CN111456824A - Device for generating constant-value compressed air energy storage power generation by ultralow-temperature waste heat recovery - Google Patents
Device for generating constant-value compressed air energy storage power generation by ultralow-temperature waste heat recovery Download PDFInfo
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- CN111456824A CN111456824A CN202010394696.6A CN202010394696A CN111456824A CN 111456824 A CN111456824 A CN 111456824A CN 202010394696 A CN202010394696 A CN 202010394696A CN 111456824 A CN111456824 A CN 111456824A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 22
- 238000011084 recovery Methods 0.000 title claims description 16
- 238000004146 energy storage Methods 0.000 title claims description 6
- 238000010248 power generation Methods 0.000 title claims description 5
- 230000006835 compression Effects 0.000 claims abstract description 24
- 238000007906 compression Methods 0.000 claims abstract description 24
- 230000026683 transduction Effects 0.000 claims abstract description 22
- 238000010361 transduction Methods 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 74
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 7
- 239000010687 lubricating oil Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B23/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01B23/08—Adaptations for driving, or combinations with, pumps
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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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/006—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for driven by steam engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The device for generating electricity by storing energy of compressed air with a fixed value generated by recycling waste heat at ultralow temperature comprises a pneumatic transduction booster air pump, a working medium evaporator, a working medium condenser, a booster air pump compression cylinder, an air storage tank, a booster air pump, an air storage tank, an air inlet, a booster air pump, a compressed air storage tank, an air outlet, a booster air pump and an air storage tank. The invention has the advantages that: 1. the efficiency of various waste heat energy recycling equipment with the temperature of more than 80 ℃ can be further improved, and the economic and technical problems of recycling ultralow temperature waste heat energy with the temperature of less than 60 ℃ and 5-10 ℃ higher than the atmospheric environment become feasible. 2. The problem that working medium is directly input into an air power generator set running at a high speed to do work and is polluted by lubricating oil is solved. 3. The air power unit generates electricity, and is directly discharged without pollution.
Description
Technical Field
The invention relates to waste heat energy recovery power generation by applying an organic Rankine cycle principle. In particular to a device for generating electricity by energy storage of constant-value compressed air generated by ultra-low-temperature waste heat recovery.
Background
Enterprises in thermal power, metallurgy, petroleum, chemical industry, cement, paper making, printing and dyeing, textile, sugar industry, food, wine industry, pharmaceutical factories, ships, geothermal utilization and the like have a large amount of water, gas and waste heat energy emission in the production process. At present, for heat energy discharged at the temperature of more than 80 ℃, the waste heat energy is recovered by applying an organic Rankine cycle principle, and expansion pressure energy generated after heat absorption of an organic working medium is directly input into a pneumatic power unit (such as a screw expansion power generator unit) to generate power, so that the practical application of complete equipment is developed and produced. However, the problem that the efficiency of the waste heat energy recycling equipment below 80 ℃ is low, particularly how to efficiently recycle ultralow-temperature waste heat energy which is lower than 60 ℃ and higher than 5-10 ℃ in the atmospheric environment, and the problem that the heat exchange efficiency of the working medium is reduced because the working medium is directly input into the high-speed running air power machine to do work and is polluted by lubricating oil are not well solved all the time.
Disclosure of Invention
The invention provides a device for generating energy stored by constant-value compressed air generated by ultralow-temperature waste heat recovery, which aims to further improve the efficiency of various waste heat energy recovery and utilization equipment below 80 ℃, particularly can efficiently recover ultralow-temperature waste heat energy which is lower than 60 ℃ and higher than 5-10 ℃ of the atmospheric environment, and avoids working media from being directly input into an air power machine running at a high speed to work and being polluted by lubricating oil.
The device for generating electricity by energy storage of the fixed value compressed air generated by ultralow temperature waste heat recovery is characterized by comprising a pneumatic transduction booster air pump, wherein a high-pressure working medium air inlet of the pneumatic transduction booster air pump is connected with a working medium evaporator, an air outlet of the pneumatic transduction booster air pump is connected with a working medium condenser, an inlet of a compression air cylinder of the pneumatic transduction booster air pump is communicated with the atmosphere, an outlet of the compression air cylinder of the pneumatic transduction booster air pump is connected with a normal-temperature high-pressure air storage tank, the pneumatic transduction booster air pump is pushed to compress air by the pressure of working medium evaporation expansion gas, the compressed air generating the required rated pressure value is dynamically or statically stored, a gas pipe of the normal-temperature high-pressure air storage tank is.
The invention has the advantages that: 1. by applying the pneumatic transduction booster air pump technology, the working medium expansion acting time and the aging are sufficient due to controllability, the theoretical static balance effect is approximately achieved, and the efficiency of converting the working medium expansion energy into the compressed air energy is improved. Therefore, the efficiency of various waste heat energy recycling equipment with the temperature of more than 80 ℃ can be further improved, particularly the problem of the efficiency of ultralow temperature waste heat recycling can be solved, and the economic and technical problem of ultralow temperature waste heat energy recycling at the temperature of less than 60 ℃ and 5-10 ℃ higher than the atmospheric environment becomes feasible. The stability and the reliability can be improved when the device is used for generating the waste heat energy recovery air power unit. 2. The working medium is closed in an organic Rankine cycle loop, and the air energy conversion device operates in the fine and low-speed pneumatic energy conversion booster air pump, so that the problem that the heat exchange efficiency of the working medium is reduced because the working medium is directly input into the high-speed operating aerodynamic generating set to work and is polluted by lubricating oil is solved. 3. The normal temperature compressed air is input into the aerodynamic unit for power generation, the exhaust has no system resistance, no pollution is directly discharged, the full work efficiency is high, and the environmental protection problem caused by heat loss and easy leakage when the working medium directly works is solved. 4. The normal temperature compressed air energy can be stored in a loss-free mode in a large scale, the residual energy recovery equipment can be widely applied to a system with unstable residual heat gas energy, and meanwhile, the requirements of system maintenance and adaptation to power dispatching off-peak operation are favorably met. 5. The usage amount of the high-performance high-value organic working medium can be greatly reduced.
Drawings
FIG. 1 is a schematic diagram of a pneumatic transduction booster air pump
FIG. 2 is a block diagram of the operation process of the pneumatic transduction booster air pump of the present invention
In fig. 1: 1. working medium drives the air inlet, 2, working medium gas drives the switching-over valve, 3, working medium gas drives cylinder and piston (divide two rooms on the left and right), 4, left air compression cylinder and piston, 5, right air compression cylinder and piston, 6, left atmospheric air inlet, 7, first check valve, 8, second check valve, 9, third check valve, 10, fourth check valve, 11, left thimble type pneumatic valve, 12, right thimble type pneumatic valve, 13, working medium lead air return outlet, 14, working medium drives the air return outlet, 15, right atmospheric air inlet, 16, transduction pressurized air outlet, 17, pneumatic transduction pressurized air pump casing.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
in fig. 1, a pneumatic energy conversion charge air pump is installed between a working medium evaporator (evaporator) and a working medium condenser (condenser) loop and connected with a normal-temperature constant-value compressed air storage tank (storage tank for short); in the pneumatic transduction booster air pump casing 17, there is working medium air driving cylinder and piston 3 and left air compression cylinder and piston 4 and right air compression cylinder and piston 5 three-in-one cross piston. High-pressure working medium gas after heat absorption and expansion in the evaporator is divided into two paths of air guide and driving gas to do work after entering through a working medium driving gas inlet 1;
when the pilot gas pushes the working medium gas drive reversing valve 2 to the right and keeps the same, the drive gas is conducted to enter the working medium gas drive cylinder and the right chamber of the piston 3 to do work, the piston is pushed to start to move leftwards, and meanwhile, the exhaust channel of the working medium gas drive cylinder and the left chamber of the piston 3 and the working medium drive gas return outlet 14 is also conducted. At the moment, the left air compression cylinder and the piston 4 are in a compressed air state, the generated compressed air is cooperatively controlled by the first check valve 7, the second check valve 8 and the third check valve 9 which are connected in series on a pipeline, so that the compressed air with rated pressure is ensured to be discharged through the transduction pressurized air outlet 16, and meanwhile, the right air compression cylinder and the piston 5 are cooperatively controlled by the third check valve 9 and the fourth check valve 10 which are connected in series on the pipeline in an air suction state, so that atmospheric air is ensured to be sucked from the right atmospheric air inlet 15; when the working medium gas drives the cylinder and the left side surface of the piston 3 to move in place, the left thimble type air valve 11 is triggered to open;
leading gas reversely pushes the working medium gas drive reversing valve 2 to the left position and keeps the working medium gas drive reversing valve, conducting drive gas to enter the working medium gas drive cylinder and the left chamber of the piston 3 to do work, pushing the piston to start moving rightwards, and simultaneously conducting an exhaust channel of the working medium gas drive cylinder and the right chamber of the piston 3 and the working medium drive gas return outlet 14; at the moment, the right air compression cylinder and the piston 5 are in a compressed air state, the generated compressed air is cooperatively controlled by the second one-way valve 8, the third one-way valve 9 and the fourth one-way valve 10 which are connected in series on a pipeline to ensure that the compressed air with rated pressure is discharged through the transduction pressurized air outlet 16, and simultaneously, the left air compression cylinder and the piston 4 are cooperatively controlled by the first one-way valve 7 and the second one-way valve 8 which are connected in series on the pipeline to ensure that atmospheric air is sucked from the left atmospheric air inlet 6 in an air suction state. When the working medium gas drives the cylinder and the right side surface of the piston 3 to move in place, the right thimble type gas valve 12 is triggered to be opened, so that the pilot gas is reversed again to push the working medium gas driving reversing valve 2 to the right and keep the working medium gas driving reversing valve 2, and then the next working cycle is started;
after working medium pilot gas and driving gas do work in the process, the working medium pilot gas and the driving gas return gas respectively return to the condenser through the working medium pilot gas return gas outlet 13 and the working medium driving gas return gas outlet 14 to circularly operate; because the working medium gas drives the cylinder and piston 3, the left air compression cylinder and piston 4, the right air compression cylinder and piston 5 and the design has the area and volume ratio difference, the low-pressure working medium drives and acts on the large-area piston, and the compressed air with the rated high pressure value can be generated by pressurizing at the small-area piston end, so the booster pump and the series-parallel combination thereof continuously reciprocate and circulate, and the compressed air with the rated pressure value and the volume quantity generated by the driving of the working medium gas can be dynamically or statically stored and utilized.
In fig. 2, the system works through the following processes:
1. low-temperature hot gas enters the evaporator through a recovery circulation inlet, is discharged after exchanging heat with a low-pressure working medium and is continuously subjected to hot gas recovery circulation;
2. the working medium absorbing heat and expanding enters a pneumatic energy conversion booster air pump to compress air to do work;
3. the working medium after acting and pressure releasing enters a working medium condenser to become a low-temperature liquid state, and the low-temperature liquid state repeatedly circulates and enters a working medium evaporator;
4. high-pressure air enters a normal-temperature constant-value compressed air storage tank from a pneumatic energy-conversion booster air pump;
5. high-pressure air is input into the compressed air generating set from the storage tank to generate electricity;
6. the high pressure air in the storage tank can also be sent to a compressed air supply station to supply air to an aerodynamic public transportation system or other social applications.
Claims (3)
1. The device for generating electricity by energy storage of the compressed air with a fixed value generated by ultralow temperature waste heat recovery is characterized by comprising a pneumatic transduction booster air pump, wherein a high-pressure working medium air inlet of the pneumatic transduction booster air pump is connected with a working medium evaporator, an air outlet of the pneumatic transduction booster air pump is connected with a working medium condenser, an inlet of a compression air cylinder of the pneumatic transduction booster air pump is communicated with the atmosphere, an outlet of the compression air cylinder of the pneumatic transduction booster air pump is connected with a normal-temperature high-pressure air storage tank, the pneumatic transduction booster air pump is pushed to compress the air by the pressure of the working medium evaporation expansion gas, the compressed air with the required rated pressure value is dynamically or statically stored, the normal-temperature high-pressure air storage.
2. The ultralow temperature waste heat recovery and generation constant value compressed air energy storage and power generation device as claimed in claim 1, wherein the pneumatic energy conversion and pressurization air pump is installed between the working medium evaporator and the working medium condenser loop and is connected with the normal temperature constant value compressed air storage tank; in a casing (17) of the pneumatic transduction booster air pump, a working medium air driving cylinder and a cross-shaped piston integrating three functions of a piston (3), a left air compression cylinder and a piston (4), a right air compression cylinder and a piston (5) are arranged, and high-pressure working medium gas after heat absorption and expansion in an evaporator is divided into two paths of air guiding and driving air to do work after entering through a working medium driving air inlet (1);
when the pilot gas pushes the working medium gas to drive the reversing valve (2) to the right and keeps the working medium gas, the conducting driving gas enters the working medium gas to drive the cylinder and the right chamber of the piston (3) to do work, and pushes the piston to start to move leftwards, meanwhile, an exhaust channel of a working medium gas driving cylinder and a left chamber of the piston (3) and a working medium driving gas return outlet (14) is also communicated, at the moment, the left air compression cylinder and the piston (4) are in a compressed air state, the generated compressed air is cooperatively controlled by a first one-way valve (7), a second one-way valve (8) and a third one-way valve (9) which are connected in series on a pipeline, the compressed air with rated pressure is ensured to be exhausted through an energy conversion supercharging air outlet (16), and simultaneously, the right air compression cylinder and the piston (5) are in an air suction state, the pipeline is cooperatively controlled by a third one-way valve (9) and a fourth one-way valve (10) which are connected in series, so that atmospheric air is ensured to be sucked from a right atmospheric air inlet (15); when the working medium gas drives the cylinder and the left side surface of the piston (3) to move in place, the left thimble type air valve (11) is triggered to open;
leading gas reversely pushes the working medium gas drive reversing valve (2) to the left and keeps the working medium gas drive reversing valve, conducting drive gas to enter the working medium gas drive cylinder and the left chamber of the piston (3) to do work, pushing the piston to start moving rightwards, and simultaneously conducting an exhaust channel of the working medium gas drive cylinder and the right chamber of the piston (3) and a working medium drive gas return outlet (14); at the moment, the right air compression cylinder and the piston (5) are in an air compression state, the generated compressed air is cooperatively controlled by a second one-way valve (8), a third one-way valve (9) and a fourth one-way valve (10) which are connected in series on a pipeline, the compressed air with rated pressure is ensured to be discharged through an energy conversion pressurized air outlet (16), meanwhile, the left air compression cylinder and the piston (4) are in an air suction state and cooperatively controlled by a first one-way valve (7) and a second one-way valve (8) which are connected in series on the pipeline, the atmospheric air is ensured to be sucked from a left atmospheric air inlet (6), when the working medium gas drives the cylinder and the right side surface of the piston (3) to move in place, a right thimble type air valve (12) is triggered to be opened, the pilot gas is enabled to be reversed again, the working medium gas drives the reversing valve (2) to keep the right position, and;
after working medium pilot gas and driving gas do work in the process, the working medium pilot gas and the driving gas return gas respectively return to the condenser for circulating operation through a working medium pilot gas return gas outlet (13) and a working medium driving gas return gas outlet (14); because the working medium gas drives the cylinder and the piston (3), the left air compression cylinder and the piston (4), the right air compression cylinder and the piston (5) and the specific difference of area and volume is designed, the low-pressure working medium drives and acts on the large-area piston, and the compressed air with the rated high pressure value can be generated by pressurizing at the small-area piston end, so that the booster pump and the series-parallel combination thereof continuously carry out reciprocating circulation work, and the compressed air with the rated pressure value and the volume quantity generated by driving the working medium gas can be ensured to be dynamically or statically stored and utilized.
3. The device for generating electricity by generating fixed-value compressed air through ultralow-temperature waste heat recovery according to claim 1, is characterized in that the system works in the following process:
A. low-temperature hot gas enters the evaporator through a recovery circulation inlet, is discharged after exchanging heat with a low-pressure working medium and is continuously subjected to hot gas recovery circulation;
B. the working medium absorbing heat and expanding enters a pneumatic energy conversion booster air pump to compress air to do work;
C. the working medium after acting and pressure releasing enters a working medium condenser to become a low-temperature liquid state, and the low-temperature liquid state repeatedly circulates and enters a working medium evaporator;
D. high-pressure air enters a normal-temperature constant-value compressed air storage tank from a pneumatic energy-conversion booster air pump;
E. high-pressure air is input into the compressed air generating set from the storage tank to generate electricity;
F. the high pressure air in the storage tank can also be sent to a compressed air supply station to supply air to an aerodynamic public transportation system or other social applications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394696.6A CN111456824A (en) | 2020-05-12 | 2020-05-12 | Device for generating constant-value compressed air energy storage power generation by ultralow-temperature waste heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394696.6A CN111456824A (en) | 2020-05-12 | 2020-05-12 | Device for generating constant-value compressed air energy storage power generation by ultralow-temperature waste heat recovery |
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| Publication Number | Publication Date |
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| CN111456824A true CN111456824A (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010394696.6A Pending CN111456824A (en) | 2020-05-12 | 2020-05-12 | Device for generating constant-value compressed air energy storage power generation by ultralow-temperature waste heat recovery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229092A (en) * | 2020-10-19 | 2021-01-15 | 中国科学院理化技术研究所 | Liquid air energy storage cold and hot air combined supply system |
| CN112727665A (en) * | 2021-02-02 | 2021-04-30 | 济宁圣峰环宇新能源技术有限公司 | Rankine cycle type new energy engine system |
-
2020
- 2020-05-12 CN CN202010394696.6A patent/CN111456824A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229092A (en) * | 2020-10-19 | 2021-01-15 | 中国科学院理化技术研究所 | Liquid air energy storage cold and hot air combined supply system |
| CN112727665A (en) * | 2021-02-02 | 2021-04-30 | 济宁圣峰环宇新能源技术有限公司 | Rankine cycle type new energy engine system |
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Application publication date: 20200728 |