CN104487662A - Triple expansion waste heat recovery system and method - Google Patents
Triple expansion waste heat recovery system and method Download PDFInfo
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- CN104487662A CN104487662A CN201380034936.XA CN201380034936A CN104487662A CN 104487662 A CN104487662 A CN 104487662A CN 201380034936 A CN201380034936 A CN 201380034936A CN 104487662 A CN104487662 A CN 104487662A
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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
- F01K25/103—Carbon dioxide
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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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
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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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/02—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
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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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
- F01K7/22—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating
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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
- Y02E20/14—Combined heat and power generation [CHP]
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A waste heat recovery system is provided. The waste heat recovery system includes a Rankine cycle system for circulating a working fluid. The Rankine cycle system includes at least one first waste heat recovery boiler configured to transfer heat from a heat source to the working fluid. The Rankine cycle system also includes a first expander configured to receive the heated working fluid from the at least one first waste heat recovery boiler. Further, the Rankine cycle system includes a second expander and a third expander coupled to at least one electric generator. The waste heat recovery system also includes a condenser configured to receive the working fluid at low pressure from the first expander, the second expander and the third expander for cooling and a pump connected to the condenser for receiving a cooled and condensed flow of the working fluid from the condenser.
Description
Technical field
The application is broadly directed to generating, and relates more specifically to a kind of system and method for reclaiming used heat from multiple thermals source with the different temperatures produced for electric power.
Background technique
Many industrial electrical demands may benefit from such power generation system: described power generation system provides electric power or machine power using minimum environmetal impact and easily can be merged in existing electrical network or to be arranged rapidly as independently unit.Such as the internal-combustion engine of combustion gas turbine or large reciprocating motor is suitable for generating electricity in commercial Application, but it depends on the fuel that cost improves gradually, and produces effulent and used heat.Producing a kind of method of electric power when not increasing the output of effulent and do not need additional fuel by the used heat of internal-combustion engine is circulate at the application end.The end, recycles the used heat from the thermal source being such as motor, and thermal energy is become electric power.Circulate in the end that Rankine cycle is applied to usually for large combustion engines.Rankine cycle is also used to be generated electricity by underground heat or industrial heat resources.Basic Rankine cycle comprises turbogenerator, boiler, condenser and feed pump.
Be arranged to be produced in the legacy system of electric power by used heat at one, utilize carbon dioxide to use together with regenerator as the Rankine cycle system of working fluid.But, because the boiler inlet temperature of working fluid is raising after regenerator, therefore, it is possible to be restricted from the amount of the heat of waste heat source recovery.Efficiency of boiler declines, and heat input and electric power output are restricted.
Therefore, exist for utilizing maximum used heat and the demand of the effective Rankine cycle system of the clean electric power output of generation raising.
Summary of the invention
According to embodiments of the invention, provide a kind of Waste Heat Recovery System (WHRS).This Waste Heat Recovery System (WHRS) comprises the Rankine cycle system for making working fluid cycles.Rankine cycle system comprises at least one first heat recovery boiler being configured to heat is passed to working fluid from thermal source.Rankine cycle system also comprises and is configured to receive from the first expander of the working fluid of the heating of at least one the first heat recovery boiler.In addition, Rankine cycle system comprises the second expander and the 3rd expander that are attached at least one generator.Waste Heat Recovery System (WHRS) also comprise be configured to receive from the first expander, the second expander and the 3rd expander the working fluid being in low pressure for cooling condenser and be connected to the pump of condenser for the cooling and condensate stream that receive the working fluid of condenser, wherein, this pump is configured to the working fluid of condensation to be pumped to the 3rd liquid stream entered in the 3rd expander entering the second liquid stream in the second expander and working fluid entering main liquid stream in the first heat recovery boiler, working fluid of working fluid.
According to embodiments of the invention, provide a kind of Waste Heat Recovery System (WHRS).This Waste Heat Recovery System (WHRS) comprises the Rankine cycle system for making working fluid cycles.Rankine cycle system comprises at least one first heat recovery boiler being configured to heat is passed to working fluid from hot air flow or flue gas stream.Rankine cycle system also comprises and is configured to receive from the first expander of the working fluid of the heating of at least one the first heat recovery boiler.In addition, Rankine cycle system comprises the second expander being attached to the first expander and the 3rd expander being attached to the second expander, makes the first expander, the second expander and the 3rd expander be coupled to one another in series directly or indirectly and be attached to generator further.Waste Heat Recovery System (WHRS) also comprises and is configured to receive from the condenser being in the working fluid of low pressure of the first expander, the second expander and the 3rd expander, to cool.In addition, Waste Heat Recovery System (WHRS) comprises and is connected to the pump of condenser for the liquid stream of the cooling and condensation that receive the working fluid of condenser, wherein, pump is configured for the working fluid of condensation to be pumped to the 3rd liquid stream entered via the second regenerator in the 3rd expander entering the second liquid stream in the second expander and working fluid via the first regenerator entering main liquid stream in the first heat recovery boiler, working fluid of working fluid.In addition, Waste Heat Recovery System (WHRS) comprises at least one second heat recovery boiler of discharging the second liquid stream of the first regenerator before entering the second expander being configured for heated working fluid.
According to embodiments of the invention, provide a kind of working fluid that utilizes in Rankine cycle to reclaim the method for used heat for generating.The main liquid that the method comprises pumping work fluid flows through at least one first heat recovery boiler, for heat is passed to working fluid from hot air flow or flue gas stream.The method also comprises makes the main liquid stream of the heating of working fluid expand by the first expander.In addition, the method comprises the second fluid-flow pump of working fluid to send and send by the 3rd expander by the second expander and by the 3rd fluid-flow pump of working fluid.Finally, the mixed flow that the method comprises the 3rd liquid stream making the main liquid stream of the working fluid of discharging the first expander, the second expander and the 3rd expander respectively, the second liquid stream of working fluid and working fluid by auxiliary precooler and condenser, for condensation working fluid mixed flow and further by pump.
Accompanying drawing explanation
More easily will understand these and other feature, aspect and advantage of the present invention when reading following detailed description with reference to accompanying drawing, in the accompanying drawings, identical symbol represents identical part in whole accompanying drawing, wherein:
Fig. 1 is the diagram diagram of the circulation of the Waste Heat Recovery System (WHRS) of restoring according to an embodiment of the invention.
Fig. 2 is the explanatory of the circulation shown in Fig. 1 represented by temperature-entropy diagram according to an embodiment of the invention.
Fig. 3 is the diagram diagram of the circulation of the Waste Heat Recovery System (WHRS) of recovery according to another embodiment of the invention.
Fig. 4 illustrates to be included according to the flow chart of embodiments of the invention for the illustrative steps in the method for recovery used heat that utilizes the working fluid in Rankine cycle and generate electricity.
Embodiment
When introducing the element of each embodiment of the present invention, article " ", " one ", " being somebody's turn to do " and " described " be intended to represent deposit within the element one or more.Term " comprises ", " comprising " and " having " is intended to represent comprising property and mean the other element that can exist except listed element.Any example of operating parameter does not get rid of other parameters of the disclosed embodiments.
Fig. 1 is the diagram diagram of the circulation of the Waste Heat Recovery System (WHRS) 10 of restoring according to an embodiment of the invention.Waste Heat Recovery System (WHRS) 10 comprises the Rankine cycle system 12 for making working fluid 14 circulate.In one embodiment, working fluid is supercritical carbon dioxide.Rankine cycle system 12 comprises at least one first heat recovery boiler 16 being configured to heat is passed to working fluid 14 from thermal source.Rankine cycle system 12 also comprises and is configured to receive from the first expander 18 of the working fluid 14 of the heating of at least one the first heat recovery boiler 16.In addition, Rankine cycle system 12 comprises the second expander 20 being attached to the first expander 18.In addition, Rankine cycle system 12 comprises the 3rd expander 22 being attached to the second expander 20, the first expander 18, second expander 20 and the 3rd expander 22 is coupled to one another in series directly or indirectly, and is attached to generator 24 further.The non-limiting example of expander 18,20,22 comprises combustion gas turbine.In one embodiment, each in the first expander 18 or the second expander 20 or the 3rd expander 22 can be attached to different generators independently.In another embodiment, the first expander 18, second expander 20 and the 3rd expander 22 can be connected by gear-box.Waste Heat Recovery System (WHRS) 10 also comprises condenser 26, and condenser 26 is configured to the working fluid 14 received at low pressure stage 6 place from the first expander 18, second expander 20 and the 3rd expander 22, to cool.In one embodiment, condenser 26 utilizes cold fluid flow 27 for cooling work fluid 14.In addition, Waste Heat Recovery System (WHRS) comprises the pump 28 being connected to condenser 26, for receiving cool stream and the condensate flow of the working fluid 14 of condenser 26.Pump 28 is configured for the 3rd liquid stream (being indicated by arrow 34) entered in the 3rd expander 22 entering the second liquid stream (being indicated by arrow 32) in the second expander 20 and working fluid 14 entering main liquid stream (being indicated by arrow 30) in the first heat recovery boiler 16, working fluid 14 working fluid 14 of condensation being pumped to working fluid 14.Because working fluid carbon dioxide has quite low critical temperature, the condensation as in normal Rankine cycle therefore can not be obtained under warm environmental conditions.It is to be appreciated that within the system, condenser 26 should be strictly limited to fully is condensed to liquid device by working fluid, and can be only by the device of supercritical state extremely fine and close for gas cooling.Similarly, pump 28 can not only pumping liquid, and can transmit and pressurize and leave the gas of condenser 26.
In one embodiment, first heat recovery boiler 16 comprises heat exchanger section, and heat exchanger section is configured to the main liquid stream (being indicated by arrow 30) entered in the first expander 18 heat being transferred to working fluid 14 from the first hot air flow or the first flue gas stream 17.As shown in Figure 1, Rankine cycle system 12 also comprises the second liquid stream 32 before entering in the second expander 20 that the first regenerator 36, first regenerator 36 is configured to heat to transfer to from the main liquid stream 30 of discharge first expander 18 of working fluid 14 working fluid 14.In one embodiment, the first regenerator 36 is middle temperature regenerators.In addition, Rankine cycle system 12 comprises the 3rd liquid stream 34 before entering in the 3rd expander 22 that the second regenerator 38, second regenerator 38 is configured to heat to transfer to from the second liquid stream 32 of discharge second expander 20 of working fluid working fluid 14.In one embodiment, the second regenerator 38 is cryogenic regenerators.
In addition, in one embodiment, Rankine cycle system 12 comprises auxiliary cooler 40, and auxiliary cooler 40 is for respectively from after the first expander 18, second expander 20 and the 3rd expander 22 are discharged, carry out pre-cooled at the mixed flow of the 3rd liquid stream 34 of the main liquid stream 30 of the working fluid 14 entered before condenser 26, the second liquid stream 32 of working fluid 14 and working fluid 14.In cogeneration (CHP) system, in auxiliary cooler 40, external treatment can be used to by the heat of pre-cooled acquisition.In one embodiment, auxiliary cooler 40 is by transferring heat to the main liquid stream 30 of working fluid 14 for carrying out preheating the heat utilized by the pre-cooled acquisition in Rankine cycle system 12 before entering heat recovery boiler 16.
As shown in Figure 1, waste heat recovery circulation 10 comprise by level 1,2, a major loop circulation 42 representing of 3H, 4H, 5H and 6.Waste Heat Recovery System (WHRS) 10 also comprises the second servo loop circulation 44 and tertiary circuit circulation 46 that are parallel to major loop circulation 42.It is overheated that this cascade of second servo loop circulation 44 and tertiary circuit circulation 46 utilizes the first regenerator and the second regenerator to effectively utilize in comfortable first expander 18 and the second expander 20 the extra residue of the carbon dioxide (working fluid 14) of the expansion after expanding.As shown in Figure 1, second servo loop circulation 44 by level 1,2,3I, 4I, 5I, 6 represent, and second servo loop circulation 46 by level 1,2,3L, 4L, 6 represent.
Fig. 2 is the schematic diagram of the circulation 10 shown in Fig. 1 represented by temperature-entropy diagram 50 according to an embodiment of the invention.Temperature (degree Celsius) illustrates in vertical Y-axis, and entropy (the every degree Kelvin of kilojoule) illustrates on horizontal X axle.Temperature-entropy diagram 50 clearly illustrates major loop circulation 42 (being indicated by level 1-2-3H-4H-5H-6-1), second servo loop circulation 44 (being indicated by level 1-2-3I-4I-5I-6-1) and tertiary circuit circulation 46 (being indicated by level 1-2-3L-4L-6-1).In major loop circulation 42, the liquid operation fluid 14 (shown in Figure 1) carrying out condenser 26 is pumped to ultrahigh pressure (such as, 300 bar) at level 2 place and is heated in heat recovery boiler 16 subsequently.After being heated to the temperature close to waste heat source, working fluid 14 produces power in the first expander 18 (shown in Figure 1).Working fluid 14 experiences inflation process, and during inflation process, the temperature and pressure of working fluid 14 declines in level 3H to 4H.In addition, discharge pressure working fluid 14 cooling in the first regenerator 36 (shown in Fig. 1) of the first expander 18, in the first regenerator 36, working fluid transfers heat to the second liquid stream 32 (as shown in Figure 1) of the working fluid 14 turned to from the main liquid stream 30 of working fluid 14 after the pump.This second liquid stream 32 also expand (level 3I to 4I) in the second expander 20 operated with lower temperature and in the second regenerator 38 the 3rd liquid stream 34 (shown in Figure 1) of heated working fluid in an identical manner again, at the second regenerator 38 place, temperature declines further from state 4I to 5I.In one embodiment, the second liquid stream 32 can be further heated in the other heat exchanger section in heat recovery boiler to may with first-class equally high higher temperature.3rd liquid stream 34 (shown in Fig. 1) of working fluid 14 also turns to from high pressure line (main liquid stream 30) after the pump, and expand from state 3L to 4L in the 3rd expander 22 after by the second liquid stream 32 (as shown in Figure 1) heating in the second regenerator 38, and under low pressure mix with main liquid stream 30 and the second liquid stream 32 at level 6 place subsequently.In one embodiment, the mixed flow of working fluid 14 can be further cooled in CHP cooler or by other liquid streams of heated working fluid 30,32 or 34 before cooled and condensation in regenerator.For condensation, carbon dioxide working fluid 14 is cooled to below the critical temperature of 30 DEG C, otherwise the dense gas of cooling to be formed in condenser 26 and to be supplied to feed pump.
Fig. 3 is the diagram diagram of the circulation of the Waste Heat Recovery System (WHRS) 70 of recovery according to another embodiment of the invention.Waste Heat Recovery System (WHRS) 70 is similar to Waste Heat Recovery System (WHRS) 10 as shown in Figure 1, except Waste Heat Recovery System (WHRS) 70 comprises the second heat recovery boiler 21.In this embodiment, second servo loop circulation 44 comprises the second heat recovery boiler 21, second heat recovery boiler 21 and utilizes the liquid stream of hot flue gases or fluid 19 with the temperature being first heated to equal the main liquid stream 30 of the working fluid in the first heat recovery boiler 16 in the first regenerator 36 by the second liquid stream 32 after heating further by working fluid 14.More high efficiency thermodynamic advantages at the lower peak value temperature can bringing Waste Heat Recovery System (WHRS) 70 to the heating of the second liquid stream 32 of working fluid 14 in the second heat recovery boiler 21.
Fig. 4 illustrates the flow chart being included in and utilizing the working fluid in Rankine cycle to reclaim the step in the method 100 of the used heat for generating electricity.In step 102 place, the main liquid that the method comprises pumping work fluid flows through at least one first heat recovery boiler, for heat is passed to working fluid from hot air flow or flue gas stream.In step 104 place, the method comprises makes the main liquid stream of the heating of working fluid expand by the first expander.Further, in step 106 place, the method comprises makes the second liquid stream of working fluid from main fluid diversion by the second expander.In step 108 place, the method comprises makes the 3rd liquid stream of working fluid from main fluid diversion by the 3rd expander.Finally, in step 110 place, the mixed flow that the method comprises the 3rd liquid stream making the main liquid stream of the working fluid of discharging the first expander, the second expander and the 3rd expander respectively, the second liquid stream of working fluid and working fluid through auxiliary precooler and condenser, for condensation working fluid mixed flow and the working fluid of condensation is guided to pump.
Advantageously, the present invention utilizes carbon dioxide as working fluid, and carbon dioxide can be heated to very high temperature, brings the high efficiency of Waste Heat Recovery System (WHRS).In addition, carbon dioxide is non-toxic and heat-staple working fluid.Utilize to use and there is the current system of the triple-expansion process of three expanders of cascade regenerator and method extracts peak power from the available used heat be directed to current system.In addition, in the second heat recovery boiler to the more high efficiency thermodynamic advantages that the heating of the second liquid stream of working fluid can bring at the lower peak value temperature of Waste Heat Recovery System (WHRS).
In addition, those skilled in the art will recognize that the interchangeability of each feature of different embodiment.Similarly, each illustrated method step and feature and other known equivalents of each this method and feature can be combined by those of ordinary skill in the art and be mated, the system other with principles of construction according to the present invention and technology.It will be appreciated, of course, that and may might not realize all these objects as above or advantage according to any specific embodiment.Therefore, such as, those skilled in the art will recognize that, the system illustrated herein and technology can be implemented in the mode of the advantage realized or optimize as instructed herein or one group of advantage or perform, and need not realize other objects as instructed or propose or advantage herein simultaneously.
Although show and described only some feature of the present invention herein, those skilled in the art will associate many modification and change.Be understandable that claims are intended to cover and fall into all these modification in true spirit of the present invention and change.
Claims (23)
1. a Waste Heat Recovery System (WHRS), comprising:
For making the Rankine cycle system of working fluid cycles, described Rankine cycle system comprises:
At least one first heat recovery boiler, at least one first heat recovery boiler described is configured to heat to be passed to described working fluid from thermal source;
First expander, described first expander is configured to the working fluid receiving heating from least one first heat recovery boiler described; And
Be attached to the second expander and the 3rd expander of at least one generator;
Condenser, described condenser configuration becomes to receive the working fluid being in low pressure from described first expander, described second expander and described 3rd expander, to cool; And
Pump, described pump is connected to described condenser for receiving cooling from the described working fluid of described condenser and condensate stream, wherein, described pump is configured for the 3rd liquid stream entered in described 3rd expander entering the second liquid stream in described second expander and described working fluid entering the main liquid stream in described first heat recovery boiler, the described working fluid working fluid of condensation being pumped to described working fluid.
2. Waste Heat Recovery System (WHRS) according to claim 1, is characterized in that, described working fluid is carbon dioxide.
3. Waste Heat Recovery System (WHRS) according to claim 1, it is characterized in that, described first heat recovery boiler comprises heat exchanger section, and described heat exchanger section is configured to the main liquid stream entering described first expander heat being passed to described working fluid from the first hot air flow or the first flue gas stream.
4. Waste Heat Recovery System (WHRS) according to claim 1, it is characterized in that, described Rankine cycle system comprises the first regenerator, and described first regenerator is configured to heat to spread from the main liquid of described first expander of the discharge of described working fluid the second liquid stream before entering in described second expander being handed to described working fluid.
5. Waste Heat Recovery System (WHRS) according to claim 4, is characterized in that, described first regenerator is middle temperature regenerator.
6. Waste Heat Recovery System (WHRS) according to claim 1, it is characterized in that, described Rankine cycle system comprises second heat recovery boiler, and described second heat recovery boiler is configured for the second liquid stream of discharging the first regenerator before entering described second expander heating described working fluid.
7. Waste Heat Recovery System (WHRS) according to claim 6, it is characterized in that, described second heat recovery boiler comprises heat exchanger section, and described heat exchanger section is configured to the second liquid stream of discharging described first regenerator before entering described second expander heat being passed to described working fluid from the second hot air flow or the second flue gas stream.
8. Waste Heat Recovery System (WHRS) according to claim 1, it is characterized in that, described Rankine cycle system comprises the second regenerator, and described second regenerator is configured to heat to spread from the second liquid of described second expander of the discharge of described working fluid the 3rd liquid stream before entering in described 3rd expander being handed to described working fluid.
9. Waste Heat Recovery System (WHRS) according to claim 5, is characterized in that, described second regenerator is cryogenic regenerator.
10. Waste Heat Recovery System (WHRS) according to claim 1, it is characterized in that, described Rankine cycle system comprises auxiliary cooler, described auxiliary cooler be used for respectively from described first expander, described second expander and described 3rd expander discharge after, carry out pre-cooled at the mixed flow entering the main liquid stream of the described working fluid before described condenser, the second liquid stream of described working fluid and the 3rd liquid stream of described working fluid.
11. Waste Heat Recovery System (WHRS) according to claim 1, it is characterized in that, described Rankine cycle system comprises cogeneration (CHP) system, and described cogeneration system is used for the pre-cooled heat being provided for external treatment of the mixed flow by the 3rd liquid stream to the main liquid stream of described working fluid, the second liquid stream of described working fluid and the described working fluid of discharging from described first expander, described second expander and described 3rd expander respectively.
12. Waste Heat Recovery System (WHRS) according to claim 11, it is characterized in that, described cogeneration (CHP) system construction becomes the main liquid stream by the heat trnasfer of pre-cooled acquisition extremely described working fluid, for preheating before entering described heat recovery boiler.
13. Waste Heat Recovery System (WHRS) according to claim 1, is characterized in that, described condenser cool described working fluid and described pump pressure contracting cooling gas but not pumping liquid.
14. 1 kinds of Waste Heat Recovery System (WHRS), comprising:
For making the Rankine cycle system of working fluid cycles, and described Rankine cycle system comprises:
At least one first heat recovery boiler, at least one first heat recovery boiler described is configured to heat to be passed to described working fluid from hot air flow or flue gas stream;
First expander, described first expander is configured to receive the working fluid from the heating of at least one the first heat recovery boiler described; And
Be attached to the second expander and the 3rd expander of at least one generator;
Condenser, described condenser configuration becomes to receive the working fluid being in low pressure from described first expander, described second expander and described 3rd expander, to cool;
Pump, described pump is connected to described condenser, for receiving the cooling liquid stream of the described working fluid from described condenser, wherein, described pump is configured for described working fluid to be pumped to the 3rd liquid stream entered via the second regenerator in described 3rd expander entering the second liquid stream in described second expander and described working fluid via the first regenerator entering the main liquid stream in described first heat recovery boiler, described working fluid of described working fluid; And
At least one second heat recovery boiler, at least one second heat recovery boiler described is configured for the second liquid stream of discharging described first regenerator before entering described second expander heating described working fluid.
15. Waste Heat Recovery System (WHRS) according to claim 14, is characterized in that, described working fluid is carbon dioxide.
16. Waste Heat Recovery System (WHRS) according to claim 14, it is characterized in that, at least one first heat recovery boiler described or at least one second heat recovery boiler described are configured to heat to be passed to the main liquid stream entering described first expander of described working fluid or the second liquid stream entering described second expander of described working fluid from hot air flow or flue gas stream.
17. Waste Heat Recovery System (WHRS) according to claim 14, it is characterized in that, described first regenerator is middle temperature regenerator, and described middle temperature regenerator is configured to heat to spread from the main liquid of described first expander of the discharge of described working fluid the second liquid stream before entering in described second expander being handed to described working fluid.
18. Waste Heat Recovery System (WHRS) according to claim 14, it is characterized in that, described second regenerator is cryogenic regenerator, and described cryogenic regenerator is configured to heat to spread from the second liquid of described second expander of the discharge of described working fluid the 3rd liquid stream before entering in described 3rd expander being handed to described working fluid.
19. Waste Heat Recovery System (WHRS) according to claim 14, it is characterized in that, described Rankine cycle system comprises auxiliary cooler or cogeneration (CHP) system, for respectively from described first expander, described second expander and described 3rd expander discharge after carrying out pre-cooled at the mixed flow entering the main liquid stream of the described working fluid before described condenser, the second liquid stream of described working fluid and the 3rd liquid stream of described working fluid.
20. 1 kinds utilize working fluid to reclaim the method for used heat for generating in Rankine cycle, and described method comprises:
The main liquid of working fluid described in pumping flows through at least one first heat recovery boiler, for heat is passed to described working fluid from hot air flow or flue gas stream;
Made the main liquid stream of the heating of described working fluid expand by the first expander;
Make the second liquid stream of described working fluid from described main fluid diversion by the second expander;
Make the 3rd liquid stream of described working fluid from described main fluid diversion by the 3rd expander; And
The mixed flow making to discharge respectively the 3rd liquid stream of the main liquid stream of described working fluid of described first expander, described second expander and described 3rd expander, the second liquid stream of described working fluid and described working fluid by auxiliary precooler and condenser, for working fluid described in condensation mixed flow and further described working fluid is guided to pump.
21. methods according to claim 20, is characterized in that, also comprise and make the second liquid of described working fluid flow through warm regenerator in first, for preheating before being transported in described second expander.
22. methods according to claim 20, is characterized in that, also comprise and the second liquid stream of discharge first regenerator was passed in the second heat recovery boiler before being transported in described second expander.
23. methods according to claim 21, is characterized in that, also comprise and make the 3rd liquid of described working fluid flow through the second cryogenic regenerator, for preheating before being transported in described 3rd expander by the 3rd liquid stream of described working fluid.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/538323 | 2012-06-29 | ||
| US13/538,323 US20140000261A1 (en) | 2012-06-29 | 2012-06-29 | Triple expansion waste heat recovery system and method |
| PCT/US2013/044923 WO2014004061A2 (en) | 2012-06-29 | 2013-06-10 | Triple expansion waste heat recovery system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104487662A true CN104487662A (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380034936.XA Pending CN104487662A (en) | 2012-06-29 | 2013-06-10 | Triple expansion waste heat recovery system and method |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20140000261A1 (en) |
| EP (1) | EP2882942A2 (en) |
| JP (1) | JP2015525846A (en) |
| KR (1) | KR20150036155A (en) |
| CN (1) | CN104487662A (en) |
| AU (1) | AU2013280987A1 (en) |
| BR (1) | BR112014031681A2 (en) |
| CA (1) | CA2876421A1 (en) |
| MX (1) | MX2014015418A (en) |
| RU (1) | RU2014150481A (en) |
| WO (1) | WO2014004061A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106437886A (en) * | 2016-09-06 | 2017-02-22 | 镇江新宇固体废物处置有限公司 | Waste heat power generation system |
| CN106523055A (en) * | 2016-12-30 | 2017-03-22 | 翁志远 | Environment-friendly and energy-saving power generation system and process and power generating station |
| CN106640242A (en) * | 2016-09-19 | 2017-05-10 | 清华大学 | Hypersonic flight vehicle engine heat recovery power generation system and control method thereof |
| CN111051654A (en) * | 2017-05-17 | 2020-04-21 | 康明斯公司 | Waste heat recovery system with heat exchanger |
| CN111699302A (en) * | 2017-12-18 | 2020-09-22 | 艾赛杰国际有限公司 | Method, apparatus and thermodynamic cycle for generating power from a variable temperature heat source |
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| WO2012027688A1 (en) * | 2010-08-26 | 2012-03-01 | Modine Manufacturing Company | Waste heat recovery system and method of operating the same |
| CN103443238A (en) * | 2011-03-25 | 2013-12-11 | 3M创新有限公司 | Fluorinated oxiranes as heat transfer fluids |
| KR101719234B1 (en) * | 2015-05-04 | 2017-03-23 | 두산중공업 주식회사 | Supercritical CO2 generation system |
| KR101650433B1 (en) * | 2015-05-18 | 2016-08-23 | 한국에너지기술연구원 | Vehicle waste heat recovery system |
| GB2542796A (en) | 2015-09-29 | 2017-04-05 | Highview Entpr Ltd | Improvements in heat recovery |
| WO2017219052A1 (en) * | 2016-06-20 | 2017-12-28 | CZADUL, Julia | Assembly for converting thermal energy into kinetic or electric energy |
| KR102061275B1 (en) | 2016-10-04 | 2019-12-31 | 두산중공업 주식회사 | Hybrid type supercritical CO2 power generation system |
| KR101947877B1 (en) * | 2016-11-24 | 2019-02-13 | 두산중공업 주식회사 | Supercritical CO2 generation system for parallel recuperative type |
| WO2018105841A1 (en) * | 2016-12-06 | 2018-06-14 | 두산중공업 주식회사 | Serial/recuperative supercritical carbon dioxide power generation system |
| WO2018131760A1 (en) * | 2017-01-16 | 2018-07-19 | 두산중공업 주식회사 | Complex supercritical carbon dioxide power generation system |
| EP3399246A1 (en) * | 2017-05-02 | 2018-11-07 | E.ON Sverige AB | District energy distributing system and method of providing mechanical work and heating heat transfer fluid of a district thermal energy circuit |
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| CN106640242A (en) * | 2016-09-19 | 2017-05-10 | 清华大学 | Hypersonic flight vehicle engine heat recovery power generation system and control method thereof |
| CN106523055A (en) * | 2016-12-30 | 2017-03-22 | 翁志远 | Environment-friendly and energy-saving power generation system and process and power generating station |
| CN111051654A (en) * | 2017-05-17 | 2020-04-21 | 康明斯公司 | Waste heat recovery system with heat exchanger |
| CN111699302A (en) * | 2017-12-18 | 2020-09-22 | 艾赛杰国际有限公司 | Method, apparatus and thermodynamic cycle for generating power from a variable temperature heat source |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2013280987A1 (en) | 2015-01-22 |
| JP2015525846A (en) | 2015-09-07 |
| MX2014015418A (en) | 2015-04-09 |
| US20140000261A1 (en) | 2014-01-02 |
| CA2876421A1 (en) | 2014-01-03 |
| WO2014004061A3 (en) | 2014-10-02 |
| EP2882942A2 (en) | 2015-06-17 |
| BR112014031681A2 (en) | 2017-06-27 |
| RU2014150481A (en) | 2016-08-20 |
| KR20150036155A (en) | 2015-04-07 |
| WO2014004061A2 (en) | 2014-01-03 |
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