A device for recovering ethanol from a diene mother liquor

Abstract

The utility model discloses a kind of recovery devices of ethanol in diene mother liquor, including several material tanks of series connection, conveying pump and heating pipe for heating mother liquor being set between the place of adjacent two material tanks, driving mechanism and stirring mechanism are equipped on material tank, stirring mechanism includes impeller and several stirring rods, driving mechanism is used to drive impeller and stirring rod rotation, impeller is stirred mother liquor in axial by self rotation, stirring rod is stirred mother liquor in radial by self rotation. The utility model lets mother liquor circulate in multiple material tanks, can be fully separated ethanol in mother liquor by multiple heating treatment, and after being injected into every material tank, mother liquor can be fully heated under the stirring effect of impeller and stirring rod, so that the mother liquor added later can be quickly heated, to promote ethanol evaporation and discharge, so the device can continuously process mother liquor, so that the process of recovering ethanol from mother liquor has higher efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of ethanol recovery devices, and in particular to a device for recovering ethanol from diene mother liquor. Background Technology

[0002] Diene mother liquor is a byproduct solution produced during the chemical production of Warr's oxides. It typically contains unreacted raw materials, solvents (such as ethanol), catalyst residues, and polymers.

[0003] For diene mother liquor, ethanol recovery is a crucial step, enabling resource recovery to reduce production costs and minimizing environmental pollution from emissions. The ethanol recovery process typically involves filtering out solid impurities from the mother liquor, obtaining ethanol through distillation, and then performing deep dehydration to achieve recycling.

[0004] A search revealed Chinese utility model patent CN208857169U, which discloses an ethanol recovery system for saponification reactions. The system includes a preheating device, a condenser, and a membrane filtration device connected in sequence. The steam outlet at the top of the preheating device is connected to the condenser, which is connected to the membrane filtration device via a collection device. The preheating device heats the mother liquor to be separated to obtain a steam mixture. The condenser condenses the steam mixture to obtain an ethanol solution. The membrane filtration device filters the ethanol solution to obtain anhydrous ethanol. This application separates ethanol vapor by heating the mother liquor and recovers ethanol after condensation. However, this device cannot continuously feed and process the mother liquor, thus hindering continuous ethanol recovery and making it difficult to guarantee the efficiency of ethanol recovery. Utility Model Content

[0005] In view of the above-mentioned prior art, the present invention provides an ethanol recovery device in diene mother liquor, and the main technical problem to be solved is how to ensure the efficiency of ethanol recovery.

[0006] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0007] An ethanol recovery device for diene mother liquor includes several material tanks arranged in series, a transfer pump disposed between two adjacent material tanks, and a heating pipe for heating the mother liquor. The material tanks are equipped with a drive mechanism and a stirring mechanism. The stirring mechanism includes a pulsator and several stirring rods. The drive mechanism is used to drive the pulsator and stirring rods to rotate. The pulsator stirs the mother liquor axially by rotating itself, and the stirring rods stir the mother liquor radially by rotating themselves.

[0008] Furthermore, a liquid tank is fixedly connected to the bottom of the material tank. A first through hole is opened at the middle of the bottom of both the material tank and the liquid tank. The material tank and the liquid tank are rotatably connected to the same drive shaft through the first through hole, and the impeller is fixedly connected to the top of the drive shaft.

[0009] Furthermore, the material tank and the liquid tank are provided with several second through holes at equal intervals on their outer sides. The material tank and the liquid tank are rotatably connected to the same first connecting shaft at the second through holes. The stirring rod is fixedly connected to one end of the first connecting shaft in the liquid tank and is claw-shaped.

[0010] Furthermore, several second connecting shafts are equidistantly rotatably connected at the outer side between the bottom inner wall of the material tank and the bottom of the liquid tank. Both the second connecting shafts and the drive shaft are connected to spur gears by keys, with two spur gears meshing on the second connecting shaft and the drive shaft respectively.

[0011] Furthermore, both the second connecting shaft and the outside of the first connecting shaft are connected to bevel gears by keys, and the two bevel gears on the second connecting shaft and the first connecting shaft mesh with each other.

[0012] Furthermore, a base is provided below the material tank, and several pillars are fixedly connected at equal intervals on the outer side between the base and the material tank. The drive mechanism includes a motor fixedly connected to the top of the base, and the top of the motor's output shaft is fixedly connected to the drive shaft.

[0013] Furthermore, the top of the material tank is dome-shaped, and a discharge port is opened at the top of the material tank. A material pipe is fixedly connected to the top of the material tank at the discharge port. The tops of several material pipes are fixedly connected to the same multi-port pipe, and a condenser is provided at one end of the multi-port pipe.

[0014] Furthermore, a liquid inlet is provided on one side of the material tank above the liquid tank, and a liquid inlet pipe is fixedly connected to the material tank at the liquid inlet. One end of the liquid inlet pipe extends into the liquid tank. A liquid outlet is provided on one side of the bottom of both the material tank and the liquid tank, and the same liquid outlet pipe is fixedly connected to the liquid outlet of both the material tank and the liquid tank.

[0015] Furthermore, the delivery pump is fixedly connected between the outlet and inlet pipes of two adjacent material tanks, and the heating pipe is installed inside the material tank.

[0016] Furthermore, a swing arm is fixedly connected to the inner wall of the material tank above the stirring rod, and a pendulum is fixedly connected to one end of the swing arm. Both the swing arm and the pendulum are made of fluororubber.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This application allows the mother liquor to circulate in multiple material tanks, enabling the ethanol in the mother liquor to be fully separated through multiple heating treatments. After the mother liquor is injected into each material tank, it is fully heated by the agitation of the impeller and stirring rod, thus allowing the subsequently added mother liquor to heat up quickly to promote the evaporation and discharge of ethanol. Therefore, this device can continuously process the mother liquor, making the process of recovering ethanol from the mother liquor more efficient.

[0019] 2. By setting the top of the material tank in a dome shape, the arc-shaped top wall of the material tank can facilitate the convergence of ethanol vapor at the material pipe, so as to facilitate its discharge and collection. At the same time, it can prevent ethanol vapor from being trapped in the material tank, which would cause incomplete material collection.

[0020] 3. By setting a pendulum in the material tank, the rotation of the stirring rod can continuously strike the pendulum, causing the pendulum to undergo elastic deformation. Therefore, the pendulum can swing and sway under the elastic force of the pendulum, which can further agitate the mother liquor, making it heat evenly and allowing the ethanol to be separated more quickly. Attached Figure Description

[0021] Figure 1 This is a perspective view of an ethanol recovery device from diene mother liquor according to Embodiment 1 of this application;

[0022] Figure 2 This is a cross-sectional view of the material tank of an ethanol recovery device from diene mother liquor according to Embodiment 1 of this application;

[0023] Figure 3 This is a cross-sectional view of the material tank of an ethanol recovery device from diene mother liquor according to Embodiment 2 of this application.

[0024] Explanation of icon numbers:

[0025] Material tank 1, conveying pump 2, liquid outlet pipe 3, base 4, impeller 5, motor 6, drive shaft 7, second connecting shaft 8, flat gear 9, stirring rod 10, first connecting shaft 11, bevel gear 12, liquid tank 13, liquid inlet pipe 14, material pipe 15, swing arm 16, pendulum 17. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the utility model.

[0027] Example 1

[0028] See attached document Figure 1-2This application provides an ethanol recovery device for diene mother liquor, including a plurality of material tanks 1 arranged in series, a transfer pump 2 arranged between two adjacent material tanks 1, and a heating pipe for heating the mother liquor. One side of the material tank 1 has an inlet above the liquid tank 13. The material tank 1 is fixedly connected to the inlet with an inlet pipe 14. The inlet pipe 14 is in the shape of a "7". The bottom end of the inlet pipe 14 extends into the liquid tank 13. Both the material tank 1 and the liquid tank 13 have outlets on one side of their bottom ends. The material tank 1 and the liquid tank 13 are fixedly connected to the same outlet pipe 3 at their outlets.

[0029] Preferably, a base 4 is provided below the material tank 1, and several pillars are fixedly connected at equal intervals on the outer side between the base 4 and the material tank 1. The driving mechanism includes a motor 6 fixedly connected to the top of the base 4, and the top of the output shaft of the motor 6 is fixedly connected to the drive shaft 7.

[0030] When using this device to recover ethanol from diene mother liquor, the mother liquor can be injected into the material tank 1 from the inlet pipe 14 after starting the motor 6, the transfer pump 2, the heating tube and the condenser. The mother liquor will then flow into the liquid tank 13 along the inlet pipe 14.

[0031] Preferably, a liquid tank 13 is fixedly connected to the bottom of the material tank 1. Both the material tank 1 and the liquid tank 13 have a first through hole at the middle of their bottom ends. The material tank 1 and the liquid tank 13 are rotatably connected to the same drive shaft 7 through the first through hole, and the impeller 5 is fixedly connected to the top of the drive shaft 7. Several second through holes are equidistantly provided on the outer sides of both the material tank 1 and the liquid tank 13. The material tank 1 and the liquid tank 13 are rotatably connected to the same first connecting shaft 11 through the second through holes. A stirring rod 10 is fixedly connected to one end of the first connecting shaft 11 located in the liquid tank 13, and the stirring rod 10 is claw-shaped.

[0032] Preferably, a plurality of second connecting shafts 8 are equidistantly rotatably connected at the outer side between the bottom inner wall of the material tank 1 and the bottom of the liquid tank 13. Both the second connecting shafts 8 and the drive shaft 7 are externally connected to spur gears 9 via keys, with two spur gears 9 meshing on each shaft. Both the second connecting shafts 8 and the first connecting shaft 11 are externally connected to bevel gears 12 via keys, with two bevel gears 12 meshing on each shaft.

[0033] With the impeller 5 and stirring rod 10 stirring the mother liquor, the heating tube can make it heat more evenly, so that ethanol can be separated from the mother liquor in the form of vapor more quickly. After that, the ethanol vapor will rise, and the dome-shaped material tank 1 can collect it and discharge it through the material pipe 15, and finally enter the condenser along the multi-port pipe, where it will be condensed into liquid ethanol for collection and subsequent processing.

[0034] Preferably, the material tank 1 is provided with a drive mechanism and a stirring mechanism. The stirring mechanism includes a pulsator 5 and several stirring rods 10. The drive mechanism is used to drive the pulsator 5 and the stirring rods 10 to rotate. The pulsator 5 stirs the mother liquor in the axial direction by rotating itself, and the stirring rods 10 stir the mother liquor in the radial direction by rotating themselves.

[0035] Preferably, the top of the material tank 1 is dome-shaped, and a discharge port is provided at the top of the material tank 1. A material pipe 15 is fixedly connected to the top of the material tank 1 at the discharge port. The tops of several material pipes 15 are fixedly connected to the same multi-port pipe, and a condenser is provided at one end of the multi-port pipe.

[0036] In the above process, the stirring of the mother liquor by the impeller 5 and the stirring rod 10 can make it heat up evenly. Therefore, the mother liquor added later can be heated up quickly and the ethanol contained therein can be separated and discharged in the form of vapor. Thus, this device can process the mother liquor in real time by receiving and discharging at the same time, thereby realizing the continuous processing of the mother liquor and ensuring the efficiency of the process of recovering ethanol from the mother liquor.

[0037] Preferably, the delivery pump 2 is fixedly connected between the outlet pipe 3 and the inlet pipe 14 of two adjacent material tanks 1, and the heating pipe is installed in the material tank 1. Valves are provided in the outlet pipe 3, the inlet pipe 14 and the material pipe 15.

[0038] Furthermore, since the mother liquor flows sequentially through several material tanks 1 under the drive of the transfer pump 2, the ethanol can be separated to a sufficient degree through multiple treatments of the mother liquor.

[0039] The liquid tank 13 is equipped with a liquid level sensor and a temperature sensor to detect the liquid level of the mother liquor in the liquid tank 13 and prevent overflow. The temperature sensor is used to detect the temperature of the mother liquor heated by the heating tube and stabilize it at a temperature slightly higher than the boiling point of ethanol. The operating speed of the transfer pump 2 is controlled by the controller, which can speed up the replenishment of new mother liquor when the mother liquor temperature is too high and slow down the replenishment of new mother liquor when the mother liquor temperature is too low.

[0040] Example 2

[0041] See attached document Figure 3 This application provides an ethanol recovery device from diene mother liquor. Compared with Example 1, in order to further promote the separation of ethanol from the mother liquor, a swing rod 16 is fixedly connected to the inner wall of the material tank 1 above the stirring rod 10. A pendulum 17 is fixedly connected to one end of the swing rod 16. Both the swing rod 16 and the pendulum 17 are made of fluororubber.

[0042] When the stirring rod 10 rotates to agitate the mother liquor, the stirring rod 10 will also continuously strike the pendulum 17 to cause the pendulum rod 16 to undergo elastic deformation. Therefore, the pendulum 17 will continue to swing under the elastic force of the pendulum rod 16, so that the pendulum 17 can be used to further agitate the mother liquor, so that it can be heated more evenly and promote the faster separation of ethanol from the mother liquor.

[0043] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. An ethanol recovery device from diene mother liquor, comprising a plurality of material tanks (1) arranged in series, a transfer pump (2) disposed between two adjacent material tanks (1), and a heating pipe for heating the mother liquor, characterized in that, The material tank (1) is provided with a driving mechanism and a stirring mechanism. The stirring mechanism includes a pulsator (5) and several stirring rods (10). The driving mechanism is used to drive the pulsator (5) and the stirring rods (10) to rotate. The pulsator (5) stirs the mother liquor in the axial direction by rotating itself, and the stirring rods (10) stir the mother liquor in the radial direction by rotating itself.

2. The ethanol recovery device from diene mother liquor according to claim 1, characterized in that, A liquid tank (13) is fixedly connected to the bottom of the material tank (1). A first through hole is opened at the middle of the bottom of both the material tank (1) and the liquid tank (13). The material tank (1) and the liquid tank (13) are rotatably connected to the same drive shaft (7) through the first through hole. The impeller (5) is fixedly connected to the top of the drive shaft (7).

3. The ethanol recovery device from diene mother liquor according to claim 2, characterized in that, The material tank (1) and the liquid tank (13) are provided with several second through holes at equal intervals on their outer sides. The material tank (1) and the liquid tank (13) are rotatably connected to the same first connecting shaft (11) at the second through holes. The stirring rod (10) is fixedly connected to one end of the first connecting shaft (11) in the liquid tank (13). The stirring rod (10) is claw-shaped.

4. The ethanol recovery device from diene mother liquor according to claim 3, characterized in that, Several second connecting shafts (8) are equidistantly rotatably connected at the outer side between the bottom inner wall of the material tank (1) and the bottom of the liquid tank (13). The second connecting shafts (8) and the drive shaft (7) are both connected to the outside by key with spur gears (9), and two spur gears (9) on the second connecting shaft (8) and the drive shaft (7) mesh with each other.

5. The ethanol recovery device from diene mother liquor according to claim 4, characterized in that, Both the second connecting shaft (8) and the first connecting shaft (11) are connected to bevel gears (12) by keys, and the two bevel gears (12) on the second connecting shaft (8) and the first connecting shaft (11) mesh with each other.

6. The ethanol recovery device from diene mother liquor according to claim 5, characterized in that, The material tank (1) is provided with a base (4) below it. Several pillars are fixedly connected at equal intervals on the outer side of the base (4) and the material tank (1). The driving mechanism includes a motor (6) fixedly connected to the top of the base (4). The top of the output shaft of the motor (6) is fixedly connected to the drive shaft (7).

7. The ethanol recovery device from diene mother liquor according to claim 1, characterized in that, The top of the material tank (1) is dome-shaped, and a discharge port is provided at the top of the material tank (1). A material pipe (15) is fixedly connected to the top of the material tank (1) at the discharge port. The tops of several material pipes (15) are fixedly connected to the same multi-port pipe, and a condenser is provided at one end of the multi-port pipe.

8. The ethanol recovery device from diene mother liquor according to claim 2, characterized in that, The material tank (1) has an inlet on one side above the liquid tank (13). The material tank (1) is fixedly connected to an inlet pipe (14) at the inlet. One end of the inlet pipe (14) extends into the liquid tank (13). Both the material tank (1) and the liquid tank (13) have outlets on one side of their bottom ends. The material tank (1) and the liquid tank (13) are fixedly connected to the same outlet pipe (3).

9. The ethanol recovery device from diene mother liquor according to claim 8, characterized in that, The delivery pump (2) is fixedly connected between the outlet pipe (3) and the inlet pipe (14) of two adjacent material tanks (1), and the heating pipe is installed in the material tank (1).

10. The ethanol recovery device from diene mother liquor according to claim 3, characterized in that, The inner wall of the material tank (1) is fixedly connected to a swing rod (16) above the stirring rod (10), and a pendulum (17) is fixedly connected to one end of the swing rod (16). Both the swing rod (16) and the pendulum (17) are made of fluororubber.

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