CN106352561A - Salt dissolving method and equipment for molten salt as heat transfer and storage medium for solar photo-thermal power station - Google Patents
Salt dissolving method and equipment for molten salt as heat transfer and storage medium for solar photo-thermal power station Download PDFInfo
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- CN106352561A CN106352561A CN201610843190.2A CN201610843190A CN106352561A CN 106352561 A CN106352561 A CN 106352561A CN 201610843190 A CN201610843190 A CN 201610843190A CN 106352561 A CN106352561 A CN 106352561A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The invention provides a salt dissolving method and equipment for molten salt as a heat transfer and storage medium for a solar photo-thermal power station. A molten salt circulating pump (6) and a molten salt delivery pump (7) are mounted in a molten salt storage tank (8), the molten salt enters the bottom of a molten salt furnace (5) through connection of the molten salt circulating pump (6) and gets out and returns to the molten salt storage tank (8) from the top of the molten salt furnace (5) through connection, a burner (4) is mounted on the molten salt furnace (5), a flue of the burner (4) is connected into the molten salt furnace (5) and connected out from a flue gas outlet in the lower part of the outer wall of the molten salt furnace (5), an air preheater (3), a blower (2) and a chimney (1) are mounted beside the molten salt furnace (5), and a screw conveyor (9) is mounted beside the molten salt storage tank (8). The equipment works stably after optimization of a preheating pipeline structure, the raw material using rate and production yield are high, loss of potassium nitrate and sodium nitrate is reduced, the working temperature is stable and higher, self-control and precise process adjustment is realized, and the thermal efficiency is high; the operation control and safety detection are reliable and convenient.
Description
Technical field
The present invention relates to c09k5/00 heat transfer in the utilization technology of f24j2/00 solar heat or ipc classification in ipc classification,
Heat exchange or the material of heat accumulation, especially solar energy thermo-power station fused salt pass heat storage medium salt dissolving method and apparatus.
Background technology
At present, status in Chinese solar electrical energy generation policy planning for the photo-thermal power generation starts to be obviously improved.Solar energy optical-thermal
Generating is one of big event in Solar use, as long as solar energy collecting is got up, heating working medium, and drive steam turbine generator
Can generate electricity.Photo-thermal power generation is to change into heat energy using solar energy, produces high steam driving steam turbine and generates electricity.Photo-thermal power generation system
The electricity generating principle of system is essentially identical with thermoelectricity system, is all by producing the motion of the steam drive steam turbine of High Temperature High Pressure, thus
Drive electrical power generators.Light thermo-power station is generally made up of solar energy heat-collection field, energy-storage system, the big module of electricity generation system three.To
After carrying out technology maturation, may apply even to desert area, produce the green energy resource of clean cleaning.Solar light-heat power-generation possesses
Energy storage peak shaving Action advantage is unique, can effectively solving photovoltaic, wind-powered electricity generation etc. serious abandon light wind-abandoning phenomenon.
Compared with common solar power plant, fused salt is then the preferred plan storing extensive electricity.As accompanying drawing 1 institute
Show, as long as fused salt is stored in big container, just almost can indefinitely preserve, and then the big energy that sunlight produces
Can preserve in indefinite duration.In fused salt power plant, huge mirror reflects sunlight, and heat is imported equipped with as heat transfer and heat-storage medium
The high tower of fused salt in.Fused salt is heated and starts to flow, and the water in the heater when flowing through reception device, produces powerful steaming
Vapour is with pushing turbine or CETRINE power generation operation.Contain big energy in steam, the whirlpool being connected with receptor can be driven easily
Turbine.The mechanical movement of turbine produces electric power.Therefore, fused salt solar power plant is to be generated electricity using red-hot fused salt.Both
Compare, the sharpest edges of fused salt are that it just can re-use Yi Dan cooling, and more valuable, fused salt is easily stored.This
Method for electric generation using solar energy is simple to operate, and energy conversion efficiency is high, does not have heat to lose from pipe, Operating Temperature Limit value is also relatively
Greatly.
Photo-thermal power generation is as peak regulation sharp weapon and the optimum complementation of other forms new forms of energy.With conventional new forms of energy form such as light
Volt/wind-powered electricity generation is compared, and photo-thermal as peak regulation sharp weapon, has two big unique advantages, can form optimum complementation with other Energy situations:
1) energy-storage system realizes peak-load regulation.Based on light thermo-power station, load and peaking power source, have than new forms of energy such as photovoltaic/wind-powered electricity generations
Unique advantage.Light thermo-power station passes through the medium such as fused salt or conduction oil by the waste heat being produced daytime and stores, at night
Between discharge heat, produce high temperature and high pressure steam, driving steam turbine generate electricity.The heat accumulation time requires to set according to Power Plant Design.2) profit
Carry out cogeneration with waste heat.Photovoltaic is directly converted into electricity by light, and empty calory produces；And photo-thermal power generation can produce amount of heat,
Therefore cogeneration can be carried out with after-heat by tonneau.For example Zhangjiakou demonstration area 70% is the thermal demand of winter heating, adopts
Can achieve the mode of cogeneration with light thermo-power station, realize zero carbon heating, energy saving.
Under prior art conditions, the cost of light thermo-power station is between 190-250/mwh；And advise with general photo-thermal power generation
The cost of electricity-generating of the suitable traditional fossil energy of mould only has 37-50 $/mwh.Although current light thermo-power station and traditional fossil energy
Compare, price do not possess competitiveness, but according to address prediction, solar energy thermal-power-generating probably in ten to ten five years,
Cost is had the ability to be reduced between 50-75 $/mwh.The 1% of China's sunlight-heat reaources is it is possible to solve 100% electricity needs.
In addition, from the point of view of illumination condition, the whole nation has more than 2/3rds area can reach year light application time more than 2000 hours.Its
In have ready conditions the development desert of solar power station and Gobi desert area is about 300,000 square kilometres, account for the 33% of China's desert area.
Only 100,000 square kilometres of annual electricity generating capacity just up to 6,000,000,000,000 kilowatt hours, the annual need for electricity higher than 2014.In addition, from
From the point of view of illumination condition, the whole nation has more than 2/3rds area can reach year light application time more than 2000 hours.Wherein there is bar
Part develops the desert of solar power station and Gobi desert area is about 300,000 square kilometres, accounts for the 33% of China's desert area.Only 100,000
Square kilometre annual electricity generating capacity just up to 6,000,000,000,000 kilowatt hours, the annual need for electricity higher than 2014.
In prior art, potassium nitrate and sodium nitrate are formed into two kinds of dominant chemical of fused salt, with photo-thermal power generation row
The developing rapidly of industry, 60% sodium nitrate 40% potassium nitrate Molten Binary Salts are to be suitable for solar-thermal generating system through practical proof
Ripe heat-storage medium, up to 600 DEG C of this temperature of molten salt, and be noxious substance, and equipment sealing reliability is required higher.
In Molten Salt Heat Transfer and heat-storage medium thermal technology's blood circulation, salt dissolving technology is particularly important.
Chinese patent application 201420005098.5 utilizes solar-energy light collector to provide the dress of heat energy for chemical storage batteries
Put and provide thermal source by solar-energy light collector for chemical storage batteries, chemical storage batteries internal structure can be optimized, improve chemistry
Battery power density, creates conditions for setting up large-scale power-type chemistry electric power storage station；Solar light-heat power-generation station configures large-scale work(
Rate type chemical storage batteries, can provide thermal source by power station for chemical storage batteries, reduce the dependence that electric power is externally carried out in power station simultaneously, be
Power station increases new energy storage electric power storage means；The chemical storage batteries being furnished with solar-energy light collector can also be separately as overall energy storage
Device is allocated to wind-force or photo-voltaic power generation station, in order to smoothing power parameter, improves power quality.
Chinese patent application 201210210082.3 is related to a kind of photo-thermal generating molten salt heating and discharging system, including fused salt
Storage tank equipment, heat-exchange system and fused salt heating exhaust apparatus, pass through between described three that pipeline formation one is airtight to be
System；Described fused salt heating exhaust apparatus includes fused salt groove and molten salt furnace, and described fused salt groove and molten salt furnace pass through between the two
Pipeline connection；Described fused salt storage tank equipment is one or two or plural fused salt storage tank；Between multiple fused salt storage tanks
Connected by pipeline, described pipeline is provided with heat-exchange system.
Chinese patent application 201410536906.5 discloses a kind of fused salt of solar light-heat power-generation and its preparation side
Method, described fused salt is made up of two kinds of different nitrate, and described two different nitrate are sodium nitrate and potassium nitrate.Preparation side
Method, with potassium chloride, nitrate as raw material, it includes following methods step: (1) material dissolution, (2) crystallisation by cooling, and (3) crystal rushes
Wash, (4) crystalline solid heat of solution, (5) filter, the dehydration of (6) finished product, drying.
Content of the invention
It is an object of the invention to provide a kind of solar energy thermo-power station fused salt passes heat storage medium salt dissolving method and apparatus, run
Stabilizing energy-saving.
The purpose of the present invention will be realized by following technical measures: includes chimney, aerator, air preheater, burning
Machine, molten salt furnace, molten salt circulating pump, fused salt delivery pump, fused salt storage tank, conveying worm, feed bin, electric block and fused salt tank；Molten
Molten salt circulating pump and fused salt delivery pump are installed in salt storage tank, connect from molten salt circulating pump and enter fused salt furnace bottom, and from molten salt furnace
Top connects and takes back fused salt storage tank again, and molten salt furnace is installed combustor, the flue of combustor connect enter molten salt furnace and from
The outlet flue of fused salt furnace outer wall bottom picks out, and installs air preheater, aerator and chimney by the molten salt furnace, aerator connect into
Enter air preheater, and connect from outlet flue and connect to chimney after air inlet preheater；Fused salt delivery pump connect into
Enter, by fused salt tank, fused salt storage tank, conveying worm is installed, above conveying worm feed end, feed bin is installed, install above feed bin
Electric block.
Especially, connect to be directly entered combustor from molten salt furnace.
Especially, the outlet flue of fused salt furnace outer wall bottom picks out three tap line, after one access air preheater again
Pick out chimney, it two is directly connected to chimney, it three is directly accessed combustor, and be respectively mounted in these three tap line from
Control valve.
Especially, fused salt delivery pump is to fused salt tank pipeline electric tracing thermal insulation, 300 DEG C of holding temperature.
Especially, the fused salt outlet temperature of molten salt furnace and combustor install Self-control interlock, are carried out certainly by controlling gas quantity
Dynamic control.
Especially, induction system is made up of fused salt delivery pump and associated conduit, and fused salt delivery pump adopts VFC, and with
Fused salt storage tank level chain, keeps fused salt storage tank level stability.
Especially, salt dissolving system start-up:
A: start for the first time: add water to fused salt storage tank, start molten salt circulating pump, molten salt furnace point stove；When fused salt stores up trough inner water
Temperature rise, to the agitator starting fused salt storage tank when 60 DEG C, is slowly added to nitrate by 60% sodium nitrate and 40% potassium nitrate proportioning,
Slowly heat up, temperature begins with a large amount of gas evaporations after rising to 90 DEG C simultaneously, substantially steam to 180 DEG C of moisture, start quick liter
Temperature is to 350 DEG C；Continue to add nitrate to fused salt storage tank by proportioning, control molten salt furnace fused salt outlet temperature stable, to fused salt storage
Tank liquor position rises to target level；Start fused salt delivery pump and with fused salt storage tank level chain, fused salt is delivered to fused salt tank；
B. it is again started up after stopping: after parking, before fused salt solidification, molten salt circulating pump and fused salt delivery pump are proposed fused salt
Storage tank；When being again started up, from molten salt circulating pump mouth to fused salt storage tank in add water, simultaneously by molten salt circulating pump installation site fused salt
Melt；It is installed and activated molten salt circulating pump, start combustor and molten salt furnace, slow intensification, temperature rises to confirmation fused salt when 85 DEG C
In storage tank, fused salt all dissolves, and installs fused salt delivery pump, starts the agitator of fused salt storage tank, and completion system is again started up.
Advantages of the present invention and effect: through preheating line construction optimize after equipment working stability, utilization rate of raw materials and
Produce high income, reduce potassium nitrate, the loss of sodium nitrate, operating temperature is stably higher, technique adjustment automatic control is accurate, the thermal efficiency
High；Run control and safety detection is reliably convenient.Support continuous cyclic production, save equipment investment, be greatly lowered and produce into
This, improve technology level.
Brief description
Fig. 1 is photo-thermal power generation principle schematic.
Fig. 2 is the salt dissolving device structure schematic diagram in the embodiment of the present invention 1.
Reference includes: chimney 1, aerator 2, air preheater 3, combustor 4, molten salt furnace 5, molten salt circulating pump 6, molten
Salt delivery pump 7, fused salt storage tank 8, conveying worm 9, feed bin 10, electric block 11, jumbo bag charging scffold 12, fused salt tank 13, stir
Mix device 14.
Specific embodiment
The principle of the invention is, salt dissolving system includes granulated salt charging system, Molten salt heating system and fused salt induction system.
Granulated salt charging system includes electric block, feed bin and conveying worm, and jumbo bag dress sodium nitrate and potassium nitrate are in proportion with electronic
Calabash is added in feed bin, is quantitatively adding in fused salt storage tank through conveying worm.Molten salt heating system is by molten salt circulating pump, combustion gas
Melt salt stove system, fused salt storage tank composition, fused salt is sent into molten salt furnace heat temperature raising through molten salt circulating pump, is returned fused salt storage tank and addition
Solid nitric acid salt mixing and melted.Fused salt storage tank set agitator so that add graininess nitrate mix with fused salt good
Good rapid melting.Fused salt induction system includes fused salt delivery pump and fused salt tank.
The present invention includes: chimney 1, aerator 2, air preheater 3, combustor 4, molten salt furnace 5, molten salt circulating pump 6, fused salt
Delivery pump 7, fused salt storage tank 8, conveying worm 9, feed bin 10, electric block 11 and fused salt tank 13.
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1: taking gas molten salt furnace system as a example, as shown in Figure 1, install molten salt circulating pump 6 He in fused salt storage tank 8
Fused salt delivery pump 7, connects from molten salt circulating pump 6 and enters molten salt furnace 5 bottom, and connect from molten salt furnace 5 top and take back fused salt again
Storage tank 8, molten salt furnace 5 is installed combustor 4, and the flue of combustor 4 connects entrance molten salt furnace 5 and from molten salt furnace 5 outer wall bottom
Outlet flue pick out, air preheater 3, aerator 2 and chimney 1 are installed molten salt furnace 5 is other, it is pre- that aerator 2 connects air inlet
Hot device 3, and connect from outlet flue and connect to chimney 1 after air inlet preheater 3；It is molten that fused salt delivery pump 7 connects entrance
Salt cellar 13, fused salt storage tank 8 is other to install conveying worm 9, installs feed bin 10, on feed bin 10 above conveying worm 9 feed end
Electric block 11 is installed by side.
In aforementioned, connect from molten salt furnace 5 and to be directly entered combustor 4.
In aforementioned, jumbo bag charging scffold 12 is installed on feed bin 10 and electric block 11 side.
In aforementioned, agitator 14 is installed at fused salt storage tank 8 middle part.
In aforementioned, the outlet flue of molten salt furnace 5 outer wall bottom picks out three tap line, after one accesses air preheater 3
Pick out chimney 1 again, it two is directly connected to chimney 1, it three is directly accessed combustor 4, and in these three tap line all
Internally piloted valve is installed.
In aforementioned, fused salt delivery pump 7 to fused salt tank 13 pipeline need to use electric tracing thermal insulation, 300 DEG C of holding temperature.
In the present embodiment, combustion air is provided by aerator 2 and introduces air preheater 3, through air preheater 3 and fused salt
Combustor 4 is entered, combustor 4 can realize combustion gas automatic Air Adjusting after the outlet flue flue gas heat exchange preheating of stove 5.Molten salt furnace 5 molten
Salt outlet temperature installs Self-control interlock with combustor 4, is automatically controlled by controlling gas quantity.Induction system is conveyed by fused salt
Pump 7 and associated conduit composition, fused salt delivery pump 7 adopts VFC, and with fused salt storage tank 8 level chain, keep fused salt storage tank 8
Level stability.
The present embodiment operationally, salt dissolving system start-up:
A: start for the first time: add water to fused salt storage tank 8, start molten salt circulating pump 6,5 points of stoves of molten salt furnace；When fused salt storage tank 8
Interior water temperature rises to the agitator starting fused salt storage tank 8 when 60 DEG C, is slowly added to nitre by 60% sodium nitrate and 40% potassium nitrate proportioning
Hydrochlorate, slowly heats up simultaneously, and temperature begins with a large amount of gas evaporations after rising to 90 DEG C, substantially steams to 180 DEG C of moisture, starts fast
Speed is warming up to 350 DEG C；Continue to add nitrate to fused salt storage tank 8 by proportioning, control molten salt furnace 5 fused salt outlet temperature stable, extremely
Fused salt storage tank 8 liquid level rises to target level；Start fused salt delivery pump 7 and with fused salt storage tank 8 level chain, fused salt is delivered to fused salt
Tank 13；
B. it is again started up after stopping: after parking, before fused salt solidification, molten salt circulating pump 6 and fused salt delivery pump 7 are proposed to melt
Salt storage tank 8；When being again started up, from molten salt circulating pump, 6 mouthfuls add water into fused salt storage tank 8, simultaneously by molten salt circulating pump 6 installation position
Put fused salt to melt；It is installed and activated molten salt circulating pump 6, starts combustor 4 and molten salt furnace 5, slow intensification, when temperature rises to 85 DEG C
Confirm that in fused salt storage tank 8, fused salt all dissolves, fused salt delivery pump 7 is installed, start the agitator of fused salt storage tank 8, completion system is again
Secondary startup.
In the present embodiment, salt dissolving system is started to needing 72 hours at full capacity by static.
In the present embodiment, molten salt furnace 5 is with fused salt as medium, forces liquid phase circulation to convey high-temperature molten salt through pump for liquid salts
Then return the special industrial stove that heating furnace reheats to heating equipment.Fuel produces after burner fully burns
High-temperature flue gas, fully carry out heat exchange with two kinds of heat exchange patterns of convection current with fused salt in stove to radiate.Molten salt furnace 5 is 600x104kcal/
H gas molten salt furnace, molten salt furnace 5 is mainly made up of heating system, combustion system and control system, and combustion combustor 4 includes gas supply
System, burner, molten salt furnace 5 includes heating furnace, flue explosion proof door and control system.Control system is divided into dynamic Control and instrument
Display control two parts.The starting of equipment and the stoppings such as dynamic Control major control pump for liquid salts, combustion air blower fan, burner,
Carry out interlocked control simultaneously between pump for liquid salts and burner and carry out safe operation to ensure heating furnace.Instrument display control is generally adopted
Carry out the regulation of salt temperature with outlet salt temperature control burner, import and export salt temperature shows and final exhaust gas temperature shows, using temperature letter
Number control burner is so as to reach automatic control function.
In the present embodiment, molten salt circulating pump 6 is 330gy-40 high temperature submerged pump, flow 330m3/ h, lift 40m, motor turns
Fast 1450r/min, power of motor 132kw.Main material 0cr18ni10ti (ss321) rustless steel；Join High aititude motor, electrically
Equipment protection grade: ip55；One to open one standby.
In the present embodiment, fused salt delivery pump 7 is 20gy-20 high temperature submerged pump, flow 40m3/ h, lift 20m, motor speed
1450r/min, power of motor 22kw；Main material 0cr18ni10ti (ss321) rustless steel；Join High aititude motor, electrical equipment
Degree of protection: ip55；One to open one standby.
In the present embodiment, fused salt storage tank 8 is the horizontal storage tank of diameter 2.8m, total volume 70m3, 40 tons of gross weight containing geosyncline, normal pressure
Operation, equipment material 15crmor.
In the present embodiment, by feed bin 10 total volume 5m3, conveying worm 9 and 3 tons of electric blocks 11 form feed systems.
Feed bin 10 and conveying worm 9 material are ss304 rustless steel.
In the present embodiment, fused salt is by potassium nitrate (kno3) and sodium nitrate (nano3) mixture.Maximum operating temperature can
Reach 600 DEG C of high temperature.
In the present embodiment, fused salt specification: sodium nitrate and potassium nitrate, 1t/ bag；Mixing match: 60% sodium nitrate and 40%
Potassium nitrate；The salt dissolving ability of salt dissolving system: 30t/h, day salt dissolving 720t, the whole about 50 days salt salt dissolving time of note；Fused salt enters tank temperature
Degree: 350 DEG C；150～580 DEG C of molten salt furnace 5 operating temperature, operating pressure is normal pressure, and design pressure is 1mpa, heat capacity 360
～14000kw, combustion system is coal-fired, fuel oil or combustion gas, and applicable fuel includes: bituminous coal, heavy oil, light oil, diesel oil, residual oil, sky
So air-liquid activating QI and town gas, automatically controls including mechanization, Automatic Control, proportion adjustment, plc is programmable and touches
Screen control technology.
In the present invention, under the management of automatic control system, by the mutual coordination of each system, achievable following functions:
1) stablize high temperature heat source and meet burden requirement；
2) keep whole hot systems stable operation, realize uninterruptedly continuously running；
3) realize thermic load to automatically adjust；
4) realize the safety interlocking feedback protection under damage；
5) there is the functions such as early warning under various abnormal conditions, warning, fault locking；
6) realize blower fan automatic blowing function when molten salt furnace 5 blow-on, blowing out；
7) can achieve automatically unmanned operation.
Claims (7)
1. solar energy thermo-power station fused salt passes heat storage medium salt dissolving method and apparatus, pre- including chimney (1), aerator (2), air
Hot device (3), combustor (4), molten salt furnace (5), molten salt circulating pump (6), fused salt delivery pump (7), fused salt storage tank (8), helical feed
Machine (9), feed bin (10), electric block (11) and fused salt tank (13)；It is characterized in that, fused salt circulation is installed in fused salt storage tank (8)
Pump (6) and fused salt delivery pump (7), connect from molten salt circulating pump (6) and enter molten salt furnace (5) bottom, and from molten salt furnace (5) top even
Pick out and take back fused salt storage tank (8) again, molten salt furnace (5) is upper to install combustor (4), and the flue of combustor (4) connects entrance molten salt furnace
(5) and the outlet flue from molten salt furnace (5) outer wall bottom picks out, air preheater (3), aerator are installed by molten salt furnace (5)
(2) and chimney (1), aerator (2) connects air inlet preheater (3), and connects air inlet preheater from outlet flue
(3) connect afterwards to chimney (1)；Fused salt delivery pump (7) connects to enter installs spiral transferring by fused salt tank (13), fused salt storage tank (8)
Send machine (9), above conveying worm (9) feed end, feed bin (10) is installed, electric block (11) is installed above feed bin (10).
2. solar energy thermo-power station fused salt as claimed in claim 1 pass heat storage medium salt dissolving method and apparatus it is characterised in that
Connect from molten salt furnace (5) and to be directly entered combustor (4).
3. solar energy thermo-power station fused salt as claimed in claim 1 pass heat storage medium salt dissolving method and apparatus it is characterised in that
The outlet flue of molten salt furnace (5) outer wall bottom picks out three tap line, and one picks out chimney after accessing air preheater (3) again
(1), it two is directly connected to chimney (1), and it three is directly accessed combustor (4), and be respectively mounted in these three tap line from
Control valve.
4. solar energy thermo-power station fused salt as claimed in claim 1 pass heat storage medium salt dissolving method and apparatus it is characterised in that
Fused salt delivery pump (7) is to fused salt tank (13) pipeline electric tracing thermal insulation, 300 DEG C of holding temperature.
5. solar energy thermo-power station fused salt as claimed in claim 1 pass heat storage medium salt dissolving method and apparatus it is characterised in that
The fused salt outlet temperature of molten salt furnace (5) installs Self-control interlock with combustor (4), is automatically controlled by controlling gas quantity.
6. solar energy thermo-power station fused salt as claimed in claim 1 pass heat storage medium salt dissolving method and apparatus it is characterised in that
Induction system is made up of fused salt delivery pump (7) and associated conduit, and fused salt delivery pump (7) adopts VFC, and with fused salt storage tank
(8) level chain, keeps fused salt storage tank (8) level stability.
7. solar energy thermo-power station fused salt as claimed in claim 1 pass heat storage medium salt dissolving method and apparatus it is characterised in that
Salt dissolving system start-up:
A: start for the first time: add water to fused salt storage tank (8), start molten salt circulating pump (6), molten salt furnace (5) point stove；When fused salt storage tank
(8) interior water temperature rises to the agitator starting fused salt storage tank (8) when 60 DEG C, slowly adds by 60% sodium nitrate and 40% potassium nitrate proportioning
Enter nitrate, slowly heat up simultaneously, temperature begins with a large amount of gas evaporations after rising to 90 DEG C, substantially steam to 180 DEG C of moisture, open
Begin to be rapidly heated to 350 DEG C；Continue to add nitrate to fused salt storage tank (8) by proportioning, control molten salt furnace (5) fused salt outlet temperature
Stable, rise to target level to fused salt storage tank (8) liquid level；Start fused salt delivery pump (7) and with fused salt storage tank (8) level chain,
Fused salt is delivered to fused salt tank (13)；
B. it is again started up after stopping: after parking, before fused salt solidification, molten salt circulating pump (6) and fused salt delivery pump (7) are proposed molten
Salt storage tank (8)；When being again started up, water is added to fused salt storage tank (8) is interior from molten salt circulating pump (6) mouth, simultaneously by molten salt circulating pump
(6) installation site fused salt melts；It is installed and activated molten salt circulating pump (6), start combustor (4) and molten salt furnace (5), slow liter
Temperature, temperature rises to and confirms when 85 DEG C that the interior fused salt of fused salt storage tank (8) all dissolves, and installs fused salt delivery pump (7), starts fused salt storage tank
(8) agitator, completion system is again started up.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610843190.2A CN106352561A (en) | 2016-09-05 | 2016-09-05 | Salt dissolving method and equipment for molten salt as heat transfer and storage medium for solar photo-thermal power station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610843190.2A CN106352561A (en) | 2016-09-05 | 2016-09-05 | Salt dissolving method and equipment for molten salt as heat transfer and storage medium for solar photo-thermal power station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766892A (en) * | 2017-03-07 | 2017-05-31 | 上海煜志机电设备有限公司 | Heat transfer energy storage molten salt fusing loading technique and system equipment |
| CN114484903A (en) * | 2021-12-28 | 2022-05-13 | 青海中控太阳能发电有限公司 | Photovoltaic photo-thermal sharing energy storage device and use method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205717990U (en) * | 2016-06-11 | 2016-11-23 | 新疆硝石钾肥有限公司 | Solar energy thermo-power station fused salt passes heat storage medium salt equipment |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205717990U (en) * | 2016-06-11 | 2016-11-23 | 新疆硝石钾肥有限公司 | Solar energy thermo-power station fused salt passes heat storage medium salt equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766892A (en) * | 2017-03-07 | 2017-05-31 | 上海煜志机电设备有限公司 | Heat transfer energy storage molten salt fusing loading technique and system equipment |
| CN114484903A (en) * | 2021-12-28 | 2022-05-13 | 青海中控太阳能发电有限公司 | Photovoltaic photo-thermal sharing energy storage device and use method thereof |
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