Magnesium chloride cooling crystallization device

Abstract

The utility model relates to the technical field of crystallization equipment, and discloses a magnesium chloride cooling crystallization device which comprises a tank body and a partition plate, a copper pipe vertically penetrates through the interior of a cooling chamber, the lower portion of the copper pipe penetrates into a filtering chamber below the partition plate, fins are fixed to the outer ring of the copper pipe, and the upper portion of the copper pipe is communicated with a liquid inlet pipe penetrating out of the upper portion of the tank body. The side edge of the liquid inlet pipe is transversely connected with a backflow pipe communicated with the interior of the liquid inlet pipe, a conical filter screen is fixed to the lower position in the filter chamber, and the bottom of the filter chamber is connected with a liquid outlet pipe communicated with the interior of the filter chamber. According to the technical scheme of the utility model, a solution enters the copper pipe and is rapidly cooled under the action of the fins and cold water to separate out magnesium chloride crystals, then the solution enters the filter chamber and is filtered by the conical filter screen to separate the crystals and the solution, and the solution is pumped out from the liquid outlet pipe and flows back to the liquid inlet pipe and the copper pipe through the return pipe again; and crystals are discharged from the discharging pipe, and the magnesium chloride-containing solution can enter the copper pipe for multiple times to be circularly cooled and crystallized, so that additional treatment is avoided, and waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of crystallization equipment, in particular to a magnesium chloride cooling crystallization device. Background Art

[0002] Magnesium chloride is an inorganic substance with the chemical formula MgCl2 and a molecular weight of 95.211. It is a colorless flaky crystal, slightly soluble in acetone, soluble in water, ethanol, methanol, and pyridine. It deliquesces and smokes in moist air, and sublimates when it is white hot in a hydrogen gas stream. Crystallization refers to the supersaturation of a hot saturated solution due to the decrease in solubility of the solute after cooling, so that the solute precipitates in the form of crystals. Since a chemical reaction occurs when a magnesium chloride solution is heated, magnesium chloride is produced by cooling and crystallization.

[0003] During the cooling crystallization, the magnesium chloride in the solution cannot be completely precipitated, so the waste liquid discharged along with the crystallization still contains a large amount of magnesium chloride components, which requires additional treatment, which is time-consuming, labor-intensive and wasteful. Therefore, we propose a magnesium chloride cooling crystallization device. Utility Model Content

[0004] The utility model aims to provide a magnesium chloride cooling crystallization device, which allows a solution to enter a copper tube and rapidly cool down to precipitate magnesium chloride crystals through the action of fins and cold water, and then enter a filter chamber to be filtered by a conical filter to separate crystals and solution, the solution is drawn out from a liquid outlet pipe and refluxed to a liquid inlet pipe and the copper tube through a reflux pipe, and the crystals are discharged from a discharge pipe, and the magnesium chloride-containing solution enters the copper tube for multiple cycles of cooling and crystallization, thereby avoiding additional treatment and reducing waste, and solving the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnesium chloride cooling crystallization device, comprising a tank body and a partition, wherein the partition is transversely fixed at the middle position inside the tank body, and a cooling chamber and a filter chamber are respectively arranged inside the tank body above and below the partition; a copper tube is vertically penetrated inside the cooling chamber, and the bottom of the copper tube penetrates into the filter chamber below the partition, a fin is fixed on the outer ring of the copper tube, and a liquid inlet pipe that penetrates to the outside of the upper part of the tank body is connected to the top of the copper tube, and a reflux pipe that is connected to the inside of the liquid inlet pipe is transversely connected to the side of the liquid inlet pipe; a conical filter screen is fixed at a lower position inside the filter chamber, and four discharge pipes are obliquely connected to the outer surface of the tank body of the outer ring of the conical filter screen, and the discharge pipe is connected to the inside of the filter chamber above the conical filter screen, and the bottom of the filter chamber is connected to a liquid outlet pipe that is connected to the inside of the filter chamber.

[0006] By adopting the above technical scheme, cold water is circulated from bottom to top in the cooling chamber, and the magnesium chloride solution enters the copper tube. The solution is quickly cooled by the cold water through the fins to precipitate magnesium chloride crystals, and then the crystals and the solution are filtered through a conical filter to separate the crystals and the solution. The solution is extracted and enters the copper tube again for rotation, and the crystals are discharged and collected, so that the purpose of solution circulation cooling crystallization to avoid waste and reduce the number of operation steps can be achieved.

[0007] Optionally, a water inlet pipe communicating with the interior of the cooling chamber is connected to the surface of the tank body at the lower side of the cooling chamber, and a flange is connected to the end of the water inlet pipe.

[0008] By adopting the above technical solution, the swirling cooling water inside the cooling chamber enters the interior of the cooling chamber from the water inlet pipe.

[0009] Optionally, a water outlet pipe communicating with the interior of the cooling chamber is connected to the surface of the tank body on the upper side of the cooling chamber, and a flange is connected to the end of the water outlet pipe.

[0010] By adopting the above technical solution, the swirling cooling water inside the cooling chamber is discharged from the water outlet pipe to the outside of the cooling chamber.

[0011] Optionally, the ends of the liquid inlet pipe, the liquid outlet pipe and the reflux pipe are all connected with flanges, and the flanges are respectively connected to the inside of the liquid inlet pipe, the liquid outlet pipe and the reflux pipe.

[0012] By adopting the above technical solution, the purpose of connecting the liquid inlet pipe to the solution supply pipe, the liquid outlet pipe to the water pump inlet, and the reflux pipe to the water pump outlet is achieved through the flange.

[0013] Optionally, a one-way valve is installed on the reflux pipe, and the flow direction of the one-way valve is toward the reflux pipe.

[0014] By adopting the above technical solution, it is ensured that the reflux pipe maintains a one-way flow, thereby preventing the solution from flowing from the liquid inlet pipe into the reflux pipe without entering the copper pipe.

[0015] Optionally, the outer ring of the copper tube is provided with a plurality of fins, and the plurality of fins are evenly distributed on the outer ring of the copper tube.

[0016] By adopting the above technical solution, multiple evenly distributed fins can better dissipate the heat of the solution inside the copper tube into the cool water.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The technical solution of the present application is to provide a cooling chamber and a filtering chamber inside the tank body. The solution enters the copper tube and is rapidly cooled by the fins and cold water to precipitate magnesium chloride crystals. The solution then enters the filtering chamber and is filtered by a conical filter to separate the crystals and the solution. The solution is drawn out from the liquid outlet pipe and flows back to the liquid inlet pipe and the copper tube through the reflux pipe again, while the crystals are discharged from the discharge pipe. The magnesium chloride solution will enter the copper tube for multiple cycles to cool and crystallize, thereby avoiding additional treatment and reducing waste.

[0019] 2. The technical solution of the present application evenly connects a plurality of fins on the outer ring of the copper tube, so that the solution in the copper tube can be quickly cooled by cold water through the fins to absorb heat, so that magnesium chloride crystals are precipitated more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the magnesium chloride cooling crystallization device of the utility model;

[0022] Figure 2 The utility model is a schematic diagram of the internal structure of the magnesium chloride cooling crystallization device.

[0023] In the figure: 1. tank body; 11. cooling chamber; 111. water inlet pipe; 112. water outlet pipe; 12. filter chamber; 121. conical filter screen; 122. discharge pipe; 2. partition; 3. copper tube; 31. fin; 4. liquid inlet pipe; 41. reflux pipe; 411. one-way valve; 5. liquid outlet pipe; 6. flange. DETAILED DESCRIPTION

[0024] See also Figure 1-2 The utility model provides a technical solution: a magnesium chloride cooling crystallization device, comprising a tank body 1 and a partition 2, the partition 2 is transversely fixed in the middle position of the tank body 1, and a cooling chamber 11 and a filtering chamber 12 are respectively arranged inside the tank body 1 above and below the partition 2.

[0025] The surface of the tank body 1 on the lower side of the cooling chamber 11 is connected to a water inlet pipe 111 that is connected to the interior of the cooling chamber 11, and a flange 6 is connected to the end of the water inlet pipe 111. The spiral cold water supply pipe is connected to the water inlet pipe 111 through the flange 6, thereby entering the cooling chamber 11 from the water inlet pipe 111. The surface of the tank body 1 on the upper side of the cooling chamber 11 is connected to a water outlet pipe 112 that is connected to the interior of the cooling chamber 11, and a flange 6 is connected to the end of the water outlet pipe 112. The return water pipe is connected to the water outlet pipe 112 through the flange 6, so that the cold water in the cooling chamber 11 flows out from the top to form a circulation.

[0026] A copper tube 3 is vertically penetrated inside the cooling chamber 11, and a liquid inlet pipe 4 communicating with the inside is connected to the top of the copper tube 3. The liquid inlet pipe 4 penetrates to the top outside of the tank body 1, and a flange 6 is connected to the top end of the liquid inlet pipe 4. The magnesium chloride solution supply pipe is connected to the liquid inlet pipe 4 through the flange 6, so that the magnesium chloride solution enters the copper tube 3 through the liquid inlet pipe 4. The outer ring of the copper tube 3 is fixed with a fin 31, and the outer ring of the copper tube 3 is provided with a plurality of fins 31, and the plurality of fins 31 are evenly distributed on the outer ring of the copper tube 3. The solution entering the copper tube 3 passes through the fins 31 and quickly dissipates heat into the cold water, so that magnesium chloride crystals are precipitated.

[0027] The copper tube 3 passes through the filter chamber 12 below the partition 2, and the solution containing the precipitated crystals flows downward into the filter chamber 12. A conical filter screen 121 is fixed at a lower position inside the filter chamber 12. Four discharge pipes 122 are obliquely connected to the outer surface of the tank body 1 of the outer circle of the conical filter screen 121. The discharge pipes 122 are connected to the inside of the filter chamber 12 above the conical filter screen 121. After being filtered by the conical filter screen 121, the crystals will remain on the surface of the conical filter screen 121 and be discharged from the discharge pipes 122 obliquely downward and collected.

[0028] The bottom of the filter chamber 12 is connected to a liquid outlet pipe 5 connected to the interior thereof, and the lower end of the liquid outlet pipe 5 is connected to a flange 6 connected to the interior thereof, so that the liquid outlet pipe 5 is connected to the inlet of the water pump through the flange 6, and the side of the liquid inlet pipe 4 is laterally connected to a reflux pipe 41 connected to the interior thereof, and the end of the reflux pipe 41 is connected to a flange 6 connected to the interior thereof, and the outlet of the water pump is connected to the reflux pipe 41 through the flange 6, so that the filtered and separated solution falling to the bottom is extracted from the liquid outlet pipe 5 and then flows from the reflux pipe 41 into the liquid inlet pipe 4, and then enters the rotating ring in the copper tube 3, and a one-way valve 411 is installed on the reflux pipe 41, and the one-way valve 411 flows toward the direction of the reflux pipe 41, which can prevent the solution in the liquid inlet pipe 4 from flowing backward through the reflux pipe 41.

[0029] When in use, a corrosion-resistant water pump is arranged on the side of the tank body 1, the inlet of the water pump is connected to the liquid outlet pipe 5 through the flange 6, and the outlet of the water pump is connected to the reflux pipe 41 through the flange 6, the magnesium chloride supply pipe is connected to the liquid inlet pipe 4 through the flange 6, the discharge pipe 122 is connected to the magnesium chloride crystallization collection device, and the water inlet pipe 111 is connected to the cold water supply pipe, and the water outlet pipe 112 is connected to the return water pipe. When cooling and crystallizing, the cold water flows from the water inlet pipe 111 into the cooling chamber 11 and flows out from the water outlet pipe 112, and the magnesium chloride solution flows from the liquid inlet pipe 111 to the cooling chamber 11. The liquid flows into the copper tube 3 through the fins 31, and the heat is quickly absorbed by the rotating cold water to cool down, and magnesium chloride crystals are precipitated. Then, the solution containing the crystals flows downward and is filtered through the conical filter 121 in the filter chamber 12, so that the solution is filtered through the conical filter 121 and pumped away from the liquid outlet pipe 5 by the water pump, and then flows into the liquid inlet pipe 4 again through the reflux pipe 41 and the one-way valve 411 and enters the copper tube 3 for circulation again. The magnesium chloride crystals left by the filtration slide outward under the action of gravity and are discharged from the discharge pipe 122 and collected.

Claims

1. A magnesium chloride cooling crystallization device, comprising a tank body (1) and a baffle (2), characterized in that: The partition (2) is transversely fixed at a middle position inside the tank body (1), and a cooling chamber (11) and a filtering chamber (12) are respectively arranged inside the tank body (1) above and below the partition (2); A copper tube (3) vertically penetrates the interior of the cooling chamber (11), and the bottom of the copper tube (3) penetrates into the filter chamber (12) below the partition (2), a fin (31) is fixed to the outer ring of the copper tube (3), and the top of the copper tube (3) is connected to a liquid inlet pipe (4) that penetrates to the top of the tank body (1), and the side of the liquid inlet pipe (4) is horizontally connected to a return pipe (41) that is connected to the inside of the liquid inlet pipe (4); A conical filter screen (121) is fixed at a lower position inside the filter chamber (12); four discharge pipes (122) are obliquely connected to the outer surface of the tank body (1) outside the conical filter screen (121); the discharge pipes (122) are connected to the inside of the filter chamber (12) above the conical filter screen (121); and a liquid discharge pipe (5) connected to the inside of the filter chamber (12) is connected to the bottom of the filter chamber (12).

2. A magnesium chloride cooling crystallization device according to claim 1, characterized in that: A water inlet pipe (111) communicating with the interior of the cooling chamber (11) is connected to the surface of the tank body (1) at the lower side of the cooling chamber (11), and a flange (6) is connected to the end of the water inlet pipe (111).

3. A magnesium chloride crystallization device by decreasing the temperature according to claim 1, characterized in that: A water outlet pipe (112) communicating with the interior of the cooling chamber (11) is connected to the surface of the tank body (1) on the upper side of the cooling chamber (11), and a flange (6) is connected to the end of the water outlet pipe (112).

4. A magnesium chloride cooling crystallization device according to claim 1, characterized in that: The ends of the liquid inlet pipe (4), the liquid outlet pipe (5) and the return pipe (41) are all connected with flanges (6), and the flanges (6) are respectively connected with the inside of the liquid inlet pipe (4), the liquid outlet pipe (5) and the return pipe (41).

5. A magnesium chloride cooling crystallization device according to claim 1, characterized in that: A one-way valve (411) is installed on the return pipe (41), and the one-way valve (411) flows in the direction of the return pipe (41).

6. A magnesium chloride cooling crystallization device according to claim 1, characterized in that: The outer ring of the copper tube (3) is provided with a plurality of fins (31), and the plurality of fins (31) are evenly distributed on the outer ring of the copper tube (3).

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