Automatic water segregator and azeotropic distillation device

Abstract

The utility model relates to the technical field of organic solvent recovery, and discloses an automatic water segregator and an azeotropic distillation device, the automatic water segregator comprises a water segregator body, an MCU (Microprogrammed Control Unit), a peristaltic pump, at least two infrared sensing groups and a driving device for driving all the infrared sensing groups to move up and down; each infrared sensing group comprises a transmitting head and a receiving head; in the actual use process, the phase interface height in the water segregator body is detected through the infrared sensing sets, the MCU main control unit drives the fusion pump to act through infrared detection signals of the infrared sensing sets, and therefore water in the water segregator body is discharged, automatic operation of the water segregator body is achieved, and manual operation is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of organic solvent recovery, in particular to an automatic water separator and an azeotropic distillation device. Background Art

[0002] During the recycling and reuse of aqueous organic wastewater, a certain amount of water cut (i.e., an azeotrope of an organic solvent and water) is often obtained. To improve the yield of the organic solvent regeneration cycle and further enhance the resource recovery ratio, a lightweight entrainer can be added to the water cut. The entrainer and water form a lower-boiling azeotrope, which is then separated in a water separator, with the organic phase refluxed and the aqueous phase extracted, thereby destroying the azeotropic composition of the water cut and ultimately recovering the regenerated organic solvent from the water cut.

[0003] Due to the nature of the resource recycling industry, the composition and content of organic wastewater often fluctuate, which in turn causes even greater fluctuations in the composition and content of water-cut products. Therefore, each batch of recycling using water-cut products as raw material requires a separate pilot test to determine the type and dosage of the lightweight entrainer, which results in a large amount of experimental work. The operating conditions of the pilot test should be as consistent as possible with subsequent large-scale production to maximize its reference value.

[0004] In addition, the composition of each batch of experimental water cut products and the choice of entrainer are different, and the coalescence rate in the water separator will also be different, so the fluctuation range of the phase interface in the water separator that is expected to be controlled is also different;

[0005] When the density difference between the organic phase and the aqueous phase is large, or the surface tension between the two phases is small, the droplets in the manifold coalesce quickly and the phase interface is clear. In this case, it is desirable to have a larger operating range for the phase interface during the intermittent opening and closing of the manifold bottom valve, i.e., a higher upper limit and a lower lower limit, to increase operating efficiency.

[0006] When the density difference between the organic and aqueous phases is small, or the surface tension between the two phases is high, the droplets in the manifold coalesce slowly. In this case, it is desirable to keep the highest phase interface low during intermittent opening and closing of the manifold to ensure sufficient coalescence, minimize the organic content (COD) in the discharged wastewater, and thus reduce the pressure on subsequent wastewater treatment.

[0007] Currently, small-scale glass distillation towers are often equipped with glass manifolds and lack automated moving parts. During small-scale operations, a dedicated person must be on duty to monitor the manifold and intermittently open the manifold bottom valve to drain water. The manifold bottom valve is a glass stopcock, and manual control of the timing and force is imprecise, making it impossible to maintain the manifold interface within a specific fluctuation range for each batch of experiments. Furthermore, small-scale azeotropic distillation tests take a long time, consuming the technicians' energy. Furthermore, the technicians inhale a large amount of organic vapors during long-term monitoring near the small-scale distillation tower, increasing the risk of occupational diseases. Utility Model Content

[0008] In view of the shortcomings of the background technology, the utility model provides an automatic water separator and an azeotropic distillation device. The technical problem to be solved is that the existing water separator used for recycling and utilizing organic waste liquid requires manual operation by workers and endangers the health of workers.

[0009] To solve the above technical problems, in the first aspect, the utility model provides the following technical solutions: an automated water separator and azeotropic distillation device, comprising a water separator body, an MCU main control unit, a peristaltic pump, at least two infrared sensor groups, and a drive device for moving all infrared sensor groups up and down; each infrared sensor group comprises a transmitter head and a receiver head;

[0010] The top of the water separator body is an inlet, and the bottom is provided with a water phase outlet, the water phase outlet is connected to the peristaltic pump through a connecting pipe, and the branch pipe on the side wall of the water separator body away from the pipe opening of the water separator body is an organic phase outlet;

[0011] All infrared sensor groups are arranged in sequence along the length direction of the water divider body, and the transmitter head and the receiver head of each infrared sensor group are arranged opposite to each other with respect to the water divider body;

[0012] The MCU main control unit is electrically connected to the infrared sensor group to receive the infrared detection signal output by the infrared sensor group;

[0013] The MCU main control unit is electrically connected to the peristaltic pump and drives the peristaltic pump to work based on the infrared detection signal.

[0014] In certain embodiments of the first aspect, the present invention includes three infrared sensor groups.

[0015] In certain implementations of the first aspect, the distance between two adjacent infrared sensor groups is 0.5 cm.

[0016] In a certain embodiment of the first aspect, the transmitting head and the receiving head of each infrared sensor group are respectively covered with a lampshade with opaque side walls.

[0017] In a certain embodiment of the first aspect, the transmitting heads of all infrared sensor groups are installed on a first junction box, and the receiving heads of all infrared sensor groups are installed on a second junction box. The first junction box is fixed on the moving side of the driving device, and the first junction box is connected to the second junction box through an arc-shaped connecting plate.

[0018] In certain embodiments of the first aspect, the driving device is a guide rail.

[0019] In a certain embodiment of the first aspect, the length of the guide rail is 6 cm; and scale lines are provided on the fixed side of the guide rail along the length direction of the guide rail.

[0020] In a certain embodiment of the first aspect, a metal spring is provided between the fixed side and the movable side of the guide rail.

[0021] In a certain implementation manner of the first aspect, the MCU main control unit is electrically connected to a buzzer unit, and an alarm sound is emitted through the buzzer unit.

[0022] In the second aspect, the utility model also provides an azeotropic distillation device, including the above-mentioned automatic water separator, and also including a glass intermittent distillation tower, the product outlet of the glass intermittent distillation tower is connected to the inlet of the water separator body through a second connecting pipe, and the branch pipe of the water separator body is connected to the tower bottom reflux port of the glass intermittent distillation tower through a third connecting pipe.

[0023] Compared with the prior art, the present invention has the following beneficial effects: in actual use, the present invention detects the phase interface height in the water separator body through multiple infrared sensor groups, and the MCU main control unit drives the peristaltic pump through the infrared detection signal of the infrared sensor group, thereby discharging the water in the water separator body, realizing automatic operation of the water separator body without manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the infrared sensor group of the automatic water separator in the embodiment in the first position;

[0025] Figure 2 A schematic diagram of the infrared sensor group of the automatic water separator in the embodiment in the second position;

[0026] Figure 3 Schematic diagram of the structure of the distillation tower in the embodiment;

[0027] Figure 4 Schematic diagram of the structure of the azeotropic distillation device in the embodiment. DETAILED DESCRIPTION

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0029] Example 1

[0030] This embodiment provides an automatic water separator, including: Figure 1 The water separator body 1 shown, at least two infrared sensor groups, a driving device 3 for moving all infrared sensor groups up and down and the like Figure 4 The MCU main control unit 4 and the peristaltic pump 5 are shown; each infrared sensor group includes a transmitter head 20 and a receiver head 21;

[0031] exist Figure 1 In the water separator, the top of the water separator body 1 is the inlet, and the bottom of the water separator body 1 has a water phase outlet. Figure 4 The water phase outlet is connected to the peristaltic pump 5 through the connecting pipe 6, and the branch pipe 100 on the side wall of the water separator body 1 away from the pipe opening of the water separator body 1 is the organic phase outlet.

[0032] All infrared sensor groups are arranged in sequence along the length direction of the water separator body 1, and the transmitter head 20 and the receiver head 21 of each infrared sensor group are arranged opposite to each other with respect to the water separator body 1;

[0033] exist Figure 4 In the embodiment, the MCU main control unit 4 is electrically connected to the infrared sensor group to receive the infrared detection signal output by the infrared sensor group;

[0034] The MCU main control unit 4 is electrically connected to the peristaltic pump 5 and drives the peristaltic pump 5 to work based on the infrared detection signal.

[0035] In actual use, the utility model detects the phase interface height in the water separator body 1 through multiple infrared sensor groups, and the MCU main control unit 4 drives the peristaltic pump 5 through the infrared detection signal of the infrared sensor group, thereby discharging the water in the water separator body 1, realizing automatic operation of the water separator body 1 without manual operation.

[0036] Specifically, in this embodiment, the MCU main control unit 4 is an existing single-chip microcomputer development board, for example, it can be a development board based on STC89C51, or it can be a development board based on STM32 single-chip microcomputer.

[0037] In this embodiment, Figure 1 As shown, the present invention includes three infrared sensor groups. In a certain embodiment, the remaining number of infrared sensor groups can be set to perform detection, which is not limited here and is set according to actual needs.

[0038] In addition, in this embodiment, the distance between two adjacent infrared sensor groups is 0.5 cm. The transmitting head 20 and the receiving head 21 of each infrared sensor group are respectively covered with a lampshade 22 with an opaque side wall.

[0039] In actual use, the lampshade 22 can be provided to prevent the infrared sensor groups at different heights from being disturbed in their transmission and reception, thereby improving the accuracy of the phase interface height detection in the water separator body 1 .

[0040] In addition, in this embodiment, Figure 1 As shown, the transmitting heads 20 of all infrared sensor groups are installed on the first junction box 23, and the receiving heads 21 of all infrared sensor groups are installed on the second junction box 24. The first junction box 23 is fixed on the moving side of the driving device 3, and the first junction box 23 is connected to the second junction box 24 through an arc-shaped connecting plate 25.

[0041] In actual use, when the first junction box 23 moves up and down, the first junction box 23 drives the second junction box 24 to move up and down through the arc-shaped connecting plate 25 .

[0042] Specifically, in this embodiment, the driving device 3 is a guide rail, wherein the guide rail 3 is 6 cm long. A scale line is provided along the length of the guide rail on the fixed side of the guide rail 3. In actual use, the scale line can indicate the upper limit of the phase interface of the water separator body 1.

[0043] In a certain embodiment, when the adjustment range of the phase interface of the water divider body 1 is large, the length of the guide rail 3 can be increased.

[0044] Specifically, in this embodiment, a metal spring is provided between the fixed side and the movable side of the guide rail. In actual use, the metal spring provides a certain amount of damping, which can provide a good manual shifting feel and provide a low position limit function.

[0045] In some embodiments, the driving device 3 may also be other linear motion modules, such as an air cylinder, an oil cylinder, or a screw module.

[0046] In this embodiment, the MCU main control unit 3 is electrically connected to a buzzer unit, and an alarm sound is emitted through the buzzer unit.

[0047] The working process of the present utility model is as follows: the infrared ray has a much greater ability to penetrate the organic phase than the aqueous phase. The transmitting and receiving state of the infrared sensor group at the organic phase position is on, and the transmitting and receiving state of the infrared sensor group at the aqueous phase position is off. The MCU main control unit 4 identifies the signal of each infrared sensor group and determines the liquid level position in the water separator body. When the phase interface in the water separator body 1 rises to the desired high position, the MCU main control unit 4 sends a control signal to the peristaltic pump 5. The peristaltic pump 5 works in a metering mode to drain water, and stops working after the phase interface drops to the desired low position. When the phase interface does not change for a period of time, the MCU main control unit 4 drives the buzzer unit to give an alarm prompt. It indicates that the water separation stage of the azeotropic distillation is completed.

[0048] In addition, the automatic water distributor in this embodiment has two application scenarios, wherein the application scenarios are as follows: Figure 1 As shown, at this time, the three infrared sensor groups are at the upper end of the guide rail 3, which is suitable for the case where the gathering speed is fast; Application scenario 2 is as follows Figure 2 As shown, at this time, the three infrared sensor groups are at the lower end of the guide rail 3, which is suitable for the case where the merging speed is slow.

[0049] Example 2

[0050] like Figure 4As shown, this embodiment also provides an azeotropic distillation device, including the automatic water separator in Example 1, and also including a glass gap distillation tower 7, wherein the structure of the glass gap distillation tower 7 is as shown in FIG. Figure 3 As shown, the product outlet of the glass gap distillation tower 7 is connected to the inlet of the water separator body 1 through the second connecting pipe 80, and the organic phase outlet of the branch pipe 100 of the water separator body 1 is connected to the tower bottom reflux port of the glass gap distillation tower 7 through the third connecting pipe 81.

[0051] The above description is based on the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the content of the specification. Its technical scope must be determined according to the scope of the claims.

Claims

1. An automatic water distributor, characterized in that: It comprises a water divider body (1), an MCU main control unit (4), a peristaltic pump (5), at least two infrared sensor groups, and a driving device (3) for moving all the infrared sensor groups up and down; each infrared sensor group comprises a transmitting head (20) and a receiving head (21); The top of the water separator body (1) is provided with an inlet, the bottom of the water separator body (1) is provided with a water phase outlet, the water phase outlet is connected to the peristaltic pump (5) via a connecting pipe (6), and the branch pipe (100) on the side wall of the water separator body (1) facing away from the water separator body (1) is the organic phase outlet; All infrared sensor groups are arranged in sequence along the length direction of the water separator body (1), and the transmitting head (20) and the receiving head (21) of each infrared sensor group are arranged opposite to each other with respect to the water separator body (1); The MCU main control unit (4) is electrically connected to the infrared sensor group and receives the infrared detection signal output by the infrared sensor group; The MCU main control unit (4) is electrically connected to the peristaltic pump (5) and drives the peristaltic pump (5) to operate based on the infrared detection signal.

2. An automatic water distributor according to claim 1, characterized in that: Includes three infrared sensor groups.

3. An automatic water distributor according to claim 1 or 2, characterized in that: The distance between two adjacent infrared sensor groups is 0.5 cm.

4. An automatic water distributor according to claim 1 or 2, characterized in that: The transmitting head (20) and the receiving head (21) of each infrared sensor group are respectively covered with a lampshade (22) with an opaque side wall.

5. The automatic water distributor according to claim 1, characterized in that: The transmitting heads (20) of all infrared sensor groups are mounted on a first junction box (23), and the receiving heads (21) of all infrared sensor groups are mounted on a second junction box (24). The first junction box (23) is fixed on the moving side of the driving device (3), and the first junction box (23) is connected to the second junction box (24) via an arc-shaped connecting plate (25).

6. The automatic water distributor according to claim 1, characterized in that: The driving device (3) is a guide rail.

7. An automatic water distributor according to claim 6, characterized in that: The length of the guide rail is 6 cm.

8. The automatic water distributor according to claim 6, characterized in that: Scale lines are provided on the fixed side of the guide rail along the length direction of the guide rail.

9. The automatic water distributor according to claim 1, characterized in that: The MCU main control unit (4) is electrically connected to a buzzer unit, and an alarm sound is emitted through the buzzer unit.

10. An azeotropic distillation device, characterized in that: The automatic water separator comprises the automatic water separator according to any one of claims 1 to 9, and further comprises a glass intermittent distillation tower (7), wherein the product outlet of the glass intermittent distillation tower (7) is connected to the inlet of the water separator body (1) through a second connecting pipe (80), and the branch pipe (100) of the water separator body (1) is connected to the tower bottom reflux port of the glass intermittent distillation tower (7) through a third connecting pipe (81).

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