CN106050305A - Method for storing molten salt based on gob of anhydrite mine - Google Patents
Method for storing molten salt based on gob of anhydrite mine Download PDFInfo
- Publication number
- CN106050305A CN106050305A CN201610384347.XA CN201610384347A CN106050305A CN 106050305 A CN106050305 A CN 106050305A CN 201610384347 A CN201610384347 A CN 201610384347A CN 106050305 A CN106050305 A CN 106050305A
- Authority
- CN
- China
- Prior art keywords
- fused salt
- molten salt
- heat
- anhydrite
- storing
- 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
- 150000003839 salts Chemical class 0.000 title claims abstract description 101
- 229910052925 anhydrite Inorganic materials 0.000 title claims abstract description 36
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000005338 heat storage Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 238000004381 surface treatment Methods 0.000 abstract 1
- 238000009825 accumulation Methods 0.000 description 14
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000004146 energy storage Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000005439 thermosphere Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/16—Modification of mine passages or chambers for storage purposes, especially for liquids or gases
-
- 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
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a method for storing molten salt based on a gob of an anhydrite mine. The method for storing the molten salt based on the gob of the anhydrite mine comprises the following steps that surface treatment of the gob of the anhydrite mine is conducted, a molten salt storage bin is established, a power generation heat production device is established, and a steam power generator system and a heat supply system are established on the ground, wherein the steam power generator system communicates with a molten salt heat storage device through a pipeline, and the steam power generator system further comprises a molten salt heat exchange system and installation detection equipment. According to the method, the gob of the exploited anhydrite mine is used for storing the molten salt, energy is stored through electric heating or solar heating of the molten slat, heat supply and power supply are achieved through the steam power generator system, and the problems that in an existing molten salt heat storage device, the volume of an established tank is small, the quantity of stored molten salt is small, the molten salt heat storage capacity is limited, an established three-dimensional tank is large in occupied area and prone to being influenced of the environment change, periodical maintenance is needed, and the cost of a molten salt heat storage system is increased are solved.
Description
Technical field
The invention belongs to Anhydrite Ore geological storage technical field, particularly relate to a kind of based on the storage of Anhydrite Ore goaf
The method depositing fused salt.
Background technology
In light thermo-power station is developed, fused salt is as the heat transfer of a kind of better performances, heat accumulation working media, it has also become current light
Thermo-power station realizes the important leverage of long-time stable generating.Fuse salt is a kind of low cost, life-span length, high temperature that heat exchange property is good
(more than 500 DEG C), high heat-flux (more than 105W/) and low pressure (< 2bar) heat transfer medium.One traditional 50MW photo-thermal project
Heat reservoir include hot tank and two diameters of cold tank 70 feet, the jar of high about 30 feet.In directly storage electricity application city
, it is possible to use the fused salt of in jar about 5000 tons is heated by ready-made industrial electro heater, and at the other end, steam turbine is extracted
Energy in jar generates electricity.
Fused salt heat reservoir uses double tank sensible heat energy storage mode, uses Molten Binary Salts (40%KNO3-60%NaNO3) conduct
Heat accumulation and heat transfer medium, have heat accumulation and two kinds of mode of operations of heat release.During heat release, possess generation heating hot water and high-temperature steam two
Plant function.Its operational process is:
(1), during heat accumulation, low-temperature molten salt pump is extracted sloppy heat salt out feeding electric furnace from cold tank and is heated, the high temperature obtained
Fused salt flows into hot tank and stores.
(2), during heat release, the high-temperature molten salt in hot tank is transported to heat in heat exchanger or steam generator by high-temperature melting salt pump
Carrying out heat exchange with water/steam, the low-temperature molten salt after cooling flows in cold tank and stores.Heating heat exchanger or steam generator divide simultaneously
The most externally output heating hot water or high-temperature steam.
Existing fused salt heat reservoir mostly is sets up on ground how group up-right tank stores, and heat reservoir uses double-pot type
Heat accumulation.The capacity of the tank owing to setting up is less, and the fused salt amount of storage is the lowest, limits the quantity of heat storage of fused salt heat accumulation, and
It is relatively big that the up-right tank set up takies floor area, is easily affected by environmental change, needs periodically to safeguard, adds fused salt storage
The cost of hot systems.
Summary of the invention
The present invention is a kind of method storing fused salt based on Anhydrite Ore goaf, the Anhydrite Ore after being exploited by utilization
Goaf is used for storing fused salt, stores energy by electrical heating or solar energy heating fused salt, is supplied by steam generating system
Heat and power supply, solve in existing fused salt heat-storing device, and the capacity of the tank of foundation is less, and the fused salt amount of storage is the lowest, limit
Make the quantity of heat storage of fused salt heat accumulation.
The invention provides Anhydrite Ore goaf method in terms of energy storage, storing, comprise the steps:
The surface in a Anhydrite Ore goaf processes: the ground rubble in main tunnel, dust foreign material are cleaned out, then led to
Cross water under high pressure and carry out the cleaning on surface, and air-dried by blower fan air blast；
The foundation of b fused salt storage warehouse: the tunnel inner surface in Anhydrite Ore goaf fixes one layer of thermal insulation layer；Described every
The surface attachment one layer of heat preservation layer of thermosphere；
Wherein, in the every adjacent pair in Anhydrite Ore goaf props up tunnel, it is fixed with fused salt heat-storing device；A pair tunnel
In, the fused salt heat storage can in one of them tunnel is used for storing the low-temperature storage tank of low-temperature molten salt, melting in another tunnel
Salt heat storage can is for storing the high temperature storage tank of high-temperature molten salt.
The foundation of c power generating and heating device: set up steam-driven generator system and heating system on the ground；
Wherein, steam-driven generator system and fused salt heat-storing device pass through pipeline communication；Steam-driven generator system also includes melting
Salt heat-exchange system.
D installs detection equipment: be separately installed with temperature sensor, flammable gas alarm and powder in main tunnel and hoistway
Dirt detector.
Further, in the foundation of described step b fused salt storage warehouse, described thermal insulation layer uses high temperature insulating material；Described
Heat-insulation layer uses heat-preservation cotton.
Further, in the foundation of described step b fused salt storage warehouse, fused salt heat-storing device includes that one coordinates with tunnel
Bar shaped tank, is provided with pump for liquid salts in one end of tank.
The method have the advantages that
The present invention makes full use of Anhydrite Ore goaf and applies in terms of energy storage, storing, Gypsum Mine energy storage or the side of storing
Formula, has the feature such as Economization on land, reduced investment, operation staffing is few, safety is high, environmental pollution is few, length in service life.By profit
It is used for storing fused salt with the Anhydrite Ore goaf after exploitation, stores energy by electrical heating or solar energy heating fused salt, pass through
Steam generating system carries out heat supply and power supply, solves in existing fused salt heat-storing device, and the capacity of the tank of foundation is less, storage
Fused salt amount is the lowest, limits the quantity of heat storage of fused salt heat accumulation, and the up-right tank set up takies floor area relatively greatly, Yi Shouhuan
The impact of border change, needs periodically to safeguard, adds the cost of fused salt heat reservoir.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, embodiment will be described required use below
Accompanying drawing is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, for ability
From the point of view of the those of ordinary skill of territory, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings
Figure.
Fig. 1 is main tunnel and the layout drawing of entry well in the Anhydrite Ore goaf of the present invention；
Fig. 2 is the cross sectional representation in a tunnel in the Anhydrite Ore goaf of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, those of ordinary skill in the art obtained under not making creative work premise all other
Embodiment, broadly falls into the scope of protection of the invention.
Referring to shown in Fig. 1 and Fig. 2, the present invention is a kind of method storing fused salt based on Anhydrite Ore goaf, including
Following steps:
(1) surface in Anhydrite Ore goaf processes: the ground rubble in main tunnel 4, dust foreign material are cleaned out, then
Carried out the cleaning on surface by water under high pressure, and air-dried by blower fan air blast；
(2) foundation of fused salt storage warehouse: tunnel 5 inner surface in Anhydrite Ore goaf fixes one layer of thermal insulation layer 501；
The surface attachment one layer of heat preservation layer 502 of thermal insulation layer 501；Thermal insulation layer 501 uses high temperature insulating material；Heat-insulation layer 502 uses insulation
Cotton.Fused salt heat-storing device includes a bar shaped tank coordinated with a tunnel 5, is provided with pump for liquid salts in one end of tank.All devices is equal
Transported by the elevator device 2 in Anhydrite Ore hoistway 3.
Wherein, in the every adjacent pair in Anhydrite Ore goaf props up tunnel 5, it is fixed with fused salt heat-storing device；A pair tunnel
In 5, the fused salt heat storage can in one of them tunnel 5 is for storing the low-temperature storage tank of low-temperature molten salt, in another tunnel 5
Fused salt heat storage can is for storing the high temperature storage tank of high-temperature molten salt.
Wherein, low-temperature storage tank is provided with low-temperature molten salt pump, and high temperature storage tank is provided with high-temperature melting salt pump；Pump for liquid salts installation site
For the position near a ground, tunnel 5.
(3) foundation of power generating and heating device: set up steam-driven generator system 101 and heating system 102 on ground 1；Its
In, steam-driven generator system 101 and fused salt heat-storing device pass through pipeline communication；Steam-driven generator system 101 also includes that fused salt changes
Hot systems.
(4) detection equipment is installed: in main tunnel 4 and hoistway 3, be separately installed with temperature sensor, flammable gas alarm
And dust detector.
Patent CN201310167760.7 (" for fused salt heat accumulation and the heat-exchange system of solar energy thermal-power-generating ") provides
A kind of technology carrying out heat exchange generating based on solar energy thermal-power-generating by the way of fused salt heat accumulation.This is based on Anhydrite Ore goaf
The mode storing fused salt is the offset by the high temperature storage tank of fused salt heat accumulation and low-temperature storage tank are placed on Anhydrite Ore goaf
In road 5, owing to the mining depth of the Anhydrite Ore temperature in the degree of depth of 300-500m, a tunnel 5 of its Anhydrite Ore compares
Constant, free from the influence of the external environment to control to be relatively easy to the temperature of fused salt, reduce the maintenance to holding vessel, and,
The tank body of fused salt heat accumulation is arranged in sub-terrain mines hole, reduces the occupied area on ground 1, and, will not be to environment.
This Anhydrite Ore stores the principle of fused salt: include fused salt heat reservoir and fused salt heat exchange system；
Wherein, the heat-storing device of fused salt heat reservoir is arranged in a tunnel 5 of Anhydrite Ore, and in anhydrite ore mining
Tunnel 5 inner surface for dead zone fixes one layer of thermal insulation layer 501；The surface attachment one layer of heat preservation layer 502 of thermal insulation layer 501, by every
Thermosphere 501 stops that the heat of fused salt heat accumulation scatters and disappears, it is to avoid cause the temperature difference to corrode on the surface in hole, ore deposit, uses heat-insulation layer 502 to use
In the tank body of fused salt heat accumulation is incubated；
Wherein, fused salt heat exchange system is arranged on ground 1, sets up steam-driven generator system 101 and heat supply system on ground 1
System 102；Wherein, steam-driven generator system 101 and fused salt heat-storing device pass through pipeline communication；Steam-driven generator system 101 is also wrapped
Include fused salt heat exchange system.Fused salt heat exchange system is arranged on the intersection in main tunnel 4 and hoistway 3, by high-temperature melting salt pump by high temperature
Fused salt (temperature is typically at 500-600 DEG C) carries out heat exchange with the shell-and-tube heat exchanger of fused salt heat exchange system, is produced by water heating evaporation
Raw steam is used for promoting steam-driven generator to rotate generating, maybe the hot water of generation is used for heat supply.
Wherein, for the heating of fused salt, the general electricity using civil power or photovoltaic or wind energy carries out the heating to fused salt, carries out
Preliminary temperature rises, the granular fused salt being be melted into liquid, its preparative course will be carried out in low-temperature storage tank,
By heater, fused salt is tentatively heated to the preliminary temperature scope of 380-450 DEG C (temperature), then by low-temperature molten salt pump
Low-temperature molten salt is pumped in high temperature storage tank, heating further.
In the description of this specification, the description of reference term " embodiment ", " example ", " concrete example " etc. means
The specific features that describes in conjunction with this embodiment or example, structure, material are lived feature and are contained at least one of the present invention and implement
In example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.
And, the specific features of description, structure, material or feature can be to close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.Preferred embodiment is the most detailed
Describe all of details, be also not intended to the detailed description of the invention that this invention is only described.Obviously, according to the content of this specification,
Can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is to preferably explain the present invention
Principle and actual application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and four corner thereof and equivalent.
Claims (3)
1. the method storing fused salt based on Anhydrite Ore goaf, it is characterised in that comprise the steps:
The surface in a Anhydrite Ore goaf processes: the ground rubble in main tunnel (4), dust foreign material are cleaned out, then passed through
Water under high pressure carries out the cleaning on surface, and is air-dried by blower fan air blast；
The foundation of b fused salt storage warehouse: tunnel (5) inner surface in Anhydrite Ore goaf fixes one layer of thermal insulation layer (501)；Institute
State surface attachment one layer of heat preservation layer (502) of thermal insulation layer (501)；
Wherein, in the every adjacent pair in Anhydrite Ore goaf props up tunnel (5), it is fixed with fused salt heat-storing device；
The foundation of c power generating and heating device: set up steam-driven generator system (101) and heating system (102) on ground (1)；
Wherein, steam-driven generator system (101) and fused salt heat-storing device pass through pipeline communication；
D installs detection equipment: be separately installed with in main tunnel (4) and hoistway (3) temperature sensor, flammable gas alarm and
Dust detector.
A kind of method storing fused salt based on Anhydrite Ore goaf the most according to claim 1, it is characterised in that described
In the foundation of step b fused salt storage warehouse, described thermal insulation layer (501) uses high temperature insulating material；Described heat-insulation layer (502) uses to be protected
Wen Mian.
A kind of method storing fused salt based on Anhydrite Ore goaf the most according to claim 1, it is characterised in that described
In the foundation of step b fused salt storage warehouse, fused salt heat-storing device includes a bar shaped tank coordinated with a tunnel (5), in one end of tank
Pump for liquid salts is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384347.XA CN106050305B (en) | 2016-05-30 | 2016-05-30 | A method of fused salt is stored based on Anhydrite Ore goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384347.XA CN106050305B (en) | 2016-05-30 | 2016-05-30 | A method of fused salt is stored based on Anhydrite Ore goaf |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050305A true CN106050305A (en) | 2016-10-26 |
| CN106050305B CN106050305B (en) | 2018-08-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115574363A (en) * | 2022-10-11 | 2023-01-06 | 西安科技大学 | Light-wind energy development and utilization system and method based on heat storage of coal mine goaf |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106050305B (en) | 2018-08-14 |
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