CN101109278A - Thermosol recovery method with three-tube oil pad tube-cutting method for sylvite mine - Google Patents
Thermosol recovery method with three-tube oil pad tube-cutting method for sylvite mine Download PDFInfo
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- CN101109278A CN101109278A CNA2007100659358A CN200710065935A CN101109278A CN 101109278 A CN101109278 A CN 101109278A CN A2007100659358 A CNA2007100659358 A CN A2007100659358A CN 200710065935 A CN200710065935 A CN 200710065935A CN 101109278 A CN101109278 A CN 101109278A
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Abstract
A thermo salvation extracting method for potash salt deposit through a 3-pipe oil-pad pipe-cutting way is provided. In the invention, for solving the ores, some fresh water in a circulating pond is pumped into a heat exchanger and heated, used as a solving and soaking liquid in temperature 60-110 centigrade; the liquid is injected into the ore body through a well-injecting pump to dissolve and soak the ore body; meanwhile, isolating oil is injected into the ore body by an oil-injecting pump through an oil groove; then some dissolving and soaking brine is injected into an oil separator through an injecting and pumping device, the light brine goes through oil-water separation by an oil-water separator, and the oil returns directly into the oil groove; the light brine returns to the circulating pond. The invention integrates the advantages of ordinary oil-pad method and that of single-well pipe-cutting way, has the obvious advantages of the simple process and operation, no polluting emissions, and the high content of potassium chloride.
Description
Technical field: the invention belongs to salt chemical engineering and potassium chloride fertilizer technical field of producing.
Background technology: in salt chemical engineering is produced, mainly adopt the salt pan multiple halogen methods of adopting such as method, the water-soluble method of chamber, common lubricating pad method, individual well pipe cutting method, butt shaft method of evaporating brine.The salt pan fado of evaporating brine is used for the production of sodium chloride, seawater or salt lake saline is introduced large tracts of land shine the salt pan, utilizes nature sunlight that water evaporates is improved concentration.When concentration reaches when necessarily requiring, with adopting the salt ship with the solid extraction, remove impurity after dry packing get final product.Carnallite is also wanted the combined flotation technology in producing.The salt pan fado of evaporating brine is used for the production of sodium chloride, seawater or salt lake saline is introduced large tracts of land shine the salt pan, utilizes nature sunlight that water evaporates is improved concentration.When concentration reaches when necessarily requiring, with adopting the salt ship with the solid extraction, remove impurity after dry packing get final product.Carnallite is also wanted the combined flotation technology in producing.
Common lubricating pad method is exactly three pipe lubricating pad methods.Fresh water injects between the pipe of centre, draws bittern from central tube.Outer endless tube uses as adding the lubricating pad layer, the last molten speed of control ore body.
The individual well pipe cutting method is that to adopt the length of pipe cutting to control on the salt deposit molten, has saved the expense that adds the lubricating pad layer.One pipe injects fresh water, and a pipe is drawn bittern.Simple in structure, but may take place irregular molten.
The present invention has gathered the advantage of common lubricating pad method and individual well pipe cutting method, mainly is on form of structure.The key point of invention is that what " leaching solution is heated " injected the down-hole is leaching solution, rather than fresh water.Molten ore deposit process is selectively, and how molten useful components is, otiose stay as far as possible underground.
Except that evaporating brine in the salt pan, additive method all is that the sodium chloride salt ore all is dissolved in the bittern, and the bittern that obtains just can access qualified sodium chloride product through impurity screening, vacuum evaporation.Because the solution mining of carnallite beyond example, the chemical compound more complicated of carnallite in addition will be with the dissolving as much as possible of the potassium chloride in the carnallite, and the existing halogen method of adopting all is difficult to meet the demands.
Summary of the invention: purpose of the present invention just in order to overcome the weak point that above-mentioned existing sylvite ore production technology exists, and provides a kind of sylvite ore three pipe lubricating pad pipe cutting method thermal melting producing methods.
Purpose of the present invention is achieved by the following technical solution.
Fresh water is through pumping into the heat exchanger heating as leaching solution in the molten ore deposit employing of the present invention circulatory pool, and the temperature of leaching solution is 60～110 ℃, leaching solution is adopted inject and aspirator injection down-hole ore body, and ore body is carried out molten soaking; Simultaneously, adopt injection to inject to ore body and isolate oil with aspirator; Adopting then to inject is evacuated to the molten bittern that soaks aboveground with aspirator; Light halogen carries out water-oil separating through oil water separator, and oil directly returns oil groove; Light halogen returns in the circulatory pool; Leaching solution of the present invention add thermal recovery heat exchanger indirect heating, the vapor (steam) temperature of heating is 120～150 ℃; Injection of the present invention and aspirator be, adopts the pipe of three different tube diameters to be nested with one heart, and three sleeve pipes are respectively central tube, oil ring pipe and protective casing from inside to outside; The pipeline of central tube is connected with lift pump, as going out the halogen pipe; The oil ring pipe is connected with the notes well pump with the annular space of central tube, and as the leaching solution injection channel, the annular space of protective casing and oil ring pipe is connected with oil pump, as isolating oily injection channel.
The invention has the beneficial effects as follows, the advantage of having gathered common lubricating pad method and individual well pipe cutting method, and according to the difference of the solubility of different chemical component under different temperatures in the carnallite, leaching solution is heated, immersion liquid adds thermal recovery heat exchanger indirect heating, adopt molten the soaking of normal temperature fresh water, the content of useful constituent potassium chloride is generally 3～5%; Add that temperature selective is molten to be soaked, the content of useful constituent potassium chloride can be increased to 6～8%.It is higher relatively to contain potassium chloride in the bittern that obtains.Injecting isolation oil is in order to protect the upper strata ore body, molten speed in the control; And in a planned way adopt the method for pipe cutting, move on the position with the lubricating pad layer, to reach the purpose in molten ore deposit.Pipe cutting is to adopt pipe cutter to put into the down-hole, by the cutter that rotates the pipe cutter periphery outer protective casing is cut off, and reaches and isolates the purpose of moving on the oil reservoir.The length of each pipe cutting is generally 2～5 meters, calculates according to theory and determines.The purpose of thermosol of heating is exactly in order to improve the KCE content in the bittern.The remarkable advantage of the invention is that technological operation is simple, the non-pollution discharge thing, and improved the content of potassium chloride effectively.
Further set forth content of the present invention below in conjunction with drawings and Examples.
Description of drawings: Fig. 1 is the particular flow sheet of technology of the present invention;
Fig. 2 is for injecting and aspirator sleeve structure schematic diagram.
The specific embodiment:
See Fig. 1, Fig. 2, build during the groove, in circulatory pool, inject fresh water earlier as mother liquor, with the leaching solution lift pump fresh water being delivered to the leaching solution heater heats, leaching solution adds thermal recovery heat exchanger indirect heating, vapor (steam) temperature is 120～150 ℃, and the heating-up temperature of leaching solution is 6～110 ℃, and these two kinds of temperature can cooperate arbitrarily in limited range; And then annotate well pump with leaching solution and will heat later fresh water injection down-hole; The light halogen in down-hole returns the face of land 10 under the pressure of annotating well pump bittern carries out water-oil separating through oil water separator, and oil directly returns oil groove; Light halogen returns in the circulatory pool, and constantly circulation improves concentration.Along with building groove process forward impelling, underground molten chamber 8 constantly enlarges, and bittern 7 concentration in the circulatory pool improve constantly.When bittern 7 concentration reached certain numerical value, the molten speed of soaking reduced, and changed fresh water and carried out the circulation second time, and is enough big until molten chamber.
Adopt during the halogen, take in a planned way pipe cutting, move the height of lubricating pad layer on constantly, make that molten chamber 8 is up molten gradually soaks expansion, obtain needed bittern; Part water-insoluble impurity 9 natural subsidence are to bottom, molten chamber.Bittern is sent to Crystallization Procedure through dashpot with halogen transmitting pump; Along with the continuous increase of extraction bittern, take in a planned way pipe cutting, move the height of lubricating pad layer on constantly, make that molten chamber is up molten gradually soaks expansion, part water-insoluble natural subsidence is to bottom, molten chamber, until having adopted the ore bed part.
Injection is a sleeve structure with aspirator, sees Fig. 2, adopts the pipe of three different tube diameters to be nested with one heart, has annular space between the tube and tube; Three sleeve pipes are respectively central tube 1, oil ring pipe 2 and protective casing 3 from inside to outside; The pipeline 4 of central tube 1 is connected with lift pump, as bittern 7 go out the halogen pipe, put on the bittern that comes and be sent to through bittern outlet 12 and adopt defeated halogen operation; The oil ring pipe is connected with the notes well pump with the annular space 5 of central tube, and as the leaching solution injection channel, the leaching solution of leaching solution inlet 13 comes from adopting defeated halogen operation; The annular space 6 of protective casing 3 and oil ring pipe 2 is connected with oil pump, as isolating oily injection channel, isolates oil and adopts diesel oil, and diesel oil comes from adopting defeated halogen operation through isolating oil-in 14.The isolation oil oil reservoir 11 that injects is in order to protect the upper strata ore body, molten speed in the control; And in a planned way adopt the method for pipe cutting, move on the position with oil reservoir 11, to reach the purpose of molten mining.Pipe cutting is to adopt pipe cutter to put into the down-hole, by the cutter that rotates the pipe cutter periphery outer protective casing is cut off, and reaches and isolates the purpose of moving on the oil reservoir.The length of each pipe cutting is generally 2～5 meters, calculates according to theory and determines.The purpose of thermosol of heating is exactly in order to improve the KCE content in the bittern.In order to prevent to stop up situation such as leakages, present embodiment is sleeve pipe of many covers on three sleeve pipe bases also, forms four sleeve pipes, allows an annular space of vacating 15 be connected with standby mouth 16 on the ground surface, prepares against use.
Claims (3)
1. sylvite ore three is managed lubricating pad pipe cutting method thermal melting producing methods, it is characterized in that fresh water is through pumping into the heat exchanger heating as leaching solution in the molten ore deposit employing circulatory pool, the temperature of leaching solution is 60～110 ℃, adopt the notes well pump to inject the down-hole ore body leaching solution, ore body is carried out molten soaking; Simultaneously, adopt filling pump to inject by oil groove and isolate oil to ore body; Adopt then to inject with aspirator the molten bittern that soaks is delivered to oil eliminator, light halogen carries out water-oil separating through oil water separator, and oil directly returns oil groove; Light halogen returns in the circulatory pool.
2. sylvite ore three pipe lubricating pad pipe cutting method thermal melting producing methods according to claim 1 is characterized in that to the heat exchanger of leaching solution heating, the vapor (steam) temperature of its heating is 120～150 ℃.
3. sylvite ore three pipe lubricating pad pipe cutting method thermal melting producing methods according to claim 1, it is characterized in that, described injection and aspirator are a sleeve structure, adopt the pipe of three different tube diameters to be nested with one heart, three sleeve pipes are respectively central tube (1), oil ring pipe (2) and protective casing (3) from inside to outside; The pipeline (4) of central tube (1) is connected with a lift pump, as going out the halogen pipe; The oil ring pipe is connected with the notes well pump with the annular space (5) of central tube, and as the leaching solution injection channel, the annular space (6) of protective casing and oil ring pipe is connected with filling pump, as isolating oily injection channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100659358A CN101109278A (en) | 2007-06-05 | 2007-06-05 | Thermosol recovery method with three-tube oil pad tube-cutting method for sylvite mine |
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| CNA2007100659358A CN101109278A (en) | 2007-06-05 | 2007-06-05 | Thermosol recovery method with three-tube oil pad tube-cutting method for sylvite mine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337879A (en) * | 2011-09-13 | 2012-02-01 | 四川久大制盐有限责任公司 | Salt mine drilling solution mining device and method |
| CN102587979A (en) * | 2012-01-19 | 2012-07-18 | 湖北双环科技股份有限公司 | Method for treating salty mud generated in rock salt solution mining sodium sulfate type brine purification |
| CN107939444A (en) * | 2017-12-11 | 2018-04-20 | 中盐金坛盐化有限责任公司 | A kind of casing programme and installation and application that chamber is made for salt hole air reserved storeroom |
| CN108180040A (en) * | 2017-12-11 | 2018-06-19 | 中盐金坛盐化有限责任公司 | A kind of salt hole air reserved storeroom dual string makes cavity method |
| CN109306861A (en) * | 2018-09-26 | 2019-02-05 | 中国石油化工股份有限公司 | A kind of molten intracavitary orientation of salt well promotes the method and equipment of exploitation |
| CN110159244A (en) * | 2019-05-10 | 2019-08-23 | 刘森林 | Sylvite ore solution mining method |
| CN111533138A (en) * | 2020-05-06 | 2020-08-14 | 中国科学院青海盐湖研究所 | Method for preparing potassium chloride by utilizing carnallite |
-
2007
- 2007-06-05 CN CNA2007100659358A patent/CN101109278A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337879A (en) * | 2011-09-13 | 2012-02-01 | 四川久大制盐有限责任公司 | Salt mine drilling solution mining device and method |
| CN102587979A (en) * | 2012-01-19 | 2012-07-18 | 湖北双环科技股份有限公司 | Method for treating salty mud generated in rock salt solution mining sodium sulfate type brine purification |
| CN107939444A (en) * | 2017-12-11 | 2018-04-20 | 中盐金坛盐化有限责任公司 | A kind of casing programme and installation and application that chamber is made for salt hole air reserved storeroom |
| CN108180040A (en) * | 2017-12-11 | 2018-06-19 | 中盐金坛盐化有限责任公司 | A kind of salt hole air reserved storeroom dual string makes cavity method |
| CN109306861A (en) * | 2018-09-26 | 2019-02-05 | 中国石油化工股份有限公司 | A kind of molten intracavitary orientation of salt well promotes the method and equipment of exploitation |
| CN109306861B (en) * | 2018-09-26 | 2020-10-13 | 中国石油化工股份有限公司 | Method and equipment for directionally propelling exploitation in salt well dissolving cavity |
| CN110159244A (en) * | 2019-05-10 | 2019-08-23 | 刘森林 | Sylvite ore solution mining method |
| CN111533138A (en) * | 2020-05-06 | 2020-08-14 | 中国科学院青海盐湖研究所 | Method for preparing potassium chloride by utilizing carnallite |
| CN111533138B (en) * | 2020-05-06 | 2022-08-26 | 中国科学院青海盐湖研究所 | Method for preparing potassium chloride by utilizing carnallite |
| US11851340B2 (en) | 2020-05-06 | 2023-12-26 | Qinghai Institute Of Salt Lakes, Chinese Academy Of Sciences | Method for preparing potassium chloride from carnallite |
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