System for preparing carnallite

Abstract

The utility model provides a system for preparing carnallite. The system for preparing carnallite comprises a greenhouse which comprises a top wall, and the top wall is made of a transparent material; the evaporation pond is located in the greenhouse and used for containing brine, the brine generates water vapor after being evaporated in the evaporation pond, and the water vapor is condensed on the top wall of the greenhouse to form fresh water; the fresh water collector is used for collecting fresh water condensed on the top wall; the heating device comprises a heating pipeline, a heating part, a fresh water storage part and a power pump, the interior of the fresh water storage part is communicated with the fresh water collector, the heating part is provided with a heating cavity used for heating fresh water, the heating cavity is communicated with the interior of the fresh water storage part through the power pump, the heating pipeline is communicated with the heating cavity, and the heating pipeline is coiled at the bottom of the evaporation pond. According to the technical scheme, the problem that in the prior art, the production period of carnallite is long, and consequently the mineralization rate is reduced is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of carnallites preparation, in particular to a system for preparing carnallites. Background Art

[0002] Potash fertilizer is a type of fertilizer containing potassium, one of the main nutrients necessary for plant growth. Potash fertilizer production is a complex industrial process, primarily sourced from two sources: lake potassium and mineralized potassium. The primary process for mineralized potassium production involves extracting intercrystalline brine (also known as raw brine) from salt lake formations and transporting it to large, artificial salt ponds (commonly known as salt pans). The raw brine is then dried using solar energy to evaporate and dry, releasing some potassium chloride to produce mineralized brine (also known as E-halide). This mineralized brine is then dried to produce carnallite (KCl·MgCl2·6H2O). Finally, the potassium chloride in the carnallite is extracted through chemical processes such as crystallization and flotation to produce potash fertilizer.

[0003] However, in the process of preparing carnallite, on the one hand, the production cycle of preparing carnallite by natural evaporation is relatively long; on the other hand, due to seasonal influences, when the temperature is low, the evaporation of the original brine decreases and the mineralization rate also decreases accordingly. Utility Model Content

[0004] The main purpose of the utility model is to provide a system for preparing carnallite, so as to solve the problem in the prior art that the production cycle of carnallite is long, thereby causing a decrease in mineralization rate.

[0005] To achieve the above-mentioned objectives, the present invention provides a system for preparing carnallite. The system comprises: a greenhouse, comprising a top wall made of a transparent material; an evaporation tank located within the greenhouse, which is used to hold brine. The brine evaporates in the evaporation tank to produce water vapor, which condenses on the top wall of the greenhouse to form fresh water; a fresh water collector, which collects the fresh water condensed on the top wall; and a heating device, comprising a heating pipeline, a heating unit, a fresh water storage unit, and a power pump. The interior of the fresh water storage unit is connected to the fresh water collector. The heating unit has a heating chamber for heating fresh water, which is connected to the interior of the fresh water storage unit via the power pump. The heating pipeline is connected to the heating chamber and is coiled around the bottom of the evaporation tank.

[0006] Furthermore, the top wall is arranged obliquely, and has a high side and a low side arranged opposite to each other, and the fresh water collector is located on the low side of the top wall.

[0007] Furthermore, an opening is provided on the top of the fresh water storage portion, and the fresh water collector is a water collector, which is arranged at an angle in the greenhouse. The inclination direction of the water collector is the same as the inclination direction of the top wall. The high side of the water collector extends into the greenhouse, and the high side of the water collector is located below the top wall. The high side of the water collector is arranged corresponding to the low side of the top wall, and the low side of the water collector extends out of the greenhouse, and the low side of the water collector is connected to the opening.

[0008] Furthermore, the greenhouse also includes a first wall, a second wall and two third walls, the first wall is higher than the second wall, the two third walls are used to connect the first wall and the second wall, and the first wall, the second wall and the two third walls are all connected to the top wall.

[0009] Furthermore, the evaporation pool includes a dam body, multiple longitudinal dams and multiple transverse dams, the dam body is used to enclose a receiving tank, the multiple longitudinal dams are arranged at intervals along the transverse direction of the receiving tank, and the multiple transverse dams are arranged at intervals along the longitudinal direction of the receiving tank. The longitudinal dams and the transverse dams are arranged crosswise to form multiple evaporation units.

[0010] Furthermore, the system for preparing carnallite also includes an anti-seepage plate, at least a portion of which is located between the outer wall of the evaporation pond and the inner wall of the greenhouse.

[0011] Furthermore, the anti-seepage plate includes a first plate segment and a second plate segment connected and arranged at an angle, the first plate segment is located between the outer wall of the evaporation pool and the inner wall of the greenhouse, and the second plate segment is located at the bottom of the evaporation pool.

[0012] Furthermore, the height of the first plate section is higher than the height of the evaporation pond.

[0013] Further, the top wall is made of a plastic film; and / or the heating part is a solar heater.

[0014] Furthermore, the system for preparing carnallite also includes a waterproof layer, which is located below the heating pipeline.

[0015] By applying the technical solution of the present invention, brine produces water vapor after natural evaporation in the evaporation pond, and the water vapor adheres to the top wall of the greenhouse. Due to the large temperature difference between day and night, the water vapor will liquefy into fresh water when it is cooled, and the fresh water condenses on the top wall of the greenhouse. The fresh water on the top wall is collected by the fresh water collector and enters the fresh water storage part. Under the action of the power pump, the fresh water flows from the fresh water storage part through the heating chamber to the heating pipeline. In this way, the fresh water heated by the heating chamber can enter the bottom of the evaporation pond and heat the brine in the evaporation pond. Compared with the prior art in which the brine is evaporated and dried only by natural evaporation, the present invention heats the brine in the evaporation pond. On the one hand, the evaporation amount of the brine in the evaporation pond can be increased, thereby increasing the mineralization amount of carnallites, and thereby reducing the production cycle of carnallites; on the other hand, it can also avoid the phenomenon of reduced evaporation amount of brine due to low temperature, thereby avoiding the phenomenon of reduced mineralization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of an embodiment of a system for preparing carnallite according to the present invention is shown;

[0018] Figure 2 Shown Figure 1 A top view of a system for preparing carnallite;

[0019] Figure 3 The utility model shows the operation steps of preparing carnallite.

[0020] The above drawings include the following reference numerals:

[0021] 1. Top wall; 2. Evaporation tank; 3. Fresh water collector; 4. Heating pipe; 5. First wall; 6. Second wall; 7. Third wall; 8. Dam body; 9. Anti-seepage plate; 10. First plate section; 11. Second plate section; 13. Water collecting pipe; 14. Half wall. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a system for preparing carnallite. The system for preparing carnallite includes a greenhouse, which includes a top wall 1 made of a transparent material; an evaporation tank 2 located within the greenhouse, which is used to accommodate brine. After evaporation in the evaporation tank 2, the brine produces water vapor, which condenses on the top wall 1 of the greenhouse to form fresh water; a fresh water collector 3 for collecting the fresh water condensed on the top wall 1; and a heating device including a heating pipe 4, a heating unit, a fresh water storage unit, and a power pump. The interior of the fresh water storage unit is connected to the fresh water collector 3. The heating unit has a heating chamber for heating fresh water. The heating chamber is connected to the interior of the fresh water storage unit via the power pump. The heating pipe 4 is connected to the heating chamber and is coiled around the bottom of the evaporation tank 2.

[0024] In the above technical solution, brine produces water vapor after natural evaporation in the evaporation pond 2, and the water vapor adheres to the top wall 1 of the greenhouse. Due to the large temperature difference between day and night, the water vapor will liquefy into fresh water when it is cooled, and the fresh water condenses on the top wall 1 of the greenhouse. The fresh water on the top wall 1 is collected by the fresh water collector 3 and enters the fresh water storage part. Under the action of the power pump, the fresh water flows from the fresh water storage part through the heating chamber to the heating pipe 4. In this way, the fresh water heated by the heating chamber can enter the bottom of the evaporation pond 2 and heat the brine in the evaporation pond 2. Compared with the prior art in which the brine is evaporated and dried only by natural evaporation, in the utility model, by heating the brine in the evaporation pond 2, on the one hand, the evaporation amount of the brine in the evaporation pond 2 can be increased, thereby increasing the mineralization amount of carnallites, and thereby reducing the production cycle of carnallites; on the other hand, it can also avoid the phenomenon of reduced evaporation amount of brine due to low temperature, so as to avoid the phenomenon of reduced mineralization rate.

[0025] Specifically, in the embodiment of the present invention, the heating pipeline 4 is a floor heating pipeline.

[0026] It should be noted that, in the embodiment of the present invention, after the fresh water in the heating pipe 4 heats the brine in the evaporation tank 2, it can be discharged through the outlet of the heating pipe 4 and can be used for purposes such as cleaning machines.

[0027] Preferably, in an embodiment of the present invention, the power pump is a centrifugal pump, which includes a motor, an impeller, and a pump casing. The motor is used to drive the impeller to rotate. When the impeller rotates, the fresh water gains speed under the push of the blades, and at the same time, under the action of centrifugal force, the fresh water is pushed to the outer edge of the impeller. However, due to the presence of the pump casing, the fresh water cannot diffuse outward, so the pressure of the fresh water will increase. The fresh water with increased pressure is transported to the outlet through the guide part of the pump casing. The specific structure of the centrifugal pump can refer to the existing technology and will not be repeated here.

[0028] like Figure 1As shown, in the embodiment of the present invention, the top wall 1 is tilted, and the top wall 1 has a high side and a low side that are relatively arranged, and the fresh water collector 3 is located on the low side of the top wall 1.

[0029] Through the above arrangement, under the action of gravity, fresh water can slide from the high side of the top wall 1 to the low side, and then flow into the fresh water collector 3 from the low side of the top wall 1, and enter the fresh water storage part through the fresh water collector 3, so as to facilitate the collection and heating of fresh water.

[0030] like Figure 1 As shown, in the embodiment of the present invention, an opening is provided on the top of the fresh water storage portion, and the fresh water collector 3 is a water collector, which is arranged obliquely in the greenhouse. The inclination direction of the water collector is the same as the inclination direction of the top wall 1. The high side of the water collector extends into the greenhouse, and the high side of the water collector is located below the top wall 1. The high side of the water collector is arranged corresponding to the low side of the top wall 1, and the low side of the water collector extends out of the greenhouse, and the low side of the water collector is connected to the opening.

[0031] In the above technical solution, fresh water falls from the low side of the top wall 1 to the high side of the water collector, and then flows through the low side of the water collector to the opening of the fresh water storage part. In this way, fresh water can flow from the top wall 1 into the fresh water storage part to facilitate the collection of fresh water.

[0032] It should be noted that, in the embodiment of the present invention, the specific structure of the water collector can adopt the existing technology, which will not be described in detail here.

[0033] Preferably, in an embodiment of the present invention, the system for preparing carnallite also includes a water collecting pipe 13, which is used to collect fresh water from the lower side of the water collector, and the outlet of the water collecting pipe 13 is connected to the opening so that the fresh water collected by the water collector is transported to the opening of the fresh water storage part through the water collecting pipe 13.

[0034] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the greenhouse also includes a first wall 5, a second wall 6 and two third walls 7, the first wall 5 is higher than the second wall 6, the two third walls 7 are used to connect the first wall 5 and the second wall 6, and the first wall 5, the second wall 6 and the two third walls 7 are all connected to the top wall 1.

[0035] In the above technical solution, the first wall 5, the second wall 6 and the two third walls 7 can support the top wall 1. By arranging the first wall 5 and the second wall 6 of different heights, the top wall 1 can be arranged tilted.

[0036] Preferably, in an embodiment of the present invention, the greenhouse is a half-wall sunroom.

[0037] like Figure 1 and Figure 2As shown, in an embodiment of the present invention, the evaporation pool 2 includes a dam body 8, multiple longitudinal dams and multiple transverse dams. The dam body 8 is used to enclose a receiving tank. The multiple longitudinal dams are arranged at intervals along the transverse direction of the receiving tank, and the multiple transverse dams are arranged at intervals along the longitudinal direction of the receiving tank. The longitudinal dams and the transverse dams are arranged crosswise to form multiple evaporation units.

[0038] Through the above arrangement, the brine can be evaporated in multiple evaporation units, so that the brine can be evaporated separately to improve the evaporation efficiency of the brine, and then the evaporation amount of the brine can be further increased to reduce the production cycle of carnallite.

[0039] In one embodiment, the number of the evaporation unit may be one.

[0040] Since the dam of the evaporation pond 2 is generally composed of crystallized salt, Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the system for preparing carnallite further includes an anti-seepage plate 9, at least a portion of which is located between the outer wall of the evaporation pool 2 and the inner wall of the greenhouse.

[0041] The above arrangement can prevent fresh water on the top wall 1 from seeping into the dam of the evaporation pool 2 from the inner wall of the greenhouse, thereby preventing the fresh water from dissolving the dam and further preventing the dam from collapsing.

[0042] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the anti-seepage plate 9 includes a first plate segment 10 and a second plate segment 11 that are connected and arranged at an angle. The first plate segment 10 is located between the outer wall of the evaporation pool 2 and the inner wall of the greenhouse, and the second plate segment 11 is located at the bottom of the evaporation pool 2.

[0043] In the above technical solution, by providing the first plate section 10, fresh water on the top wall 1 can be prevented from seeping into the dam body of the evaporation pool 2 from the inner wall of the greenhouse. By providing the second plate section 11, fresh water can be prevented from seeping into the dam body through the bottom of the evaporation pool 2, thereby preventing the fresh water from dissolving the dam body and further preventing the dam body from collapsing.

[0044] Specifically, in the embodiment of the present invention, the anti-seepage plate 9 is configured to be L-shaped, and the angle between the first plate segment 10 and the second plate segment 11 is 90°.

[0045] like Figure 1 As shown, in the embodiment of the present invention, the height of the first plate section 10 is higher than the height of the evaporation pond 2. In this way, the fresh water can be better prevented from contacting the dam body 8 of the evaporation pond 2.

[0046] like Figure 1 As shown, in the embodiment of the present invention, the top wall 1 is made of a plastic film.

[0047] Through the above arrangement, the plastic film not only has good waterproof performance, but also has low cost, so the cost of replacement and maintenance is low.

[0048] Preferably, in an embodiment of the present invention, the heating unit is a solar heater.

[0049] In the above technical solution, by setting up a solar heater, not only can carbon emissions be reduced, but solar energy can also be converted into thermal energy, so that fresh water can be heated, thereby improving energy utilization efficiency.

[0050] Specifically, in the embodiment of the present invention, the first wall 5 , the second wall 6 and the two third walls 7 each include a half wall 14 and a transparent plastic plate connected to the half wall 14 .

[0051] like Figure 2 As shown, in an embodiment of the present invention, the system for preparing carnallite further includes a waterproof layer, which is located below the heating pipeline 4.

[0052] Through the above arrangement, not only can the leakage of fresh water in the heating pipeline 4 be avoided, but the heating pipeline 4 can also be kept warm.

[0053] Specifically, in the embodiment of the present invention, the waterproof layer is a HDPE geomembrane. HDPE geomembrane (high-density polyethylene geomembrane) is a widely used waterproof barrier material. HDPE geomembrane has good anti-seepage performance and can effectively prevent liquid leakage and pollution.

[0054] Specifically, in the embodiment of the present invention, the power pump is a self-circulating pump, and the heating pipeline 4, the solar heater and the self-circulating pump form self-circulating floor heating.

[0055] Specifically, in the embodiment of the present invention, fresh water is collected into the fresh water storage part through the fresh water collector 3. Under the action of the power pump, the fresh water is heated to a certain temperature in the heating chamber by the solar heater from the fresh water storage part, and then flows into the floor heating pipeline. The brine in the evaporation pool 2 is heated by heat transfer. In this way, the temperature of the brine can be increased and the evaporation amount of the brine can be increased.

[0056] Specifically, in the embodiment of the present invention, Figure 3As shown, the preparation of carnallite includes the following steps: Step S1: transporting brine to the evaporation pond 2 for natural evaporation and concentration; Step S2: the brine generates water vapor under natural evaporation, and the water vapor adheres to the wall surface of the top wall 1. Due to the large temperature difference between day and night, the water vapor liquefies into fresh water, condenses on the top wall 1, and slides into the fresh water collector 3; Step S3: heating the collected fresh water through a solar heater; Step S4: the heated fresh water flows to the heating pipeline 4, and the brine in the evaporation pond 2 is heated by heat transfer, and the self-circulation pump is used for regular circulation to achieve the purpose of heating the brine in the evaporation pond 2.

[0057] Specifically, in the embodiment of the present invention, the Qarhan Salt Lake belongs to the extremely arid climate zone of the plateau temperate zone, with long winters and short summers, frequent winds and little rain, strong evaporation, and large temperature differences between day and night.

[0058] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: brine generates water vapor after natural evaporation in the evaporation pond, and the water vapor adheres to the top wall of the greenhouse. Due to the large temperature difference between day and night, the water vapor will liquefy into fresh water when it is cooled, and the fresh water condenses on the top wall of the greenhouse. The fresh water on the top wall is collected by the fresh water collector and enters the fresh water storage part. Under the action of the power pump, the fresh water flows from the fresh water storage part through the heating chamber to the heating pipeline. In this way, the fresh water heated by the heating chamber can enter the bottom of the evaporation pond and heat the brine in the evaporation pond. Compared with the prior art in which the brine is evaporated and dried only by natural evaporation, in the present invention, by heating the brine in the evaporation pond, on the one hand, the evaporation amount of the brine in the evaporation pond can be increased, thereby increasing the mineralization amount of carnallites, and thereby reducing the production cycle of carnallites; on the other hand, it can also avoid the phenomenon of reduced evaporation amount of brine due to low temperature, so as to avoid the phenomenon of reduced mineralization rate.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A system for preparing carnallite, characterized in that: include: A greenhouse, comprising a top wall (1), wherein the top wall (1) is made of a transparent material; An evaporation pond (2) is located in the greenhouse, and the evaporation pond (2) is used to accommodate brine. After the brine evaporates in the evaporation pond (2), water vapor is generated, and the water vapor condenses on the top wall (1) of the greenhouse to form fresh water; a fresh water collector (3) for collecting the fresh water condensed on the top wall (1); The heating device comprises a heating pipeline (4), a heating part, a fresh water storage part and a power pump, wherein the interior of the fresh water storage part is communicated with the fresh water collector (3), the heating part has a heating chamber for heating the fresh water, the heating chamber is communicated with the interior of the fresh water storage part through the power pump, the heating pipeline (4) is communicated with the heating chamber, and the heating pipeline (4) is coiled at the bottom of the evaporation pond (2).

2. The system for preparing carnallite according to claim 1, wherein: The top wall (1) is arranged obliquely, and the top wall (1) has a high side and a low side arranged opposite to each other, and the fresh water collector (3) is located on the low side of the top wall (1).

3. The system for preparing carnallite according to claim 2, characterized in that: The top of the fresh water storage portion is provided with an opening, and the fresh water collector (3) is a water collector, which is arranged obliquely in the greenhouse, and the inclination direction of the water collector is the same as the inclination direction of the top wall (1). The high side of the water collector extends into the greenhouse, and the high side of the water collector is located below the top wall (1). The high side of the water collector is arranged corresponding to the low side of the top wall (1), and the low side of the water collector extends out of the greenhouse, and the low side of the water collector is connected to the opening.

4. The system for preparing carnallite according to any one of claims 1 to 3, characterized in that: The greenhouse further comprises a first wall (5), a second wall (6) and two third walls (7), wherein the first wall (5) is higher than the second wall (6), and the two third walls (7) are used to connect the first wall (5) and the second wall (6), and the first wall (5), the second wall (6) and the two third walls (7) are all connected to the top wall (1).

5. The system for preparing carnallite according to any one of claims 1 to 3, characterized in that: The evaporation pond (2) comprises a dam body (8), a plurality of longitudinal dams and a plurality of transverse dams, wherein the dam body (8) is used to enclose a receiving tank, the plurality of longitudinal dams are arranged at intervals along the transverse direction of the receiving tank, the plurality of transverse dams are arranged at intervals along the longitudinal direction of the receiving tank, and the longitudinal dams and the transverse dams are arranged crosswise to form a plurality of evaporation units.

6. The system for preparing carnallite according to any one of claims 1 to 3, characterized in that: The system for preparing carnallite further comprises an anti-seepage plate (9), at least part of which is located between the outer wall of the evaporation pond (2) and the inner wall of the greenhouse.

7. The system for preparing carnallite according to claim 6, characterized in that: The anti-seepage plate (9) comprises a first plate segment (10) and a second plate segment (11) which are connected and arranged at an angle, wherein the first plate segment (10) is located between the outer wall of the evaporation pool (2) and the inner wall of the greenhouse, and the second plate segment (11) is located at the bottom of the evaporation pool (2).

8. The system for preparing carnallite according to claim 7, characterized in that: The height of the first plate section (10) is higher than the height of the evaporation pond (2).

9. The system for preparing carnallite according to any one of claims 1 to 3, characterized in that: The top wall (1) is made of a plastic film; and / or the heating part is a solar heater.

10. The system for preparing carnallite according to any one of claims 1 to 3, characterized in that: The system for preparing carnallite further comprises a waterproof layer, and the waterproof layer is located below the heating pipeline (4).

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