A mother liquor treatment and recycling alkalization rectifying column

Abstract

The utility model discloses a kind of mother liquor processing and application alkalization rectifying tower, it is related to resin processing equipment field, including rectifying tower body;Heat preservation structure is placed on the outer wall on the top of rectifying tower body, the heat preservation structure includes heat preservation cylinder, the heat preservation cylinder is fixedly installed on the outer wall on the top of rectifying tower body, the inside of heat preservation cylinder is filled with heat preservation filler;Tower plate is placed inside rectifying tower body, a plurality of screen holes are set on the tower plate, and the screen hole in it is uniformly installed with elastic cover, a kind of mother liquor processing and application alkalization rectifying tower of the utility model, the utility model is filled with heat preservation filler by setting heat preservation cylinder, to improve the heat preservation effect of the top of rectifying tower body, while setting around pipe, around the top of rectifying tower body, then inject the water of specific temperature into the inside of the pipe to the top end, after the around of entire around pipe, so that the temperature of the top of rectifying tower body is kept unchanged, better assist mother liquor evaporation rectification.

Description

Technical Field

[0001] This utility model relates to the technical field of resin processing equipment, and in particular to an alkalization distillation tower for mother liquor treatment. Background Technology

[0002] Porous microspheres are a type of functional polymer material, also known as macroporous resins. They are a class of organic polymer adsorbents with good adsorption properties that were developed in the late 1970s. They have a three-dimensional spatial pore structure with large pore size and specific surface area. They are insoluble in acids, alkalis, and organic solvents such as ethanol, acetone, and hydrocarbons. They are stable to oxygen, heat, and chemical reagents. Currently, macroporous resins are mainly used in wastewater treatment, pharmaceutical industry, chemical industry, analytical chemistry, and clinical identification.

[0003] During resin processing, an alkali distillation column is needed to treat the mother liquor. However, in the actual operation of existing alkali distillation columns, the top of the column is exposed to the outside for a long time, and the temperature of the steam will drop as it moves upward. Therefore, it is necessary to add a heat preservation structure to ensure the temperature of the steam. However, the traditional heat preservation is set on the distillation column body, and it is difficult to determine its heat preservation effectiveness in the long term. Therefore, a mother liquor treatment using an alkali distillation column is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an alkalization distillation column for mother liquor treatment, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mother liquor treatment alkalization distillation column, comprising a distillation column body; a heat insulation structure placed on the outer wall of the top of the distillation column body, the heat insulation structure comprising a heat insulation cylinder, the heat insulation cylinder being fixedly installed on the outer wall of the top of the distillation column body, the interior of the heat insulation cylinder being filled with heat insulation packing; multiple trays placed inside the distillation column body, the trays having multiple sieve holes, several of which are fitted with elastic covers; a surrounding pipe provided on the outer wall of the top of the distillation column body, the surrounding pipe being located inside the heat insulation cylinder, and both ends of the surrounding pipe being provided with connecting pipes.

[0006] As a preferred embodiment of this utility model, the bottom end of the distillation column is provided with a discharge pipe, one side of the bottom of the distillation column is provided with an air inlet pipe, and the middle part of the distillation column is provided with a feed pipe.

[0007] As a preferred embodiment of this utility model, an outlet pipe is fixedly provided at the top of the distillation column, a reflux pipe is provided at the top of the distillation column, and multiple supports are fixedly installed at the connection between the distillation column and the floor slab.

[0008] As a preferred technical solution of this utility model, a detection box is installed on one side of the top of the distillation column through one of the connecting pipes. A thermometer is installed inside the detection box, and a control valve is fixedly installed on one of the connecting pipes.

[0009] As a preferred technical solution of this utility model, each of the multiple elastic covers has a vertical tube fixedly installed at its top, and each of the multiple vertical tubes has a horizontal sieve hole.

[0010] As a preferred embodiment of this utility model, an overflow weir is fixedly installed on one side of the top of the tower plate, and a downcomer is provided on one side of the bottom of the tower plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model improves the insulation effect of the top of the distillation column by setting up an insulation cylinder filled with insulation packing. At the same time, a surrounding pipe is set up to surround the top of the distillation column. Water at a specific temperature is then injected into the top pipe. The actual temperature difference can be detected by a thermometer to determine whether the insulation cylinder and insulation packing are effective. Hot water can also be connected to the outside and pass through the entire surrounding pipe to keep the temperature at the top of the distillation column constant, thus better assisting the evaporation and distillation of the mother liquor.

[0012] 2. This utility model increases the contact area, contact direction and contact time between steam and mother liquor by setting up a tower plate and installing elastic covers at the top of several sieve holes on the tower plate. Then, vertical pipes are installed on multiple elastic covers, and horizontal sieve holes are opened on the vertical pipes. This prevents the liquid that should be evaporated from the mother liquor from being discharged from the discharge pipe due to insufficient contact time and insufficient contact area with the tower plate, which would have a negative impact on the distillation effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the heat-insulating cylinder of this utility model; Figure 3 This is a schematic diagram of the detection box structure of this utility model; Figure 4 This is a schematic diagram of the tower plate structure of this utility model.

[0014] In the diagram: 1. Distillation column body; 2. Feed pipe; 3. Detection box; 4. Discharge pipe; 5. Gas outlet pipe; 6. Gas inlet pipe; 7. Insulation cylinder; 8. Connecting pipe; 9. Support; 10. Thermometer; 11. Control valve; 12. Circulating pipe; 13. Insulating packing; 14. Tray; 15. Sieve holes; 16. Elastic cover; 17. Vertical pipe; 18. Horizontal sieve holes; 19. Overflow weir; 20. Downcomer; 21. Reflux pipe. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1 to 4 This utility model provides a technical solution for mother liquor treatment using an alkali distillation column: Example 1:

[0017] according to Figure 1 , Figure 2 and Figure 3 As shown, an alkalization distillation column for mother liquor treatment includes a distillation column body 1, a discharge pipe 4 at the bottom of the distillation column body 1, an inlet pipe 6 on one side of the bottom of the distillation column body 1, a feed pipe 2 in the middle of the distillation column body 1, an outlet pipe 5 fixedly installed at the top of the distillation column body 1, a reflux pipe 21 installed at the top of the distillation column body 1, and multiple supports 9 fixedly installed at the connection between the distillation column body 1 and the floor slab; a heat insulation structure is placed on the outer wall of the top of the distillation column body 1, the heat insulation structure includes a heat insulation cylinder 7, the heat insulation cylinder 7 is fixedly installed on the outer wall of the top of the distillation column body 1, and the interior of the heat insulation cylinder 7 is filled with heat insulation packing 13.

[0018] A surrounding tube 12 is provided on the outer wall of the top of the distillation column 1, and the surrounding tube 12 is located inside the insulation cylinder 7. Both ends of the surrounding tube 12 are provided with connecting pipes 8. A detection box 3 is installed on one side of the top of the distillation column 1 through one of the connecting pipes 8. A thermometer 10 is installed inside the detection box 3, and a control valve 11 is fixedly installed on one of the connecting pipes 8.

[0019] In practical use, this utility model utilizes an alkali distillation column for mother liquor treatment. The mother liquor is fed into the distillation column 1 through the feed pipe 2, while steam enters through the inlet pipe 6. The mother liquor flows through multiple trays 14 in stages, and the incoming steam rises, carrying away substances with lower boiling points from the mother liquor. These substances rise to the top of the distillation column 1, where the insulation cylinder 7 and the internal insulation packing 13 accumulate heat. This ensures that the carried-away substances and steam can be discharged through the outlet pipe 5. The operator can periodically check the effectiveness of the insulation in the insulation cylinder 7 and the insulation packing 13. Specifically, water at a constant temperature is connected to the top through the connecting pipe 8. After the water enters the surrounding pipe 12, it enters the insulation cylinder 7. After a period of time, the water is drawn out from the bottom connecting pipe 8 and enters the detection box 3. The temperature of the water can be observed using a thermometer 10 and compared with that at the time of initial connection. If the temperature difference is within a reasonable range, the insulation is effective. At the same time, hot water can also be connected to the surrounding pipe 12 to supplement the heat at the top of the distillation column 1.

[0020] Example 2:

[0021] Based on Example 1, such as Figure 4 As shown, multiple trays 14 are placed inside the distillation column body 1. Multiple sieve holes 15 are opened on the trays 14. Several sieve holes 15 are equipped with elastic covers 16. Vertical pipes 17 are fixedly installed at the top of the multiple elastic covers 16. Horizontal sieve holes 18 are opened on the multiple vertical pipes 17. An overflow weir 19 is fixedly installed on one side of the top of the tray 14. A downcomer 20 is provided on one side of the bottom of the tray 14.

[0022] In practical application, this utility model utilizes an alkali distillation column for mother liquor treatment. During the actual distillation process, after the steam enters, it gradually rises from the bottom of multiple trays 14, passes through multiple sieve holes 15, and contacts the liquid phase on the sieve trays 14, causing the low-boiling substances in the liquid phase to volatilize. Some steam enters vertically upward from the sieve holes 15 to contact the liquid phase, while some steam enters the elastic cover 16 and then enters the vertical pipe 17, entering the liquid phase through multiple horizontal sieve holes 18. This increases the contact area and direction between the steam and the liquid phase, as well as the duration of steam heating of the liquid phase (increasing the steam flow path, thereby increasing the time the steam is in the liquid phase). This allows for better contact with the low-boiling substances in the liquid phase, fully enabling the low-boiling substances to volatilize and separate.

[0023] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

Claims

1. A mother liquor treatment alkalization distillation column, characterized in that, include: Distillation column body (1); A heat insulation structure is placed on the outer wall of the top of the distillation column (1). The heat insulation structure includes a heat insulation cylinder (7). The heat insulation cylinder (7) is fixedly installed on the outer wall of the top of the distillation column (1). The interior of the heat insulation cylinder (7) is filled with heat insulation filler (13). Multiple trays (14) are placed inside the distillation column body (1). Multiple sieve holes (15) are provided on the trays (14). Elastic covers (16) are installed on several of the sieve holes (15). A surrounding tube (12) is provided on the outer wall of the top of the distillation column body (1). The surrounding tube (12) is located inside the heat preservation cylinder (7). Both ends of the surrounding tube (12) are provided with connecting pipes (8).

2. The mother liquor treatment alkalization distillation column according to claim 1, characterized in that: The bottom end of the distillation column (1) is provided with a discharge pipe (4), the bottom side of the distillation column (1) is provided with an air inlet pipe (6), and the middle part of the distillation column (1) is provided with a feed pipe (2).

3. The mother liquor treatment alkalization distillation column according to claim 1, characterized in that: The top of the distillation column (1) is fixedly provided with an outlet pipe (5), the top of the distillation column (1) is provided with a reflux pipe (21), and multiple supports (9) are fixedly installed at the connection between the distillation column (1) and the floor.

4. The mother liquor treatment alkalization distillation column according to claim 1, characterized in that: A detection box (3) is installed on one side of the top of the distillation column (1) through one of the connecting pipes (8). A thermometer (10) is installed inside the detection box (3), and a control valve (11) is fixedly installed on one of the connecting pipes (8).

5. The mother liquor treatment alkalization distillation column according to claim 1, characterized in that: Each of the multiple elastic covers (16) has a vertical tube (17) fixedly installed at its top, and each of the multiple vertical tubes (17) has a horizontal sieve hole (18).

6. The mother liquor treatment alkalization distillation column according to claim 1, characterized in that: An overflow weir (19) is fixedly installed on one side of the top of the tower plate (14), and a downcomer (20) is provided on one side of the bottom of the tower plate (14).

Images