CN113113087A - Temperature determination method for heat release in situ mining of lunar helium-3 resources - Google Patents
Temperature determination method for heat release in situ mining of lunar helium-3 resources Download PDFInfo
- Publication number
- CN113113087A CN113113087A CN202010698968.1A CN202010698968A CN113113087A CN 113113087 A CN113113087 A CN 113113087A CN 202010698968 A CN202010698968 A CN 202010698968A CN 113113087 A CN113113087 A CN 113113087A
- Authority
- CN
- China
- Prior art keywords
- helium
- lunar
- resource
- ilmenite
- temperature
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C10/00—Computational theoretical chemistry, i.e. ICT specially adapted for theoretical aspects of quantum chemistry, molecular mechanics, molecular dynamics or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C51/00—Apparatus for, or methods of, winning materials from extraterrestrial sources
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Abstract
The invention provides a temperature determination method for in-situ exploitation heat release of a lunar helium-3 resource, and belongs to the technical field of lunar resource exploitation. The method comprises the steps of firstly selecting ilmenite as a representative mineral for occurrence of the lunar helium-3 resource, utilizing an established physical model of the lunar mineral occurrence helium-3 resource to carry out numerical solution, establishing physical conditions of high vacuum and low gravity to meet the actual environment of the moon, analyzing evolution rules of the release amount and the release rate of the helium-3 resource in the ilmenite along with heating temperature and heating time, and finally comprehensively considering the release rate and the release amount of the helium-3 resource in lunar soil to determine the optimal heating temperature for in-situ exploitation of the lunar helium-3 resource. The method can reduce the energy consumption ratio of the moon helium-3 resource in-situ exploitation.
Description
Technical Field
The invention relates to the technical field of lunar resource exploitation, in particular to a temperature determination method for lunar helium-3 resource in-situ exploitation heat release.
Background
Due to the environmental characteristics of high vacuum and low gravity of the moon, solar wind can be directly injected into the lunar soil, so that a large amount of solar wind substances including helium-3 substances exist in the lunar soil. Helium-3 is a high-efficiency, clean and safe controllable nuclear fusion fuel, 10 tons of helium-3 can meet all energy requirements of China for one year, and meanwhile, a thermal nuclear reactor of helium-3 does not have neutrons, and the helium-3 does not generate radiation when being used as energy. The in-situ exploitation and utilization of helium-3 resources on the moon has become a research content of many countries, which can reduce the cost of deep space exploration tasks and reduce the dependence on earth resources.
Helium-3 resources exist in lunar soil minerals, content difference among different minerals is large, extraction and collection of the helium-3 resources are mainly achieved through a heating mode at present, the heating temperature is too low, helium-3 existing in lunar minerals cannot be released, cost is obviously improved due to too high heating temperature, and therefore the determination of the heat release temperature of lunar helium-3 resource in-situ mining is of great importance.
Disclosure of Invention
The invention aims to provide a method for determining the temperature of heat release during in-situ exploitation of a lunar helium-3 resource, so as to reduce the energy consumption ratio during in-situ exploitation of the lunar helium-3 resource.
The method comprises the steps of firstly, based on the mineral type of helium-3 resources existing on the moon and the existence capacity of different moon minerals for helium-3, selecting ilmenite as a representative mineral for the existence of the moon helium-3 resources, utilizing an established physical model of the moon minerals for the existence of the helium-3 resources to carry out numerical solution, establishing high-vacuum and low-gravity physical boundary conditions to meet the actual environment of the moon, analyzing the evolution law of the release amount and the release rate of the helium-3 resources in the ilmenite along with the heating temperature and the heating time, analyzing the energy consumption ratio of the moon helium-3 resources at different exploitation temperatures, and finally, synthesizing the release rate and the release amount of the helium-3 resources in the moon and the required energy consumption ratio to determine the optimal heating temperature for in-situ exploitation of the moon helium-3 resources.
The method specifically comprises the following steps:
(1) selecting ilmenite as a representative mineral for occurrence of lunar helium-3 resources for mining;
(2) constructing a physical model in the helium-3 occurrence ilmenite in two occurrence modes of crystal vacancies and atomic gaps of the ilmenite, and setting a pressure condition and a gravity condition by considering the actual physical environment on the moon;
(3) based on a physical model in the helium-3 existing ilmenite and in combination with the pressure condition and the gravity condition of the lunar environment set in the step (2), performing numerical solution on the release amount Q (T, T) of the helium-3 resource in the heating exploitation process;
(4) drawing a relation curve chart of the release amount Q and the heating temperature T, and fitting to obtain the release rate;
(5) and drawing a release rate fitting curve, and calculating the temperature of the critical point.
The factors considered in the step (1) of selecting the ilmenite as the representative mineral for the occurrence of the lunar helium-3 resource include the occurrence capacity of the ilmenite on the helium-3 resource and the content distribution of the ilmenite in the helium-3 resource enrichment region of the moon.
The crystal vacancy in the step (2) refers to ilmenite FeTiO3The crystal position of iron atom Fe, titanium atom Ti and oxygen atom O in the crystal is occupied by helium-3 atom, and the atom space refers to ilmenite FeTiO3The gaps existing among the iron atoms Fe, the titanium atoms Ti and the oxygen atoms O in the crystal.
The pressure condition in the step (2) is 10-14Atmospheric pressure of the earth, and gravity conditions are 1/6 times the gravity of the earth.
The physical model in the step (3) is a physical model in helium-3 existing ilmenite which is constructed in two existing modes of crystal vacancy and atom clearance of ilmenite.
The numerical solution in the step (3) is a numerical simulation method capable of solving the diffusion velocity of helium-3 atoms in the ilmenite, and the law of the diffusion coefficient and the temperature of helium-3 in the ilmenite under the lunar condition can be described by the following relation:
wherein D is the diffusion coefficient, m2/s，D0Is a frequency factor, EaKJ/mol, a is the characteristic diffusion length, m, R is the molar gas constant, T is the absolute temperature, K.
The diffusion coefficient and temperature law shows that the diffusion coefficient of helium-3 in lunar minerals is increased when the temperature is increased, i.e. it means that more helium-3 is released into the vacuum boundary layer and the amount of helium-3 released is increased. An increase in temperature will increase the diffusion coefficient of helium-3, indirectly resulting in an increase in the amount of moonpool helium-3 released.
In the heat release process of the in-situ exploitation of the lunar helium-3 resource in the step (4), the phenomenon of unstable release rate can occur. The unstable helium-3 release rate means that the release rate of helium-3 can change significantly at a critical point temperature during the process of extracting helium-3 by heating from low temperature to high temperature, and if higher heating energy is continuously provided after the critical point temperature, the required energy consumption ratio during the helium-3 resource exploitation process can be increased significantly.
The technical scheme of the invention has the following beneficial effects:
1. the method constructs a method system aiming at lunar helium-3 resource in-situ mining heat release, combines the occurrence, diffusion and release of helium-3 in lunar minerals, and is beneficial to the overall optimization of a helium-3 resource in-situ mining scheme;
2. the method provides a method for determining the heat release temperature of in-situ exploitation of the helium-3 resource of the moon, and the optimal exploitation temperature is determined by considering the physical conditions of high vacuum and low gravity on the moon and combining two factors of the helium-3 release rate and the release amount.
Drawings
FIG. 1 is a flow chart of the present invention for determining heat release temperature for in situ mining of lunar helium-3 resources;
FIG. 2 is a schematic representation of helium-3 in accordance with the present invention at the positions of the ilmenite crystal vacancies and interstitial spaces;
FIG. 3 is a graph showing the release of helium-3 from lunar minerals at different mining temperatures according to the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a method for determining the temperature of heat release during in-situ exploitation of a lunar helium-3 resource.
As shown in figure 1, the method comprises the steps of firstly selecting ilmenite as a representative mineral for the occurrence of the helium-3 resource of the moon based on the mineral type of the helium-3 resource occurring on the moon and the occurrence capacity of different lunar minerals on the helium-3 resource, carrying out numerical solution by utilizing an established physical model of the helium-3 resource occurring on the lunar minerals, establishing a high-vacuum and low-gravity physical boundary condition to meet the actual physical environment of the moon, analyzing the evolution law of the release amount and the release rate of the helium-3 resource in the ilmenite along with the heating temperature and the heating time, analyzing the change condition of the energy consumption ratio of the helium-3 at different mining temperatures, and finally integrating the release rate, the release amount and the energy consumption ratio of the helium-3 resource in the lunar soil to determine the optimal heating temperature for the in-situ mining of the lunar helium-3 resource.
In the specific implementation process, the steps are as follows:
in the first step, ilmenite is selected as a representative mineral for occurrence of lunar helium-3 resources for mining. The moon has lots of minerals of helium-3 resources, and generally, the content of helium-3 in ilmenite is higher.
And secondly, constructing a physical model of helium-3 existing in the ilmenite in two ways of occurrence of crystal vacancies and atomic gaps of the ilmenite, and setting pressure conditions and gravity conditions by considering the actual physical environment on the moon. The pressure condition is set to 10 atm-14The gravity condition is set to 1/6 which is the earth gravity condition. Crystal vacancy refers to ilmenite FeTiO3Iron atom Fe and titanium atom in crystalTi and oxygen atom O are occupied by helium-3 atom, and the atomic gap refers to FeTiO of ilmenite3The gaps existing among the iron atoms Fe, the titanium atoms Ti and the oxygen atoms O in the crystal. Crystal vacancies and atomic spacings are illustrated in fig. 2.
And thirdly, numerically solving the release quantity Q (T, T) in the helium-3 resource heating exploitation process based on a physical model of helium-3 existing ilmenite and considering the pressure condition and the gravity condition of the lunar environment. Wherein T is the heating temperature of the helium-3-containing lunar mineral, T is the continuous heating time, and is generally set as T0. Generally, 9 values of 300K, 500K, 700K, 900K, 1100K, 1300K, 1500K, 1700K and 1900K are respectively selected for the heating temperature T, and the release amount Q (T, T) of helium-3 resources in lunar minerals with different heating temperatures T can be obtained through numerical solution.
And fourthly, drawing a relation curve chart of the release amount Q and the heating temperature T, and fitting to obtain the release rate. As shown in FIG. 3, after the amount Q of the release exceeds 80%, the release rate of the helium-3 resource is remarkably decreased. Therefore, all data with the release quantity Q less than 80% are fitted to obtain an expression of the release rate v1, and all data with the release quantity Q greater than 80% are fitted to obtain an expression of the release rate v 2. As shown in fig. 3, the general release rates v1, v2 are expressed as follows:
and fifthly, drawing a release rate fitting curve and calculating the temperature of the critical point. Respectively drawing a release rate v1 curve and a release rate v2 curve, wherein the heating temperature T corresponding to the intersection point of the two curves is the critical point temperature Topt. As shown in FIG. 3, the critical point temperature T of the current modeloptIs 1000K.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A temperature determination method for lunar helium-3 resource in-situ mining heat release is characterized by comprising the following steps: firstly, ilmenite is selected as a representative mineral for occurrence of lunar helium-3 resources, numerical solution is carried out by utilizing an established physical model for occurrence of the lunar helium-3 resources, high-vacuum and low-gravity physical boundary conditions are established to meet the actual physical environment of the moon, the evolution rule of helium-3 resource release amount and release rate along with heating temperature and heating time in the ilmenite is analyzed, the energy consumption ratio of the helium-3 resources in the lunar mineral at different heating temperatures is analyzed, and finally two factors of the release rate and the release amount of the helium-3 resources in the lunar mineral are comprehensively considered to determine the optimal heating temperature for in-situ exploitation of the lunar helium-3 resources.
2. The method of determining temperature of lunar helium-3 resource in-situ mining heat release of claim 1, wherein: the method specifically comprises the following steps:
(1) selecting ilmenite as a representative mineral for occurrence of lunar helium-3 resources for mining;
(2) constructing a physical model in the helium-3 occurrence ilmenite in two occurrence modes of crystal vacancies and atomic gaps of the ilmenite, and setting a pressure condition and a gravity condition by considering the actual physical environment on the moon;
(3) based on a physical model in helium-3 existing ilmenite and in combination with the pressure condition and the gravity condition of the lunar environment set in the step (2), numerically solving a release amount Q (T, T) in the helium-3 resource heating exploitation process, wherein T is heating time, T is heating temperature, and the unit is K;
(4) drawing a relation curve chart of the release amount Q and the heating temperature T, and fitting to obtain the release rate;
(5) and drawing a release rate fitting curve, and calculating the temperature of the critical point.
3. The method of determining temperature of lunar helium-3 resource in-situ mining heat release of claim 2, wherein: factors considered by selecting ilmenite as a representative mineral for the occurrence of helium-3 resources on the moon in the step (1) include the occurrence capacity of ilmenite on helium-3 resources and the overall content distribution of ilmenite in a helium-3 resource enrichment region on the moon.
4. The method of determining temperature of lunar helium-3 resource in-situ mining heat release of claim 2, wherein: the pressure condition in the step (2) is 10-14Atmospheric pressure of the earth, and gravity conditions are 1/6 times the gravity of the earth.
5. The method of determining temperature of lunar helium-3 resource in-situ mining heat release of claim 2, wherein: the solving mode in the step (3) is to solve by using a microscopic numerical value.
6. The method of determining temperature of lunar helium-3 resource in-situ mining heat release of claim 2, wherein: the helium-3 resource is subjected to a diffusion process in the mineral before being released, in the diffusion process, helium-3 in the lunar mineral is firstly diffused to the surface of the mineral, after the temperature is continuously increased, the helium-3 on the surface of the lunar mineral is released to the outside, and the diffusion coefficient and the temperature rule of the helium-3 are described by an Arrhenius relationship:
wherein D is the diffusion coefficient, m2/s，D0Is a frequency factor, EaKJ/mol, a is the characteristic diffusion length, m, R is the molar gas constant, T is the absolute temperature, K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010698968.1A CN113113087A (en) | 2020-07-17 | 2020-07-17 | Temperature determination method for heat release in situ mining of lunar helium-3 resources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010698968.1A CN113113087A (en) | 2020-07-17 | 2020-07-17 | Temperature determination method for heat release in situ mining of lunar helium-3 resources |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113113087A true CN113113087A (en) | 2021-07-13 |
Family
ID=76710077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010698968.1A Pending CN113113087A (en) | 2020-07-17 | 2020-07-17 | Temperature determination method for heat release in situ mining of lunar helium-3 resources |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113113087A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486434A (en) * | 2022-01-26 | 2022-05-13 | 中国科学院地质与地球物理研究所 | Ground test device and method for extracting lunar helium-3 resource |
| CN116281898A (en) * | 2023-04-07 | 2023-06-23 | 中国矿业大学(北京) | Method and device for in-situ helium extraction by using lunar ilmenite |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355224A (en) * | 2017-09-07 | 2017-11-17 | 中国矿业大学(北京) | A kind of resource high-efficiency of ilmenite and helium 3 unifies mining system and application process |
| CN108801712A (en) * | 2018-02-27 | 2018-11-13 | 中国科学院地质与地球物理研究所 | A kind of moon original position rare gas extraction system and method |
| CN110660497A (en) * | 2019-08-22 | 2020-01-07 | 北京精密机电控制设备研究所 | Power supply system for generating power by utilizing moon in-situ energy |
-
2020
- 2020-07-17 CN CN202010698968.1A patent/CN113113087A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355224A (en) * | 2017-09-07 | 2017-11-17 | 中国矿业大学(北京) | A kind of resource high-efficiency of ilmenite and helium 3 unifies mining system and application process |
| CN108801712A (en) * | 2018-02-27 | 2018-11-13 | 中国科学院地质与地球物理研究所 | A kind of moon original position rare gas extraction system and method |
| CN110660497A (en) * | 2019-08-22 | 2020-01-07 | 北京精密机电控制设备研究所 | Power supply system for generating power by utilizing moon in-situ energy |
Non-Patent Citations (7)
| Title |
|---|
| E.BRUCE WATSON: "Diffusion in solid-Earth systems", 《ELSEVIER:EARTH AND PLANETARY SCIENCE LETTERS》 * |
| G.L.KULCINSKI 等: "The development of lunar 3He Resources-Next term applications and Long-term prospects", 《4TH INTERNATIONAL CONFERENCE ON EXPLORATION AND UTILISATION OF THE MOON》 * |
| H.BAUR 等: "Thermal release of helium, neon, and argon from lunar fines and minerals", 《PROCEEDINGS OF THE THIRD LUNAR SCIENCE CONFERENCE》 * |
| K.D.BURGESS 等: "Phase-dependent space weathering effects and spectroscopic identification of retained helium in a lunar soil grain", 《ELSEVIER: GEOCHIMICA ET COSMOCHIMICA ACTA》 * |
| KYEONG J.KIM 等: "Prospective 3He-rich landing sites on the Moon", 《ELSEVIER:PLANETARY AND SPACE SCIENCE》 * |
| 付晓辉 等: "单矿物中注入成因稀有气体的扩散", 《第十届全国月球科学与比较行星学陨石学与天体化学学术研讨会会议论文集》 * |
| 李志杰 等: "月球原位资源利用技术研究", 《国际太空》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486434A (en) * | 2022-01-26 | 2022-05-13 | 中国科学院地质与地球物理研究所 | Ground test device and method for extracting lunar helium-3 resource |
| CN116281898A (en) * | 2023-04-07 | 2023-06-23 | 中国矿业大学(北京) | Method and device for in-situ helium extraction by using lunar ilmenite |
| CN116281898B (en) * | 2023-04-07 | 2024-04-26 | 中国矿业大学(北京) | Method and device for in-situ helium extraction by using lunar ilmenite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Seredin | A new method for primary evaluation of the outlook for rare earth element ores | |
| CN113113087A (en) | Temperature determination method for heat release in situ mining of lunar helium-3 resources | |
| Hazen et al. | Evolution of uranium and thorium minerals | |
| Hubbert | Survey of world energy resources | |
| Herring | Uranium and thorium resources | |
| Gail et al. | Thermal history modelling of the L chondrite parent body | |
| Zarifi et al. | Neutronic simulation of water-based nanofluids as a coolant in VVER-1000 reactor | |
| Welsch et al. | A comparative study of medium deep borehole thermal energy storage systems using numerical modelling | |
| Banerjee et al. | Densification behaviour and sintering kinetics of ThO2–4% UO2 pellet | |
| Cui et al. | Numerical modeling of hydrothermal fluid flow in the Paleoproterozoic Thelon Basin, Nunavut, Canada | |
| Hou et al. | Beryllium oxide utilized in nuclear reactors: Part II, A systematic review of the neutron irradiation effects | |
| Gibbs | Feasibility of lateral emplacement in very deep borehole disposal of high level nuclear waste | |
| Wang et al. | Heat flow correction for the high-permeability formation: A case study for xiong’an new area | |
| Karahroudi et al. | Obtaining the neutronic and thermal hydraulic parameters of the VVER-1000 Bushehr nuclear reactor core by coupling nuclear codes | |
| Qi et al. | Meso‑Cenozoic lithospheric thermal structure and its significance in the evolution of the lithosphere in the Ordos Basin, WNCC, China | |
| Chen et al. | A new predrilling reservoir permeability prediction model and its application | |
| Shang et al. | Analytical solutions of fractal-hydro-thermal model for two-phase flow in thermal stimulation enhanced coalbed methane recovery | |
| BAO et al. | Research on heat extraction performance of U-shaped underground heat exchanger based on longitudinal layering of rock and soil | |
| Shi et al. | Numerical simulation of cyclic performance of compressed carbon dioxide energy storage system in aquifer | |
| Johnson et al. | Ancient life and plate tectonics | |
| Sears et al. | Controlled solution mining in massive salt | |
| Kun et al. | Pyrite trace element, hydrogen, oxygen, and sulfur isotope geochemistry of the Xiajiadian gold deposit in Zhashui-Shanyang orefield, south Qinling orogen, and its metallogenic constraints | |
| Cai et al. | Porosity effect on the thermal and mechanical properties of U-50Zr alloy: A molecular dynamics study | |
| Alyushin et al. | Numerical modeling of the temperature distribution in a VVER fuel element | |
| Konoplev et al. | Kinetics of the leaching of90Sr from fuel particles in soil in the near zone of the chernobyl nuclear power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210713 |