Novel drying circulation system

Abstract

The utility model relates to a novel drying circulation system which comprises a storage tank, a drying circulation pump, a drying unit, a condensation backflow device and a receiving groove, the drying circulation pump is connected with the storage tank, the drying unit is connected with the drying circulation pump, the condensation backflow device is connected with the drying unit, and the two ends of the drying unit are detachably connected with a pipeline. The receiving tank is connected with the condensation backflow device through a pipeline, a drying agent is placed in the drying unit, and a steam heating system is arranged in the drying unit; materials are put into the storage tank, the drying circulating pump pumps the materials into the drying unit to be dried, when a drying agent is replaced, a pipeline between the drying circulating pump and the drying unit is closed, a pipeline between the drying unit and the condensation backflow device is opened, and the steam heating system heats the drying unit to distill residual materials on the drying agent. And after the materials are recycled, the drying unit is detached, the drying agent is replaced, and the effect of reducing the material loss is achieved.

Description

Technical Field

[0001] The present application relates to the field of circulating drying devices, and in particular to a novel drying circulating system. Background Art

[0002] Drying is a very important part of chemical production. The purpose of drying is to make materials easier to store, transport and use, or to meet the needs of further processing.

[0003] In the process of liquid drying, desiccants are usually used to circulate and dry the liquid. The principle of cyclic drying is based on the affinity of desiccants for water. These materials have a large specific surface area and can absorb and store a large amount of water.

[0004] In the cycle drying, the desiccant will become inactivated after being used for a period of time and needs to be replaced. However, due to the special properties of the material to be dried, such as its unique volatility, toxicity, and inability to come into contact with water or air, and some material remaining on the desiccant, the material cannot be recycled. Directly replacing the desiccant will cause a large amount of material loss. Utility Model Content

[0005] In order to solve the problem that the residual material on the desiccant cannot be recycled and directly replacing the desiccant leads to material loss, the present application provides a novel drying circulation system.

[0006] A novel drying cycle system provided in this application adopts the following technical solution:

[0007] A novel drying circulation system comprises a storage tank, a drying circulation pump, a drying unit, a condenser reflux device and a receiving tank, wherein the drying circulation pump is connected to the storage tank via a pipeline, the drying unit is connected to the drying circulation pump via a pipeline, the condenser reflux device is connected to the drying unit via a pipeline, both ends of the drying unit are detachably connected to the pipeline, the receiving tank is connected to the condenser reflux device via a pipeline, a desiccant is placed in the drying unit, and a steam heating system is provided in the drying unit.

[0008] By adopting the above technical solution, the material to be dried is put into the storage tank, and the drying circulation pump pumps the material into the drying unit to fully contact the desiccant for circulating drying. After the drying is completed, the material is taken out. When the material drying fails to meet the standard for a long time, the desiccant in the drying unit needs to be replaced. At this time, the pipeline between the drying circulation pump and the drying unit is closed, and the pipeline between the drying unit and the condenser reflux device is opened. The steam heating system heats the drying unit, and the residual material on the desiccant is distilled, condensed by the condenser reflux device, and collected in the receiving tank. When the material recovery is completed, the drying unit is disassembled and the desiccant is replaced. When the desiccant is replaced, the material has been recovered, thereby reducing the loss of the material.

[0009] Optionally, the drying unit includes a dryer, in which a heating layer and a drying layer are provided, the drying layer is provided inside the dryer, the heating layer is provided inside the dryer and is located outside the drying layer, the desiccant is placed at the drying layer of the dryer, and the steam heating system is provided at the heating layer of the dryer.

[0010] By adopting the above technical solution, the material enters the inner side of the drying layer in the dryer and is dried after fully contacting with the desiccant in the drying layer. When the material on the desiccant is collected, the steam heating system of the heating layer heats the material and distills the material attached to the desiccant.

[0011] Optionally, the dryer is provided with a normal temperature water circulation system at the heating layer.

[0012] By adopting the above technical solution, the normal temperature water circulation system cools down the drying layer, making it easy to disassemble the dryer and replace the desiccant.

[0013] Optionally, a circulating drying sight glass is provided on the dryer, and the circulating drying sight glass is connected to the storage tank.

[0014] By adopting the above technical solution, the drying condition of the material is monitored through the circulating drying sight glass, and the moisture content of the material is tested when there is no flow in the drying sight glass.

[0015] Optionally, the dryer is provided with a heat-insulating layer at the outermost layer.

[0016] By adopting the above technical solution, the thermal insulation layer insulates the heating layer and reduces heat loss.

[0017] Optionally, a refrigeration circulating water system is provided in the condenser reflux device.

[0018] By adopting the above technical solution, the material is distilled after being heated, the refrigerated circulating water system cools the material, and the condensed material is collected in a receiving tank.

[0019] Optionally, a receiving tank flow sight glass is provided on the receiving tank, and the receiving tank flow sight glass is connected to the condensing reflux device.

[0020] By adopting the above technical solution, the material reflux collection situation is monitored through the flow sight glass of the receiving tank. When no liquid flows down, it is considered that there is no material remaining in the dryer.

[0021] Optionally, both ends of the dryer are connected to the pipeline via connecting flanges.

[0022] By adopting the above technical solution, the connecting flange connects the dryer to the pipeline, and the connection seal between the dryer and the pipeline is better, which is convenient for disassembly.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The material to be dried is put into the storage tank, and the drying circulation pump pumps the material into the drying unit for circulation drying. When the material drying fails to meet the standard for a long time, the desiccant in the drying unit needs to be replaced. The bottom pipeline of the drying unit is closed, and the pipeline between the drying unit and the condenser reflux device is opened. The steam heating system distills the residual material in the drying unit, and the residual material is condensed by the condenser reflux device and collected in the receiving tank. When the material is recovered, the drying unit is disassembled and the desiccant is replaced. When the desiccant is replaced, the material has been recovered, which reduces the loss of the material. At the same time, for products with high moisture requirements, the risk of contaminating the pipeline is reduced, and the environmental pollution caused by the discharge of liquid in the desiccant is also prevented;

[0025] 2. The insulation layer insulates the heating layer to reduce heat loss;

[0026] 3. The dryer and the pipeline are connected by a connecting flange, which has good sealing and is easy to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of this application.

[0028] Figure 2 is a cross-sectional view of the drying unit of the present application.

[0029] Those skilled in the art will appreciate that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be magnified relative to other elements to help improve understanding of the embodiments of the present invention.

[0030] Figure numerals: 1. Storage tank; 2. Drying circulation pump; 3. Dryer; 301. Connecting flange; 303. Steam inlet; 304. Steam drainage outlet; 305. Normal temperature cooling water inlet; 306. Normal temperature cooling water outlet; 307. Insulation layer; 308. Heating layer; 309. Drying layer; 4. Circulating drying sight glass; 5. Condensation reflux device; 501. Refrigerated circulating water inlet; 502. Refrigerated circulating water outlet; 6. Receiving tank; 7. Receiving tank flow sight glass. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The present application discloses a novel drying cycle system. Figure 1 , including a storage tank 1, a drying circulation pump 2, a drying unit, a condensing reflux device 5 and a receiving tank 6. The drying circulation pump 2 is connected to the storage tank 1 through a pipeline, the drying unit is connected to the drying circulation pump 2 through a pipeline, the condensing reflux device 5 is connected to the drying unit through a pipeline, and the receiving tank 6 is connected to the condensing reflux device 5 through a pipeline. Valves are provided on each pipeline.

[0033] Reference Figure 1 and Figure 2 The drying unit includes a dryer 3, which is provided with a three-layer structure, which is a heat preservation layer 307, a heating layer 308 and a drying layer 309 from the outside to the inside. The dryer 3 is located in the drying layer 309 and a solid desiccant is placed. During drying, the material to be dried is put into the storage tank 1, the valve of the pipeline between the dryer 3 and the condenser reflux device 5 is closed, and the valve of the pipeline between the drying circulation pump 2 and the storage tank 1 is opened. The drying circulation pump 2 pumps the material into the drying layer 309 of the dryer 3 through the pipeline to fully contact the desiccant and then circulate and dry it.

[0034] Reference Figure 1 A three-way pipe is provided at the upper end of the dryer 3, and a circulating drying sight glass 4 is provided on the storage tank 1. The three-way pipe is connected to the condensing reflux device 5 and the circulating drying sight glass 4 respectively, and the drying condition of the material is monitored through the circulating drying sight glass 4. After drying for a period of time, samples are taken from the valve under the drying circulation pump 2 for moisture analysis. If the moisture content is qualified, it can be taken out of the tank and the drying operation is repeated.

[0035] Reference Figure 1 and Figure 2 When the material drying fails to meet the standard for a long time, the desiccant is deactivated and needs to be replaced. Close the valve between the storage tank 1 and the drying circulation pump 2, open the valve under the drying circulation pump 2 to collect the materials remaining in the pipeline and the dryer 3, and complete the partial material recovery.

[0036] Reference Figure 1 and Figure 2, the dryer 3 is provided with a steam heating system at the heating layer 308, a steam inlet 303 is provided on the upper side of the heating layer 308, and a steam drainage outlet 304 is provided on the lower side of the heating layer 308. A vent is provided at the upper end of the condenser reflux 5, a refrigerated circulating water system is provided in the condenser reflux 5, and refrigerated circulating water inlets 501 and refrigerated circulating water outlets 502 are provided on opposite sides of the condenser reflux 5. Close the valve between the drying circulation pump 2 and the dryer 3, open the valve between the dryer 3 and the condenser reflux 5, open the refrigerated circulating water inlet 501 and refrigerated circulating water outlet 502 of the condenser reflux 5, ensure that the temperature difference between the condenser reflux 5 and the boiling point of the material is greater than 50 degrees, open the steam inlet 303 and the steam drainage outlet 304, heat and distill the residual material on the desiccant in the drying layer 309, and condense and collect it in the receiving tank 6 through the condenser reflux 5.

[0037] Reference Figure 1 A receiving tank flow sight glass 7 is provided on the receiving tank 6, and one side of the receiving tank flow sight glass 7 is connected to the condenser reflux device 5. The material reflux collection situation is monitored through the receiving tank flow sight glass 7. When no liquid flows down, it is considered that there is no material remaining in the dryer 3.

[0038] Reference Figure 2 The dryer 3 is provided with a normal temperature water circulation system at the heating layer 308, a normal temperature cooling water inlet 305 is provided at the lower side of the heating layer 308, and a normal temperature cooling water outlet 306 is provided at the upper side of the heating layer 308. Both ends of the dryer 3 are connected to the pipeline through the connecting flange 301. After the material collection is completed, the steam heating system is turned off, the normal temperature cooling water outlet 306 and the normal temperature cooling water inlet 305 are opened to cool the dryer 3, and the dryer 3 is dismantled through the connecting flanges 301 at both ends to replace the desiccant.

[0039] The implementation principle of a novel drying circulation system in an embodiment of the present application is: open the vent at the upper end of the condenser reflux device 5, pump the material into the storage tank 1, close the valve between the dryer 3 and the condenser reflux device 5, open the valve between the storage tank 1 and the drying circulation pump 2, open the drying circulation pump 2, pump the material into the dryer 3 to fully contact with the desiccant in the dryer 3, observe the drying condition through the circulating drying sight glass 4, and after drying for a period of time, take samples from the sampling port under the drying circulation pump 2 to analyze the moisture content. If qualified, the sample can be taken out of the tank and the drying operation is repeated.

[0040] If the moisture content is still unqualified after a long period of cyclic drying, it is judged that the solid desiccant is deactivated and needs to be replaced. Turn off the drying circulation pump 2, open the valve between the dryer 3 and the condenser reflux 5, close the valve between the storage tank 1 and the drying circulation pump 2, open the valve under the drying circulation pump 2 to collect the remaining materials in the pipeline and the dryer 3, and close the valve between the drying circulation pump 2 and the dryer 3 after the collection is completed.

[0041] Open the valve of the balancing pipe between the receiving tank 6 and the vent, open the refrigerated circulating water inlet 501 and the refrigerated circulating water outlet 502 of the condenser reflux device 5, open the steam drainage outlet 304 and the steam inlet 303, heat up the drying layer 309 of the dryer 3, distill the materials remaining on the desiccant and the drying layer 309, condense them through the condenser reflux device 5 and collect them in the receiving tank 6 until the valve between the receiving tank 6 and the receiving tank flow sight glass 7 is closed. When no liquid flows down in the receiving tank flow sight glass 7, it is considered that there is no material remaining in the dryer 3.

[0042] After completing the material recovery, close the steam inlet 303 and the steam drainage outlet 304, open the normal temperature cooling water outlet 306 and the normal temperature cooling water inlet 305, cool the dryer 3 with normal temperature water, close the refrigeration cycle in the condenser reflux device 5, and after the dryer 3 is cooled, disassemble the dryer 3 through the connecting flange 301, replace the desiccant, and then install the dryer 3 through the connecting flange 301 to facilitate subsequent drying operations.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A novel drying circulation system, comprising a storage tank (1), a drying circulation pump (2), a drying unit, a condenser reflux device (5) and a receiving tank (6), characterized in that: The drying circulation pump (2) is connected to the material storage tank (1) via a pipeline, the drying unit is connected to the drying circulation pump (2) via a pipeline, the condenser reflux device (5) is connected to the drying unit via a pipeline, both ends of the drying unit are detachably connected to the pipeline, the receiving tank (6) is connected to the condenser reflux device (5) via a pipeline, a desiccant is placed in the drying unit, and a steam heating system is provided in the drying unit.

2. A novel drying cycle system according to claim 1, characterized in that: The drying unit comprises a dryer (3), wherein a heating layer (308) and a drying layer (309) are arranged in the dryer (3), wherein the drying layer (309) is arranged inside the dryer (3), wherein the heating layer (308) is arranged inside the dryer (3) and outside the drying layer (309), wherein the desiccant is placed at the drying layer (309) of the dryer (3), and wherein the steam heating system is arranged at the heating layer (308) of the dryer (3).

3. A novel drying cycle system according to claim 2, characterized in that: The dryer (3) is provided with a normal temperature water circulation system at the heating layer (308).

4. A novel drying cycle system according to claim 2, characterized in that: The dryer (3) is provided with a circulating drying sight glass (4), and the circulating drying sight glass (4) is connected to the material storage tank (1).

5. A novel drying cycle system according to claim 2, characterized in that: The dryer (3) is provided with a heat-insulating layer (307) at the outermost layer.

6. A novel drying cycle system according to claim 1, characterized in that: A refrigeration circulating water system is provided in the condenser reflux device (5).

7. A novel drying cycle system according to claim 1, characterized in that: The receiving tank (6) is provided with a receiving tank flow sight glass (7), and the receiving tank flow sight glass (7) is connected to the condenser reflux device (5).

8. A novel drying cycle system according to claim 2, characterized in that: Both ends of the dryer (3) are connected to the pipeline via connecting flanges (301).

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