Ethanol recycling type embedding process system

Abstract

The utility model relates to an ethanol recycling type embedding process system which comprises a first ethanol phase batching tank, a second ethanol phase batching tank and a water phase batching tank which are sequentially connected from top to bottom through a vertical pipeline, and a flow guide pipe is arranged at the lower part of the vertical pipeline and extends to the inner wall side of an adjacent material tank; a discharge port of the water phase batching tank is connected with a feed port of a first homogenizer through a centrifugal pump, a discharge port of the first homogenizer is connected with a rectifying tower, the upper part of the rectifying tower is connected with a first condenser, the first condenser is connected with an ethanol discharge tank, the lower part of the rectifying tower is connected with a second condenser, and the lower part of the second condenser is connected with a product storage tank; the second condenser is connected with a second homogenizer through a material pump, and an outlet of the second homogenizer is connected with the spray drying tower. The device disclosed by the utility model is scientific in design and reasonable in structure, can effectively improve the ethanol dissolving efficiency, reduce the energy consumption of the system and realize efficient recycling of ethanol, and is suitable for popularization and application in various embedding processes.

Description

Technical Field

[0001] The utility model belongs to the field of chemical equipment, relates to an embedding technology, and in particular to an ethanol recycling embedding process system. Background Technique

[0002] The embedding technology refers to the process of using an embedding agent to wrap the material powder or other bulk structures to be embedded to provide performance support or chemical protection. The embedding technology has a wide range of applications in multiple professional fields. Ethanol, as an organic solvent, is widely used in the embedding process. Especially in the industrial production process, there are two technical problems in the use of ethanol:

[0003] 1. The dissolution efficiency of ethanol is low, that is, the structure of the ethanol-phase batching tank in the prior art is single, and a material pump needs to be used in cooperation with high-power output, resulting in excessive energy loss and the phenomenon of solvent top-off, which affects the effect of forming nanoparticles of the material.

[0004] 2. The recycling of ethanol, that is, in the prior art, ethanol needs to be removed during the distillation of the embedded product, and the ethanol recovery rate of the distillation column in the prior art is low, resulting in a large amount of waste of ethanol as a solvent in the embedding process. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and design an ethanol recycling embedding process system with reasonable structure and scientific design, which can effectively improve the dissolution efficiency of ethanol, reduce the energy consumption of the system and realize the high-efficiency recycling of ethanol.

[0006] The utility model solves its technical problems by adopting the following technical solutions:

[0007] An ethanol recycling embedding process system includes a first ethanol-phase batching tank, a second ethanol-phase batching tank and an aqueous-phase batching tank. Among them, the first ethanol-phase batching tank, the second ethanol-phase batching tank and the aqueous-phase batching tank are sequentially connected by vertical pipelines from top to bottom. A diversion pipe is arranged at the lower part of the vertical pipeline and extends to the inner wall side of the adjacent material tank. Flow regulating valves are arranged on the vertical pipelines. The discharge port of the aqueous-phase batching tank is connected to the inlet of the first homogenizer through a centrifugal pump. The discharge port of the first homogenizer is connected to a distillation column. The upper part of the distillation column is connected to a first condenser, and the first condenser is connected to an ethanol discharge tank. The lower part of the distillation column is connected to a second condenser. The lower part of the second condenser is connected to a product storage tank. The second condenser is connected to a second homogenizer through a material pump. The outlet of the second homogenizer is connected to a spray drying tower.

[0008] Moreover, the rectifying column includes a column body, on one side of which there is a feed inlet connected to the discharge outlet of the first homogenizer. On the other side of the column body, there are a steam inlet and a steam outlet. At the upper part of the column body, there is a gas outlet connected to the inlet of the first condenser. At the lower part of the column body, a discharge outlet is led out through a connecting pipe and connected to the inlet of the second condenser.

[0009] Moreover, several tray tower plate groups are arranged in the column body. The tray tower plate group includes a tray, an overflow weir and a downcomer. The overflow weir is vertically arranged on the upper surface of the tray, and the downcomer is arranged on the lower surface of the tray. The downcomer of the upper tray tower plate group is in contact with the overflow weir of the lower tray tower plate group, that is, several tray tower plate groups are combined and welded in the column body in sequence.

[0010] Moreover, in the tray tower plate group, the radius of the tray is 250 mm, the number of holes is 659, the diameter of each hole is 5 mm, and the opening area is 4 mm 2 , the distance between two trays is 450 mm, the height of the overflow weir is 27 mm, and the distance between the downcomer and the tray is 17 mm.

[0011] Moreover, the material of the tray tower plate group is 316 stainless steel.

[0012] Moreover, the first ethanol-phase batching tank, the second ethanol-phase batching tank and the water-phase batching tank are all provided with heating jackets and in-tank stirring devices.

[0013] Moreover, a steam trap is arranged at the heating outlet of the water-phase batching tank.

[0014] Moreover, the first ethanol-phase batching tank, the second ethanol-phase batching tank and the water-phase batching tank are all provided with vacuum pumps.

[0015] Moreover, a demister is arranged below the gas outlet inside the column body of the rectifying column.

[0016] Moreover, a reboiler is also arranged at the end of the discharge outlet on the outer side of the lower part of the column body.

[0017] The advantages and positive effects of the present utility model are:

[0018] 1. In the raw material dissolution stage of the embedding technology, the first ethanol-phase batching tank, the second ethanol-phase batching tank and the water-phase batching tank are connected in sequence from top to bottom through vertical pipes. At the lower part of each vertical pipe, a diversion pipe is arranged extending to the inner wall side of the adjacent batching tank. This structure is set so that the liquid material can flow to the lower batching tank by its own weight, reducing the use of material pumps, thereby avoiding excessive energy loss and the phenomenon of solvent pushing materials, and realizing the embedding of nutrients by the wall material.

[0019] 2. There are several groups of tray tower plates installed inside the distillation column of this system. The radius of the tray is 250 mm, the number of holes is 659, the diameter of each hole is 5 mm, and the opening area is 4 mm 2 , and the distance between two trays is 450 mm. That is, the holes on the trays form the main passage for gas, enabling full mass transfer between gas and liquid. The downcomer is the main passage for the fluid, and the overflow weir can effectively control the residence time of the fluid on the tray. This system realizes full contact and mass transfer between gas and liquid phases through the structure and parameter settings of the trays, overflow weirs, and downcomers, thereby achieving effective separation of ethanol and water, with an ethanol recovery rate as high as 99.9%.

[0020] 3. The first ethanol-phase batching tank, the second ethanol-phase batching tank, and the water-phase batching tank in this system are all equipped with heating jackets and in-tank stirring devices to control the heating temperature for facilitating the dissolution of materials in the ethanol solvent. Meanwhile, the steam flow is controlled by a flow regulating valve installed on the vertical pipeline. A steam trap is set at the heating outlet of the water-phase batching tank to maximize the utilization of the heat in the steam and discharge the condensed water.

[0021] 4. A reboiler is also installed at the outer side of the lower part of the distillation column of this system at the end of the discharge port, which is set when the product at the bottom outlet of the distillation column does not meet the requirements, enabling the material to return to the distillation column again. A demister is installed on the lower side of the gas outlet inside the distillation column tower body to eliminate the droplets entrained by the gas velocity out of the tower. Description of the Drawings

[0022] Figure 1 is the process system diagram of the present utility model;

[0023] Figure 2 is Figure 1 the structural schematic diagram of the distillation column in

[0024] Figure 3 is Figure 2 the structural schematic diagram of the tray tower plate group in

[0025] Figure 4 is Figure 3 the cross-sectional schematic diagram of the tray in

[0026] Among them, there are a first ethanol-phase batching tank 1, a vertical pipeline 2, a second ethanol-phase batching tank 3, an aqueous-phase batching tank 4, a vacuum pump 5, a diversion pipe 6, a flow regulating valve 7, a steam trap 8, a centrifugal pump 9, a first homogenizer 10, a reboiler 11, a distillation column 12, a first condenser 13, an ethanol discharge tank 14, a second condenser 15, a product storage tank 16, a second homogenizer 17, a spray drying tower 18, a gas outlet 121, a demister 122, a tower body 123, a tray tower plate group 124, a feed inlet 125, a steam inlet 126, a steam exhaust port 127, a gas outlet lead-out connecting pipe 128, a discharge port 129, a tray 1241, an overflow weir 1242, and a downcomer 1243. Specific embodiments

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive and not restrictive, and the protection scope of the present invention cannot be limited thereby.

[0028] An ethanol recycling embedding process system, as Figure 1 shown, includes a first ethanol-phase batching tank 1, a second ethanol-phase batching tank 3, and an aqueous-phase batching tank 4. Among them, the first ethanol-phase batching tank 1, the second ethanol-phase batching tank 3, and the aqueous-phase batching tank 4 are sequentially connected by a vertical pipeline 2 from top to bottom. A diversion pipe 6 is arranged on the lower part of the vertical pipeline 2 extending to the inner wall side of the adjacent batching tank, and a flow regulating valve 7 is arranged on the vertical pipeline 2.

[0029] In this embodiment, the first ethanol-phase batching tank 1 is arranged above the second ethanol-phase batching tank 3, and the aqueous-phase batching tank is arranged below the second ethanol-phase batching tank 3, so that the liquid in the batching tank can flow into the lower batching tank by relying on the self-weight of the liquid through the vertical pipeline 2 and the diversion pipe 6, and is adjusted by adjusting the flow regulating valve 7 to strictly control the concentration of each component of the liquid material, ensuring the accuracy of the final embedding process.

[0030] The first ethanol-phase batching tank 1, the second ethanol-phase batching tank 3, and the aqueous-phase batching tank 4 are all provided with heating jackets and in-tank stirring devices to promote the heating and dissolution of the materials. At the same time, the flow of steam is controlled by the flow regulating valve 7, and a steam trap 8 is arranged at the heating outlet of the aqueous-phase batching tank 4 to maximize the utilization of the heat in the steam and discharge the condensed water. In addition, the first ethanol-phase batching tank 1, the second ethanol-phase batching tank 3, and the aqueous-phase batching tank 4 are all provided with a vacuum pump 5 to achieve vacuum pumping in the batching tank.

[0031] The discharge port of the aqueous-phase batching tank 4 is connected to the feed inlet of the first homogenizer 10 through a centrifugal pump 9. Larger embedding particles are dispersed into smaller nanoparticles under a high pressure of 400 - 500 bar of homogenization pressure to prevent a large amount of precipitation from occurring in the distillation process.

[0032] The discharge port of the first homogenizer 10 is connected to the rectification column 12. The upper part of the rectification column 12 is connected to the first condenser 13, and the first condenser 13 is connected to the ethanol discharge tank 14 to achieve the reuse of ethanol. The lower part of the rectification column 12 is connected to the second condenser 15. The lower part of the second condenser 15 is connected to the product storage tank 16. The second condenser 15 is connected to the second homogenizer 17 through a material pump, and the outlet of the second homogenizer 17 is connected to the spray drying tower 18.

[0033] As Figure 2 shown, the rectification column 12 includes a tower body 123. One side of the tower body 123 is provided with a feed inlet 125, which is connected to the discharge port of the first homogenizer 10. On the other side of the tower body 123, there are a steam inlet 126 and a steam exhaust port 127. At the upper part of the tower body 123, there is a gas outlet 121, which is connected to the inlet of the first condenser 13. At the lower part of the tower body 123, a connecting pipe 128 is led out through the gas outlet and connected to the discharge port 129, and the discharge port 129 is connected to the inlet of the second condenser 15.

[0034] Inside the tower body 123, several tray tower plate groups 124 are arranged. As Figure 3 shown, the tray tower plate group 124 includes a tray 1241, an overflow weir 1242 and a downcomer 1243. The overflow weir 1242 is vertically arranged on the upper surface of the tray 1241, and the downcomer 1243 is arranged on the lower surface of the tray 1241. The downcomer 1243 of the upper tray tower plate group 124 is in contact with the overflow weir 1242 of the lower tray tower plate group 124, that is, several tray tower plate groups 124 are combined and welded inside the tower body 123.

[0035] As Figure 4 shown, the radius of the tray 1241 is 250 mm, the number of holes is 659, the diameter of each hole is 5 mm, and the opening area is 4 mm 2 , the distance between two trays 1241 is 450 mm, the height of the overflow weir 1242 is 27 mm, the distance between the downcomer 1243 and the tray 1241 is 17 mm, and the material of the tray tower plate group 124 is 316 stainless steel.

[0036] In order to avoid the entrainment of droplets by the gas velocity out of the tower, a demister 122 is arranged below the gas outlet 121 inside the tower body 123.

[0037] In order to avoid the non - compliance of the bottom product of the rectification column 12, a reboiler 11 is also arranged at the end of the discharge port 129 on the outer side of the lower part of the tower body 123 to achieve the purpose of returning the material back to the rectification column 12.

[0038] In addition, various valves and pumps are provided in the technical solution and embodiments of the present invention. The rectifying column 12 is provided with a lifting column, a manhole, a reflux pipe, a sampling port, a liquid level gauge interface, etc., which are all conventional settings well-known to those skilled in the art in the prior art and are all schematically shown in the drawings and will not be marked and described in detail again.

[0039] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art can understand that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the content disclosed in the embodiments and drawings.

Claims

1. An ethanol recycling embedding process system, characterized in that: It includes a first ethanol-phase batching tank (1), a second ethanol-phase batching tank (3) and an aqueous-phase batching tank (4). Among them, the first ethanol-phase batching tank (1), the second ethanol-phase batching tank (3) and the aqueous-phase batching tank (4) are sequentially connected by a vertical pipeline (2) from top to bottom. A diversion pipe (6) is arranged at the lower part of the vertical pipeline (2) extending to the inner wall side of the adjacent batching tank. Flow regulating valves (7) are arranged on the vertical pipeline (2). The discharge port of the aqueous-phase batching tank (4) is connected to the feed port of a first homogenizer (10) through a centrifugal pump (9). The discharge port of the first homogenizer (10) is connected to a rectification column (12). The upper part of the rectification column (12) is connected to a first condenser (13), and the first condenser (13) is connected to an ethanol discharge tank (14). The lower part of the rectification column (12) is connected to a second condenser (15). The lower part of the second condenser (15) is connected to a product storage tank (16). The second condenser (15) is connected to a second homogenizer (17) through a material pump. The outlet of the second homogenizer (17) is connected to a spray drying tower (18).

2. The ethanol recycling type embedding process system according to claim 1, wherein: The rectification column (12) includes a tower body (123). A feed port (125) is arranged on one side of the tower body (123), and the feed port (125) is connected to the discharge port of the first homogenizer (10). A steam inlet (126) and a steam exhaust port (127) are arranged on the other side of the tower body (123). A gas outlet (121) is arranged at the upper part of the tower body (123), and the gas outlet (121) is connected to the inlet of the first condenser (13). A discharge port (129) is connected through a connecting pipe (128) led out from a gas outlet at the lower part of the tower body (123) of the rectification column (12), and the discharge port (129) is connected to the inlet of the second condenser (15).

3. The ethanol recycling type embedding process system according to claim 2, characterized in that: A number of tray tower plate groups (124) are arranged in the tower body (123). The tray tower plate group (124) includes a tray (1241), an overflow weir (1242) and a downcomer (1243). The overflow weir (1242) is vertically arranged on the upper surface of the tray (1241). The downcomer (1243) is arranged on the lower surface of the tray (1241). The downcomer (1243) of the upper tray tower plate group (124) is in contact with the overflow weir (1242) of the lower tray tower plate group (124), that is, a number of tray tower plate groups (124) are combined with each other and sequentially welded in the tower body (123).

4. The ethanol recycling type embedding process system according to claim 3, characterized in that: The radius of the tray (1241) in the tray tower plate group (124) is 250 mm, the number of openings is 659, the diameter of each hole is 5 mm, and the opening area is 4 mm 2 , the distance between two trays (1241) is 450 mm, the height of the overflow weir (1242) is 27 mm, and the distance between the downcomer (1243) and the tray (1241) is 17 mm.

5. The ethanol recycling type embedding process system according to claim 3 or 4, characterized in that: The material of the tray tower plate group (124) is 316 stainless steel.

6. The ethanol recycling type embedding process system according to claim 1, characterized in that: The first ethanol-phase batching tank (1), the second ethanol-phase batching tank (3) and the aqueous-phase batching tank (4) are all provided with heating jackets and in-tank stirring devices.

7. The ethanol recycling type embedding process system according to claim 1, characterized in that: A steam trap (8) is arranged at the heating outlet of the aqueous-phase batching tank (4).

8. An ethanol recycling type embedding process system according to claim 1, characterized in that: The first ethanol-phase batching tank (1), the second ethanol-phase batching tank (3) and the aqueous-phase batching tank (4) are all provided with vacuum pumps (5).

9. A kind of ethanol recycling embedding process system according to any one of claims 1-3, characterized in that: A demister (122) is arranged below the gas outlet (121) inside the tower body (123) of the rectification column (12).

10. The ethanol recycling type embedding process system according to claim 9, characterized in that: A reboiler (11) is further arranged at the end of the discharge port (129) on the outer side of the lower part of the tower body (123).

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