CN110360862A - Solid Jie's energy-storage system and method based on fluidized bed heating - Google Patents
Solid Jie's energy-storage system and method based on fluidized bed heating Download PDFInfo
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- CN110360862A CN110360862A CN201910590239.1A CN201910590239A CN110360862A CN 110360862 A CN110360862 A CN 110360862A CN 201910590239 A CN201910590239 A CN 201910590239A CN 110360862 A CN110360862 A CN 110360862A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention discloses it is a kind of based on fluidized bed heating solid Jie's energy-storage system and method, including be sequentially connected heater riser room, high temperature storage tank, heat-exchanger rig, low-temperature storage tank.System is using the high temperature resistants such as sand solid particle as energy storage and heat transferring medium.Fluidized bed heater riser device is selected in heater riser room, and heater riser room bottom is provided with heating air-distribution device.Low-temperature storage tank top is equipped with charging gear, and lower part is provided with overflow port.Material-returning device is equipped between low-temperature storage tank and heater riser room.Cold conditions solid heat-storage medium is sent into low-temperature storage tank by charging gear, and heater riser room is sent into from low-temperature storage tank by material-returning device, it carries out fluidisation and is heated as high-temp solid heat-storage medium, be stored in high temperature storage tank, heat exchange utilization is carried out by heat-exchanger rig when needing.Low-temperature solid heat-storage medium after heat exchange is stored into low-temperature storage tank.The present invention has many advantages, such as that technical requirements are simple, comprehensive utilization of energy rate is high.
Description
Technical field
The present invention relates to the solid Jie's energy-storage system heated based on fluidized bed and method, belongs to energy stores and utilize field.
Background technique
In recent years, the renewable energy such as wind energy, solar energy are increasingly taken seriously as clean energy resource, and installed capacity exists
All over the world, it increases sharply particularly in China.However, renewable energy power generation be usually it is unstable, be not able to satisfy general
Power demand especially accounts for the very big area of generated energy in wind energy or solar energy.When thermal power generation or nuclear energy power generation amount cannot be with
The variation of electricity needs and when changing, it is necessary to abandon part wind-force/solar power generation, to maintain the stabilization of power grid, thus make
At great energy waste.In addition, Chinese " three Norths " regional (North China, northeast and northwest) based on cogeneration units, the winter
When season heats, it be easy to cause serious " abandonment " phenomenon.And energy storage is as technological means, abandonment can be effectively relieved rations the power supply and ask
Topic, improves the flexible peak modulation capacity of fired power generating unit, increases the grid-connected rate of new energy.In recent years, more and more researchers endeavour
In the emerging energy storage technology of exploitation.Energy storage technology can be divided mainly into three kinds: store in form of electricity, such as capacitor or secondary electricity
Pond；It is stored in the form of mechanical energy, such as compressed air, water-storage and flywheel energy storage；It stores in the form of heat, such as with molten
Salt etc. is used as heat-storage medium, and the thermal energy storages such as solar energy, geothermal energy, industrial exhaust heat are got up.Heat-storage technology can it is lower at
Moderate energy density is obtained under this, is suitble to extensive energy storage.Sensible heat heat-storage technology is heat accumulation mode more mature at present,
Development bottleneck essentially consists in heat-storage medium.Low in cost and operating temperature range is extensively the two big elements for examining heat-storage medium.Phase
It is the big critical issue for limiting the development of solid heat-storage medium than the coefficient of heat transfer lower during fluid, heat accumulation.
Summary of the invention
It is built-in below fluidized bed middle part to add the purpose of the present invention is to provide the solid Jie's energy-storage system heated based on fluidized bed
Thermal, while being aided with hot wind and doing fluidizing agent, using solid particle as energy-accumulating medium, by fluidized bed heating means, improve
The heat exchange efficiency of solid particle realizes high temperature sensible heat heat accumulation.
The present invention is achieved through the following technical solutions:
Based on solid Jie's energy-storage system of fluidized bed heating, the system comprises heater riser room, high temperature storage tank, heat exchange dresses
It sets and low-temperature storage tank, the system selects solid heat-storage medium for energy storage and heat transferring medium, the high temperature outlet is by changing
Thermal is connect with the low-temperature storage tank import；Fluidized bed heater riser device is selected in the heater riser room, and the heating mentions
It rises below in the middle part of room and is built-in with heating device；Heater riser room bottom is provided with heating air-distribution device, for being passed through fluidisation
Medium；Heater riser ceiling portion is equipped with outlet and is connected with the high temperature storage tank import；The low-temperature storage tank is equipped with feed dress
It sets, material-returning device is provided between the low-temperature storage tank and the heater riser room, the material-returning device includes being sequentially connected
Material blanking tube, material returning valve and feed back pipe, the low-temperature storage tank bottom are connected with material blanking tube, the feed back pipe and the heater riser room
It is connected and connector is located above the heating air-distribution device.
In above-mentioned technical proposal, the low-temperature storage tank bottom is provided with overflow air-distribution device, the low-temperature storage tank lower part one
Side is provided with overflow port, and the overflow port is arranged in the upper side of the overflow air-distribution device, and the overflow port is fallen with described
Expects pipe is connected；Side is equipped with gas discharge outlet at the top of the low-temperature storage tank.
In above-mentioned technical proposal, the system also includes gas-solid separator, the gas-solid separator entrance and the heating
It promotes room outlet to be connected, the gas-solid separator bottom is equipped with material outlet and is connected with the high temperature storage tank import；The gas-solid
Gas vent is equipped at the top of separator to be connected with the low-temperature storage tank bottom and the heating air-distribution device respectively.
In above-mentioned technical proposal, the solid heat-storage medium selects high temperature resistant solid particle, the high temperature resistant solid particle
Including sand, silicon-carbide particle, any one or more of mixture of ceramic particle.
In above-mentioned technical proposal, the solid heat-storage medium further includes adding metal powder in the high temperature resistant solid particle
The complex fire resistant solid heat-storage medium of formation, the metal powder include aluminium powder, copper powder or iron powder.
In above-mentioned technical proposal, high temperature outlet valve is provided between the high temperature outlet and the heat-exchanger rig
Door.
In above-mentioned technical proposal, heat-exchanger rig outlet valve is provided between the heat-exchanger rig and the low-temperature storage tank.
In above-mentioned technical proposal, the heater riser room, high temperature storage tank, heat-exchanger rig, low-temperature storage tank and gas solid separation
The wall surfaces such as device and material-returning device are equipped with thermal insulation material.
In above-mentioned technical proposal, the heating device selects electric heating module or pipe heat exchanger.
A kind of energy storage method that is situated between admittedly uses solid Jie's energy-storage system as described above based on fluidized bed heating, the side
Method includes:
By cold conditions solid heat-storage medium by charging gear be sent into low-temperature storage tank, and from the material blanking tube of low-temperature storage tank bottom into
Enter material returning valve, by the flow of feed back valve regulation solid heat-storage medium, is sent into heater riser from feed back pipe by solid heat-storage medium
Room；
Hot wind is passed through as fluidisation heat medium from the heating air-distribution device of heater riser room bottom, and the solid heat accumulation is situated between
Matter is fluidized in the fluid mapper process of heat medium in heater riser room while being heated by heating device, becomes high-temp solid heat accumulation Jie
Matter, and export and flow out from heater riser ceiling portion under the entrainment of fluidisation heat medium, collect into high temperature storage tank and stores heat
Amount；
So that high-temp solid heat-storage medium is entered heat-exchanger rig from high temperature storage tank, carries out dividing wall type with the working medium in heat-exchanger rig
Heat exchange, while increasing Temperature of Working, high-temp solid heat-storage medium temperature, which reduces, becomes low-temperature solid heat-storage medium, imports low
In warm storage tank；
When continuing heat accumulation, low-temperature solid heat-storage medium is made to enter heater riser by the material-returning device of low-temperature storage tank bottom
Room repeats above-mentioned heating procedure.
In above-mentioned technical proposal, the system also includes gas-solid separators and material-returning device；The gas-solid separator entrance
It is connected with heater riser room outlet, the gas-solid separator bottom is equipped with material outlet and the high temperature storage tank import phase
Even；Be equipped at the top of the gas-solid separator gas vent respectively with the low-temperature storage tank bottom and heater riser room bottom phase
Even；The low-temperature storage tank bottom is provided with overflow air-distribution device, and low-temperature storage tank lower part side is provided with overflow port, described to overflow
Head piece is arranged in the upper side of the overflow air-distribution device, and the overflow port is connected with the material blanking tube, the feed back pipe with
The heater riser room is connected and connector is located above the heating air-distribution device；Side is equipped with gas at the top of the low-temperature storage tank
Body discharge outlet；The described method includes:
Cold conditions solid heat-storage medium is sent into the overflow air-distribution device that low-temperature storage tank collects in its bottom by charging gear
On；So that cold conditions solid heat-storage medium is fallen into material blanking tube from overflow port, then passes sequentially through material returning valve and feed back pipe enters heating
Promote room lower part；
Hot wind is passed through as fluidisation heat medium from the heating air-distribution device of heater riser room bottom, and the solid heat accumulation is situated between
Matter is fluidized in the fluid mapper process of heat medium in heater riser room while being heated by heating device, becomes high-temp solid heat accumulation Jie
Matter, and export and flow out from heater riser ceiling portion under the entrainment of fluidisation heat medium, into carrying out gas-solid in gas-solid separator
Separation；
The high-temp solid material for making gas solid separation get off enters high temperature storage tank as high-temp solid heat-storage medium and collects and store up
Deposit heat；High-temperature gas after making gas solid separation is split into two parts, and a part of high-temperature gas therein is made to lead to low-temperature storage tank
The overflow air-distribution device of bottom leads to the heating air-distribution device of heater riser room bottom as overflow wind, another part high-temperature gas
As fluidisation heat medium；
High-temp solid heat-storage medium is set to collect storage in high temperature storage tank；
So that high-temp solid heat-storage medium is entered heat-exchanger rig from high temperature storage tank, carries out dividing wall type with the working medium in heat-exchanger rig
Heat exchange, while increasing Temperature of Working, high-temp solid heat-storage medium temperature, which reduces, becomes low-temperature solid heat-storage medium, imports low
In warm storage tank；
When continuing heat accumulation, make low-temperature solid heat-storage medium in the overflow being passed through from the overflow air-distribution device of low-temperature storage tank bottom
Under wind effect, material blanking tube is fallen into from overflow port, material returning valve is then passed sequentially through and feed back pipe enters heater riser room lower part, weight
Multiple above-mentioned heating process.
In above-mentioned technical proposal, by adjusting high temperature outlet valve, the flow for adjusting high-temp solid heat-storage medium makes
The heat that the working medium heat exchange that the heat fed by high-temp solid heat-storage medium is more than or equal in the heat-exchanger rig carries away, makes
The heat transfer temperature difference of high-temp solid heat-storage medium and working medium in the heat-exchanger rig is constant.
In above-mentioned technical proposal, the material returning valve bottom is provided with loosening air hose, for being passed through loosening wind.
In above-mentioned technical proposal, the solid heat-storage medium selects 800~1000 DEG C of heatproof of high temperature resistant solid particle, institute
Stating high temperature resistant solid particle includes sand, silicon-carbide particle, appointing in ceramic particle or a variety of mixtures.
The present invention has the following advantages and beneficial effects: 1) being closed based on the mismatch between network load and actual power generation
System, can be by excess energy in a variety of forms, as electric energy or form of thermal energy input energy-storage system, and is transferred to sand with form of thermal energy
It is stored in the high temperature resistants solid particle such as son, improves wind electricity digestion capability, alleviate wind-abandoning phenomenon；2) due to high temperature resistants such as sands
The working range of solid particle is larger, it can be achieved that high-grade thermal energy storage, heats air using the solid particle for storing heat
Or the media such as water, and can be applied in industrial production；3) it selects suitable solid particle to do heat-storage medium, such as sand, is not only
Excellent heat-storage medium, and easily obtain, low in cost, high temperature resistant；4) heating method for utilizing fluidized bed, will be traditional thermally conductive
Form is changed to the form of the heat convection in fluidized bed, enhances the exchange capability of heat of solid particle, solves the solids such as sand
The solid particles such as sand are quickly heated up to high temperature by the lower problem of grain thermal coefficient.
Detailed description of the invention
Fig. 1 is solid Jie's energy-storage system signal based on fluidized bed heating of one of embodiment involved in the present invention
Figure.
Fig. 2 is solid Jie's energy-storage system schematic diagram based on fluidized bed heating of another embodiment involved in the present invention.
In figure: 1- heater riser room；2- heats air-distribution device；3- gas-solid separator；4- high temperature storage tank；5- high temperature
Outlet valve；6- heat-exchanger rig；7- heat-exchanger rig outlet valve；8- low-temperature storage tank；9- overflow port；10- feed dress
It sets；11- material-returning device；12- material returning valve；13- overflow air-distribution device；14- material blanking tube；15- feed back pipe；16- is pressurized wind
Machine.
Specific embodiment
A specific embodiment of the invention and the course of work are further described with reference to the accompanying drawing.
The positional terms such as the upper, lower, left, right, front and rear in present specification be positional relationship based on the figure and
It establishes.Attached drawing is different, then corresponding positional relationship is also possible to change therewith, therefore cannot be interpreted as with this to protection model
The restriction enclosed.
The present invention is advanced optimizing and change to PCT/JP2018/038493 (Patent 2017-221076) technology
Into.
As shown in Figure 1, solid Jie's energy-storage system based on fluidized bed heating, including heater riser room 1, high temperature storage tank 4, heat exchange
Device 6 and low-temperature storage tank 8.System is using high temperature resistant solid particle as energy storage and heat transferring medium, including sand, silicon-carbide particle, pottery
Any one or more of mixture of porcelain particle, theoretical highest heat accumulation temperature range are 800~1000 DEG C.It can also will be resistance to
The complex fire resistant solid heat-storage medium of metal powder formation is added in high-temperature solid particle as solid heat-storage medium, metal powder
End includes aluminium powder, copper powder or iron powder.Fluidized bed heater riser device is selected in heater riser room 1, and 1 bottom of heater riser room is provided with
Air-distribution device 2 is heated, heating air-distribution device 2 includes heating wind air compartment and heating air distribution plate, for being passed through fluidisation heat medium.Add
Heat is promoted to be equipped with to export at the top of room 1 to be connected with 4 import of high temperature storage tank.
The outlet of high temperature storage tank 4 is connect by heat-exchanger rig 6 with 8 import of low-temperature storage tank.High temperature storage tank 4 is for being stored in heating
Promote the high-temp solid heat-storage medium that preset temperature is heated in room 1.The outlet of high temperature storage tank 4 and the outlet of heat-exchanger rig 6 are set respectively
It is equipped with high temperature outlet valve 5 and heat-exchanger rig outlet valve 7.
Low-temperature storage tank 8 is used to store the low-temperature solid particle cooled down through heat-exchanger rig 6, while to mentioning in heater riser room 1
For low-temperature solid particle.8 top side of low-temperature storage tank is equipped with charging gear 10, and the other side is additionally provided with gas discharge outlet.System opens
When lossy in dynamic or operational process, cold conditions solid heat-storage medium is continuously provided into low-temperature storage tank from charging gear 10, with
Keep bed material constant height in low-temperature storage tank 8.Material-returning device 11, returning charge dress are provided between low-temperature storage tank 8 and heater riser room 1
Setting 11 includes material blanking tube 14, material returning valve 12 and the feed back pipe 15 being sequentially connected.By controlling the compression entered in material-returning device 11
The flow of air, the returning charge flow rate of adjustable system.
One of embodiment is as shown in Figure 1,8 bottom of low-temperature storage tank connects material blanking tube 14, by bottom blanking, and returns
Material valve 12 and feed back pipe 15 are connect with 1 lower part of heater riser room.The outlet of feed back pipe 15 is located above heating air distribution plate.
For another embodiment as shown in Fig. 2, 8 lower part of low-temperature storage tank is provided with overflow port 9, low-temperature storage tank 8 passes through overflow
Mouth was connected 9 communicating pipes with material blanking tube 14, then returned to 1 lower part of heater riser room by material returning valve 12 and feed back pipe 15, is located at and adds
Above hot air distribution plate.
At this point, 8 bottom of low-temperature storage tank is provided with overflow air-distribution device 13, overflow port 9 is arranged in overflow air-distribution device 13
Upper side.
In further improvement project, system further includes gas-solid separator 3,3 entrance of gas-solid separator and heater riser room 1
Outlet is connected, and 3 bottom of gas-solid separator is equipped with material outlet and is connected with 4 import of high temperature storage tank, and gas is equipped at the top of gas-solid separator 3
Body outlet, and be connected respectively by connecting tube with 8 bottom of low-temperature storage tank and 1 bottom of heater riser room.Gas-solid separator 3 is for dividing
From high-temperature gas and high-temperature solid particle, and the high-temperature solid particle that trapping is obtained is sent into height as high-temp solid heat-storage medium
It is stored in warm storage tank 4.High-temperature gas after gas solid separation is used separately as the overflow wind of low-temperature storage tank 8 and the stream of heater riser room 1
Change heat medium.Diameter parameters, wind speed of the design parameter of gas-solid separator 3 according to solid heat-storage medium particle etc. is selected.
Heating device is provided in heater riser room 1.Due to this energy-storage system be mainly used for wind energy, solar energy or it is other can
The renewable sources of energy individually generate electricity or the energy adjustment with thermoelectricity joint process, and system power or steam affluence when starts this storage
It can system heating heat accumulation.Therefore, heating device selects electric heating module or pipe heat exchanger, can be passed through steaming in pipe heat exchanger
Vapour or high-temperature gas are as working medium and the progress dividing wall type heating of solid heat-storage medium.Electric heating module and pipe heat exchanger can cloth
It sets in heater riser room 1, is generally arranged at middle part in heater riser room 1 hereinafter, and being located at 2 top of heating air-distribution device.Electricity
Heating module and pipe heat exchanger select shell and tube, and usual in-line arrangement, are convenient for solid heat-storage medium normal stream between pipe
It is logical.Except the heating device being arranged in heater riser room 1, hot air heat exchange further can also be set outside heater riser room 1
Device is passed through heating cloth wind dress again after heating the gas (including air and/or recyclegas) as fluidisation heat medium in advance
Set 2.System further includes booster fan 16, for promoting the pressure for being used as the high-temperature gas of fluidisation heat medium.
Admittedly Jie energy-storage system has two kinds of operating modes of heating and heat release.
Before system brings into operation, charging gear 10 is opened, a constant volume is fed into low-temperature storage tank 8 by charging gear 10
The solid particle of amount is as solid heat-storage medium.Later by valve regulated to suitable continuous-feeding rate, to maintain low temperature
Bed material is highly stable in storage tank 8, to reduce system pressure fluctuation.
After low-temperature solid heat-storage medium is heated to high temperature, level off rolling is entered along heater riser room 1
It is separated in gas-solid separator 3.High-temperature solid particle is entered in high temperature storage tank 4 as high-temp solid heat-storage medium and is stored.
High-temperature gas a part that gas-solid separator 3 exports enters in low-temperature storage tank 8, with the low-temperature solid heat accumulation in low-temperature storage tank 8
Media for heat exchange preheats low-temperature solid heat-storage medium, while it being made to keep bubbling fluidization state.High-temperature gas is cooled to after exchanging heat
It is discharged for cryogenic gas from 8 gas discharge outlet of low-temperature storage tank, is discharged after separation.Another part high-temperature gas is mentioned through booster fan 16
It is entered in heater riser room 1 after power of boosting, makes to be promoted the low-temperature solid heat-storage medium fluidisation in room 1 as fluidisation heating wind and add
Heat, while recovery section heat.When Fluidization wind rate deficiency, supplemented from heating air-distribution device 2.Rationally adjust above-mentioned two-way High Temperature Gas
The flow of body and the inlet flow rate of heater riser room 1 and low-temperature storage tank 8 make the two inlet flow rate small range near certain value
Fluctuation, to guarantee the stable operation of system.Above is the heating mode of system.
When system is in Heat release mode, high temperature outlet valve 5, the high-temp solid heat accumulation in high temperature storage tank 4 are opened
Medium is entered in heat-exchanger rig 6 by high temperature outlet valve 5 and is exchanged heat with cryogenic media.It, can be with to increase heat exchange efficiency
Accumulate high-temp solid heat-storage medium in heat-exchanger rig 6.Heat-exchanger rig outlet valve 7 is then turned on, after making heat exchange
Solid heat-storage medium enters low-temperature storage tank 8.As needed, high temperature outlet valve 5 and heat-exchanger rig outlet valve 7 is adjusted
Aperture, control solid heat-storage medium flow velocity, to obtain the working medium of required temperature, working medium includes water, steam, conduction oil or sky
Gas.
High-temp solid heat-storage medium can also be controlled by high temperature outlet valve 5 from high temperature storage tank 4 to heat-exchanger rig 6
Flow, so that the heat for feeding heat-exchanger rig 6 is more than or equal to the heat taken away of heat-exchange working medium, so that can in heat-exchange time
To keep the heat transfer temperature difference between high-temp solid medium and heat-exchange working medium constant, constant temperature heat exchange is realized.
High-temp solid heat-storage medium enters in low-temperature storage tank 8 after heat-exchange working medium is cooling.It is obtained through the heating of heat-exchanger rig 6
High temperature refrigerant enter in other equipment and work or be supplied to user.
At the end of to Heat release mode, next round heat cycles can be carried out.
By adjusting the wind speed of heater riser room 1, particle residence time can adjust, so as to adjust solid particle or gas temperature
Degree.Wherein the selected solid grain size range as solid heat-storage medium of an example is 100-300 μm, fluidising air velocity 3m/
s.Actual fluidising air velocity is selected according to the partial size and heat storage capacity of solid particle used.
Fluidising air velocity in low-temperature storage tank 8 selects 0.05~0.1m/s, and the particle in low-temperature storage tank 8 is made to be in bubbling bed shape
State.
Entire energy-storage system includes heater riser room 1, high temperature storage tank 4, heat-exchanger rig 6, low-temperature storage tank 8 and gas solid separation
The outside wall surfaces such as device 3 and material-returning device 11 select thermal insulation material to wrap up.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. solid Jie's energy-storage system based on fluidized bed heating, which is characterized in that the system comprises heater riser room (1), high temperature
Storage tank (4), heat-exchanger rig (6) and low-temperature storage tank (8), it is energy storage and heat transferring medium, institute that the system, which selects solid heat-storage medium,
High temperature storage tank (4) outlet is stated to connect by heat-exchanger rig (6) with the low-temperature storage tank (8) import；Heater riser room (1) choosing
With fluidized bed heater riser device, heater riser room (1) middle part is arranged below heating device；The heater riser room
(1) bottom is provided with heating air-distribution device (2), for being passed through fluidizing agent；Be equipped at the top of the heater riser room (1) outlet with
High temperature storage tank (4) import is connected；The low-temperature storage tank (8) is equipped with charging gear (10), and low-temperature storage tank (8) bottom is set
There is material-returning device (11) to connect with heater riser room (1) lower part, the material-returning device (11) includes the blanking being sequentially connected
Pipe (14), material returning valve (12) and feed back pipe (15), low-temperature storage tank (8) bottom are connected with material blanking tube (14), the feed back pipe
(15) it is connected with the heater riser room (1) and connector is located above the heating air-distribution device (2).
2. solid Jie's energy-storage system according to claim 1 based on fluidized bed heating, which is characterized in that the low-temperature storage tank
(8) bottom is provided with overflow air-distribution device (13), and low-temperature storage tank (8) the lower part side is provided with overflow port (9), the overflow
Mouth (9) is arranged in the upper side of the overflow air-distribution device (13), and the overflow port (9) is connected with the material blanking tube (14)；
Low-temperature storage tank (8) top side is equipped with gas discharge outlet.
3. solid Jie's energy-storage system according to claim 1 or 2 based on fluidized bed heating, which is characterized in that the system
It further include gas-solid separator (3), gas-solid separator (3) entrance is connected with the heater riser room (1) outlet, the gas-solid
Separator (3) bottom is equipped with material outlet and is connected with high temperature storage tank (4) import；It is equipped at the top of the gas-solid separator (3)
Gas vent is connected with the low-temperature storage tank (8) bottom and the heating air-distribution device (2) respectively.
4. solid Jie's energy-storage system according to claim 1 based on fluidized bed heating, which is characterized in that the solid heat accumulation
Medium selects high temperature resistant solid particle, and the high temperature resistant solid particle includes sand, silicon-carbide particle, any in ceramic particle
Kind or a variety of mixtures.
5. solid Jie's energy-storage system according to claim 4 based on fluidized bed heating, which is characterized in that the solid heat accumulation
Medium further includes the complex fire resistant solid heat-storage medium for adding metal powder in the high temperature resistant solid particle and being formed, the gold
Belonging to powder includes aluminium powder, copper powder or iron powder.
6. solid Jie's energy-storage system according to claim 1 based on fluidized bed heating, which is characterized in that the heating device
Select electric heating module or pipe heat exchanger.
7. a kind of solid Jie's energy storage method based on fluidized bed heating, using as described in claim 1 based on fluidized bed heating
Solid Jie's energy-storage system, which is characterized in that the described method includes:
Cold conditions solid heat-storage medium is sent into low-temperature storage tank (8) by charging gear (10), and falling from low-temperature storage tank (8) bottom
Expects pipe (14) enters material returning valve (12), and the flow of solid heat-storage medium is adjusted by material returning valve (12), will be consolidated from feed back pipe (15)
Body heat-storage medium is sent into heater riser room (1)；
Hot wind is passed through as fluidisation heat medium, the solid heat accumulation from the heating air-distribution device (2) of heater riser room (1) bottom
Medium is heated by heating device in the fluid mapper process of fluidisation heat medium simultaneously in heater riser room (1), becomes high-temp solid
Heat-storage medium, and flowed out under the entrainment of fluidisation heat medium from heater riser room (1) top exit, into high temperature storage tank (4)
Collect and stores heat；
The working medium for entering high-temp solid heat-storage medium in heat-exchanger rig (6), with heat-exchanger rig (6) from high temperature storage tank (4) carries out
Wall-type heat exchange, while increasing Temperature of Working, high-temp solid heat-storage medium temperature, which reduces, becomes low-temperature solid heat-storage medium,
It imports in low-temperature storage tank (8)；
Low-temperature solid heat-storage medium is set to enter heater riser room (1) by the material-returning device (11) of low-temperature storage tank (8) bottom.
8. solid Jie's energy storage method according to claim 7 based on fluidized bed heating, which is characterized in that the system is also wrapped
Include gas-solid separator (3) and material-returning device (11)；Gas-solid separator (3) entrance exports phase with the heater riser room (1)
Even, gas-solid separator (3) bottom is equipped with material outlet and is connected with high temperature storage tank (4) import；The gas-solid separator
(3) top is equipped with gas vent and is connected respectively with the low-temperature storage tank (8) bottom and the heater riser room (1) bottom；It is described
Low-temperature storage tank (8) lower part side is provided with overflow port (9), and the overflow port (9) is arranged in the overflow air-distribution device (13)
Upper side, the overflow port (9) are connected with the material blanking tube (14)；Low-temperature storage tank (8) top side is arranged equipped with gas
Put mouth；The described method includes:
Cold conditions solid heat-storage medium is sent into the overflow cloth wind dress that low-temperature storage tank (8) collect in its bottom by charging gear (10)
It sets on (13)；So that cold conditions solid heat-storage medium is fallen into material blanking tube (14) from overflow port (9), then pass sequentially through material returning valve (12) and
Feed back pipe (15) enters heater riser room (1) lower part；
Hot wind is passed through as fluidisation heat medium, the solid heat accumulation from the heating air-distribution device (2) of heater riser room (1) bottom
Medium is heated by heating device in the fluid mapper process of fluidisation heat medium simultaneously in heater riser room (1), becomes high-temp solid
Heat-storage medium, and flowed out under the entrainment of fluidisation heat medium from heater riser room (1) top exit, into gas-solid separator
(3) gas solid separation is carried out in；
The high-temp solid material for making gas solid separation get off enters high temperature storage tank (4) as high-temp solid heat-storage medium and collects and store
Heat；High-temperature gas after making gas solid separation is split into two parts, and a part of high-temperature gas therein is made to lead to low-temperature storage tank (8)
The overflow air-distribution device of bottom leads to the heating cloth wind of heater riser room (1) bottom as overflow wind, another part high-temperature gas
Device (2) is as fluidisation heat medium；
High-temp solid heat-storage medium is set to collect storage in high temperature storage tank (4)；
The working medium for entering high-temp solid heat-storage medium in heat-exchanger rig (6), with heat-exchanger rig (6) from high temperature storage tank (4) carries out
Wall-type heat exchange, while increasing Temperature of Working, high-temp solid heat-storage medium temperature, which reduces, becomes low-temperature solid heat-storage medium,
It imports in low-temperature storage tank (8)；
Make low-temperature solid heat-storage medium under the overflow wind effect being passed through from the overflow air-distribution device of low-temperature storage tank (8) bottom, from
Overflow port (9) falls into material blanking tube (14), then passes sequentially through material returning valve (12) and feed back pipe (15) enters heater riser room (2)
Lower part.
9. solid Jie's energy storage method according to claim 7 or 8 based on fluidized bed heating, which is characterized in that the high temperature
It is provided with high temperature outlet valve (5) between storage tank (4) outlet and the heat-exchanger rig (6), the method also includes:
By adjusting high temperature outlet valve (5), the flow for adjusting high-temp solid heat-storage medium makes through high-temp solid heat accumulation
The heat that the working medium heat exchange that the heat that medium is fed is more than or equal in the heat-exchanger rig (6) carries away, makes high-temp solid heat accumulation
The heat transfer temperature difference of medium and working medium in the heat-exchanger rig (6) is constant.
10. solid Jie's energy storage method according to claim 7 or 8 based on fluidized bed heating, which is characterized in that the solid
Heat-storage medium selects 800~1000 DEG C of heatproof of high temperature resistant solid particle, and the high temperature resistant solid particle includes sand, silicon carbide
Appointing in particle, ceramic particle or a variety of mixtures.
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| WO2022101669A1 (en) * | 2020-11-16 | 2022-05-19 | Magaldi Power S.P.A. | Fluidized bed heat exchanger and method |
| CN114941958A (en) * | 2022-05-27 | 2022-08-26 | 华能(浙江)能源开发有限公司长兴分公司 | Heat exchange equipment based on fluidized bed and phase-change material |
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Application publication date: 20191022 |