CN104833121A - Method for utilizing geothermal energy of solution in in-situ-leaching uranium mining process - Google Patents
Method for utilizing geothermal energy of solution in in-situ-leaching uranium mining process Download PDFInfo
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- CN104833121A CN104833121A CN201510241293.7A CN201510241293A CN104833121A CN 104833121 A CN104833121 A CN 104833121A CN 201510241293 A CN201510241293 A CN 201510241293A CN 104833121 A CN104833121 A CN 104833121A
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- Prior art keywords
- demineralized water
- solution
- water
- heat exchanger
- source
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- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 45
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000002386 leaching Methods 0.000 title abstract description 8
- 238000005065 mining Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000005057 refrigeration Methods 0.000 claims abstract description 10
- 238000007598 dipping method Methods 0.000 claims description 33
- 238000000605 extraction Methods 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 9
- 238000001179 sorption measurement Methods 0.000 claims description 9
- 239000002349 well water Substances 0.000 claims description 9
- 235000020681 well water Nutrition 0.000 claims description 9
- 239000006200 vaporizer Substances 0.000 claims description 7
- 238000003287 bathing Methods 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 239000003643 water by type Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 14
- 239000012530 fluid Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005341 cation exchange Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009854 hydrometallurgy Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- Y02E10/10—Geothermal energy
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- Physical Water Treatments (AREA)
Abstract
The invention provides a method for utilizing the geothermal energy of a solution in an in-situ-leaching uranium mining process. The method for utilizing the geothermal energy of the solution in the in-situ-leaching uranium mining process comprises the following steps that (a), the solution obtained in the in-situ-leaching uranium mining process enters one side of a softened water heat exchanger through a solution-side circulating pump, softened water from a water softening device enters the other side of the softened water heat exchanger, the solution is subjected to energy exchange with the softened water, the solution which is subjected to the energy exchange lowers in temperature, and is output from the softened water heat exchanger to enter a leaching liquor preparing pool, and the softened water which is subjected to the energy exchange rises in temperature, and enters one side of a heat pump unit through an evaporator-side circulating pump; (b), a target water source enters the other side of the heat pump unit through a condenser-side circulating pump, the target water source is enabled to rise in temperature by the softened water through the conduction effect of an electric current on heat in the heat pump unit, and then the softened water is circulated to return to the softened water heat exchanger. By using the method for utilizing the geothermal energy of the solution in the in-situ-leaching uranium mining process, which is provided by the invention, the geothermal energy of the solution in the in-situ-leaching uranium mining process can be recycled to be used for heating, refrigeration and the like; other facilities for the heating, the refrigeration and the like are reduced or are not constructed additionally; the comprehensive utilization of an energy source is realized.
Description
Technical field
The invention belongs to comprehensive energy utilization method, be specifically related to the development and utilization method of heat energy in a kind of ground-dipping uranium extraction process.
Background technology
Ground-dipping uranium extraction technology is injected into underground ore bed by preparation leaching agent by fluid injection boring, chemical reaction is carried out with the uranium ore under natural mode of occurence, formed containing uranium solution, be promoted to earth's surface by production well and be delivered to hydrometallurgy workshop, uranium is extracted, and after preparation, inject underground by fluid injection boring by the tail washings that ion-exchange absorption is attached, in fact form the Uranium Mining smelting process of underground water large discharge circulation.
Shallow layer geothermal energy is a kind of clean regenerative resource, generally refers in the 200m depth bounds of below earth's surface, and temperature, lower than 25 DEG C, possesses the low-temperature geothermal resource contained in shallow crust Rock And Soil and underground water of value of exploiting and utilizing.It is relatively stable that shallow layer geothermal energy has temperature, by region and climatic effect is little, widely distributed, reserves are huge, regeneration is rapid, gather feature easily.What transport from exploiting field, each well site contains the hydrometallurgy treatment plant process entering earth's surface after uranium solution is pooled to collecting tank, and leachate temperature keeps the following temperature in earth's surface 15 ~ 17 DEG C, and after leachate process, water temperature remains unchanged substantially.The main deficiency of this technique is: in ground-dipping uranium extraction process, leachate (geothermal fluid) geothermal energy is not utilized, the closed cycle of geothermal fluid large discharge only carries uranium for actual production, do not utilized in production auxiliary equipment (heating, refrigeration), also must be built necessary heating, refrigeration facility in process of production.Cause that ancillary works energy resource structure is single, energy consumption is high and have greater environmental impacts, do not possess economic rationality.
Summary of the invention
The object of the present invention is to provide the method for a kind of ground-dipping uranium extraction Process liquor geothermal energy utilization, under its management and control condition requiring increasingly stringent in energy-saving and environmental protection etc., realize the comprehensive utilization to the geothermal fluid energy in ground-dipping uranium extraction process, reduce fossil energy and use.
Realize the technical scheme of the object of the invention: the method for a kind of ground-dipping uranium extraction Process liquor geothermal energy utilization, it comprises the steps:
A solution that () ground-dipping uranium extraction process obtains enters demineralized water heat exchanger side by solution side circulating pump, and the demineralized water come from water softening device enters demineralized water heat exchanger opposite side, and this solution and demineralized water carry out energy exchange; Solution temperature after energy exchange reduces, and exports enter leachate dosing pond from demineralized water heat exchanger; Demineralized water temperature after energy exchange raises, and enters source pump side by vaporizer side circulating pump;
B () target water source enters source pump opposite side by condenser side circulating pump, in source pump, demineralized water is by the conduction of electric current to heat, heated up at target water source, then demineralized water recirculation is back to demineralized water heat exchanger, and target water source can use after heating up.
The method of a kind of ground-dipping uranium extraction Process liquor as above geothermal energy utilization, it comprises the steps:
The a solution of 15 ~ 16 DEG C that () ground-dipping uranium extraction process obtains enters demineralized water heat exchanger side by solution side circulating pump, and 9 ~ 10 DEG C of demineralized waters come from water softening device enter demineralized water heat exchanger opposite side, and this solution and demineralized water carry out energy exchange; Solution temperature after energy exchange is reduced to 9 ~ 10 DEG C, exports enter leachate dosing pond from demineralized water heat exchanger; Demineralized water temperature after energy exchange is increased to 14 ~ 15 DEG C, and enters source pump side by vaporizer side circulating pump;
B () 9 ~ 10 DEG C of target water sources enter source pump opposite side by condenser side circulating pump, in source pump, demineralized water is by the conduction of electric current to heat, target water source is warming up to 50 ~ 70 DEG C, then demineralized water recirculation is back to demineralized water heat exchanger, and target water source can use after heating up.
The method of a kind of ground-dipping uranium extraction Process liquor as above geothermal energy utilization, the target water source described in it is from elevated tank, and the water in elevated tank is from well water.
The method of a kind of ground-dipping uranium extraction Process liquor as above geothermal energy utilization, target water source described in it can be used in heating or bathing or refrigeration system after heating up.
The method of a kind of ground-dipping uranium extraction Process liquor as above geothermal energy utilization, is characterized in that: the described demineralized water entering demineralized water heat exchanger, from overhead expansion tank, enters overhead expansion tank after well water is softening by water softening device.
The method of any one ground-dipping uranium extraction Process liquor geothermal energy utilization as above, the solution that the ground-dipping uranium extraction process described in it obtains comprises adsorption tail liquid or stoste.
Effect of the present invention is: ground-dipping uranium extraction Process liquor geothermal energy utilization method of the present invention, under leachate meets production prerequisite in process of production, adsorption tail liquid or stoste geothermal energy are reclaimed and is used for heating and refrigeration etc., reduce or separately do not build the new process of other facilities such as heating and refrigeration, realize comprehensive utilization of energy, reduce production cost further.The invention solves a difficult problem for ground-dipping uranium extraction geothermal fluid ability reuse, there is good economy and reasonability.
Accompanying drawing explanation
Fig. 1 is ground-dipping uranium extraction Process liquor geothermal energy utilization method technique journey figure of the present invention;
In figure: 1, water softening device; 2, overhead expansion tank; 3, elevated tank; 4, condenser side circulating pump; 5, source pump; 6, solution side circulating pump; 7, vaporizer side circulating pump; 8, demineralized water heat exchanger.
Detailed description of the invention
Be further described below in conjunction with the method for the drawings and specific embodiments to a kind of ground-dipping uranium extraction Process liquor of the present invention geothermal energy utilization.
Embodiment 1
As shown in Figure 1, the method for a kind of ground-dipping uranium extraction Process liquor of the present invention geothermal energy utilization, it comprises the steps:
The a adsorption tail liquid (or stoste) of 15 DEG C that () ground-dipping uranium extraction process obtains enters demineralized water heat exchanger 8 side by solution side circulating pump 6, the demineralized water of 10 DEG C come from water softening device enters demineralized water heat exchanger 8 opposite side, and adsorption tail liquid (or stoste) and demineralized water carry out energy exchange; Adsorption tail liquid (or stoste) temperature after energy exchange is reduced to 10 DEG C, exports enter leachate dosing pond (leachate treatment plant) from demineralized water heat exchanger 8; Demineralized water temperature after energy exchange rises to 14 DEG C, and enters source pump 5 side by vaporizer side circulating pump 7;
B the target water source of () 10 DEG C enters source pump 5 opposite side by condenser side circulating pump 4, in source pump 5, demineralized water is by the conduction of electric current to heat, target water source is warming up to 50 DEG C, then demineralized water recirculation is back to demineralized water heat exchanger 8, and target water source can use after heating up.
Above-mentioned target water source is from elevated tank 3, and the water in elevated tank 3 is from well water.Target water source can be used in heating or bathing or refrigeration system after heating up.
The above-mentioned demineralized water entering demineralized water heat exchanger 8, from overhead expansion tank 2, enters overhead expansion tank 2 after well water is softening by water softening device 1.Described water softening device comprises water filter, dissolved salt groove, cation exchange unit, is prior art.
Common well water as thermal source by ground-dipping uranium extraction geothermal fluid, is heated up, solves the utilization of resources and an energy-conservation difficult problem, have good economy and reasonability by the inventive method.
Embodiment 2
As shown in Figure 1, the method for a kind of ground-dipping uranium extraction Process liquor of the present invention geothermal energy utilization, it comprises the steps:
The a adsorption tail liquid (stoste) of 16 DEG C that () ground-dipping uranium extraction process obtains enters demineralized water heat exchanger 8 side by solution side circulating pump 6, the demineralized water of 9 DEG C come from water softening device enters demineralized water heat exchanger 8 opposite side, and adsorption tail liquid (stoste) and demineralized water carry out energy exchange; Adsorption tail liquid (stoste) temperature after energy exchange is reduced to 9 DEG C, exports enter leachate dosing pond from demineralized water heat exchanger 8, by injecting fluid injection boring after topping-up pump pressurization; Demineralized water temperature after energy exchange rises to 15 DEG C, and enters source pump 5 side by vaporizer side circulating pump 7;
B the target water source of () 9 DEG C enters source pump 5 opposite side by condenser side circulating pump 4, in source pump 5, demineralized water is by the conduction of electric current to heat, target water source is warming up to 50 ~ 70 DEG C (such as: 50 DEG C, 60 DEG C or 70 DEG C), then demineralized water recirculation is back to demineralized water heat exchanger 8, and target water source can use after heating up.
Above-mentioned target water source is from elevated tank 3, and the water in elevated tank 3 is from well water.Target water source can be used in heating or bathing or refrigeration system after heating up.
The above-mentioned demineralized water entering demineralized water heat exchanger 8, from overhead expansion tank 2, enters overhead expansion tank 2 after well water is softening by water softening device 1.Described water softening device comprises water filter, dissolved salt groove, cation exchange unit, is prior art.
Claims (6)
1. a method for ground-dipping uranium extraction Process liquor geothermal energy utilization, is characterized in that: the method comprises the steps:
A solution that () ground-dipping uranium extraction process obtains enters demineralized water heat exchanger (8) side by solution side circulating pump (6), the demineralized water come from water softening device enters demineralized water heat exchanger (8) opposite side, and this solution and demineralized water carry out energy exchange; Solution temperature after energy exchange reduces, and exports enter leachate dosing pond from demineralized water heat exchanger (8); Demineralized water temperature after energy exchange raises, and enters source pump (5) side by vaporizer side circulating pump (7);
B () target water source enters source pump (5) opposite side by condenser side circulating pump (4), in source pump (5), demineralized water is by the conduction of electric current to heat, target water source is heated up, then demineralized water recirculation is back to demineralized water heat exchanger (8), and target water source can use after heating up.
2. the method for a kind of ground-dipping uranium extraction Process liquor according to claim 1 geothermal energy utilization, is characterized in that: the method comprises the steps:
The a solution of 15 ~ 16 DEG C that () ground-dipping uranium extraction process obtains enters demineralized water heat exchanger (8) side by solution side circulating pump (6), 9 ~ 10 DEG C of demineralized waters come from water softening device enter demineralized water heat exchanger (8) opposite side, and this solution and demineralized water carry out energy exchange; Solution temperature after energy exchange is reduced to 9 ~ 10 DEG C, exports enter leachate dosing pond from demineralized water heat exchanger (8); Demineralized water temperature after energy exchange is increased to 14 ~ 15 DEG C, and enters source pump (5) side by vaporizer side circulating pump (7);
B () 9 ~ 10 DEG C of target water sources enter source pump (5) opposite side by condenser side circulating pump (4), in source pump (5), demineralized water is by the conduction of electric current to heat, target water source is warming up to 50 ~ 70 DEG C, then demineralized water recirculation is back to demineralized water heat exchanger (8), and target water source can use after heating up.
3. the method for a kind of ground-dipping uranium extraction Process liquor according to claim 1 geothermal energy utilization, is characterized in that: described target water source is from elevated tank (3), and the water in elevated tank (3) is from well water.
4. the method for a kind of ground-dipping uranium extraction Process liquor according to claim 1 geothermal energy utilization, is characterized in that: described target water source can be used in heating or bathing or refrigeration system after heating up.
5. the method for a kind of ground-dipping uranium extraction Process liquor according to claim 1 geothermal energy utilization, it is characterized in that: the described demineralized water entering demineralized water heat exchanger (8), from overhead expansion tank (2), enters overhead expansion tank (2) after well water is softening by water softening device (1).
6. according to the method for any one ground-dipping uranium extraction Process liquor geothermal energy utilization described in claim 1 to 5, it is characterized in that: the solution that described ground-dipping uranium extraction process obtains comprises adsorption tail liquid or stoste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241293.7A CN104833121A (en) | 2015-05-13 | 2015-05-13 | Method for utilizing geothermal energy of solution in in-situ-leaching uranium mining process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510241293.7A CN104833121A (en) | 2015-05-13 | 2015-05-13 | Method for utilizing geothermal energy of solution in in-situ-leaching uranium mining process |
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| CN201510241293.7A Pending CN104833121A (en) | 2015-05-13 | 2015-05-13 | Method for utilizing geothermal energy of solution in in-situ-leaching uranium mining process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251748A (en) * | 2020-09-21 | 2022-03-29 | 中核兰州铀浓缩有限公司 | Centrifugal cascade hall air conditioner heating system and method |
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