Freeze concentration device

Abstract

The invention belongs to the technical field of freeze concentration, and particularly relates to a freeze concentration device which comprises a freeze dissolution assembly, a gas treatment assembly and a gas-liquid separation device, the freezing and dissolving assembly comprises a container, a container upper cover, a gas guide hole formed in the container upper cover, and a gas-liquid mixture outlet formed in the bottom of the container; the gas treatment assembly is connected with the container, high air pressure provided by the gas treatment assembly is used for extruding and breaking the frozen materials in the container, and energy medium gas provided by the gas treatment assembly is used for transferring heat to the frozen materials in the container; the gas-liquid separation device is connected with the gas-liquid mixture outlet and is used for carrying out gas-liquid separation on the gas-liquid mixture flowing out; the dilute solution is frozen into a solid-state or solid-liquid mixed-state frozen material in the freezing and dissolving assembly, and after the frozen material in the container is extruded and broken by the high air pressure of the gas treatment assembly, the energy medium gas penetrates through the frozen material, so that dissolving and separation are realized, and the concentration of the dilute solution is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of freeze concentration, and in particular relates to a freeze concentration device. Background Art

[0002] The existing freeze concentration technology method is: using the solid-liquid phase relationship between a dilute solution and ice below the freezing point to achieve concentration through solid-liquid separation; this method mainly has two methods: suspension crystallization freeze concentration method and (interface) progressive freeze concentration method. In addition, there is a freeze concentration method that uses the natural dissolution of ice or heating to dissolve the ice (belonging to the traditional conventional heating and dissolving freeze concentration method). However, these three types of existing freeze concentration methods all have the problem of low concentration efficiency.

[0003] Suspended crystallization freeze concentration and progressive freeze concentration are methods of achieving concentration by separating solid and liquid (ice crystals and liquid). Both methods have the problem of ice crystals entraining solutes and low concentration efficiency. Although the traditional conventional heating and dissolving (including natural dissolution) concentration method for frozen materials does not have the efficiency problem caused by solute entrainment, it has to face a problem that technicians have been unable to solve for a long time and seriously affects the concentration efficiency: when the frozen materials are heated in the traditional conventional way, if the heating is too fast, the concentration effect will deteriorate. If low-temperature heating (such as refrigeration temperature) is used, the concentration effect will be better than that at high temperature (relative to the temperature), but it takes a very long time. For this reason, when technicians use the traditional conventional heating and dissolving freeze concentration method, they generally prefer natural dissolution at room temperature (heating and dissolving using environmental energy) or heating and dissolving at refrigeration temperature; the traditional conventional heating and dissolving (including natural dissolution at room temperature) freeze concentration is not only time-consuming, but also has a lower concentration efficiency than the first two methods (methods of achieving concentration through solid-liquid separation). Therefore, most of the current mainstream freeze concentration technology methods use the first two methods (methods of achieving concentration through solid-liquid separation).

[0004] The freeze concentration device described in the prior art includes a dissolution component and a gas treatment component; a filter element is provided in the dissolution component, and the filter element divides the dissolution component into two parts: the upper part of the dissolution component is used to load the crushed solid, and the lower part of the dissolution component is used to load the dissolved solution; the gas treatment component includes a gas drying device, a gas temperature regulating device, and a fan connected in sequence; a gas inlet is provided on the side wall or top of the upper part of the dissolution component, and the gas inlet is connected to the fan outlet, and a gas outlet is provided on the side wall of the lower part of the dissolution component. The dry gas entering from the gas inlet is an energy medium, which penetrates the crushed solid in the upper part of the dissolution component and transfers heat, and then is discharged from the gas outlet of the lower part of the dissolution component. The dissolved solution enters the lower part of the dissolution component through the filter element, and the solution is retained in sections to obtain solutions of different concentrations, thereby realizing the freeze concentration of the dilute solution. The above device improves the effect and efficiency of dissolution and separation by crushing the frozen material (solid or solid-liquid mixture) and allowing the gas of the energy medium to penetrate the crushed frozen material, thereby improving the effect and efficiency of freeze concentration. However, in the freeze concentration process, the device needs to perform an independent crushing process on the frozen material before dissolving and separating it, which increases the difficulty of operation. When concentrating a high-concentration solution, it is often necessary to operate at a deep low temperature. Under low temperature conditions (especially under deep low temperature conditions), each additional link will increase the complexity of the operation. Moreover, the increase in operating links will also lead to more complex difficulties when performing multi-stage freeze concentration combinations or the automated control design of freeze concentration devices. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the main purpose of the present invention is to provide a freezing concentration device.

[0006] According to one aspect of the present invention, the present invention provides the following technical solution: A freeze concentration device, comprising: a freeze-thaw component, a gas processing component, and a gas-liquid separation device; The freezing and thawing assembly comprises a container, a container cover, a gas guide hole arranged on the container cover, and a gas-liquid mixture outlet arranged on the bottom of the container; The gas processing component is connected to the container, and it squeezes and crushes the frozen material in the container through high gas pressure (positive high pressure or negative high pressure of gas), and it provides energy medium gas to transfer heat to the frozen material in the container; this avoids independent crushing operations in other devices, which not only improves operating efficiency, but also facilitates automated design and operation.

[0007] The gas-liquid separation device is connected to the outlet of the gas-liquid mixture to perform gas-liquid separation on the outflowing gas-liquid mixture; The dilute solution is frozen into a solid or solid-liquid mixed frozen material in the freeze-thaw component. The gas processing component provides high gas pressure (positive or negative gas pressure) to the container to squeeze and crush the frozen material inside, and then uses energy medium gas to penetrate the frozen material to achieve dissolution and separation. The dissolved solution is retained in sections. The solution that meets the target concentration is retained for use, and the solution that does not meet the target concentration is continued to be frozen and dissolved using the freeze concentration device to achieve concentration of the dilute solution.

[0008] As a preferred embodiment of the freezing concentration device described in the present invention, the gas processing component uses the same device to achieve the supply of high gas pressure (positive high pressure or negative high pressure gas) and energy medium gas.

[0009] As a preferred embodiment of a freezing concentration device described in the present invention, the gas processing component adopts different devices to achieve the supply of high gas pressure (positive high pressure or negative high pressure of gas) and energy medium gas, including a device for achieving high gas pressure (positive high pressure or negative high pressure of gas) and a device for supplying energy medium gas.

[0010] As a preferred embodiment of the freezing concentration device described in the present invention, the gas processing component is connected to the container, and the high gas pressure (positive high pressure or negative high pressure) provided by it extrude and crush the frozen material in the container. Specifically, the positive high pressure of the gas is formed by introducing high-pressure gas to extrude and crush the frozen material in the container, or the negative high pressure of the gas is formed by negative pressure extraction to extrude and crush the frozen material in the container.

[0011] As a preferred embodiment of a freezing concentration device described in the present invention, the gas processing component includes a power fan and a gas drying device connected in sequence; the gas drying device is connected to the gas-liquid separation device, and the power fan is connected to the container.

[0012] As a preferred embodiment of the freezing concentration device described in the present invention, the gas processing assembly further includes a gas heating device, and the gas heating device is located between the power fan and the gas drying device.

[0013] As a preferred embodiment of the freezing concentration device described in the present invention, the gas processing assembly further includes a high-pressure gas device, and the high-pressure gas device is connected to the container.

[0014] As a preferred embodiment of the freezing concentration device described in the present invention, the gas processing component is a negative pressure extraction device; the negative pressure extraction device is connected to the gas-liquid separation device.

[0015] As a preferred embodiment of the freeze concentration device described in the present invention, the solution is retained in stages through a gas-liquid separation device, and the solution that meets the target concentration is retained for use, and the solution that does not meet the target concentration is continued to be frozen and dissolved using the freeze concentration device to achieve concentration of the dilute solution.

[0016] As a preferred embodiment of the freezing and concentrating device described in the present invention, a protective device is also provided at the outlet of the gas-liquid mixture.

[0017] As a preferred embodiment of the freezing concentration device described in the present invention, a container bottom cover is also provided at the bottom of the container.

[0018] As a preferred embodiment of the freezing concentration device described in the present invention, the energy medium gas is a gas that does not interfere with the dissolution and separation of the freezing material, such as air, inert gas, carbon dioxide gas, nitrogen, etc.

[0019] According to another aspect of the present invention, the present invention provides the following technical solution: The above-mentioned freezing concentration device is used in the fields of food, cosmetics, biomedicine, petrochemical industry, metal processing, environmental protection processing, etc.

[0020] The above-mentioned freezing and concentrating device is used in the fields of milk, vinegar (including vinegar-containing food, vinegar beverages, condiments, etc.), wine, beverages (such as juice, coffee, tea, soy milk, soy milk, etc.), chemical liquid, Chinese herbal medicine liquid, plant extract, petroleum purification, chemical purification, metal separation and purification, seawater purification, wastewater treatment, etc.

[0021] An application of the above-mentioned freezing concentration device in the field of freezing concentration and separation and purification of heat-sensitive raw materials.

[0022] The above-mentioned freezing concentration device is used in the fields of freezing concentration and separation and purification of milk, vinegar (including vinegar-containing food, vinegar beverages, condiments, etc.), wine, beverages (such as juice, coffee, tea, soy milk, soy milk, etc.), chemical liquid, Chinese herbal medicine liquid, plant extract, petroleum purification, chemical purification, metal separation and purification, seawater purification, wastewater treatment, etc.

[0023] The beneficial effects of the present invention are as follows: The present invention proposes a freezing concentration device, comprising a freezing and dissolving component, a gas processing component, and a gas-liquid separation device; the freezing and dissolving component comprises a container, a container upper cover, a gas guide hole arranged on the container upper cover, and a gas-liquid mixture outlet arranged on the bottom of the container; the gas processing component is connected to the container, and the high gas pressure (positive gas high pressure or negative gas high pressure) provided by it extrude and crush the frozen material in the container, and the energy medium gas provided by it transfers heat to the frozen material in the container; the gas-liquid separation device is connected to the gas-liquid mixture outlet, and performs gas-liquid separation on the outflowing gas-liquid mixture; the dilute solution is frozen into a solid or solid-liquid mixed frozen material in the freezing and dissolving component, and the high gas pressure (positive gas high pressure or negative gas high pressure) provided by the gas processing component is used to extrude and crush the frozen material in the container, and then the energy medium gas is used to penetrate the frozen material to achieve dissolution and separation, and the dissolved solution is retained in sections, and the solution that meets the target concentration is retained for standby use, and the solution that does not meet the target concentration is continuously frozen and dissolved using the freezing and dissolving device to achieve concentration of the dilute solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a schematic structural diagram of the freeze concentration device of the present invention.

[0026] In the figure, 1-container, 2-container upper cover, 3-container bottom cover, 4-refrigerated material, 5-gas guide hole, 6-gas-liquid mixture outlet, 7-protection device, 8-protection device switch, 9-filtering device, 10-insulating layer, 11-high-pressure gas device, 12, 13-valves, 14-power fan, 15-gas heating device, 16-gas drying device, 17-gas-liquid separation device, 18-concentrated solution outlet valve, 19-energy medium gas.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example like Figure 1 As shown, the present invention provides a freeze concentration device, including: a freeze-thaw component, a gas processing component, and a gas-liquid separation device; The freeze-thaw assembly comprises a container 1, a container cover 2, a gas guide hole 5 arranged on the container cover 2, and a gas-liquid mixture outlet 6 arranged at the bottom of the container 1; The gas processing assembly is connected to the container 1, and the high gas pressure provided by the gas processing assembly squeezes and breaks the frozen material 4 in the container 1, and the energy medium gas 19 provided by the gas processing assembly transfers heat to the frozen material 4 in the container 1; The gas-liquid separation device 17 is connected to the gas-liquid mixture outlet 6 to perform gas-liquid separation on the outflowing gas-liquid mixture; The dilute solution is frozen into a solid or solid-liquid mixed frozen material 4 in the freezing and dissolving component. After the high air pressure of the gas processing component squeezes and crushes the frozen material 4 in the container 1, the energy medium gas 19 is used to penetrate the frozen material 4 to achieve dissolution and separation, and the dissolved solution is retained in sections. The solution that meets the target concentration is retained for use, and the solution that does not meet the target concentration is continued to be frozen and dissolved using the freezing concentration device to achieve concentration of the dilute solution.

[0030] In one embodiment of the present invention, the gas processing assembly uses the same device to achieve the supply of high pressure and energy medium gas 19.

[0031] In one embodiment of the present invention, the gas processing assembly includes a power fan 14, and by adjusting its connection mode and power, etc., it can be used as a dual-function device to achieve the supply of high pressure and energy medium gas 19.

[0032] In one embodiment of the present invention, the gas processing component also includes a gas heating device 15 and a gas drying device 16; and the gas drying device 16 is connected to the gas-liquid separation device 17, and the power fan 14 is connected to the container 1; the gas heating device 15 is located between the gas drying device 16 and the power fan 14.

[0033] In one embodiment of the present invention, the dissolved solution is retained in sections by the gas-liquid separation device 17, and the solution that meets the target concentration is retained for use, and the solution that does not meet the target concentration is further frozen and dissolved using the freeze concentration device to achieve concentration of the dilute solution.

[0034] In one embodiment of the present invention, the gas-liquid mixture outlet 6 is further provided with a protection device 7 .

[0035] In one embodiment of the present invention, a container bottom cover 3 is further provided at the bottom of the container 1 .

[0036] In one embodiment of the present invention, the energy medium gas 19 is a gas that does not interfere with the dissolution and separation of the frozen material, for example, it can be air, inert gas, carbon dioxide gas, nitrogen gas, etc.

[0037] In one embodiment of the present invention, the gas processing component uses different devices to achieve the supply of high pressure and energy medium gas 19, including a device for achieving high pressure supply and a device for supplying energy medium gas 19. Specifically, the device for achieving high pressure supply is a high pressure gas device 11, and the device for achieving energy medium gas 19 supply is an energy medium gas processing system; the high pressure gas device 11 is connected to the container 1, and the high pressure gas provided by it forms a positive high pressure gas to squeeze and crush the frozen material 4 in the container 1; the energy medium gas processing system is connected to the container 1, and the energy medium gas 19 provided by the energy medium gas processing system provides heat to the frozen material 4 in the container 1; the dilute solution is frozen into a solid or solid-liquid mixed frozen material 4 in the freezing and dissolving component, and the high pressure gas in the high pressure gas device 11 forms a positive high pressure gas to squeeze and crush the frozen material 4 in the container 1, and the energy medium gas 19 provided by the energy medium gas processing system is used to penetrate the frozen material 4 to achieve dissolution and separation, and the dissolved solution is retained in stages, and the solution that meets the target concentration is retained for standby use, and the solution that does not meet the target concentration is continuously frozen and dissolved using the freezing concentration device to achieve concentration of the dilute solution.

[0038] like Figure 1As shown, the freezing concentration device (gas processing component adopts different devices to realize the supply of high pressure and energy medium gas 19, including a device for realizing high pressure and a device for supplying energy medium gas 19. Specifically, the device for realizing high pressure is a high pressure gas device 11, and the device for realizing the supply of energy medium gas 19 is an energy medium gas processing system, and the energy medium gas processing system sequentially includes a gas drying device 16, a gas heating device 15, and a power fan 14, and the gas drying device 16 is connected to the gas-liquid separation device 17, and the power fan 14 When in use, open the upper cover 2 of the freeze-thaw assembly container 1, lock the protection device 7 through the protection device switch 8, then inject the dilute solution into the container 1, and cover the upper cover 2 of the container; send the freeze-thaw assembly into the freezing equipment, and when the dilute solution is frozen into a solid or solid-liquid mixed frozen material 4 in the freeze-thaw assembly, move the freeze-thaw assembly out of the freezing equipment; through the gas guide hole 5 set on the upper cover 2 of the container and the gas-liquid mixture outlet 6 set at the bottom of the container, the freeze concentration assembly is respectively connected to the high-pressure gas device 11 and the energy The medium processing system and the gas-liquid separation device 17 are connected; after opening the valve (for example, a gas gate valve) 12 and closing the valve (for example, a gas gate valve) 13, high-pressure gas is provided to the container 1 through the high-pressure gas device 11, so that the frozen material 4 therein is squeezed and broken; the high-pressure gas device 11 and the valve 12 are closed, and the valve 13 is opened; the protection device 7 is opened through the protection device switch 8; the energy medium gas processing system is started, so that the dry energy medium gas 19 enters the container 1 and penetrates the frozen material 4; the gas-liquid mixture is separated into gas and liquid in the gas-liquid separation device 17; the gas separated and processed from the gas-liquid separation device 17 is dried by the gas drying device 16 of the energy medium gas processing system, and then heated to a set temperature in the gas heating device 15, and is sent into the container 1 by the power fan 14, and continues to circulate and penetrate the frozen material 4 to transfer heat; the dissolved solution is retained in sections from the concentrated solution outlet valve 18 of the gas-liquid separation device 17, and the solution that meets the target concentration is retained for standby use, and the solution that does not meet the target concentration is continuously frozen and dissolved using the freezing concentration device to achieve dilute solution concentration.

[0039] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A freeze concentration device, characterized in that: include: Freeze-thaw components, gas processing components, gas-liquid separation devices; The freezing and thawing assembly comprises a container, a container cover, a gas guide hole arranged on the container cover, and a gas-liquid mixture outlet arranged on the bottom of the container; The gas processing component is connected to the container, and uses high gas pressure to squeeze and crush the frozen material in the container, and provides energy medium gas to transfer heat to the frozen material in the container; The gas-liquid separation device is connected to the outlet of the gas-liquid mixture to perform gas-liquid separation on the outflowing gas-liquid mixture; The dilute solution is frozen into a solid or solid-liquid mixed frozen material in the freeze-thaw component. The gas processing component provides high air pressure to the container to squeeze and crush the frozen material inside, and then uses energy medium gas to penetrate the frozen material to achieve dissolution and separation. The dissolved solution is retained in sections. The solution that meets the target concentration is retained for use, and the solution that does not meet the target concentration is continued to be frozen and dissolved using the freeze concentration device to achieve concentration of the dilute solution.

2. The freeze concentration device according to claim 1, characterized in that: The gas handling components use the same device to achieve the supply of high pressure and energy medium gas.

3. The freeze concentration device according to claim 1, characterized in that: The gas processing component adopts different devices to realize the supply of high gas pressure and energy medium gas, including a device for realizing high gas pressure and a device for supplying energy medium gas.

4. The freeze concentration device according to claim 1, characterized in that: The gas processing component comprises a power fan and a gas drying device which are connected in sequence; the gas drying device is connected to the gas-liquid separation device, and the power fan is connected to the container.

5. The freeze concentration device according to claim 1, characterized in that: The gas processing component is a negative pressure extraction device, and the negative pressure extraction device is connected to the gas-liquid separation device.

6. The freeze concentration device according to claim 1, characterized in that: The solution is retained in stages through the gas-liquid separation device, and the solution that meets the target concentration is retained for use. The solution that does not meet the target concentration is further frozen and dissolved using the freeze concentration device to achieve concentration of the dilute solution.

7. The freeze concentration device according to claim 1, characterized in that: The gas-liquid mixture outlet is also provided with a protection device.

8. The freeze concentration device according to claim 1, characterized in that: A container bottom cover is also arranged at the bottom of the container.

9. The freeze concentration device according to claim 1, characterized in that: The energy medium gas is a gas that does not interfere with the dissolution and separation of the cryogenic material.

10. Application of the freezing concentration device according to any one of claims 1 to 9 in the fields of food, cosmetics, biomedicine, petrochemicals, metal processing, and environmental protection processing.

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