CN108217693B - Salt field technology for separating components by using temperature difference - Google Patents
Salt field technology for separating components by using temperature difference Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/06—Preparation by working up brines; seawater or spent lyes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/12—Preparation of double sulfates of magnesium with sodium or potassium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/24—Chlorides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/26—Magnesium halides
- C01F5/30—Chlorides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/40—Magnesium sulfates
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Abstract
The invention relates to the technical field of salt lake chemical engineering in inorganic chemical industry, and discloses a salt field technology for separating components by using temperature difference, which comprises a temperature difference salt field and a storage pool, wherein a system water inlet is formed in one side of the temperature difference salt field, a water outlet is formed in one side of the temperature difference salt field, which is far away from the system water inlet, the water outlet is communicated with the storage pool, a pump pool is arranged in the storage pool, a water pump communicated with the temperature difference salt field is arranged in the pump pool, and a system water outlet is formed in one side of the storage pool. According to the saltern technology and application of the components separated by the temperature difference, a proper amount of fresh water can be added into hot solution after solid separation, relatively pure solid is separated out in the cooling process, further purification of the solid is facilitated, and the relatively pure solid paves the way for manufacturing other salts (such as potassium sulfate manufactured by high-quality picromerite, potassium chloride and magnesium metal manufactured by high-purity halonite in a saltern, and potassium sulfate manufactured by high-purity magnesium sulfate heptahydrate).
Description
Technical Field
The invention relates to the technical field of salt lake chemical engineering in inorganic chemical engineering, in particular to a salt field technology for separating components by using temperature difference.
Background
The salt refers to a compound formed by combining a metal ion or an ammonium ion (NH4+) with an acid radical ion or a nonmetal ion. Such as sodium chloride, calcium nitrate, ferrous sulfate, ammonium acetate, etc., such as calcium sulfate, copper chloride, sodium acetate, and generally salts are the products of metathesis reactions, the salts react with salts to form new salts and new salts, the salts react with bases to form new salts and new bases, the salts react with acids to form new salts and new acids, such as sulfuric acid and sodium hydroxide to form sodium sulfate and water, and the sodium chloride reacts with silver nitrate to form silver chloride and sodium nitrate, etc. There are also other reactions that can form salts, such as displacement reactions. Solutions of soluble salts are electrically conductive because of the free mobile ions in the solution, which act as electrolytes. Hydrochloric acid is an important product in salt chemical engineering and an important raw material for producing silicon materials, and salt is one of crystals.
The invention patent CN102745722A discloses a novel three-proofing salt pan which can be used in arid areas with less rainfall and can evaporate crystallization mother liquor by using salt pan technology in areas with more rainfall. The technology of the invention adopts an effective anti-leakage technology to ensure that the mother liquor does not leak, which is more beneficial to environmental protection. The effective pressure-proof technology can greatly improve the working efficiency by utilizing the mechanized operation of large-scale equipment. Thereby realizing the effective effects of seepage prevention, pressure prevention and rain prevention, and solving the substantive problem of the salt pan.
The salt pan is an important place required by salt production, and at present, the salt pan on a salt lake is used for solarizing the existing simple salt pan: the method is characterized in that solarization is utilized to enable target minerals of salt lake brine to be saturated from unsaturated, then the target minerals are separated out, the target minerals are recycled, the impurity content of the target minerals is solarized in a simple salt field from the aspect of target mineral purity, the subsequent processing difficulty is high, the salt field utilization season is utilized, the simple salt field only utilizes part of spring festival, and in the whole summer, part of autumn solarization and evaporation are not utilized in winter, so that the efficiency of the salt field is to be improved.
Disclosure of Invention
Technical problem to be solved
In order to overcome the defects in the prior art, the invention provides a saline field technology for separating components by using temperature difference, which solves the problems.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the salt pan technology utilizing the temperature difference separation components comprises a temperature difference salt pan and a storage pool, wherein a system water inlet is formed in one side of the temperature difference salt pan, a water drain is formed in one side, away from the system water inlet, of the temperature difference salt pan, the water drain is communicated with the storage pool, a pump pool is arranged inside the storage pool, a water pump communicated with the temperature difference salt pan is arranged inside the pump pool, and a system water outlet is formed in one side of the storage pool.
Preferably, the position of the temperature difference salt pan, which is located at the water outlet, is provided with an outer filter screen, a built-in water drain valve is arranged inside the outer filter screen, an inner layer water drain pipe is arranged inside the water outlet, and one end, which is located inside the temperature difference salt pan, of the inner layer water drain pipe is provided with a wooden plug.
Preferably, the size of the temperature difference salt pan is the same as that of the reservoir.
An application method of a salt field technology for separating components by using temperature difference comprises the following steps:
1) the volume of the temperature difference salt pan is the same as that of the storage pool (the storage pool can contain brine of all the temperature difference salt pans).
2) The temperature difference salt field needs to be hardened at the bottom of the pool (beneficial to mechanical operation), and the salt field is prevented from leaking (loss is prevented). Material recommendation refers to hydroelectric dam cement) work, and the reservoir needs to do salt pan anti-leakage work.
3) The water inlet of the system is a brine inlet which needs to be subjected to temperature difference crystallization, and the water outlet of the system is a brine outlet which needs to be subjected to other operations (such as returning to a salt pan and then continuing to evaporate to prepare saturated mother liquor in the common salt pan if the temperature difference crystallization is finished).
4) The brine imported from the system is required to be sunned to be saturated and higher-temperature brine, and two operation suggestions are provided for the operation, namely firstly, the brine is used for solarizing in a light sunning method, and secondly, a certain amount of target crystalline salt is required to exist in the pre-sunning pool (if a temperature difference salt field is required to produce magnesium sulfate heptahydrate (epsomite), the pre-sunning pool is sunned in a light sunning mode (the higher-temperature brine can be collected), and on the other hand, a certain amount of magnesium sulfate heptahydrate (epsomite) always exists in the pre-sunning pool, and the magnesium sulfate heptahydrate in the pre-sunning pool cannot disappear for any reason (the brine is ensured to be saturated relative to.
5) The water outlet is the lowest part of the temperature difference salt field, and brine is collected in a small ditch on the ground.
6) The water outlet is composed of an outer layer filter, an inner layer water outlet pipe for discharging water and an inner layer water outlet valve for discharging water, the whole brine is required to be discharged in two hours, if the number of the water outlets is small, the water outlets are additionally arranged according to the water outlet schematic diagram, so that the whole brine is completely discharged in two hours.
7) The pump pond is the lower piece of reservoir, guarantees that the pump extracts reservoir brine totally, and whole reservoir brine requires two hour inner disposals totally.
8) Measuring the specific evaporation coefficient of the brine, and calculating the area and the volume required by the matching of the temperature difference salt field and the actual salt field.
9) If the difference between the tail of the temperature difference salt pan and the tail of the storage pool is large, the brine discharge is considered during design, so that the scouring is not caused to influence the service life of the salt pan.
Preferably, the operating method for the manufacture of high purity salt is as follows:
1) the operation of the temperature difference salt field is that when the temperature is higher every day (about 14-16 pm), saturated brine is pumped out from the pre-sunning pool, and is put into the temperature difference salt field (within two hours) after adding little fresh water, and when the temperature is lowest at night (about 2-4 pm), cooled brine (brine after crystallization) is put into a storage pool (within two hours).
2) If the saturation degree of the solarized brine is not enough, the solarized brine is heated together with the solid containing saturated salt before entering the salt pan, the solid precipitate is separated, the saturated liquid reaches the expected saturation degree, and then the operation 2 is repeated.
3) The saturated brine in summer can be added with fresh water to manufacture a suitable product in a suitable season in autumn and winter, and the temperature difference salt field and the plastic greenhouse can be taken into consideration in order to improve the controllability of the temperature difference salt field.
4) In autumn and winter, the original brine (saturated brine) collected by the brine collecting channel can be frozen in winter to separate out solid, and the frozen brine is separated out.
5) The method can also be used for the solar production and the refining of the soluble salt produced in the non-salt lake, and the temperature difference salt field can be considered, so that the salt lake is produced and leaves the salt lake area.
(III) advantageous effects
Compared with the prior art, the invention provides a saline field technology for separating components by using temperature difference and application thereof, and has the following beneficial effects:
1. this utilize difference in temperature separation component's salt pan technique and application can utilize morning and evening difference in temperature (or winter and summer difference in temperature), and the difference in temperature salt pan combines to use with traditional solarization salt pan, and when cooling (freezing) separated solid salinity, salt content reduces relatively in the brine, can realize continuing the evaporation, and microelement realizes continuing the enrichment in the brine.
2. According to the saltern technology and application of the components separated by the temperature difference, a proper amount of fresh water can be added into hot solution after solid separation, relatively pure solid is separated out in the cooling process, further purification of the solid is facilitated, and the relatively pure solid paves the way for manufacturing other salts (such as potassium sulfate manufactured by high-quality picromerite, potassium chloride and magnesium metal manufactured by high-purity halonite in a saltern, and potassium sulfate manufactured by high-purity magnesium sulfate heptahydrate).
3. The salt field technology for separating components by utilizing temperature difference and the application thereof utilize the technology to prepare pure calcium chloride hexahydrate by taking calcium chloride-magnesium chloride mother liquor as a raw material, and the pure calcium chloride hexahydrate is directly dried to obtain a high-grade anhydrous calcium chloride (higher than the national standard) product.
4. The salt field technology and the application thereof can be still used for manufacturing high-quality epsomite, high-quality carnallite, high-quality bischofite, high-quality mirabilite decahydrate (used for processing high-quality anhydrous sodium sulphate) and other products in salt lakes.
Drawings
FIG. 1 is a schematic diagram of a saline field technology and application structure for separating components by using temperature difference according to the present invention;
FIG. 2 is a schematic diagram of a saline field technology for separating components by using temperature difference and a structure of a water outlet according to the present invention;
FIG. 3 is a schematic diagram of a side view of a brine field technology for separating components by using temperature difference and an inner layer water discharge pipe.
In the figure: 1 temperature difference salt field, 2 storage pools, 3 system water inlets, 4 water discharge ports, 5 pump pools, 6 water pumps, 7 system water outlets, 8 outer-layer filter screens, 9 water discharge valves, 10 inner-layer water discharge pipes and 11 wooden plugs.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a salt pan technology for separating components by using temperature difference includes a temperature difference salt pan 1 and a reservoir 2, the size of the temperature difference salt pan 1 is the same as that of the reservoir 2, a system water inlet 3 is arranged on one side of the temperature difference salt pan 1, a water outlet 4 is arranged on one side of the temperature difference salt pan 1 far away from the system water inlet 3, the water outlet 4 is communicated with the storage tank 2, a pump tank 5 is arranged inside the storage tank 2, a water pump 6 communicated with the temperature difference salt pan 1 is arranged inside the pump tank 5, a system water outlet 7 is arranged on one side of the reservoir 2, an outer layer filter screen 8 is arranged at the position of the temperature difference salt pan 1 at the water outlet 4, a built-in water drain valve 9 is arranged inside the outer layer filter screen 8, an inner layer water drain pipe 10 is arranged inside the water drain outlet 4, and a wooden plug 11 is arranged at one end of the inner layer water drain pipe 10, which is positioned inside the temperature difference salt pan 1.
An application method of a salt field technology for separating components by using temperature difference comprises the following steps:
1) the volume of the temperature difference salt pan is the same as that of the storage pool (the storage pool can contain brine of all the temperature difference salt pans).
2) The temperature difference salt field needs to be hardened at the bottom of the pool (beneficial to mechanical operation), and the salt field is prevented from leaking (loss is prevented). Material recommendation refers to hydroelectric dam cement) work, and the reservoir needs to do salt pan anti-leakage work.
3) The water inlet of the system is a brine inlet which needs to be subjected to temperature difference crystallization, and the water outlet of the system is a brine outlet which needs to be subjected to other operations (such as returning to a salt pan and then continuing to evaporate to prepare saturated mother liquor in the common salt pan if the temperature difference crystallization is finished).
4) The brine imported from the system is required to be sunned to be saturated and higher-temperature brine, and two operation suggestions are provided for the operation, namely firstly, the brine is used for solarizing in a light sunning method, and secondly, a certain amount of target crystalline salt is required to exist in the pre-sunning pool (if a temperature difference salt field is required to produce magnesium sulfate heptahydrate (epsomite), the pre-sunning pool is sunned in a light sunning mode (the higher-temperature brine can be collected), and on the other hand, a certain amount of magnesium sulfate heptahydrate (epsomite) always exists in the pre-sunning pool, and the magnesium sulfate heptahydrate in the pre-sunning pool cannot disappear for any reason (the brine is ensured to be saturated relative to.
5) The water outlet is the lowest part of the temperature difference salt field, and brine is collected in a small ditch on the ground.
6) The water outlet consists of an outer layer filter, an inner layer water outlet pipe for discharging water and an inner layer water outlet valve for discharging water. The whole pool of brine is required to be completely discharged in two hours, and if the number of the water discharge ports is small, the water discharge ports are additionally arranged according to the water discharge port schematic diagram, so that the whole pool of brine is completely discharged in two hours.
7) The pump pond is the lower piece of reservoir, guarantees that the pump extracts reservoir brine totally, and whole reservoir brine requires two hour inner disposals totally.
8) Measuring the specific evaporation coefficient of the brine, and calculating the area and the volume required by the matching of the temperature difference salt field and the actual salt field.
9) If the difference between the tail of the temperature difference salt pan and the tail of the storage pool is large, the brine discharge is considered during design, so that the scouring is not caused to influence the service life of the salt pan.
The operating method for the manufacture of high purity salt is as follows:
1) the operation of the temperature difference salt field is that when the temperature is higher every day (about 14-16 pm), saturated brine is pumped out from the pre-sunning pool, and is put into the temperature difference salt field (within two hours) after adding little fresh water, and when the temperature is lowest at night (about 2-4 pm), cooled brine (brine after crystallization) is put into a storage pool (within two hours).
2) If the saturation degree of the solarized brine is not enough, the solarized brine is heated together with the solid containing saturated salt before entering the salt pan, the solid precipitate is separated, the saturated liquid reaches the expected saturation degree, and then the operation 2 is repeated.
3) The saturated brine in summer can be added with fresh water to manufacture a suitable product in a suitable season in autumn and winter, and the temperature difference salt field and the plastic greenhouse can be taken into consideration in order to improve the controllability of the temperature difference salt field.
4) In autumn and winter, the original brine (saturated brine) collected by the brine collecting channel can be frozen in winter to separate out solid, and the frozen brine is separated out.
5) The method can also be used for the solar production and the refining of the soluble salt produced in the non-salt lake, and the temperature difference salt field can be considered, so that the salt lake is produced and leaves the salt lake area.
The salt field brine evaporation, the crystal substance is except the salt without crystal water such as sodium chloride, and actually, a lot of water-containing crystal salt still exists, such as sodium sulfate decahydrate, hydrargillite, picromerite, and the like.
Test and examples:
the depth of the pre-sunning salt pan in front of the temperature difference salt pan;
the key point of the technology is that salt in brine is evaporated and crystallized by utilizing the temperature difference of the salt field, so that the key point of the technology application is to improve the temperature (and the brine saturation) of the brine entering the salt field and reduce the temperature difference of the brine in the salt field.
TABLE 1 brine temperature measuring instrument for salt pan with different depths
As can be seen, the thickness of the brine layer in the salt pan is shallow in the pre-sunning pond before entering the temperature difference salt pan, so that the temperature of the brine entering the temperature difference salt pan is favorably improved; the brine depth of the temperature difference salt field is shallow, so that the temperature of the brine discharged from the pool of the temperature difference salt field is reduced, and the improvement of the working efficiency of the temperature difference salt field is facilitated.
The brine storage device is used for storing target brine, and the effect of using a deeper salt pan is good (the temperature difference change is small, and the brine quality is stable).
It is well known that salt production vessels have good control over brine temperature difference-crystallization, however, investigation has found that the depth of brine in which the salt production vessels are located is deep (greater than 1 meter), and at least theoretically, the salt production vessels have inferior control over temperature difference-controlled crystallization (evaporation of brine) to the temperature difference salt field described herein.
Example 1: with a certain brine, the brine quality is as follows:
TABLE 2 original bittern quality status table
The brine is evaporated to the extent that no evaporation of the brine occurs, accompanied by other phenomena
Table 3 table of quality conditions of brine quality optimum point controlled by simple solarization process
At this moment, the brine presents solid at night and liquid at noon in the daytime, and the specific evaporation coefficient is measured, so that the brine does not have the evaporation phenomenon, a small-sized test of a conventional simple salt pan is simulated, and how to operate is not known: all operations are not realized by the conventional simple salt pan.
After the bischofite is separated by utilizing the temperature difference between morning and evening, the brine continues to be sunned, and the components of the brine with higher quality are finally sunned as follows:
TABLE 4 Table of the best quality of brine by controlling temperature difference
Freezing in a freezer by using brine with the following quality:
table 5 quality of brine composition table to be frozen
Frozen solid mass status under different freezing conditions:
TABLE 6 frozen solid quality status table under different freezing conditions
It can be seen that the purity of the calcium chloride hexahydrate which is a frozen product with water is high, and the national standard anhydrous calcium chloride product can be obtained by directly washing and drying.
This example demonstrates that, after the solid can be separated from the brine mother liquor which can not be evaporated by using the temperature difference between day and night, the mother liquor can be continuously evaporated, which is beneficial to the enrichment of the enriched components in the mother liquor. Fresh water is added into the hot mother liquor, so that a target product with higher purity can be obtained, and the deep development of the target product is facilitated.
Example 2: seeing method for preparing potassium mixed salt by sulfate type brine through sun-curing
A salt lake belongs to sulfate type brine, and the evaporation route is (rock salt, rock salt and epsomite, rock salt, epsomite and carnallite, rock salt, carnallite and bischofite, rock salt and bischofite).
In the development and utilization of the salt lake, it was found that the salt is formed by epsomite (MgSO)4·7H2O) content, and the local rainfall is relatively much, the actual brine evaporation is difficult to enter the carnallite stage, and the development of the salt lake always lags behind the development of other salt lakes.
In the salt pan test phase, we found that every night-morning, many epsomites are crystallized in the salt pan (rock mine identification), and that by the morning-noon-afternoon, the epsomites disappear (re-dissolve into the brine), so that evaporation of the brine is rather difficult.
As can be seen, the epsomite is actually crystallized in the salt pan, the brine can be continuously evaporated by utilizing the temperature difference salt pan, meanwhile, fresh water is added into the hot mother liquor added into the temperature difference salt pan, the produced epsomite is relatively pure, and pure epsomite (or anhydrous magnesium sulfate) products can be sold on the market
To sum up, this utilize salt pan technique and application of difference in temperature separation component can utilize morning and evening difference in temperature (or winter and summer difference in temperature), and the difference in temperature salt pan combines to use with traditional solarization salt pan, and when cooling (freezing) separates out solid salinity, salt content reduces relatively in the brine, can realize continuing the evaporation, and microelement realizes continuing the enrichment in the brine.
According to the saline field technology and application for separating the components by utilizing the temperature difference, the pure solid can be separated out in the cooling process by adding a proper amount of fresh water into the hot solution after the solid is separated, and the further purification of the solid is facilitated. The purer solid can be used for paving roads for manufacturing other salts (such as potassium sulfate manufactured by high-quality picromerite, potassium chloride and magnesium metal manufactured by high-purity carnallite in a salt field, and potassium sulfate manufactured by high-purity magnesium sulfate heptahydrate).
The salt field technology for separating components by utilizing temperature difference and the application thereof utilize the technology to prepare pure calcium chloride hexahydrate by taking calcium chloride-magnesium chloride mother liquor as a raw material, and the pure calcium chloride hexahydrate is directly dried to obtain a high-grade anhydrous calcium chloride (higher than the national standard) product.
The salt field technology and the application thereof can be still used for manufacturing high-quality epsomite, high-quality carnallite, high-quality bischofite, high-quality mirabilite decahydrate (used for processing high-quality anhydrous sodium sulphate) and other products in salt lakes.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The technical method for separating the components of the salt pan by using the temperature difference structurally comprises a temperature difference salt pan (1) and a reservoir (2), and is characterized in that: a system water inlet (3) is arranged on one side of the temperature difference salt pan (1), a water outlet (4) is arranged on one side of the temperature difference salt pan (1) far away from the system water inlet (3), the water outlet (4) is communicated with the storage tank (2), a pump tank (5) is arranged in the storage tank (2), a water pump (6) communicated with the temperature difference salt pan (1) is arranged in the pump pool (5), a system water outlet (7) is arranged on one side of the storage pool (2), an outer layer filter screen (8) is arranged at the position of the temperature difference salt pan (1) positioned at the water outlet (4), a built-in water drain valve (9) is arranged inside the outer layer filter screen (8), an inner layer water discharge pipe (10) is arranged inside the water discharge port (4), and a wooden plug (11) is arranged at one end, located inside the temperature difference salt pan (1), of the inner layer water discharge pipe (10);
the technical method comprises the following steps:
1) the normal operation of the temperature difference salt field is that when the temperature is higher every day, 14-16 pm, saturated brine is pumped out from a pre-sunning pool, and is put into the temperature difference salt field for two hours after adding little fresh water, and when the temperature is lowest at night, 2-4 pm, cooled cold brine, brine crystallized by crystals is put into a storage pool for two hours;
2) under the condition that the saturation degree of the solarized brine is not enough, before the solarized brine enters a salt pan, the solarized brine and solids containing saturated salt are heated together, solid precipitates are separated, saturated liquid reaches the expected saturation degree, and then the operation 1 is repeated.
2. The method of claim 1, wherein the method comprises the steps of: the size of the temperature difference salt pan (1) is the same as that of the reservoir (2).
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| CN103420400A (en) * | 2012-05-14 | 2013-12-04 | 中国地质科学院盐湖与热水资源研究发展中心 | Salt lake brine evaporation method and equipment thereof, and salt lake brine treatment method by utilizing salt lake brine evaporation method and device thereof |
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