 1 is connected with the air inlet of the second-stage air compressor 3, the air outlet of the second-stage air compressor 3 is connected with the compressed air inlet of the second-stage boiler air inlet heater 1, and the compressed air outlet of the second-stage boiler air inlet heater 1 is connected with the air inlet of the normal-temperature air storage device 2. The boiler inlet air heated by the boiler inlet air heater 1 is guided into the boiler inlet air preheater 5 for further heating and then is sent into the boiler hearth for combustion.
The boiler tail gas waste heat recoverer 6 is an air-air heat exchanger. The regenerative-expansion work device specifically includes a first-stage air turbine 8 and a second-stage air turbine 8. The normal temperature compressed air in the normal temperature air storage device 2 is guided into the boiler tail gas waste heat recovery device 6 to exchange heat with the boiler tail gas, the compressed air is guided into the first stage air turbine 8 to expand and do work after the temperature of the compressed air is raised, the low temperature compressed air after the work is conducted is guided into the second stage boiler tail gas waste heat recovery device 6 again to be subjected to heat exchange with the boiler tail gas and then guided into the next stage air turbine 8 to expand and do work until the last stage is exhausted into the atmosphere.
The operation system comprises a boiler operation flow and a compressed air energy storage system operation flow. The boiler operation process specifically comprises the following steps: the boiler air is heated by high-temperature compressed air in the first-stage boiler air inlet heater 1 and the second-stage boiler air inlet heater 1 respectively, flows out of boiler air inlet air outlets of the first-stage boiler air inlet heater 1 and the second-stage boiler air inlet heater 1 respectively, flows into the air preheater 5 to be continuously heated to a rated temperature, enters a boiler hearth to be combusted, and high-temperature flue gas sequentially transfers heat to a boiler water-cooled wall, a boiler superheater, a boiler reheater, a boiler economizer 10, the air preheater 5 and a boiler tail gas waste heat recoverer 6, enters a chimney 12 to be discharged into the atmosphere after being subjected to tail gas treatment through a desulfurization and denitrification and dust removal device 11.
The operation flow of the compressed air energy storage system comprises a compression-cooling process and a heat regeneration-expansion work doing process. The compression-cooling process is specifically as follows: unstable electricity generated by solar energy, wind energy and the like and surplus electric energy of a power grid in the time of using electricity to trough are used for compressing air, and multistage compression is realized through the air compressor 3, so that the power consumption of compressed gas is reduced. The compressed high-temperature compressed gas enters the corresponding boiler air inlet heater 1 to heat the inlet air of the boiler, and meanwhile, the compressed air is subjected to medium-pressure cooling in the process. The compressed air is cooled to the temperature close to the normal temperature and is filled into the normal temperature air storage device 2 for storage.
The heat regeneration-expansion work doing process specifically comprises the following steps: the compressed air is guided into a boiler tail gas waste heat recoverer 6 from the normal-temperature air storage device 2 to be heated, the waste heat of the boiler tail gas is recovered, and then the compressed air enters an air turbine 8 to do work. After the compressed air passes through the boiler tail gas waste heat recoverer 6 and the multistage regenerative expansion of the air turbine 8 to do work, exhaust gas is discharged into the atmosphere.
The temperature of the compressed air is sharply reduced after expansion, and the expanded low-temperature air can also be used for condensing steam discharged by a steam turbine. The compressed air may be used in conjunction with a system for condensing turbine exhaust with compressed air.
In conclusion, after the ordinary skilled in the art reads the document of the present invention, the technical solution and technical idea of the present invention do not need creative mental labor and make other various corresponding transformation schemes, which all belong to the protection scope of the present invention.
Claims (5)
1. The utility model provides a compressed air energy storage and power plant boiler coupling operating system which characterized in that: comprises a compression-cooling device, a normal temperature gas storage device (2), a power station boiler (7) and a regenerative-expansion working device; the compression-cooling equipment comprises an air compressor unit and a boiler air inlet heater (1), wherein the air compressor unit comprises a driving motor (4) and an air compressor (3); the regenerative-expansion work-doing equipment comprises a boiler tail gas waste heat recoverer (6) and an air turbine generator set, and the air turbine generator set comprises an air turbine (8) and a generator (9); the boiler inlet air heater (1) is used for cooling compressed air generated by the air compressor (3) and boiler inlet air after sufficient heat exchange, guiding the cooled compressed air into the normal-temperature air storage device (2), and meanwhile guiding the heated boiler inlet air into the power station boiler (7) to participate in combustion; the boiler tail gas waste heat recoverer (6) is used for recovering waste heat in the boiler tail gas and heating normal-temperature compressed air led out from the normal-temperature air storage device (2); the heated compressed air is used to introduce air into an air turbine (8) for generating electricity.
2. The system of claim 1 for coupled operation of a compressed air energy storage and utility boiler, wherein: the compression-cooling equipment comprises at least one stage of air compressor unit and boiler air inlet heaters (1) which are in one-to-one correspondence with the air compressor unit, air enters from an air inlet of a first stage of air compressor (3), air outlets of all stages of air compressors (3) are respectively connected with compressed air inlets of corresponding boiler air inlet heaters (1), compressed air outlets of all stages of boiler air inlet heaters (1) are connected with an air inlet of the next stage of air compressor (3), and compressed air outlets of the last stage of boiler air inlet heaters (1) are connected with an air inlet of normal-temperature air storage equipment (2); boiler inlet air entering the boiler inlet air heaters (1) at all levels enters the power station boiler (7) after heat exchange.
3. A compressed air energy storage and utility boiler coupled operation system according to claim 1 or 2, characterized in that: the regenerative-expansion work doing equipment comprises at least one stage of air turbine generator set and a boiler tail gas waste heat recoverer (6) which correspond to each other one by one; and the normal-temperature compressed air in the normal-temperature air storage device (2) is used for leading the normal-temperature compressed air into the boiler tail gas waste heat recoverer (6) to exchange heat with the boiler tail gas, the temperature of the compressed air is increased and then is used for leading the compressed air into the air turbine (8) to perform expansion work, the temperature of the compressed air after the work is performed is reduced and is used for leading the compressed air into the next-stage boiler tail gas waste heat recoverer (6) again until the last stage is exhausted into the atmosphere after the expansion work.
4. A compressed air energy storage and utility boiler coupled operation system according to claim 3, characterized in that: the solar energy and wind energy generating electric energy are used for converting potential energy through the air compressor (3) and storing the potential energy into compressed air.
5. The system of claim 4, wherein the system comprises: the power station boiler (7) further comprises a boiler water wall, a boiler superheater, a boiler reheater, a boiler economizer (10) and an air preheater (5), and the boiler tail gas waste heat recoverer (6) and the boiler are arranged in a same body; and tail gas combusted in a hearth of the power station boiler (7) is discharged after sequentially passing through a boiler water-cooling wall, a boiler superheater, a boiler reheater, a boiler economizer (10), an air preheater (5) and a boiler tail gas waste heat recoverer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467662.5U CN214464464U (en) | 2021-03-04 | 2021-03-04 | Compressed air energy storage and power station boiler coupling operation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467662.5U CN214464464U (en) | 2021-03-04 | 2021-03-04 | Compressed air energy storage and power station boiler coupling operation system |
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| Publication Number | Publication Date |
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| CN214464464U true CN214464464U (en) | 2021-10-22 |
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| CN202120467662.5U Active CN214464464U (en) | 2021-03-04 | 2021-03-04 | Compressed air energy storage and power station boiler coupling operation system |
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- 2021-03-04 CN CN202120467662.5U patent/CN214464464U/en active Active
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