Continuous plate type extractor

Abstract

The utility model discloses a continuous plate-type extractor which comprises a sieve plate, the sieve plate is mounted in an extractor body, an overflow weir is mounted on the side edge of the top of the sieve plate, a baffle is mounted on one side, far away from the overflow weir, of the top of the sieve plate, a downcomer aligned with the overflow weir is mounted at the bottom of the sieve plate, and sieve holes I and sieve holes II are uniformly formed in the sieve plate. According to the continuous plate type extractor, the second sieve hole and the first sieve hole are both of a prismatic table structure, the top sides of the second sieve hole and the first sieve hole coincide, so that no gap exists between the tops of the second sieve hole and the first sieve hole, a gap exists between the bottom of the second sieve hole and the bottom of the first sieve hole, a 4, 4-oxo-bis-benzenesulfonyl chloride liquid phase can completely flow downwards, and the number of the 4, 4-oxo-bis-benzenesulfonyl chloride liquid phase is reduced. According to the 4, 4-oxydibenzenesulfonyl chloride extractor, the residual quantity of a 4, 4-oxydibenzenesulfonyl chloride liquid phase on the sieve plate is reduced, so that the liquid phase can fully flow out from the kettle liquid outlet pipe, the waste amount of the 4, 4-oxydibenzenesulfonyl chloride liquid phase is reduced, the 4, 4-oxydibenzenesulfonyl chloride can be fully extracted through the extractor body, and the purity of the 4, 4-oxydibenzenesulfonyl chloride is improved.

Description

Technical Field

[0001] This utility model relates to the field of plate extraction technology, specifically a continuous plate extractor. Background Technology

[0002] 4,4'-Oxobisbenzenesulfonyl chloride is a white to off-white solid powder at room temperature and pressure. The production of 4,4'-oxobisbenzenesulfonyl chloride requires extraction and purification processes. The refining process for ultra-high purity 4,4'-oxobisbenzenesulfonyl chloride requires a plate extractor, which removes gases from the 4,4'-oxobisbenzenesulfonyl chloride mixture.

[0003] A plate extractor is a staged contact mass transfer device used in gas-liquid or liquid-liquid systems. It consists of a cylindrical tower body and several trays horizontally arranged at certain intervals inside the tower. Under the action of gravity, the liquid flows from top to bottom through each tray and is discharged at the bottom of the tower. Under the pressure difference, the gas passes through each tray from bottom to top and is discharged at the top of the tower. Each tray maintains a certain depth of liquid layer. The gas is dispersed into the liquid layer through the tray, and interphase contact mass transfer is carried out.

[0004] Currently, the plate extractors commonly found on the market use evenly spaced circular holes on the internal trays to allow liquid to flow downwards. Due to the structure of the circular holes, there are gaps between the holes at the top of the trays. Since the trays are horizontal, liquid will remain in the gaps between adjacent circular holes. Because multiple trays are installed inside the extractor, the amount of liquid extracted by the plate extractor will be reduced. Utility Model Content

[0005] The purpose of this invention is to provide a continuous plate extractor to solve the problem mentioned in the background art that the current plate extractors on the market reduce the extraction yield of 4,4'-oxobisbenzenesulfonyl chloride.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a continuous plate extractor, comprising a sieve plate installed inside the extractor body, an overflow weir installed on the top side of the sieve plate, a baffle plate installed on the top side of the sieve plate away from the overflow weir, a downcomer installed at the bottom of the sieve plate aligned with the overflow weir, and sieve holes one and two evenly distributed on the sieve plate, wherein both sieve holes one and two are configured with an upper diameter larger than the lower diameter, and the upper diameter sides of sieve holes one and two overlap and fit together.

[0007] Preferably, a gas pipe is installed on the top of the extractor body, a reflux liquid inlet pipe and a vessel liquid outlet pipe are installed on one side of the extractor body, the reflux liquid inlet pipe is located above the vessel liquid outlet pipe, and a feed liquid pipe is installed on the other side of the extractor body.

[0008] Preferably, multiple sieve plates are provided, and a channel is opened on the side of the sieve plate near the overflow weir, with the downcomer located directly below the channel.

[0009] Preferably, the downcomer has a through groove on its side.

[0010] Preferably, the overflow weirs on every two adjacent sieve plates are staggered, and the downcomer is attached to the baffle on the adjacent sieve plate.

[0011] Preferably, the first sieve hole and the second sieve hole are arranged alternately, and both the first sieve hole and the second sieve hole are truncated pyramidal structures.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] Both sieve aperture 2 and sieve aperture 1 have a frustum structure. The top sides of sieve aperture 2 and sieve aperture 1 overlap, thus eliminating the gap between their tops. However, there is a gap between the bottom of sieve aperture 2 and the bottom of sieve aperture 1, allowing the 4,4-oxobisbenzenesulfonyl chloride liquid phase to flow completely downwards. This reduces the amount of 4,4-oxobisbenzenesulfonyl chloride liquid phase remaining on the sieve plate, ensuring that the liquid phase can flow out fully from the outlet pipe of the vessel, reducing the waste of 4,4-oxobisbenzenesulfonyl chloride liquid phase. The extractor body can fully extract 4,4-oxobisbenzenesulfonyl chloride, thereby improving its purity. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the main cross-section of the present invention;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the sieve plate of this utility model;

[0017] Figure 4 This is a side view of the overflow weir structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the main cross-sectional structure of the sieve plate of this utility model.

[0019] In the diagram: 1. Extractor body; 2. Outlet pipe of the vessel liquid; 3. Feed pipe; 4. Reflux inlet pipe; 5. Gas pipe; 6. Overflow weir; 7. Sieve hole two; 8. Sieve plate; 9. Downcomer; 10. Sieve hole one; 11. Channel; 12. Through groove; 13. Baffle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5 The present invention provides the following technical solution:

[0022] A continuous plate extractor includes a sieve plate 8 installed inside the extractor body 1. An overflow weir 6 is installed on the top side of the sieve plate 8, and two adjacent overflow weirs 6 are located on opposite sides in the height direction. A baffle 13 is installed on the top side of the sieve plate 8 away from the overflow weir 6. A downcomer 9 aligned with the overflow weir 6 is installed at the bottom of the sieve plate 8. A first sieve hole 10 and a second sieve hole 7 are evenly opened on the sieve plate 8. Both the first sieve hole 10 and the second sieve hole 7 are designed with an upper diameter larger than the lower diameter, and the upper diameter sides of the first sieve hole 10 and the second sieve hole 7 overlap and fit together.

[0023] A gas pipe 5 is installed on the top of the extractor body 1. A reflux liquid inlet pipe 4 and a vessel liquid outlet pipe 2 are installed on one side of the extractor body 1. The reflux liquid inlet pipe 4 is located above the vessel liquid outlet pipe 2. A feed liquid pipe 3 is installed on the other side of the extractor body 1. Multiple sieve plates 8 are provided. A channel 11 is opened on the side of the sieve plate 8 near the overflow weir 6. A downcomer pipe 9 is located directly below the channel 11. A through groove 12 is opened on the side of the downcomer pipe 9.

[0024] The 4,4-oxobisbenzenesulfonyl chloride mixture is introduced into the extractor body 1 through the feed pipe 3. The extractor body 1 is equipped with a heating function and can be heated by an external heat source, such as steam heating, to promote solvent evaporation and the extraction process. Under heating conditions, after being dispersed by the sieve plate 8, the gas inside the 4,4-oxobisbenzenesulfonyl chloride mixture rises through the sieve holes 10 and 7 and disperses into the liquid layer. The sieve plate 8 is provided with a channel 11. Through the arrangement of the channel 11 and the through groove 12, the liquid on the overflow weir 6 can flow to the sieve plate 8 below. The gas passes through the liquid layer on the sieve plate 8 from bottom to top, so that the gas and liquid phases are fully contacted. The volatile components are transferred to the gas phase and sent out through the gas pipe 5, while the non-volatile components are transferred to the liquid phase and sent out through the liquid outlet pipe 2, thus separating the gas inside the 4,4-oxobisbenzenesulfonyl chloride mixture.

[0025] The overflow weirs 6 on each pair of adjacent sieve plates 8 are staggered, and the downcomer 9 is attached to the baffle 13 on the adjacent sieve plate 8. The top of the baffle 13 blocks the liquid, allowing the liquid to flow through the downcomer 9, the channel 11 and the trough 12 to the middle of the sieve plate 8, so that more liquid can be located in the middle of the sieve plate 8, which facilitates full contact between the liquid and the gas.

[0026] The sieve holes 10 and 7 are arranged alternately. Both sieve holes 10 and 7 are designed with an upper diameter larger than the lower diameter. Both sieve holes 10 and 7 are inverted truncated pyramid structures. The upper diameter sides of sieve holes 10 and 7 are overlapped and fitted together.

[0027] Because the upper diameter sides of sieve hole 10 and sieve hole 2 7 overlap and fit together, the gap between sieve hole 10 and the adjacent sieve hole 2 7 can be reduced, thus reducing the amount of liquid phase of 4,4-oxobisbenzenesulfonyl chloride remaining on sieve plate 8. This allows for a greater amount of liquid phase to flow out through the reactor liquid outlet pipe 2, reducing the amount of liquid phase wasted by 4,4-oxobisbenzenesulfonyl chloride.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous plate extractor, characterized in that, Includes a sieve plate (8), which is installed inside the extractor body (1). The sieve plate (8) is evenly provided with sieve holes one (10) and sieve holes two (7). Both sieve holes one (10) and sieve holes two (7) are designed with an upper diameter larger than a lower diameter, and the upper port sides of sieve holes one (10) and sieve holes two (7) overlap and fit together.

2. The continuous plate extractor according to claim 1, characterized in that: An overflow weir (6) is installed on the top side of the sieve plate (8), a baffle (13) is installed on the top side of the sieve plate (8) away from the overflow weir (6), and a downcomer (9) aligned with the overflow weir (6) is installed at the bottom of the sieve plate (8).

3. A continuous plate extractor according to claim 1, characterized in that: A gas pipe (5) is installed on the top of the extractor body (1). A reflux liquid inlet pipe (4) and a kettle liquid outlet pipe (2) are installed on one side of the extractor body (1). The reflux liquid inlet pipe (4) is located above the kettle liquid outlet pipe (2). A feed liquid pipe (3) is installed on the other side of the extractor body (1).

4. A continuous plate extractor according to claim 1, characterized in that: The sieve plate (8) is provided in multiple ways. A channel (11) is opened on the side of the sieve plate (8) near the overflow weir (6), and the downcomer (9) is located directly below the channel (11).

5. A continuous plate extractor according to claim 2, characterized in that: The downcomer (9) has a through groove (12) on its side.

6. A continuous plate extractor according to claim 1, characterized in that: The overflow weirs (6) on each pair of adjacent sieve plates (8) are staggered, and the downcomer (9) is attached to the baffle (13) on the adjacent sieve plate (8).

7. A continuous plate extractor according to claim 1, characterized in that: The sieve holes one (10) and sieve holes two (7) are arranged alternately, and both sieve holes one (10) and sieve holes two (7) are inverted frustum structures.

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