Ethanol steam recovery device

Abstract

The utility model discloses an ethanol steam recovery device which comprises a recovery box, and the interior of the recovery box is divided into an upper-layer cooling cavity, a middle-layer cooling cavity and a lower-layer cooling cavity from top to bottom; according to the utility model, the upper-layer cooling cavity, the middle-layer cooling cavity and the lower-layer cooling cavity are arranged in the recovery box from top to bottom, and are respectively communicated with the cooling water tank circulating pipelines in different cooling temperature areas through the water inlet nozzles and the water outlet nozzles; a first heat exchange pipe, a second heat exchange pipe and a third heat exchange pipe which are arranged in an upper-layer cooling cavity, a middle-layer cooling cavity and a lower-layer cooling cavity sequentially pass through the upper-layer cooling cavity, the middle-layer cooling cavity and the lower-layer cooling cavity which are sequentially decreased from top to bottom in a cooling temperature area, and steam-water separation is achieved through a first steam-water separator, a second steam-water separator and a third steam-water separator. And the ethanol solution is stored in the corresponding collecting tank, so that the aim of fully recovering ethanol in multiple stages and multiple temperature zones is fulfilled.

Description

Technical Field

[0001] The utility model relates to the technical field of ethanol production, in particular to an ethanol vapor recovery device. Background Art

[0002] Ethanol is an organic substance, commonly known as alcohol, with the chemical formula CH3CH2OH (C2H6O or C2H5OH) or EtOH. It is a saturated monohydric alcohol with a hydroxyl group. It is a flammable, volatile, colorless, transparent liquid at room temperature and pressure. Its aqueous solution has the smell of wine and is slightly irritating. With the smell of wine and a pungent and irritating taste, slightly sweet ethanol has a wide range of uses. It can be used to make acetic acid, beverages, flavors, dyes, fuels, etc. Ethanol with a volume fraction of 70%-75% is also commonly used as a disinfectant in medicine. It has a wide range of uses in the national defense industry, medical and health care, organic synthesis, food industry, and industrial and agricultural production.

[0003] At present, during the collection process of ethanol after distillation, part of the ethanol is vaporized due to the high temperature, resulting in part of the vaporized ethanol being released into the air, which not only causes waste but also pollutes the environment to a certain extent. In the existing technology, the condensation and recovery of ethanol gas usually uses an ordinary heat exchanger or a primary heat exchanger for recovery operations. This method has a low cooling efficiency for ethanol and cannot be quickly cooled.

[0004] To this end, an ethanol vapor recovery device is proposed, which has the advantages of multi-stage and multi-temperature zone recovery of ethanol, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an ethanol vapor recovery device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ethanol vapor recovery device comprises a recovery box, wherein the interior of the recovery box is divided into an upper cooling cavity, a middle cooling cavity, and a lower cooling cavity from top to bottom, and the outer wall surface of the recovery box is respectively provided with a group of water inlet nozzles and water outlet nozzles through the upper cooling cavity, the middle cooling cavity, and the lower cooling cavity, and a plurality of groups of the water inlet nozzles and the water outlet nozzles are respectively connected to the circulation pipelines of several external cooling water tanks, and the upper cooling cavity, the middle cooling cavity, and the lower cooling cavity are respectively installed with a first heat exchange tube, a second heat exchange tube, and a third heat exchange tube, and the first The upper end of the heat exchange tube is connected to the ethanol steam pipeline, and a first steam-water separator is connected between the first heat exchange tube and the second heat exchange tube via a flange, a second steam-water separator is connected between the second heat exchange tube and the third heat exchange tube via a flange, the lower end of the third heat exchange tube is connected to the third steam-water separator via a flange, and a return steam pipe is connected to the steam outlet of the third steam-water separator, the return steam pipe is connected to the second heat exchange tube, and a one-way valve is installed on the surface of the return steam pipe, and a collection tank is respectively provided at the liquid outlet of the first steam-water separator, the second steam-water separator, and the third steam-water separator.

[0007] As a further description of the above technical solution: the first steam-water separator, the second steam-water separator, and the third steam-water separator are respectively located on the outer wall of the recovery box, and the outer wall of the recovery box is fixed with a plurality of brackets corresponding to the first steam-water separator, the second steam-water separator, and the third steam-water separator.

[0008] As a further description of the above technical solution: the top surface of the collecting tank is connected to a collecting nozzle, and a rubber ring is provided on the inner side of the collecting nozzle, a trumpet cover is welded on the inner wall surface of the collecting tank corresponding to the collecting nozzle, and a liquid outlet nozzle with a valve is provided on the lower surface of the collecting tank.

[0009] As a further description of the above technical solution: the parts of the first heat exchange tube, the second heat exchange tube and the third heat exchange tube inside the recovery box are all provided with a spiral structure, and both ends of the first heat exchange tube, the second heat exchange tube and the third heat exchange tube are fixed with circular flanges.

[0010] As a further description of the above technical solution: the left and right sides of the first steam-water separator, the second steam-water separator and the third steam-water separator are respectively provided with a steam inlet and a steam outlet, and the bottom of the first steam-water separator, the second steam-water separator and the third steam-water separator is provided with a liquid outlet.

[0011] As a further description of the above technical solution: the outer wall surface of the collection tank is embedded with tempered glass with a strip structure.

[0012] The utility model has the following beneficial effects:

[0013] In the utility model, an upper cooling cavity, a middle cooling cavity and a lower cooling cavity are arranged from top to bottom in a recovery box, and the upper cooling cavity, the middle cooling cavity and the lower cooling cavity are respectively connected with cooling water tank circulation pipelines in different cooling temperature zones by water inlet nozzles and water outlet nozzles, so that the first heat exchange tube, the second heat exchange tube and the third heat exchange tube built in the upper cooling cavity, the middle cooling cavity and the lower cooling cavity pass through the upper cooling cavity, the middle cooling cavity and the lower cooling cavity whose cooling temperature zones decrease from top to bottom in sequence, and the first steam-water separator, the second steam-water separator and the third steam-water separator are adopted to realize steam-water separation, and the ethanol solution is stored in the corresponding collection tank, so as to achieve the purpose of fully recovering ethanol in multiple stages and multiple temperature zones. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the external structure of the ethanol vapor recovery device of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the ethanol vapor recovery device of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the collection tank of the ethanol vapor recovery device of the utility model.

[0017] Legend:

[0018] 1. Recovery box; 2. First steam-water separator; 3. Bracket; 4. Second steam-water separator; 5. Third steam-water separator; 6. Return steam pipe; 7. One-way valve; 8. Water inlet nozzle; 9. Water outlet nozzle; 10. Collection tank; 11. Upper cooling chamber; 12. Middle cooling chamber; 13. Lower cooling chamber; 14. First heat exchange tube; 15. Second heat exchange tube; 16. Third heat exchange tube; 17. Collection nozzle; 18. Rubber ring; 19. Speaker cover; 20. Liquid outlet nozzle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] According to an embodiment of the utility model, an ethanol vapor recovery device is provided.

[0021] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, the ethanol vapor recovery device according to the embodiment of the utility model includes a recovery box 1, the interior of the recovery box 1 is divided into an upper cooling chamber 11, a middle cooling chamber 12, and a lower cooling chamber 13 from top to bottom, and the outer wall of the recovery box 1 is respectively provided with a group of water inlet nozzles 8 and water outlet nozzles 9 through the upper cooling chamber, the middle cooling chamber 12, and the lower cooling chamber 13, and the multiple groups of water inlet nozzles 8 and water outlet nozzles 9 are respectively connected to the circulation pipelines of several external cooling water tanks, and the upper cooling chamber 11, the middle cooling chamber 12, and the lower cooling chamber 13 are respectively installed with a first heat exchange tube 14, a second heat exchange tube 15, and a third heat exchange tube 16, the upper end of the first heat exchange tube 14 is connected to the ethanol steam pipeline, and the first heat exchange tube 14 and the second heat exchange tube 15 are connected by a flange with a first steam-water separator 2, the second heat exchange tube 15 and the third heat exchange tube 16. 6 is connected with a second steam-water separator 4 by a flange, the lower end of the third heat exchange tube 16 is connected with the third steam-water separator 5 by a flange, and the steam outlet of the third steam-water separator 5 is connected with a return steam pipe 6, the return steam pipe 6 is connected with the second heat exchange tube 15, and a one-way valve 7 is installed on the surface of the return steam pipe 6, and a collecting tank 10 is respectively arranged at the liquid outlet of the first steam-water separator 2, the second steam-water separator 4, and the third steam-water separator 5. In order to facilitate the input of the return steam pipe 6 into the second heat exchange tube 15, a circulating air pump is also arranged on the surface of the return steam pipe 6. The control mode of the utility model is controlled by manually starting and closing the switch. The wiring diagram of the power element and the provision of the power supply belong to the common knowledge in the field, and the utility model is mainly used to protect the mechanical device, so the utility model does not explain the control mode and wiring arrangement in detail;

[0022] In one embodiment, the first steam-water separator 2, the second steam-water separator 4, and the third steam-water separator 5 are respectively located on the outer wall of the recovery box 1, and a plurality of brackets 3 are fixedly connected to the outer wall of the recovery box 1 corresponding to the first steam-water separator 2, the second steam-water separator 4, and the third steam-water separator 5. By setting the brackets 3, the reliability of the installation of the steam-water separator is guaranteed, and the pipeline load can also be reduced.

[0023] In one embodiment, the top surface of the collecting tank 10 is connected to a collecting nozzle 17, and a rubber ring 18 is provided on the inner side of the collecting nozzle 17. A trumpet cover 19 is welded on the inner wall surface of the collecting tank 10 corresponding to the collecting nozzle 17, and a liquid outlet nozzle 20 with a valve is provided on the lower surface of the collecting tank 10. The rubber ring 18 is used to connect with the liquid outlets of the first steam-water separator 2, the second steam-water separator 4, and the third steam-water separator 5. The setting of the trumpet cover 19 reduces the volatilization of ethanol.

[0024] In one embodiment, the first heat exchange tube 14, the second heat exchange tube 15, and the third heat exchange tube 16 are located inside the recovery box 1. The portions are all provided with a spiral structure, and both ends of the first heat exchange tube 14, the second heat exchange tube 15, and the third heat exchange tube 16 are fixedly connected with circular flanges. The spiral structures of the first heat exchange tube 14, the second heat exchange tube 15, and the third heat exchange tube 16 can extend the time for the entire ethanol to pass through the first heat exchange tube 14, the second heat exchange tube 15, and the third heat exchange tube 16, thereby ensuring the cooling effect.

[0025] In one embodiment, a steam inlet and a steam outlet are respectively provided on the left and right sides of the first steam-water separator 2, the second steam-water separator 4, and the third steam-water separator 5, and a liquid outlet is provided at the bottom of the first steam-water separator 2, the second steam-water separator 4, and the third steam-water separator 5. The steam inlet and the steam outlet are used for the passage of ethanol-containing steam, and the liquid outlet is used for collecting ethanol.

[0026] In one embodiment, the outer wall of the collection tank 10 is embedded with tempered glass with a strip structure. The provision of the tempered glass facilitates observation of the liquid level of the collection tank 10 and helps to empty the ethanol solution in the collection tank 10 in a timely manner.

[0027] Working principle:

[0028] When in use, the ethanol-containing steam is first connected to the first heat exchange tube 14 of the recovery tank 1 through a pipeline, and then the upper cooling chamber 11, the middle cooling chamber 12, and the lower cooling chamber 13 are respectively connected to the cooling water tank circulation pipelines in different cooling temperature zones through the water inlet nozzle 8 and the water outlet nozzle 9, so that the first heat exchange tube 14, the second heat exchange tube 15, and the third heat exchange tube 16 built in the upper cooling chamber 11, the middle cooling chamber 12, and the lower cooling chamber 13 pass through the upper cooling chamber 11, the middle cooling chamber 12, and the lower cooling chamber 13 in order from top to bottom. When ethanol is recovered, the ethanol-containing steam is first cooled in the upper cooling chamber 11 under the action of the first heat exchange tube 14, and then the steam is separated by steam and water in the first steam-water separator 2 so that the steam enters The ethanol solution flows into the second heat exchange tube 15, and then flows into the collecting tank 10 below the first steam-water separator 2. Under the action of the second heat exchange tube 15, the middle cooling chamber 12 is subjected to secondary cooling. After the steam and water are separated by the second steam-water separator 4, the steam enters the third heat exchange tube 16. The ethanol solution flows into the collecting tank 10 below the second steam-water separator 4, and then the lower cooling chamber 13 is subjected to tertiary cooling. After the steam and water are separated by the third steam-water separator 5, the steam is refluxed to the first steam-water separator through the steam return pipe 6 for circulation, thereby ensuring the thoroughness of cooling the ethanol-containing steam and maximizing the ethanol content in the final exhaust gas. After the recovery is completed, the valve of the liquid outlet 20 is opened to discharge the ethanol solution, and the solution is stored in a sealed storage tank.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ethanol vapor recovery device, comprising a recovery tank (1), characterized in that: The interior of the recovery box (1) is divided from top to bottom into an upper cooling chamber (11), a middle cooling chamber (12), and a lower cooling chamber (13), and the outer wall of the recovery box (1) is respectively provided with a group of water inlet nozzles (8) and water outlet nozzles (9) through the upper cooling chamber, the middle cooling chamber (12), and the lower cooling chamber (13), and a plurality of groups of water inlet nozzles (8) and water outlet nozzles (9) are respectively connected to the circulation pipelines of a plurality of external cooling water tanks, and the upper cooling chamber (11), the middle cooling chamber (12), and the lower cooling chamber (13) are respectively installed with a first heat exchange tube (14), a second heat exchange tube (15), and a third heat exchange tube (16), and the upper end of the first heat exchange tube (14) is connected to a pipeline containing ethanol steam. A first steam-water separator (2) is connected between the first heat exchange tube (14) and the second heat exchange tube (15) via a flange, a second steam-water separator (4) is connected between the second heat exchange tube (15) and the third heat exchange tube (16) via a flange, the lower end of the third heat exchange tube (16) is connected to a third steam-water separator (5) via a flange, and a steam return pipe (6) is connected to the steam outlet of the third steam-water separator (5), the steam return pipe (6) is connected to the second heat exchange tube (15), and a one-way valve (7) is installed on the surface of the steam return pipe (6), and a collection tank (10) is respectively provided at the liquid outlet of the first steam-water separator (2), the second steam-water separator (4), and the third steam-water separator (5).

2. The ethanol vapor recovery device according to claim 1, characterized in that: The first steam-water separator (2), the second steam-water separator (4), and the third steam-water separator (5) are respectively located on the outer wall surface of the recovery box (1), and a plurality of brackets (3) are fixedly connected to the outer wall surface of the recovery box (1) corresponding to the first steam-water separator (2), the second steam-water separator (4), and the third steam-water separator (5).

3. The ethanol vapor recovery device according to claim 1, characterized in that: The top surface of the collecting tank (10) is connected to a collecting nozzle (17), and a rubber ring (18) is provided on the inner side surface of the collecting nozzle (17); a bell cover (19) is welded to the inner wall surface of the collecting tank (10) corresponding to the collecting nozzle (17), and a liquid outlet nozzle (20) with a valve is provided on the lower surface of the collecting tank (10).

4. The ethanol vapor recovery device according to claim 1, characterized in that: The first heat exchange tube (14), the second heat exchange tube (15), and the third heat exchange tube (16) are all provided with spiral structures in their parts inside the recovery box (1), and circular flanges are fixedly connected to both ends of the first heat exchange tube (14), the second heat exchange tube (15), and the third heat exchange tube (16).

5. The ethanol vapor recovery device according to claim 1, characterized in that: The first steam-water separator (2), the second steam-water separator (4) and the third steam-water separator (5) are respectively provided with a steam inlet and a steam outlet on their left and right sides, and a liquid outlet is provided at the bottom of the first steam-water separator (2), the second steam-water separator (4) and the third steam-water separator (5).

6. The ethanol vapor recovery device according to claim 1, characterized in that: The outer wall surface of the collection tank (10) is embedded with tempered glass having a strip structure.

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