CN110274218A - Method and power station from the power station production electric power run under the loading condiction of variation - Google Patents
Method and power station from the power station production electric power run under the loading condiction of variation Download PDFInfo
- Publication number
- CN110274218A CN110274218A CN201810205568.5A CN201810205568A CN110274218A CN 110274218 A CN110274218 A CN 110274218A CN 201810205568 A CN201810205568 A CN 201810205568A CN 110274218 A CN110274218 A CN 110274218A
- Authority
- CN
- China
- Prior art keywords
- steam
- boiler feedwater
- power station
- thermal energy
- tes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- 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
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/34—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines and returning condensate to boiler with main feed supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/31—Application in turbines in steam turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/60—Fluid transfer
- F05D2260/61—Removal of CO2
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/15027—Preventing emission of CO2 at the chimney outlet by using sea weeds filters or absorbers
-
- 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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Abstract
The present invention relates to power generation fields, and in particular to method and power station from the power station production electric power run under the loading condiction of variation.The power station includes boiler, steam turbine unit, the CO for being equipped with boiler feedwater pre-heating system2Trapping system and thermal energy storage system, wherein this method comprises: from the boiler feedwater pre-heating system extraction section boiler feedwater to store into TES system, and making the CO when power station is run under low loading conditions2The thermal energy that absorbent regeneration in trapping system uses from the boiler feedwater being stored in TES system partly or entirely by providing.The present invention come extracting energy from boiler feedwater with solving the problems, such as that thermal energy extracts by being limited, TES system is used to store thermal energy in the underrun stage and discharge thermal energy in the heavy-duty service stage to compensate the steam extraction of absorbent regeneration, steam circulation system can be preferably controlled and widen the dynamic range of operation.
Description
Technical field
The present invention relates to power generation fields, and in particular to from the power station production electricity run under the loading condiction of variation
The method of power and power station.
Background technique
Coal fired power station traps CO2Method first is that trapping CO from flue gas using absorbent2.For example, CO will be contained2Cigarette
Gas passes through CO2Washer and with can absorb CO2Absorbent contact so that CO in flue gas2It is absorbed and obtains CO2Contain
The reduced flue gas of amount, and resulting richness CO2Absorbent can pass through regeneration.
The CO based on absorbent2Trapping technique needs thermal energy to carry out absorbent regeneration.For Coal fired power station
Required thermal energy is 2-4GJ/ tons of CO2, the chemical property of many factors such as absorbent is depended in this way.
Steam circulation power station generally includes the steam turbine of at least two series operations.Wherein, high steam send supreme
Electric power is generated in pressure (HP) steam turbine, the exhaust steam of the HP turbine, which is then sent into low pressure (LP) steam turbine, generates electricity
Power.In some cases, steam circulation power station is also equipped with middle pressure (IP) steam turbine to utilize the useless steaming of HP turbine
Vapour simultaneously send the exhaust steam of generation into LP steam turbine.For with CO2It is existing for the power station of absorber systems
Method is then that the turbine as the one or more extracts steam to provide required thermal energy to meet absorbent regeneration.At present
It further include the mode that steam is extracted from intermediate pressure steam turbine in the pilot of some Coal fired power stations.
In power station using steam provide absorbent regeneration needed for thermal energy usually have there are two disadvantage, one is in this way
Operation will reduce and be used to generate the quantity of steam of electric power, to reduce the total electricity output in the power station, also reduce power generation
The net thermal efficiency stood.Second the disadvantage is that steam will in this way will from extraction from one or more extraction points of a steam turbine
The total mass flow rate for reducing extraction point turbine downstream, so that the output power of reduction turbine is changed, so that turbine is more
It is difficult to control.In addition, the running for maintaining steam turbine is the quantity of steam for needing minimum flow, this, which means that, takes extraction steam
Mode there are an actual power extraction limit.
In view of renewable energy appeals status in network system height, fossil fuel thermal power station is becoming with greater need for it is faced directly
The situation run under the load of change is included in a very long time underrun.Make the fortune in power station under the load of variation
Row is more difficult to control, and needs to extract steam to CO2The system of trapping system runs more difficult under the load of variation.It is negative in height
Under lotus operation, advantageously power station is generated more electric energy using more thermal energy rather than is used for elsewhere, so
And the demand to more thermal energy generated by fuel combustion, also imply that more CO2Generation, just need again more
Thermal energy is regenerated for from flue gas trapping CO2Absorbent.On the other hand, in underrun, power station only needs less
Thermal energy can meet electricity needs, usually export in this stage in electric power more lower than fixed power so as to cause power station
Operation.
There are many researchs at present to evaluate the CO run under the loading condiction of variation2The method that trapping system extracts value
Feasibility.One of method is, in heavy-duty service by rich CO2Absorbent stores, and in underrun into
Row regeneration, can make steam extraction be consistent with power generation demand curve in this way.However, this method needs additional space
Come the device and extraction system for filling absorbent, and absorbent being needed to store, therefore not preferably.Also, richness CO2Absorbent
Usually than poor CO2Absorbent is stored rich absorbent and will lead to absorbent and faster lost with higher degradation rate, from forming
Ben Genggao.
Another method includes only just trapping when discharge value (or supervision punishment) can maintain an equal level with operation trapping system
CO2.This method is all infeasible many times, such as Regulatory Organization requires absolute CO2Total release persistently keeps below certain
It is a horizontal or provided with absolute CO2Discharge the upper limit.
US9,617,915B2 is disclosed compensates absorption using thermal energy storage (TES) device in association circulating power generation system
Agent regeneration.Wherein, the association circulating power generation system of standard includes the gas turbine for being accompanied with steam turbine.It will combustion in this method
The thermal energy of gas-turbine exhaust gas generates steam in waste heat recovery steam generator, and for starting steam turbine.In US9,
In 617,915B2, the thermal energy for extracting the steam discharged to steam turbine is stored up when the power station is under low load mode
It deposits into TES system, and just discharges stored thermal energy when the power station is in high load capacity mode.By this way, TES
The thermal energy for making low load stage is gone to the high load capacity stage by system, is used with being supplied to the absorbent regeneration of trapping system, thus
More energy can be used for generating electric power rather than for CO when electricity needs be high2Trapping system.
In US9,617,915B2, TES system is directly to supplement thermal energy by the steam come out from steam turbine
, it means that it is the steam that HP turbine, IP turbine and LP turbine are discharged.Those skilled in the art should understand that
, this method only can be using the steam discharged in HP and IP turbine, because there is sufficiently high temperature to regenerate for they
In addition absorbent is without heating.The vapor (steam) temperature discharged from LP steam turbine too low can not regenerate in the case where in addition not heating is inhaled
Receive agent.Even steam extraction point is also limited by the thermal energy that the low-load operation stage extracts from HP turbine and IP turbine
The maintenance of the turbine operation in downstream.Reducing the thermal energy that mass flow will lead to extraction necessarily has upper limit value so that process
It is difficult to control, and reduces efficiency, or even cause the steam turbine for extracting point downstream to be stopped transport in extreme case.
Other prior arts include that (1) generates thermal energy individually to be used for absorbent regeneration (for example, by using Photospot solar
The boiler of power generation or supplement)；And (2) use the solar energy preboiler water supply of thermal energy storage to compensate electric power generation.This
The defect that a little methods have is that they need additional equipment and operating procedure, and thermal energy storage therein (TES) system is only
For conversion load and production in concentration solar generating (CSP).These solar thermal energy methods are limited to solar collector
Effect, and local solar day is limited to the effect of solar collector according to (usually in 200W/m2Left and right).It is in sunshine
200W/m2When, and assume light be converted to thermal energy efficiency be 100% under, at least 0.1km2Region need to generate the heat of 20MW
Energy.
Therefore, the demand of this field is to control the electric power generation in power station to meet peak power demands, while can fit
It should be because introducing CO2Trapping system controls parasitic power load caused by power plant flue gas discharge.In peak power demands, lead to
Normal CO2The parasitic load of trapping system will limit the maximum output in power station.In some cases, net electric power output will be less than needing
Seek electric power.It is required at this time for improving the ability of electric power output thus.In fact, extracting steam to system from steam turbine
Efficiency and controllability on all have adverse effect.Therefore, it is necessary to a kind of method for extracting and storing thermal energy be provided, to reduce
These adverse effects.It also needs to restore CO under heavy-duty service by using the thermal energy stored under underrun2, to change
It is apt to the entire CO in the power station run under the load of variation2The economic benefit of trapping system.More specifically, selection is needed in low electric power
The underrun stage storage thermal energy asked will suffer from the limitation of thermal energy extracted amount and quality (temperature), the limitation will directly by
The influence of the mode of energy is extracted from the steam of steam circulation.
Summary of the invention
The purpose of the present invention is to provide a kind of novel from the power station run under the loading condiction of variation production electricity
The method of power and power station, wherein this method can improve the general output in power station and reduce operation CO2Trapping system at
This.
To achieve the goals above, one aspect of the present invention is provided produces from the power station run under the loading condiction of variation
The method of electric power, the power station include boiler, steam turbine unit, the CO for being equipped with boiler feedwater pre-heating system2Trapping
System and thermal energy storage (TES) system,
Wherein, this method comprises: when the power station is run under low loading conditions, from the boiler feedwater pre-heating system
Extraction section boiler feedwater makes the CO to store into TES system2The heat that absorbent regeneration in trapping system uses
It can be partly or entirely by being provided from the boiler feedwater being stored in the TES system.
Second aspect of the present invention provides a kind of with CO2The power station of trapping system, the power station include: boiler, are equipped with
Steam turbine unit, the CO of boiler feedwater pre-heating system2Trapping system and thermal energy storage (TES) system；
Wherein, TES system and the boiler feedwater pre-heating system and CO2Trapping system is connected, so that the power station
When running under low loading conditions, from the boiler feedwater pre-heating system extraction section boiler feedwater to store into TES system,
And make the CO2The thermal energy that absorbent regeneration in trapping system uses partly or entirely is stored in the TES system by coming from
Boiler feedwater in system provides.
The present invention come extracting energy from boiler feedwater with solving the problems, such as that thermal energy extracts by being limited.In underrun
The stage thermal energy of storage will be used to restore CO in the heavy-duty service stage2.Use thermal energy storage system in underrun rank
Section storage thermal energy simultaneously discharges thermal energy in the heavy-duty service stage to compensate the steam extraction of absorbent regeneration, and possessed advantage exists
In can preferably control steam circulation system and widen the dynamic range of operation.Institute's heat accumulation energy can be partially or fully
The steam extracted instead of the high load capacity stage for absorbent regeneration.Particularly, method by the invention will more effectively
Thermal energy is extracted in the low electricity needs stage, and is always exported for improving the power station in high electricity needs stage.
Detailed description of the invention
Fig. 1 schematically illustrates according to the present invention from the power station run under the loading condiction of variation generation electric power
Method a kind of preferred embodiment.
Fig. 2, which is schematically illustrated, generates electricity from the power station run under the loading condiction of variation according to prior art
A kind of embodiment of the method for power.
Description of symbols
1: boiler；2:HP steam turbine；3:IP steam turbine；4:LP steam turbine；5: coagulator；6: the first is pre-
Hot device；7: degasser；8: the second preheaters；9:CO2Absorber；10:CO2Regenerator；11: the first storage tanks；12: heat exchanger；
13: the second storage tanks；
101: raw water；102: carbonaceous fuel；103:HP steam；104:IP steam I；105:IP steam II；106:LP steam；
107: the two LP steam；108: the one LP steam；109: exhaust steam；113: flue gas；114: poor CO2Flue gas；115: rich CO2It absorbs
Agent；116: desorption CO2；117: poor CO2Absorbent；119: the first logistics；120: third―party logistics；121: the four logistics；122: condensation
Logistics；123: the second logistics；124: the five logistics；118: the six logistics.
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
One aspect of the present invention provides the method from the power station production electric power run under the loading condiction of variation, the hair
Power station includes boiler, steam turbine unit, the CO for being equipped with boiler feedwater pre-heating system2Trapping system and thermal energy storage
(TES) system,
Wherein, this method comprises: when the power station is run under low loading conditions, from the boiler feedwater pre-heating system
Extraction section boiler feedwater makes the CO to store into TES system2The heat that absorbent regeneration in trapping system uses
It can be partly or entirely by being provided from the boiler feedwater being stored in the TES system.
According to the present invention, the method for generating electric power can be adapted for it is various include boiler, to be equipped with boiler feedwater pre-
The steam turbine unit and CO of hot systems2Any power station of trapping system, so that CO will be compensated by increasing the TES system matched2Trapping
A large amount of thermal energy needed for system are especially during heavy-duty service condition.Such power station can be using carbonaceous fuel example
Such as the power station of coal or natural gas, the specific example in the power station is coal-fired rankine cycle or gas theory.
According to the present invention, method of the invention can extract heat by extracting boiler feedwater from the pre- hot system of boiler water
Can, and use TES system to store and discharge the thermal energy and extracted for absorbent regeneration to the steam of steam circulation system with compensating.
The device that the steam turbine unit is adapted for the with pressure and high-temperature steam generated using boiler to generate electricity.For this purpose, the steaming
Steam turbine unit is the key device in power station, and which determine the outputs of the electric power in entire power station.In general, the steamturbine
Machine may include high pressure (HP) steam turbine, middle pressure (IP) steam turbine, low pressure (LP) steam turbine or they
Any combination, in order to improve the entire electric power output in power station, it is preferable that the steam turbine unit includes that high pressure (HP) steams
Steam turbine, middle pressure (IP) steam turbine and low pressure (LP) steam turbine.
In general, being used to the steam extracted from IP/LP intersection in CO2Absorbent regeneration in trapping system.Because of this hair
Bright method by during high-load condition is run using at least partly by thermal energy that TES system provides come absorbent regeneration, that
During the heavy-duty service from steam turbine unit extract the LP steam for absorbent regeneration will be reduced or
Person exempts.And during low load condition operation, it should be by the limited amount steam from IP/LP intersection from the steam whirlpool
Turbine unit is extracted in CO2Trapping system absorbent regeneration.Preferably, in this case, under low loading conditions
LP steam is extracted from IP/LP intersection as the CO2Absorbent regeneration in trapping system provides thermal energy, and in high load capacity item
For in the CO under part2The thermal energy of absorbent regeneration includes the thermal energy being stored in TES system in trapping system.
As shown in Figure 1, the HP steam turbine 2, IP steam turbine 3 and LP steam turbine 4 are usually to connect
Connection, if all steam turbines can be run under basic quota constant volume, total output electricity in power station
It will be very high.And steam is extracted from system and exports the electric power for reducing whole system, and there are also reduce whole system
The thermal efficiency.According to the change of electricity needs, and change steam extraction amount, will lead to system and be difficult to control.Therefore, needed for this field
Be that steam turbine unit can smoothly be run, and being capable of basic quota constant volume work in the high electricity needs stage.For
Realize that the purpose, method of the invention use TES system and store thermal energy in low electricity needs stage, and in high electricity needs
Stage discharges thermal energy to compensate absorbent regeneration so that more LP steam can be used in generating in LP steam turbine
Electric power, thus steam turbine can control under almost quota constant volume and run to generate more electric power.
In one embodiment of the invention, the steam turbine unit include high pressure (HP) steam turbine,
In the case where middle pressure (IP) steam turbine and low pressure (LP) steam turbine, as shown in Figure 1, it is preferable that side of the invention
Method will include:
(1-1) send the HP steam 103 that the boiler generates into HP steam turbine 2 to generate in electric power and acquisition and press
(IP) steam；
(1-2) send the IP steam into IP steam turbine 3 to generate electric power and obtain low pressure (LP) steam 106；
(1-3) send the LP steam 106 of part into LP steam turbine 4 to generate electric power as the first LP steam 108
And obtain exhaust steam 109；
(1-4) send the LP steam 106 of remainder to the CO as the 2nd LP steam 1072It is carried out in trapping system
Thermal energy exchange is with absorbent regeneration and obtains condensed water D；
Wherein, exhaust steam 109 and condensed water D will be sent to the boiler water pre-heating system to heat and be recycled to the boiler
In.
It should be understood that in the present invention, needing less in the heavy-duty service stage or hardly needing LP steaming
Vapour is used for absorbent regeneration, and in the underrun stage, the amount of the 2nd LP steam 107 will be relatively higher or use to be conventional
Amount.
Preferably, the high-load condition refer to power station need steam turbine unit higher than 75% it is specified
The condition run under capacity, the low load condition refer to power station need steam turbine unit in 75% volume below
The condition run under constant volume.
The effect of in order to improve IP steam turbine 3, it is preferable that the IP steam, which will be defined as IP steam I104, to be back to
Boiler obtains the relatively higher IP steam of temperature and is defined as IP steam II105 to reheat, and then the IP steam II105 will
It send into IP steam turbine 3 and generates electricity.
According to the present invention, the HP steam turbine, IP steam turbine and LP steam turbine can be normal for this field
The known steam turbine of rule, in general, the HP steam turbine refers to the steam that can be suitable for pressure 23MPa or more
Turbine, the IP steam turbine refer to the turbine that can be suitable for the steam that pressure is 5-6MPa, the LP steam
Turbine refers to the turbine that can be suitable for pressure 1.2MPa steam below.
According to the present invention, the boiler feedwater pre-heating system for being assemblied in the steam turbine unit is for Preheated steam
The boiler feedwater of preheating is simultaneously recycled in the boiler to generate steam again by the condensed water and exhaust steam of turbine generation
System, it is preferable that the boiler feedwater pre-heating system includes coagulator 5, the first preheater 6, degasser 7 and the second preheater 8.
It include high pressure (HP) steam turbine, middle pressure (IP) steam turbine and low pressure (LP) steam whirlpool in the steam turbine unit
In the case where turbine, as shown in Figure 1, wherein the condensed water D and exhaust steam 109 are mixed in the coagulator 5,
To obtain boiler feedwater I；
The boiler feedwater I (will can be a series of concatenated low temperature boiler feedwater preheatings in first preheater 6
Device) in from LP steam turbine 4 steam carry out heat exchange, to obtain boiler feedwater II；
The boiler feedwater II will carry out heat exchange with the steam from IP steam turbine 3 in the degasser 7, and
Obtain boiler feedwater III；
The boiler feedwater III (will can be a series of concatenated high-temperature boiler feed-water preheatings in second preheater 8
Device) in from the steam of IP steam turbine 3 and HP steam turbine 2 carry out heat exchange, and obtain the boiler that is fully warmed-up
Water supply IV；
And the boiler feedwater IV is sent into the boiler to produce steam.
The present invention is not particularly limited coagulator 5, the first preheater 6, degasser 7 and the second preheater 8, they
It can be coagulator, preheater and the degasser of the composition boiler feedwater pre-heating system that this field routinely uses, wherein described the
One preheater 6 and the second preheater 8 will carry out boiler feedwater using the steam extracted from HP, IP and LP steam turbine pre-
Heat.
Preferably, by be drawn from second preheater 8 and through with after the boiler feedwater III heat exchange steam with
The steam for being drawn from the IP steam turbine 3 sent together into the degasser 7 and in the degasser 7 with boiler feedwater
II carries out heat exchange, to obtain boiler feedwater III.
Preferably, by be drawn from the degasser 7 and through with the steam of the boiler feedwater II heat exchange be drawn from
The steam of the LP steam turbine 4 sent together into first preheater 6 and in first preheater 6 with the pot
Furnace water supply I carries out heat exchange, to obtain boiler feedwater II.
Preferably, by be drawn from first preheater 6 and through with the steam after the boiler feedwater I heat exchange send to
It is mixed in the coagulator 5 with the condensed water D and exhaust steam 109 to obtain boiler feedwater I, so that coagulator 5
In water conservancy preheated with the steam from the first preheater 6.
According to the present invention, the power station will be run under dynamic loading condiction, so that TES system can be in high load capacity
Condition operation is lower to compensate CO using the thermal energy stored during low load condition operation2The heat of absorbent regeneration in trapping system
Can, however when the power station is run under low loading conditions, which can also extract pot with boiler feedwater pre-heating system
Furnace water supply and be CO2Absorbent regeneration provides thermal energy in trapping system, only during this period, is drawn from boiler feedwater pre-heating system
And send to the amount of the boiler feedwater of TES system to come than what is extracted from TES system for CO2The water of trapping system offer thermal energy
Want high.
In the case where not limited by any theory, it is preferable that when the power station is run under high-load condition, TES system
In more heat sources will be used for for CO2Absorbent regeneration provides thermal energy in trapping system, to more small part or not have to LP
Steam is used for absorbent regeneration；And when the power station is run under low loading conditions, more boiler feedwaters will be sent to
To store thermal energy in TES system, and more small part or do not use the heat source in TES system that will be used for as CO2In trapping system again
Raw absorbent provides thermal energy.It means that the TES system will store more during power station is in low load condition operation
More boiler feedwaters, while the boiler feedwater of the storage will be absorbent regeneration during power station is in high-load condition operation
Thermal energy is provided.
According to the present invention, the TES can be constructed in an appropriate manner to obtain above-mentioned function, it is preferable that institute as shown in figure 1
Show, the TES system includes the first storage tank 11, heat exchanger 12 and the second storage tank 13.In this case, in the low load condition phase
Between, it send part boiler feedwater as heat source into first storage tank 11 to store, and during high-load condition, it will be described
Part of heat energy in first storage tank 11 as the first logistics 119 send into the heat exchanger 12 with from second storage tank
13 third―party logistics 120 carry out heat exchange, wherein first logistics 119 will form the second object after exchanging release thermal energy
Stream 123, and the third―party logistics 120 will generate steam stream (i.e. the 4th logistics 121) after heat exchange absorbs thermal energy；
4th logistics 121 will be sent to CO2To provide thermal energy for absorbent regeneration to form condensate in trapping system
It (i.e. condensate flow 122) and is back in second storage tank 13；Second logistics 123 will be back to first storage tank 11
In.It should be noted that the temperature of first logistics 119 should be above the temperature of the third―party logistics 120 and the second logistics 123
Degree, the temperature of the 4th logistics 121 should be above the temperature of condensate flow 122.The third―party logistics 120, the 4th logistics 121
It can be formed by heat boiler water supply with condensate flow 122.
According to the present invention, in order to save water and improve reuse boiler feedwater mass flow, it is preferable that by described
Part water in one storage tank 11 is sent into the coagulator 5 and the condensed water D and the exhaust steam as the 5th logistics 124
109 mixing are to obtain the boiler feedwater I.That is, boiler feedwater I of the invention can be by being drawn from first preheater
6 and mixed through the steam after the boiler feedwater I heat exchange with the condensed water D, exhaust steam 109 and the 5th logistics 124
And it obtains.
According to the present invention, when first storage tank 11 returns to the 5th logistics 124 to form boiler feedwater I, it is preferable that this
The method of invention includes mixing the 5th logistics 124 to obtain in the coagulator 5 with condensed water D and exhaust steam 109
Boiler feedwater I.Wherein, the condensed water D and exhaust steam 109 can be fed directly to be combined in coagulator 5, or such as Fig. 1
Shown in, first by exhaust steam 109 in conjunction with the condensed water D after, then combining logistics send into coagulator 5 and the 5th logistics
124 mixing.
According to the present invention, as described above, the TES system can be CO2The absorbent regeneration of trapping system provides heat
It can, wherein be based under high-load condition in the CO2The total heat energy of absorbent regeneration in trapping system, by the TES
The thermal energy ratio for absorbent regeneration that system provides is at least 25%, preferably at least 50%, for example, 50-100%,
60-80%, 70-90%, 85-100%.Wherein, the boiler feedwater can be from any position of the boiler feedwater pre-heating system
Point is extracted to send into TES system, if the boiler feedwater extracted heat enough extremely generates the saturated vapor of 60psia, such as
Can by the pipeline of part boiler feedwater, boiler feedwater III in degasser 7 part boiler feedwater, in the second preheater 8
Part boiler feedwater, boiler feedwater IV pipeline in part boiler feedwater or any combination of them from the boiler
Feed-water preheating system is extracted and is sent into TES system as heat source, it is preferable that the total amount based on the boiler feedwater is (logical
Often refer to boiler feedwater IV), the amount of boiler feedwater that is being drawn from the boiler feedwater pre-heating system and sending into TES system
For 1-50vol%, preferably 10-40vol%.
Preferably, the boiler feedwater pre-heating system includes degasser (as described above), and this method includes from described
Extraction section boiler feedwater is into the TES system to save as heat source in degasser.It is highly preferred that being based on the degasser
In boiler feedwater total amount, be 1-90 weight from the amount of the boiler feedwater that the degasser extracts and send into the TES system
Measure %, preferably 10-85 weight %.
According to the present invention, the CO2Trapping system generally includes CO2Absorber 9 and CO2Regenerator 10, as shown in Figure 1,
In this case, method of the invention will the following steps are included:
Flue gas 113 from boiler 1 is sent to the CO containing absorbent2The CO in flue gas 113 is absorbed in absorber 92And
Obtain poor CO2Flue gas 114 and richness CO2Absorbent 115；
By the richness CO2Absorbent 115 is sent to the CO2With absorbent regeneration and poor CO is obtained in regenerator 102Absorbent
117 are recycled to the CO2In absorber 9 and desorption CO2116。
In these cases, the flue gas 113 is typically by 102 next life of combusting carbonaceous fuel in the boiler 1
It produces HP steam and generates, and the flue gas contains a large amount of CO2With other possible exhaust gas.In the CO2Suction in absorber 9
Receiving agent can be suitable for absorbing CO for this field is any2Any absorbent, preferably solvent namely the CO2Trapping system uses
Solvent absorbs CO as absorbent2.The solvent can choose one of aminated compounds or a variety of, for example, monoethanol
Amine (MEA), diethanol amine (DEA), triethanolamine (TEA), diisopropanolamine (DIPA) (DIPA), diglycolamine (DGA), N- methyl ethanol
Amine (MDEA), amido silicon oil, piperazine (PZ) or their any mixing.
In these cases, the poor CO2Flue gas 114 will be from the CO2The discharge of absorber 9 and the richness CO2It absorbs
Agent 115 will be sent to the CO2It is regenerated in regenerator 10.As described above, it is supplied to the CO2The thermal energy of trapping system
It will be provided to the CO substantially2With absorbent regeneration in regenerator 10, thus the pipeline of TES system and the 2nd LP steam 107
It will be with the CO2Regenerator 10 is connected to provide thermal energy for it.Wherein, after the completion of absorbent regeneration, CO is desorbed2116 will be direct
From the CO2Regenerator 10 discharges, and the richness CO2Absorbent 115 will revert to poor CO2It absorbent 117 and is recycled to described
CO2Absorber 9 is cyclically for absorbing the CO in flue gas2。
Second aspect of the present invention provides a kind of with CO2The power station of trapping system, the power station include: boiler, are equipped with
Steam turbine unit, the CO of boiler feedwater pre-heating system2Trapping system and thermal energy storage (TES) system；
Wherein, TES system and the boiler feedwater pre-heating system and CO2Trapping system is connected, so that the power station
When running under low loading conditions, from the boiler feedwater pre-heating system extraction section boiler feedwater to store into TES system,
And make the CO2The thermal energy that absorbent regeneration in trapping system uses partly or entirely is stored in the TES system by coming from
Boiler feedwater in system provides.
According to the present invention, the power station will be suitable for the invention the above method, related above for method thus
Description will by reference be incorporated at this power station description in.
As described above, in a preferred embodiment of the invention, the steam turbine unit includes high pressure
(HP) steam turbine, middle pressure (IP) steam turbine and low pressure (LP) steam turbine, and IP/LP intersection with it is described
CO2Trapping system is connected, so that extracting LP steam from the IP/LP intersection under low loading conditions as the CO2Trapping system
Absorbent regeneration in system provides thermal energy.
Wherein, the HP steam turbine 2 and is obtained for expanding the HP steam 103 generated by boiler to generate electric power
Obtain middle pressure steam IP steam；
The IP steam turbine 3 is for expanding IP steam to generate electric power and obtain the LP steam 106 of low pressure；
The LP steam turbine 4 is as the first LP steam 108 for dilation LP steam 106 to generate electric power simultaneously
Obtain exhaust steam 109；
The CO2Trapping system is connect using the LP steam 106 for passing through remainder with the steam turbine unit
The thermal energy for being defined as the heat exchange offer of the 2nd LP steam 107 carrys out absorbent regeneration, and will form condensed water D after the heat exchange；
The pipeline of exhaust steam 109 will be connected to the pipeline of the condensed water D in boiler feedwater pre-heating system, by they
It is heated and is recycled in the boiler 1 in the boiler feedwater pre-heating system.
In order to improve the efficiency of the IP steam turbine 3, it is preferable that IP steam is defined as IP steam I104's
Pipeline will be connected to the steam inlet of boiler 1 so that IP steam I104 comes back in boiler 1 and heats again, thus will obtain
There must be the IP steam of related higher temperature and pressure to be defined as IP steam II105, the pipeline of the IP steam II105 will be with
The steam inlet connection of IP steam turbine 3 is for generating electric power.
As described above, the boiler feedwater pre-heating system preferably includes coagulator 5, the first preheater 6,7 and of degasser
Second preheater 8, as shown in Figure 1.Wherein, the coagulator 5 is for being mixed and condensed in water D and exhaust steam 109 to obtain pot
Furnace water supply I's；
First preheater 6 be for by with from LP steam turbine 4 steam carry out heat exchange and heating kettle
Furnace water supply I is to obtain boiler feedwater II's；
The degasser 7 be for by with from IP steam turbine 3 steam carry out heat exchange and heating boiler to
Water II is to obtain boiler feedwater III's；
Second preheater 8 is for by carrying out with from the steam of IP steam turbine 3 and HP steam turbine 2
Heat exchange and heating boiler feed water III are to obtain boiler feedwater IV's；
The pipeline of the boiler feedwater IV will be connected to be recycled to boiler feedwater IV and be used to generate steaming in boiler 1 with boiler
Vapour.In this case, the pipeline of the pipeline of condensed water D and exhaust steam 109 will be connected to the entrance of the coagulator 5, described solidifying
The water out of knot device 5 will be connected to the water inlet of the first preheater 6, and the water out of first preheater 6 will be with the degassing
The water inlet of device 7 is connected to, and the water out of the degasser 7 will be connected to the water inlet of second preheater 8, and described second is pre-
The water out of hot device 8 will be connected to the water inlet of the boiler 1.
As described above, it is preferable that the boiler feedwater pre-heating system further includes connection degasser 7 and the second preheater 8
Pipeline so that be drawn from second preheater 8 and through with the steam and pumping after the boiler feedwater III heat exchange
The steam for being derived from the IP steam turbine 3 sent together into the degasser 7 and in the degasser 7 with boiler feedwater II
Heat exchange is carried out, to obtain boiler feedwater III.
As described above, it is preferable that the boiler feedwater pre-heating system further includes the first preheater 6 of connection and degasser 7
Pipeline so that be drawn from the degasser 7 and through with the steam of the boiler feedwater II heat exchange and be drawn from described
The steam of LP steam turbine 4 sent together into first preheater 6 and in first preheater 6 with the boiler to
Water I carries out heat exchange, to obtain boiler feedwater II.
As described above, it is preferable that the boiler feedwater pre-heating system further includes connection first preheater 6 and condensation
The pipeline of device 5 so that be drawn from first preheater 6 and through with the steam after the boiler feedwater I heat exchange send to
It is mixed in the coagulator 5 with the condensed water D and exhaust steam 109 to obtain boiler feedwater I.
In accordance with the present invention it is preferred that as shown in Figure 1, the TES system includes the first storage tank 11,12 and of heat exchanger
Second storage tank 13.In this case, first storage tank 11 is connected to the boiler feedwater pre-heating system, so as in underload item
During part, the part boiler feedwater extracted from the boiler feedwater pre-heating system is stored as heat source；
The heat exchanger 12 is used to make the part of heat energy conduct in first storage tank 11 during high-load condition
First logistics 119 carries out heat exchange wherein with the third―party logistics 120 from second storage tank 13, and first logistics 119 will
The second logistics 123 is formed after exchanging release thermal energy, and the third―party logistics 120 will generate after heat exchange absorbs thermal energy
4th logistics 121；
The pipeline of 4th logistics 121 will be with the CO2Trapping system connects to be absorbent during high-load condition
Regeneration provides thermal energy, and is formed simultaneously condensate flow 122 and is back in second storage tank 13；
The pipeline of second logistics 123 is connected to that the second logistics 123 is made to be back to first storage tank 11
In one storage tank 11.
According to the present invention, in order to save water and improve reuse boiler feedwater mass flow, it is preferable that from first storage
The pipeline that the water that tank 11 flows out is defined as the 5th logistics 124 is connected to so that the 5th logistics 124 with the water inlet of the coagulator 5
It is mixed with condensed water D and exhaust steam 109.Wherein, the pipeline of the pipeline of condensed water D and exhaust steam 109 can directly be coagulated with described
The connection of device 5 is tied to combine wherein, or as shown in Figure 1, the pipeline of exhaust steam 109 be first connected to the pipeline of condensed water D with
The combination water of exhaust steam 109 and condensed water D is obtained, then this combines the pipeline of water to be connected to again with the water inlet of coagulator 5.
According to the present invention, according to the present invention, in order to save water and improve reuse boiler feedwater mass flow, preferably
Ground, degasser 7, the pipeline of boiler feedwater III, the second preheater 8, boiler feedwater IV pipeline or any combination of them.
Preferably, the boiler feedwater pre-heating system includes degasser, and the degasser is connected to the TES system,
So that the TES system is drawn from the part boiler feedwater of the degasser filled with part.Specifically, the boiler feedwater
Pre-heating system include be connected to the pipeline of TES system and degasser 7 in low load stage only by the part boiler in degasser 7
Water supply, which is defined as the 6th logistics 118, to be sent into TES system and stores thermal energy as heat source.
According to the present invention, the CO2Trapping system generally includes CO2Absorber 9 and CO2Regenerator 10, as shown in Figure 1,
In this case:
The CO2Absorber 9: for absorbing the CO in the flue gas 113 from boiler 12And obtain poor CO2Flue gas 114 and richness
CO2Absorbent 115；
The richness CO2The pipeline of absorbent 115 and the CO2The absorbent entrance of regenerator 10 is connected to so as to rich CO2It absorbs
Agent 115 enters the CO2It is regenerated in regenerator 10 and obtains poor CO2Absorbent 117 and desorption CO2116；
The poor CO2The pipeline of absorbent 117 and the CO2The absorbent entrance connection of absorber 9 is poor to recycle
CO2Absorbent 117.
Wherein, the CO2Absorber 9 is provided with the poor CO of discharge2The outlet of flue gas 114, the CO2Regenerator 10 is provided with
Discharge desorption CO2116 outlet.
As described above, it is supplied to the CO2The thermal energy of trapping system will be provided to the CO substantially2In regenerator 10
With absorbent regeneration, so that the pipeline of TES system and the 2nd LP steam 107 will be with the CO2The connection of regenerator 10 thinks that it is mentioned
For thermal energy.
The present invention will be described in detail by way of examples below.
In following example:
Power station as shown in the figure includes: boiler 1, steam turbine unit, the CO for being equipped with boiler feedwater pre-heating system2
Trapping system and TES system；Wherein, the steam turbine unit includes HP steam turbine 2, IP steam turbine 3 and LP
Steam turbine 4；The boiler feedwater pre-heating system includes coagulator 5, the first preheater 6, degasser 7 and the second preheater 8；
The TES system includes the first storage tank 11, heat exchanger 12 and the second storage tank 13；The CO2Trapping system includes containing solvent
MEA is as CO2The CO of absorbent2Absorber 9 and CO2Regenerator 10；The connection relationships of these devices is as shown in Figure 1.
Power station shown in Fig. 2 is same as power station shown in FIG. 1 to assemble, and only power station shown in Fig. 2 does not include
TES system.
Embodiment 1
The present embodiment is for illustrating method and power station of the invention.
Using power station shown in FIG. 1, specifically, carbonaceous fuel 102 (fine coal) is sent and is burnt and is produced into boiler 1
Heat energy and flue gas 113, while raw water 101 (being made of boiler feedwater IV) being sent into boiler 1 and is burnt using carbonaceous fuel 102
The thermal energy of generation is to generate HP steam 103；
The HP steam 103 is sent into HP steam turbine 2 to generate electric power and obtain IP steam I104, by the IP steam
I104, which is back to, heats again and obtains IP steam II105 in boiler 1；
IP steam II105 is sent into IP steam turbine 3 to generate electric power and obtain LP steam 106；
It the LP steam 106 of part is defined as the first LP steam 108 send into LP steam turbine 4 to generate electric power and to obtain
Exhaust steam 109；The LP steam 106 of remainder is defined as the 2nd LP steam 107 to send to CO2In regenerator 10 with rich CO2It absorbs
Agent carries out heat exchange and forms condensed water D；
Exhaust steam 109 is first combined with condensed water D, combining logistics is sent into coagulator 5；It will be flowed out in coagulator 5
Boiler feedwater be defined as boiler feedwater I send into the first preheater 6 with be drawn from LP steam turbine 4 steam carry out heat
It exchanges and is heated；By the boiler feedwater flowed out from the first preheater 6 be defined as boiler feedwater II send into degasser 7 with pumping
The steam for being derived from IP steam turbine 3 carries out heat exchange and is heated and is de-gassed wherein；By what is flowed out from degasser 7
Boiler feedwater be defined as boiler feedwater III send into the second preheater 8 with be drawn from IP steam turbine 3 and HP steamturbine
The steam of machine 2 carries out heat exchange and is heated；The boiler feedwater flowed out from the second preheater 8 is defined as boiler feedwater IV to follow
Ring is back in boiler 1 for use as raw water 101；
Wherein, by be drawn from second preheater 8 and through with the steam and pumping after the boiler feedwater III heat exchange
The steam for being derived from the IP steam turbine 3 sent together into the degasser 7 and in the degasser 7 with boiler feedwater II
Heat exchange is carried out, to obtain boiler feedwater III；By be drawn from the degasser 7 and through and the boiler feedwater II heat exchange
Steam sent together with the steam for being drawn from the LP steam turbine 4 into first preheater 6 and pre- described first
Heat exchange is carried out with the boiler feedwater I in hot device 6, to obtain boiler feedwater II；By be drawn from first preheater 6 and
It is sent into the coagulator 5 and the condensed water D and the progress of exhaust steam 109 through with the steam after the boiler feedwater I heat exchange
Mixing is to obtain boiler feedwater I.
During underrun, the part boiler feedwater in degasser 7 is defined as the 6th logistics 118 and is sent to the first storage
It carries out saving as heat source in tank 11；
During heavy-duty service, the part water in the first storage tank 11 is defined as the first logistics 119 and is sent to heat exchanger
To carry out heat exchange with the third―party logistics 120 from the second storage tank 13 in 12；And the first logistics 119 will exchange release heat
Can after form the second logistics 123 and be back in the first storage tank 11, the third―party logistics 120 will generate after heat exchange absorbs thermal energy
4th logistics 121；4th logistics 121 is sent to CO2In regenerator 10 with rich CO2Absorbent carries out heat exchange and forms condensate
Stream 122 is back in the second storage tank 13；Wherein the part water in the first storage tank 11, which is defined as the 5th logistics 124, will send to coagulator
To participate in forming boiler feedwater I in 5；
Flue gas 113 will be sent to the CO containing solvent MEA2The CO in flue gas 113 is absorbed in absorber 92And obtain poor CO2
Flue gas 114 is (from CO2Absorber 9 discharges) and richness CO2Absorbent 115；
By rich CO2Absorbent 115 is sent to CO2Absorbent regeneration is carried out using the thermal energy of above-mentioned offer in regenerator 10 and is obtained
Obtain poor CO2Absorbent 117 is to be recycled to CO2Absorber 9 continues with and desorbs CO2(from CO2Regenerator 10 discharges).
In one day, which will run about 12h in the case where being in high-load condition daytime, and be in underload at night
Under the conditions of run about 12h；The high-load condition refers to needing steam turbine unit under the rated capacity higher than 75%
The condition of operation, what the low load condition referred to steam turbine unit is needed to run under 75% rated capacity below
Condition.
Wherein, during power station is under low load condition and runs, the 6th logistics 118 extracted from degasser 7 is (more
Up to total boiler feed capacity of the 80wt% in degasser 7) it send into the first storage tank 11；In CO2Absorbent regeneration in regenerator 10
All thermal energy be all to be provided by the 2nd LP steam 107；The 21wt% of 2nd LP steam, 107 Zhan total LP steam 106；When
Power station is under high-load condition during operation, does not extract boiler feedwater to TES system from boiler feedwater pre-heating system；But
The boiler feedwater being stored in TES system during low load condition is run is discharged during the heavy-duty service to regenerate
Absorbent；Wherein, in CO2The thermal energy of absorbent regeneration is provided by 90% by TES system in regenerator 10 thermal energy and
10% thermal energy provided by the 2nd LP steam 107 is formed；The 3wt% of the total LP steam 106 of 2nd LP steam, 107 Zhan.
The result is that: when power station is run under high-load condition, HP steam turbine 2 can be in 100% rated capacity
Lower operation, IP steam turbine 3 can be run under 95% rated capacity, LP steam turbine can 90% specified appearance
The lower operation of amount, so that the power station will answer the more electric power of generation required during heavy-duty service.
Comparative example 1
The example is using shown in Fig. 2 including the power station of TES system, the operation of the example such as embodiment 1 one
Sample, only the difference is that in CO2The thermal energy of absorbent regeneration is provided by LP steam (when the generator completely in regenerator 10
When in during high-load condition operation, the 28wt% of the total LP steam 106 of 107 Zhan of the 2nd LP steam), and whole boilers
Water supply all will loop to not extract in boiler 1 and send into TES system.
The result is that: when power station is run under high-load condition, HP steam turbine 2 can be in 100% rated capacity
Lower operation, IP steam turbine 3 can be run under 80% rated capacity, LP steam turbine can 65% specified appearance
The lower operation of amount, so that the power station will be unable to answer the more electric power of generation required during heavy-duty service.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (10)
1. a kind of method from the power station run under the loading condiction of variation production electric power, which is characterized in that the power generation
Stand including boiler, be equipped with steam turbine unit, the CO of boiler feedwater pre-heating system2Trapping system and thermal energy storage (TES)
System,
Wherein, it this method comprises: when the power station is run under low loading conditions, is extracted from the boiler feedwater pre-heating system
Part boiler feedwater makes the CO to store into TES system2The thermal energy portion that absorbent regeneration in trapping system uses
Divide or all by being provided from the boiler feedwater being stored in the TES system.
2. according to the method described in claim 1, wherein, the CO2Trapping system absorbs CO as absorbent using solvent2。
3. method according to claim 1 or 2, wherein the steam turbine unit includes high pressure (HP) steamturbine
Machine, middle pressure (IP) steam turbine and low pressure (LP) steam turbine, wherein taken out under low loading conditions from IP/LP intersection
Take LP steam for the CO2Absorbent regeneration in trapping system provides thermal energy, and for described under high-load condition
CO2The thermal energy of absorbent regeneration includes the thermal energy being stored in TES system in trapping system.
4. according to the method described in claim 3, wherein, being based under high-load condition in the CO2In trapping system again
The total heat energy of raw absorbent, is at least 25% by the thermal energy ratio for absorbent regeneration that the TES system provides, preferably
At least 50%.
5. method described in any one of -4 according to claim 1, wherein the boiler feedwater pre-heating system includes degassing
Device, and this method include from extraction section boiler feedwater in the degasser into the TES system to save as heat source；
It is preferably based on the total amount of the boiler feedwater in the degasser, extracted from the degasser and is sent to the TES system
In boiler feedwater amount be 1-90 weight %, preferably 10-85 weight %.
6. method described in any one of -5 according to claim 1, wherein the power station is coal-fired rankine cycle or natural
Gas combined cycle.
7. a kind of with CO2The power station of trapping system, which is characterized in that the power station includes: boiler, to be equipped with boiler feedwater pre-
Steam turbine unit, the CO of hot systems2Trapping system and thermal energy storage (TES) system；
Wherein, TES system and the boiler feedwater pre-heating system and CO2Trapping system is connected, so that the power station is low negative
When being run under the conditions of lotus, from the boiler feedwater pre-heating system extraction section boiler feedwater to store into TES system, and make
The CO2The thermal energy that absorbent regeneration in trapping system uses is partly or entirely by from being stored in the TES system
Boiler feedwater provides.
8. power station according to claim 7, wherein the steam turbine unit includes high pressure (HP) steamturbine
Machine, middle pressure (IP) steam turbine and low pressure (LP) steam turbine, and IP/LP intersection and the CO2Trapping system phase
Even, so that extracting LP steam from the IP/LP intersection under low loading conditions as the CO2Absorbent in trapping system
Regeneration provides thermal energy.
9. power station according to claim 7 or 8, wherein the boiler feedwater pre-heating system includes degasser, and described
Degasser is connected to the TES system, so that the TES system is drawn from the part boiler of the degasser filled with part
Water supply.
10. the power station according to any one of claim 7-9, wherein the power station be coal-fired rankine cycle or
Gas theory.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205568.5A CN110274218B (en) | 2018-03-13 | 2018-03-13 | Method for producing power from a power plant operating under varying load conditions and power plant |
| PCT/CN2018/079403 WO2019174059A1 (en) | 2018-03-13 | 2018-03-19 | Process for producing electricity from power plant operated under variable load conditions, and power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205568.5A CN110274218B (en) | 2018-03-13 | 2018-03-13 | Method for producing power from a power plant operating under varying load conditions and power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110274218A true CN110274218A (en) | 2019-09-24 |
| CN110274218B CN110274218B (en) | 2020-09-29 |
Family
ID=67907211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810205568.5A Active CN110274218B (en) | 2018-03-13 | 2018-03-13 | Method for producing power from a power plant operating under varying load conditions and power plant |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110274218B (en) |
| WO (1) | WO2019174059A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603928B (en) * | 2020-05-24 | 2021-07-06 | 西安交通大学 | Efficient, clean and flexible cooperative coal-fired power generation system and operation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670714A (en) * | 2012-09-04 | 2014-03-26 | 阿尔斯通技术有限公司 | A method of increasing electricity output during high demand |
| CN104613654A (en) * | 2015-01-13 | 2015-05-13 | 宁波瑞信能源科技有限公司 | Combined-type-solar-system power-plant water-feeding and CO2-collecting assisted integrated system |
| CN106582200A (en) * | 2017-01-25 | 2017-04-26 | 天津大学 | Flue gas carbon capturing system for temperature swing adsorption power plant by virtue of intermediate steam extraction |
| CN207042190U (en) * | 2017-05-16 | 2018-02-27 | 广东电网有限责任公司电力科学研究院 | A kind of cryogenic carbon trapping system |
| JP6342539B1 (en) * | 2017-03-27 | 2018-06-13 | 三菱日立パワーシステムズ株式会社 | Power plant and operation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262484A (en) * | 1977-10-18 | 1981-04-21 | Rolls-Royce Limited | Gas turbine engine power plant using solar energy as a heat source |
| EP1577548A1 (en) * | 2004-03-16 | 2005-09-21 | Abb Research Ltd. | Apparatus and method for storing thermal energy and generating electricity |
| US7274111B2 (en) * | 2005-12-09 | 2007-09-25 | General Electric Company | Methods and apparatus for electric power grid frequency stabilization |
| EP2101051A1 (en) * | 2008-03-12 | 2009-09-16 | Siemens Aktiengesellschaft | Storage of electrical energy in a heat accumulator and reverse electrical energy production by means of a thermodynamic cycle |
| US8893505B2 (en) * | 2012-02-08 | 2014-11-25 | King Fahd University Of Petroleum And Minerals | Integrated solar-gas turbine cogeneration plant |
-
2018
- 2018-03-13 CN CN201810205568.5A patent/CN110274218B/en active Active
- 2018-03-19 WO PCT/CN2018/079403 patent/WO2019174059A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670714A (en) * | 2012-09-04 | 2014-03-26 | 阿尔斯通技术有限公司 | A method of increasing electricity output during high demand |
| CN104613654A (en) * | 2015-01-13 | 2015-05-13 | 宁波瑞信能源科技有限公司 | Combined-type-solar-system power-plant water-feeding and CO2-collecting assisted integrated system |
| CN106582200A (en) * | 2017-01-25 | 2017-04-26 | 天津大学 | Flue gas carbon capturing system for temperature swing adsorption power plant by virtue of intermediate steam extraction |
| JP6342539B1 (en) * | 2017-03-27 | 2018-06-13 | 三菱日立パワーシステムズ株式会社 | Power plant and operation method thereof |
| CN207042190U (en) * | 2017-05-16 | 2018-02-27 | 广东电网有限责任公司电力科学研究院 | A kind of cryogenic carbon trapping system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110274218B (en) | 2020-09-29 |
| WO2019174059A1 (en) | 2019-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111140296B (en) | Thermal power generating unit molten salt cascade storage and release energy peak regulation system and method | |
| KR101567712B1 (en) | Hybrid power generation system and method using a supercritical CO2 cycle | |
| Olumayegun et al. | Thermodynamic performance evaluation of supercritical CO2 closed Brayton cycles for coal-fired power generation with solvent-based CO2 capture | |
| CN102691537B (en) | Carbon dioxide recovery type thermal power generation system and method for operation thereof | |
| US8938966B2 (en) | Storage of electrical energy with thermal storage and return through a thermodynamic cycle | |
| US7469542B2 (en) | Cascade power system | |
| CN104963776B (en) | A kind of solar heat complementation association circulating power generation system | |
| AU2010202597B2 (en) | Method for operating a steam turbine power plant and also device for generating steam | |
| JP2000000076U (en) | Combined gas / steam turbine power plant | |
| CN202177093U (en) | Multi-level efficient displacement type fume waste-heat utilization system | |
| CN212003284U (en) | Fused salt step storage energy peak regulation system of thermal power generating unit | |
| CN102388265A (en) | Method and apparatus for generating electrical power | |
| CN102451599A (en) | Carbon dioxide recovery method and carbon-dioxide-recovery-type steam power generation system | |
| CN104307308B (en) | Process system for decarbonizing by using photovoltaic assisted coal combustion set | |
| CN110207092A (en) | A kind of fired power generating unit power generation peak adjusting system and method based on the full heat heating fused salt accumulation of heat of steam | |
| CN106194299B (en) | A kind of carbon trapping and supercritical CO2The electricity generation system of Brayton cycle coupling | |
| CN105756732B (en) | A kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT | |
| CN110274218A (en) | Method and power station from the power station production electric power run under the loading condiction of variation | |
| CN109026240A (en) | The electricity generation system and method coupled based on nuclear energy with solar energy | |
| CN102278205A (en) | Combined cycle method capable of being used for distributed air and fuel humidified gas turbine | |
| CN201723313U (en) | Gas turbine combined cycling device for distributed air and fuel humidification | |
| JPH02123246A (en) | Method of generating shaft power | |
| CN115680882A (en) | Heat storage system based on gas turbine and working method | |
| US11913360B2 (en) | Method for operating a power plant in order to generate electrical energy by combustion of a carbonaceous combustible, and corresponding system for operating a power plant | |
| CN209081829U (en) | A kind of coal generating system of band CO2 trapping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee after: Beijing low carbon clean energy research institute Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: SHENHUA GROUP Corp.,Ltd. Patentee before: Beijing low carbon clean energy research institute |