Extraction-back extraction circular treatment device for purifying MBT (2-mercaptobenzothiazole) crude product

Abstract

The utility model discloses an extraction-back extraction circulating treatment device for purifying an MBT (2-mercaptobenzothiazole) crude product, which comprises a base station, an extraction tower for purifying and processing the MBT crude product is mounted on one side of the top of the base station, a back extraction tower for purifying and processing the MBT crude product is mounted on the other side of the top of the base station, a liquid storage tank is mounted between the extraction tower and the back extraction tower, and a liquid storage tank is mounted on the back extraction tower. An extraction pump and a back extraction pump are respectively mounted on two sides of the top of the liquid storage tank. When the extraction pump is used for conveying extraction liquid, the extraction liquid extrudes the sealing gasket and enables the sealing gasket to be separated from sealing of the communicating pipe, so that the extraction liquid can be conveyed into the extraction tower through the communicating pipe, and when the extraction pump cancels conveying, the sealing plate at the bottom of the mounting plate can be driven to move downwards under the elastic force action of the sleeve spring, so that the extraction liquid is conveyed into the extraction tower. And the communicating pipe is blocked by the sealing gasket, so that the reflux of the extraction liquid can be effectively avoided, and the stable operation of the equipment can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of extraction equipment, in particular to an extraction - counter - extraction circulation treatment device for purifying crude MBT. Background Art

[0002] Rubber accelerator MBT is a general - type accelerator, which is widely used in various rubbers. In natural rubber and general synthetic rubbers, it has a rapid vulcanization promoting effect. In addition, it also has certain plasticizing and anti - aging properties and can be used as a retarder in chloroprene rubber. At the same time, its derivatives such as CZ, NS, DZ, NOBS, etc. have better rubber vulcanization promoting properties. Rubber accelerator MBT is easily dispersed in rubber and does not pollute. It is mainly used in the manufacture of tires, inner tubes, tapes, rubber shoes and industrial products, etc. At present, the high - pressure method is generally used in industry to produce rubber accelerator MBT, that is, aniline, sulfur, and carbon disulfide react at high temperature (250 - 300 °C) and high pressure (8.0 - 11.0 Mpa) to obtain crude MBT. The content of MBT in the crude product is generally 85 - 88%, which contains more resins and intermediate products. The existence of impurities limits the application of MBT. Therefore, the crude MBT must be purified before it can be used as a commodity, and the purification of MBT is particularly important.

[0003] For example, the Chinese patent with publication number CN110498468A discloses a process and equipment for an extraction tower and a counter - extraction tower for treating phenolic wastewater, including an extraction tower and a counter - extraction tower. The extraction tower is internally provided with an extraction mixed - phase liquid outlet pipe, an extraction tower internal support, an extraction mixing device, and an extraction tower inlet liquid mixing tee. The top of the extraction tower is provided with an exhaust pipe, the bottom of the extraction tower is provided with a vent pipe, the upper part of the extraction tower is provided with a phenolic extraction phase liquid outlet pipe, and the lower part of the extraction tower is provided with a de - phenol wastewater outlet.

[0004] Although the above - mentioned technical solution solves the corresponding technical problems, the above - mentioned technical solution still has the following defects:

[0005] In the extraction and counter - extraction processes of the above - mentioned technical solution, it is not convenient to prevent the backflow of the extraction liquid. Therefore, the backflow of the extraction liquid is likely to occur, thus affecting the stability of the equipment. Content of the Utility Model

[0006] The purpose of the utility model is to provide an extraction - counter - extraction circulation treatment device for purifying crude MBT. When the extraction liquid is transported by an extraction pump, the extraction liquid squeezes the gasket, causing the gasket to disengage from the seal of the communication pipe, so that the extraction liquid can be transported into the extraction tower through the communication pipe. When the extraction pump stops transporting, under the elastic force of the sleeve spring, the sealing plate at the bottom of the mounting plate can be driven to move downward, and the communication pipe can be blocked by the gasket, thus effectively avoiding the backflow of the extraction liquid and further ensuring the stable operation of the equipment.

[0007] To achieve the above object, the main technical solutions adopted by the present utility model include:

[0008] An extraction - back - extraction circulation treatment device for purifying MBT crude product, comprising:

[0009] A base platform, on one side of the top of the base platform, an extraction tower for purifying MBT crude product is installed, on the other side of the top of the base platform, a back - extraction tower for purifying MBT crude product is installed, a liquid storage tank is installed between the extraction tower and the back - extraction tower, on both sides of the top of the liquid storage tank, an extraction pump and a back - extraction pump are respectively installed, suction pipes are installed at the bottoms of the extraction pump and the back - extraction pump, and connecting pipes that can prevent the reverse flow of the solution are installed at the tops of the extraction pump and the back - extraction pump.

[0010] For the above - mentioned extraction - back - extraction circulation treatment device for purifying MBT crude product, one of the connecting pipes is communicated with the extraction tower, and the other connecting pipe is communicated with the back - extraction tower.

[0011] For the above - mentioned extraction - back - extraction circulation treatment device for purifying MBT crude product, an anti - reverse - flow housing is installed on the connecting pipe.

[0012] For the above - mentioned extraction - back - extraction circulation treatment device for purifying MBT crude product, an installation plate is arranged inside the anti - reverse - flow housing, and a sealing plate matching the connecting pipe is arranged at the bottom of the installation plate.

[0013] For the above - mentioned extraction - back - extraction circulation treatment device for purifying MBT crude product, a mounting seat is further fixedly connected to the top of the inner wall of the connecting pipe, a mounting slide rod is fixedly connected to the bottom of the mounting seat, a mounting slide sleeve is slidably connected to the mounting slide rod, and one side of the mounting slide sleeve close to the mounting plate is fixedly connected to the side surface of the mounting plate.

[0014] For the above - mentioned extraction - back - extraction circulation treatment device for purifying MBT crude product, a sleeve spring is further sleeved on the mounting slide rod.

[0015] For the above - mentioned extraction - back - extraction circulation treatment device for purifying MBT crude product, a sealing gasket matching the connecting pipe is further fixedly connected to the bottom of the sealing plate.

[0016] The present utility model has at least the following beneficial effects:

[0017] In the present utility model, an extraction - back - extraction circulation treatment device for purifying MBT crude product is realized. When the extraction liquid is transported by the extraction pump, the extraction liquid extrudes the gasket, causing the gasket to disengage from the sealing of the connecting pipe. Thus, the extraction liquid can be transported through the connecting pipe into the extraction tower. When the extraction pump stops transporting, under the elastic force of the sleeve spring, the sealing plate at the bottom of the mounting plate can be driven to move downward, and the connecting pipe can be blocked by the gasket, effectively avoiding the backflow of the extraction liquid and ensuring the stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the extraction - back - extraction circulation treatment device for purifying MBT crude product of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the anti - backflow housing in the extraction - back - extraction circulation treatment device for purifying MBT crude product of the present utility model;

[0021] Figure 3 is a schematic structural diagram of the mounting plate in the extraction - back - extraction circulation treatment device for purifying MBT crude product of the present utility model.

[0022] Description of the reference numerals in the drawings:

[0023] 1, base; 2, extraction tower; 3, back - extraction tower; 4, liquid storage tank; 5, extraction pump; 6, back - extraction pump; 7, water suction pipe; 8, connecting pipe;

[0024] 201, first connecting pipe;

[0025] 301, second connecting pipe;

[0026] 801, anti - backflow housing;

[0027] 802, mounting plate; 8021, sealing plate; 8022, gasket;

[0028] 803, mounting seat; 8031, mounting slide bar; 8032, mounting slide sleeve; 8033, sleeve spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will describe in detail the embodiments of the present application in conjunction with the drawings and embodiments, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0030] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present utility model.

[0031] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the communication inside two elements; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0032] Please refer to Figures 1 to 3 As shown, an extraction - back - extraction circulation treatment device for purifying MBT crude products provided by an embodiment of the present utility model includes: a base 1. On one side of the top of the base 1, an extraction tower 2 for purifying MBT crude products is installed. On the other side of the top of the base 1, a back - extraction tower 3 for purifying MBT crude products is installed. A liquid storage tank 4 is installed between the extraction tower 2 and the back - extraction tower 3. On both sides of the top of the liquid storage tank 4, an extraction pump 5 and a back - extraction pump 6 are respectively installed. At the bottom of both the extraction pump 5 and the back - extraction pump 6, a water suction pipe 7 is installed. At the top of both the extraction pump 5 and the back - extraction pump 6, a communicating pipe 8 that can prevent the reverse flow of the solution is installed;

[0033] Among them, the bottom of the extraction tower 2 is communicated with the liquid storage tank 4 through a first connecting pipe 201, and the bottom of the back - extraction tower 3 is communicated with the liquid storage tank 4 through a second connecting pipe 301.

[0034] Please refer to Figures 1 to 3 As shown, one of the communicating pipes 8 is communicated with the extraction tower 2, and the other communicating pipe 8 is communicated with the back - extraction tower 3.

[0035] Please refer to Figures 1 to 3 As shown, an anti - reverse - flow housing 801 is installed on the communicating pipe 8.

[0036] Please refer to Figures 1 to 3 As shown, an installation plate 802 is arranged inside the anti - reverse - flow housing 801, and a sealing plate 8021 matching the communicating pipe 8 is arranged at the bottom of the installation plate 802.

[0037] Please refer to Figures 1 to 3As shown, a mounting seat 803 is also fixedly connected to the top of the inner wall of the connecting pipe 8. A mounting slide rod 8031 is fixedly connected to the bottom of the mounting seat 803. A mounting slide sleeve 8032 is slidably connected to the mounting slide rod 8031. The side of the mounting slide sleeve 8032 close to the mounting plate 802 is fixedly connected to the side of the mounting plate 802.

[0038] Please refer to Figures 1 to 3 As shown, a sleeve spring 8033 is also sleeved on the mounting slide rod 8031.

[0039] Please refer to Figures 1 to 3 As shown, a sealing gasket 8022 matching the connecting pipe 8 is also fixedly connected to the bottom of the sealing plate 8021;

[0040] By adopting the above technical solution, the sealing performance of the connection between the sealing plate 8021 and the connecting pipe 8 is increased by setting the sealing gasket 8022, thereby increasing the anti-backflow effect of the extraction liquid.

[0041] The working principle of the present utility model is as follows: When the extraction liquid is transported through the extraction pump 5, the extraction liquid squeezes the sealing gasket 8022, and the sealing gasket 8022 is separated from the sealing of the connecting pipe 8, so that the extraction liquid can be transported to the extraction tower 2 through the connecting pipe 8. When the extraction pump 5 cancels the transportation, under the elastic force of the sleeve spring 8033, the sealing plate 8021 at the bottom of the mounting plate 802 can be driven to move downward, and the connecting pipe 8 can be blocked by the sealing gasket 8022, so that the backflow of the extraction liquid can be effectively avoided, and thus the stable operation of the equipment can be ensured.

[0042] The above description shows and describes several preferred embodiments of the present utility model. However, as mentioned above, it should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in the relevant field. And the changes and modifications made by those skilled in the art that do not depart from the spirit and scope of the present utility model should all be within the protection scope of the appended claims of the present utility model.

Claims

1. An extraction-strip extraction cycle treatment device for purification of MBT crude product, comprising a base (1), characterized in that: An extraction tower (2) for purifying MBT crude products is installed on one side of the top of the base (1), and a stripping tower (3) for purifying MBT crude products is installed on the other side of the top of the base (1). A liquid storage tank (4) is installed between the extraction tower (2) and the stripping tower (3). An extraction pump (5) and a stripping pump (6) are installed on both sides of the top of the liquid storage tank (4). The bottoms of the extraction pump (5) and the stripping pump (6) are both installed with water suction pipes (7), and the tops of the extraction pump (5) and the stripping pump (6) are both installed with connecting pipes (8) for preventing solution backflow.

2. The extraction-stripping cycle treatment device for purifying MBT crude product according to claim 1, characterized in that: One of the connecting pipes (8) is interconnected with the extraction tower (2), and another of the connecting pipes (8) is interconnected with the stripping tower (3).

3. The extraction-stripping cycle treatment device for purifying MBT crude product according to claim 2, characterized in that: The connecting pipe (8) is provided with an anti-backflow housing (801).

4. The extraction-stripping cycle treatment device for purifying MBT crude product according to claim 3, characterized in that: A mounting plate (802) is provided inside the anti-backflow housing (801), and a sealing plate (8021) matching the connecting pipe (8) is provided at the bottom of the mounting plate (802).

5. The extraction-stripping cycle treatment device for purifying MBT crude product according to claim 4, characterized in that: The top of the inner wall of the connecting pipe (8) is also fixedly connected to a mounting seat (803), the bottom of the mounting seat (803) is fixedly connected to a mounting slide rod (8031), the mounting slide rod (8031) is slidably connected to a mounting sleeve (8032), and the side of the mounting sleeve (8032) close to the mounting plate (802) is fixedly connected to the side of the mounting plate (802).

6. The extraction-stripping cycle treatment device for purifying MBT crude product according to claim 5, characterized in that: The installation slide rod (8031) is also sleeved with a sleeve spring (8033).

7. The extraction-stripping cycle treatment device for purifying MBT crude product according to claim 6, characterized in that: The bottom of the sealing plate (8021) is also fixedly connected to a sealing gasket (8022) that matches the connecting pipe (8).

Images