Alcohol steam secondary recovery device

Abstract

The utility model discloses an alcohol steam secondary recovery device which comprises a collecting pipe (1) connected with alcohol extraction equipment, a filter (2) used for removing solid waste in alcohol steam is arranged on the rear side of the collecting pipe (1), a first condenser (3) is arranged on the rear side of the filter (2), and the rear side of the first condenser (3) is connected with a first storage tank (4) through a first branch pipe (8). A discharge pipe (5) is arranged at the upper end of the first storage tank (4), an adsorption box (6) is arranged on the rear side of the discharge pipe (5), a second storage tank (7) is arranged on the rear side of the adsorption box (6), the upper end of the second storage tank (7) is connected with a second condenser (11) through a second branch pipe (9), and an alcohol discharge pipe (10) is arranged below the first storage tank (4) and the second storage tank (7). The alcohol recovery device can realize secondary recovery of alcohol and reduce the content of volatile organic compounds in alcohol.

Description

Technical Field

[0001] The utility model relates to a secondary recovery device, in particular to a secondary recovery device for alcohol vapor. Background Art

[0002] The traditional Chinese medicine alcohol extraction technology is a commonly used method for extracting traditional Chinese medicine. It mainly uses alcohol-soluble solvents such as ethanol and methanol to dissolve the effective components in herbs, so as to achieve the purpose of extraction. A large amount of alcohol vapor is generated during the alcohol extraction of herbs. If the first recovery is not thorough, it will cause a large waste of alcohol, and the emission of alcohol vapor will pose certain safety hazards. Therefore, the alcohol vapor is now recovered through a recovery device, which can not only save costs but also reduce safety hazards.

[0003] For example, a vacuum system supporting a traditional Chinese medicine alcohol extraction process concentration device disclosed in the patent with the application number 202321618651.8 previously applied by our company filters the incoming air through a basket filter, and a baffle is provided behind the feed inlet of the basket filter. The impurities in the gas will hit the baffle and fall along the baffle and be discharged from the slag discharge port, avoiding the accumulation of a large amount of impurities on the filter cloth and affecting the filtering effect. The first tube heat exchanger can exchange heat for the gas, not only improving the thermal energy utilization rate but also reducing the gas temperature, which is beneficial to alcohol liquefaction, and the alcohol is collected through a vacuum buffer tank, improving the alcohol recovery utilization rate. However, it is found during use that the alcohol vapor not only contains solid impurities but also some volatile organic compounds, which will affect the recovery and utilization of alcohol. Content of the Utility Model

[0004] The purpose of the utility model is to provide a secondary recovery device for alcohol vapor. It can achieve the secondary recovery of alcohol and reduce the content of volatile organic compounds in alcohol.

[0005] The technical solution of the utility model: The secondary recovery device for alcohol vapor includes a collection pipe connected to an alcohol extraction device. A filter for removing solid waste in the alcohol vapor is provided behind the collection pipe. A first condenser is provided behind the filter. The first condenser is connected to a first storage tank through a first branch pipe. An exhaust pipe is provided at the upper end of the first storage tank. An adsorption box is provided behind the exhaust pipe. A second storage tank is provided behind the adsorption box. The upper end of the second storage tank is connected to a second condenser through a second branch pipe. Alcohol discharge pipes are provided under the first storage tank and the second storage tank. A water supply main pipe for providing chilled water and a water outlet main pipe for discharging chilled water are provided on one side of the first condenser and the second condenser.

[0006] In the aforementioned alcohol vapor secondary recovery device, the adsorption box includes a box body. Inside the box body, there are multiple groups of adsorption plates arranged vertically and staggeredly. On both sides of the adsorption plates, there are connecting strips. At the lower end of the connecting strip, there is a connecting groove, and at the upper end of the connecting strip, there is a limiting protrusion. A sealing gasket is provided between the lower end of the connecting strip and the connecting groove. At the upper end of the box body, there is a pressing rod for pressing the adsorption plates tightly.

[0007] In the aforementioned alcohol vapor secondary recovery device, in the first storage tank, a first liquid level sensor and a second liquid level sensor are successively arranged from top to bottom. At the upper end of the first storage tank, there is a first pneumatic valve for adjusting the air pressure.

[0008] In the aforementioned alcohol vapor secondary recovery device, in the second storage tank, a third liquid level sensor and a fourth liquid level sensor are successively arranged from top to bottom. On the second storage tank, there is a second pneumatic valve for adjusting the air pressure.

[0009] In the aforementioned alcohol vapor secondary recovery device, a third pneumatic valve is provided on the first branch pipe.

[0010] In the aforementioned alcohol vapor secondary recovery device, a fourth pneumatic valve is provided on the second branch pipe.

[0011] Compared with the prior art, in the present utility model, a filter is provided to filter the alcohol vapor entering the first condenser, removing solid impurities in the alcohol vapor. The alcohol vapor will be condensed in the first condenser, so that most of the alcohol in the alcohol vapor will be condensed and enter the first storage tank. The remaining gas will be treated by the adsorption box, removing most of the volatile organic compounds therein, thereby reducing the volatile organic compounds in the gas entering the second storage tank and the second condenser, and avoiding affecting the recycling use of alcohol. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a schematic structural diagram of the adsorption box of the present utility model;

[0014] Figure 3 is a schematic structural diagram of the adsorption plate and the connecting strip of the present utility model.

[0015] The reference signs in the drawings are: 1 - collecting pipe, 2 - filter, 3 - first condenser, 4 - first storage tank, 5 - discharge pipe, 6 - adsorption box, 7 - second storage tank, 8 - first branch pipe, 9 - second branch pipe, 10 - alcohol discharge pipe, 11 - second condenser, 12 - main water supply pipe, 13 - main water discharge pipe, 14 - box body, 16 - first liquid level sensor, 17 - adsorption plate, 18 - second liquid level sensor, 19 - third liquid level sensor, 20 - fourth liquid level sensor, 21 - first pneumatic valve, 22 - second pneumatic valve, 23 - connecting groove, 24 - connecting strip, 25 - limiting protrusion, 26 - gasket, 27 - abutting rod, 28 - third pneumatic valve, 29 - fourth pneumatic valve. Detailed implementation mode

[0016] The present utility model will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present utility model.

[0017] Embodiment. The alcohol vapor secondary recovery device is configured as Figures 1-3 shown, and includes a collecting pipe 1 connected to an alcohol extraction device. A filter 2 for removing solid waste in the alcohol vapor is provided at the rear side of the collecting pipe 1. A first condenser 3 is provided at the rear side of the filter 2. The rear side of the first condenser 3 is connected to a first storage tank 4 through a first branch pipe 8. A discharge pipe 5 is provided at the upper end of the first storage tank 4. An adsorption box 6 is provided at the rear side of the discharge pipe 5. A second storage tank 7 is provided at the rear side of the adsorption box 6. The upper end of the second storage tank 7 is connected to a second condenser 11 through a second branch pipe 9. An alcohol discharge pipe 10 is provided below the first storage tank 4 and the second storage tank 7. A main water supply pipe 12 for providing chilled water and a main water discharge pipe 13 for discharging chilled water are provided on one side of the first condenser 3 and the second condenser 11.

[0018] The adsorption box 6 includes a box body 14. A plurality of groups of adsorption plates 17 arranged up and down and offset are provided inside the box body 14. Connecting strips 24 are provided on both sides of the adsorption plates 17. A connecting groove 23 is provided at the lower end of the connecting strip 24. A limiting protrusion 25 is provided at the upper end of the connecting strip 24. A gasket 26 is provided between the lower end of the connecting strip 24 and the connecting groove 23. An abutting rod 27 for pressing the adsorption plates 17 tightly is provided at the upper end of the box body 14.

[0019] A first liquid level sensor 16 and a second liquid level sensor 18 are sequentially arranged from top to bottom inside the first storage tank 4. A first pneumatic valve 21 for adjusting the air pressure is provided at the upper end of the first storage tank 4.

[0020] A third liquid level sensor 19 and a fourth liquid level sensor 20 are sequentially arranged from top to bottom inside the second storage tank 7. A second pneumatic valve 22 for adjusting the air pressure is provided on the second storage tank 7.

[0021] A third pneumatic valve 28 is provided on the first branch pipe 8.

[0022] The fourth pneumatic valve 29 is provided on the second branch pipe 9 described above.

[0023] Principle of the utility model: The collection pipe 1 of this application is connected to the alcohol extraction equipment, and the collected gas is transported to the filter 2 for filtration. The filter can adopt the same basket filter as the patent with the application number 202321618651.8 of the previously applied patent. After filtration, the alcohol vapor will be transported to the first condenser 3, causing most of the alcohol vapor in the gas to condense upon encountering cold and fall into the first storage tank 4. The uncondensed gas will also enter the first storage tank 4 and be introduced into the adsorption box 6 through the discharge pipe 5. The adsorption box 6 can adsorb volatile organic compounds in the gas. The adsorption plate 17 can adopt materials with poor alcohol adsorption effect such as graphene. The adsorption plates 17 of this application are arranged in a vertically staggered manner, so that the gas can flow in the adsorption box 6 for a longer time and the adsorption effect is better. The adsorption plate 17 is elevated through the cooperation of the limit protrusion 25 and the connection groove 23, enabling the gas to flow between the adsorption plates 17. The setting of the sealing gasket 26 can make the connection between the adsorption plates 17 more stable. The setting of the abutting rod 27 can make the limit protrusion 25 and the connection groove 23 abut more tightly, thus avoiding poor sealing and affecting the adsorption of volatile organic compounds. Achieving tightness through the abutting rod 27 can also make the replacement of the adsorption plate 17 faster and facilitate the separation and application of volatile organic compounds. Sealing gaskets are also provided at the connection between the connecting strip 24 and the inner side wall of the box body, thus avoiding insufficient adsorption treatment of the gas. The gas after being adsorbed by the adsorption box 6 will enter the second storage tank 7. At this time, the fourth pneumatic valve 29 on the second branch pipe 9 is opened to make the gas flow towards the second condenser 11. The alcohol in the gas will pre-condense and flow back to the second storage tank 7 under the action of gravity, while the remaining gas will be discharged from the discharge port of the second condenser 11. It can not only achieve the secondary recovery of alcohol, but also reduce the content of volatile organic compounds in alcohol.

Claims

1. Alcohol vapor secondary recovery device, characterized in that: It includes a collecting pipe (1) connected to an alcohol extraction device. A filter (2) for removing solid waste in the alcohol vapor is provided at the rear side of the collecting pipe (1). A first condenser (3) is provided at the rear side of the filter (2). The rear side of the first condenser (3) is connected to a first storage tank (4) through a first branch pipe (8). An exhaust pipe (5) is provided at the upper end of the first storage tank (4). An adsorption box (6) is provided at the rear side of the exhaust pipe (5). A second storage tank (7) is provided at the rear side of the adsorption box (6). The upper end of the second storage tank (7) is connected to a second condenser (11) through a second branch pipe (9). An alcohol discharge pipe (10) is provided below the first storage tank (4) and the second storage tank (7). A water supply main pipe (12) for supplying chilled water and a water outlet main pipe (13) for discharging chilled water are provided at one side of the first condenser (3) and the second condenser (11).

2. The alcohol vapor secondary recovery device according to claim 1, wherein: The adsorption box (6) includes a box body (14). A plurality of groups of adsorption plates (17) are arranged up and down and offset in the box body (14). Connecting strips (24) are provided on both sides of the adsorption plates (17). A connecting groove (23) is provided at the lower end of the connecting strip (24). A limiting protrusion (25) is provided at the upper end of the connecting strip (24). A sealing gasket (26) is provided between the lower end of the connecting strip (24) and the connecting groove (23). A pressing rod (27) for pressing the adsorption plates (17) is provided at the upper end of the box body (14).

3. The alcohol vapor secondary recovery device according to claim 1, characterized in that: A first liquid level sensor (16) and a second liquid level sensor (18) are successively arranged from top to bottom in the first storage tank (4). A first pneumatic valve (21) for adjusting the air pressure is provided at the upper end of the first storage tank (4).

4. The alcohol vapor secondary recovery device according to claim 1, wherein: A third liquid level sensor (19) and a fourth liquid level sensor (20) are successively arranged from top to bottom in the second storage tank (7). A second pneumatic valve (22) for adjusting the air pressure is provided on the second storage tank (7).

5. The alcohol vapor secondary recovery device according to claim 1, wherein: A third pneumatic valve (28) is provided on the first branch pipe (8).

6. The alcohol vapor secondary recovery device according to claim 1, wherein: A fourth pneumatic valve (29) is provided on the second branch pipe (9).

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