Multi-stage extractive distillation tower

Abstract

The utility model relates to the technical field of rectifying towers, and provides a multi-stage extractive rectifying tower which comprises a plurality of stacked cylinders, each cylinder comprises a first cylinder and a second cylinder, the first cylinder is connected with the second cylinder through a connecting block, a filler cylinder is arranged between the first cylinder and the second cylinder, and the filler cylinder is connected with the first cylinder through a connecting block. Filler is arranged in the filler cylinder, a containing block is arranged on one side of the filler cylinder, and a fixing mechanism used for fixing the filler cylinder or detaching the filler cylinder is arranged on one side of the containing block. According to the technical scheme, a worker can replace the filler conveniently, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifying tower technical field, specifically, and relate to a kind of multistage extraction rectifying tower. BACKGROUND

[0002] Multistage extraction rectifying tower is a kind of equipment combining extraction and rectifying two separation technologies, is widely used in chemical industry, petrochemical industry, pharmaceutical industry etc., for separating and purifying the mixture with similar boiling point or difficult to separate by single rectification. The tower is operated by multiple stages, first by liquid-liquid extraction to transfer the target component to the solvent, and then further separate the components by rectification. Multistage extraction rectifying tower structure is usually composed of multiple trays or packing, and the mass transfer and distribution of components are realized by liquid-gas or liquid-liquid contact in the tower, with high efficiency and accurate separation capacity.

[0003] The existing extraction rectifying tower includes: a gas phase discharge cylinder body provided with an upper end at the top; a plurality of packing cylinder bodies, each packing cylinder body is sequentially provided with a slot type liquid distributor, packing and a liquid collector from top to bottom in the inner cavity, the upper part of each packing cylinder body is fixedly sleeved with an upper connecting flange, and the lower part of each packing cylinder body is fixedly sleeved with a lower connecting flange, the radial outer expansion of the upper connecting flange and the lower connecting flange, and the equivalent circumference formed by the flange positioning holes arranged on the outer ring is located on the outer periphery of the packing cylinder body; and a liquid phase discharge cylinder body provided with a lower end at the bottom; the lower part of the gas phase discharge cylinder body is fixedly sleeved with a first lower connecting flange, and the upper part of the liquid phase discharge cylinder body is fixedly sleeved with a first upper connecting flange.

[0004] The above technology sets upper and lower connecting flanges on the outside of each cylinder body to form a connecting structure, thereby increasing the number of stacked cylinder bodies, allowing the packing cylinder bodies to be arranged in multiple levels, and enabling a single device to meet the needs of extraction rectification operations. However, after long-term use, the packing may be corroded, worn, clogged or aged due to the influence of raw materials, so the packing needs to be replaced regularly. In the above technology, the packing is arranged inside the packing cylinder, and the packing cylinder cannot be disassembled separately, which makes it time-consuming and laborious to replace the packing, thereby reducing the work efficiency of the workers. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of multistage extraction rectifying tower, which facilitates workers to replace packing and improves work efficiency.

[0006] The utility model discloses a technical scheme as follows: a multistage extraction rectifying column, including a plurality of layers of the cylinder of setting, each cylinder all includes first cylinder, second cylinder, it is connected through the connecting block between first cylinder and second cylinder, be equipped with the filler cylinder between first cylinder and second cylinder, be equipped with filler in the filler cylinder, one side of filler cylinder is equipped with the accommodation block, one side of accommodation block is equipped with the fixed mechanism for fixed filler cylinder or disassembled filler cylinder.

[0007] Further, the fixed mechanism includes a clamping block, a movable block and an elastic member, the clamping block is arranged on one side of the connecting block close to the filler cylinder and is fixedly connected with the connecting block, the movable block is slidably connected with the inner wall of the movable slot on one side of the accommodation block close to the clamping block, one end of the elastic member abuts against the side surface of the movable slot, the other end of the elastic member abuts against the movable block, and the movable block is provided with a clamping slot for clamping the clamping block.

[0008] Further, the movable slot is provided with a guide slot on each side, the movable block is provided with a guide block on each side and is fixedly connected with the movable block, and the guide block is slidably connected with the guide slot.

[0009] Further, the first cylinder and the second cylinder are each provided with a sealing mechanism on the side close to the filler cylinder, and the sealing mechanism is used for sealing the gap between the first cylinder and the filler cylinder and the gap between the second cylinder and the filler cylinder.

[0010] Further, the sealing mechanism includes a flexible cylinder, a sealing ring embedded in the flexible cylinder and a locking rod, the inner surface of the flexible cylinder is slidably connected with the outer surface of the first cylinder, one side of the flexible cylinder is provided with an opening, locking plates are arranged on both sides of the opening, the locking rod is provided with threaded segments at both ends, the rotation directions of the two threaded segments are opposite, and the two locking plates are respectively threadedly connected with the corresponding threaded segments.

[0011] Further, the locking rod is provided with a rotating block fixedly connected with the locking rod, and the cross section of the rotating block is hexagonal.

[0012] Further, the first cylinder and the second cylinder are each provided with a transparent observation window on the side surface.

[0013] Further, one side of the filler cylinder is fixedly connected with a handle, the handle is provided with a rubber sleeve, and the rubber sleeve is provided with anti-skid lines.

[0014] The utility model discloses a technical scheme as follows: a multistage extraction rectifying column, including a plurality of layers of the cylinder of setting, each cylinder all includes first cylinder, second cylinder, it is connected through the connecting block between first cylinder and second cylinder, be equipped with the filler cylinder between first cylinder and second cylinder, be equipped with filler in the filler cylinder, one side of filler cylinder is equipped with the accommodation block, one side of accommodation block is equipped with the fixed mechanism for fixed filler cylinder or disassembled filler cylinder.

[0015] The utility model discloses a first cylinder and second cylinder are divided to the cylinder, and are connected through the connecting block, make the first cylinder and second cylinder between leave enough space to install the packing cylinder. In this way, when the packing in a layer cylinder needs to be replaced, can conveniently replace the packing alone, need not to disassemble the whole cylinder to reduce the replacement cost and difficulty, improve the work efficiency of staff. Meanwhile, the fixed mechanism that sets up can ensure that the packing cylinder keeps stable in the rectifying tower operation process, prevents its sway or displacement, when needing to replace or overhaul the packing, the fixed mechanism is also convenient for operator to dismount and install the packing cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will make further detailed explanation in combination with the drawings and specific embodiment.

[0017] Figure 1 It is the structure schematic diagram of the utility model;

[0018] Figure 2 It is the structure schematic diagram of the first cylinder and second cylinder in this embodiment;

[0019] Figure 3 It is Figure 2 The enlarged schematic diagram in A of this embodiment;

[0020] Figure 4 It is the local structure section view schematic diagram of the packing cylinder in this embodiment;

[0021] Figure 5 It is Figure 4 The enlarged schematic diagram in B of this embodiment;

[0022] Figure 6 It is the structure schematic diagram of the sealing mechanism in this embodiment.

[0023] In the drawing: 1, cylinder;101, first cylinder;102, second cylinder;103, connecting block;104, packing cylinder;1041, packing;105, containing block;2, clamping block;201, movable block;202, elastic part;203, movable slot;204, clamping slot;205, guide slot;206, guide block;207, transparent observation window;208, handle;209, rubber sleeve;3, flexible cylinder;301, sealing ring;302, locking rod;303, opening;304, locking plate;305, rotating block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present application.

[0025] Embodiment one:

[0026] Reference Figures 1-5 A multi-stage extractive rectification column, comprising a plurality of stacked cylinder bodies 1, each cylinder body 1 comprising a first cylinder body 101 and a second cylinder body 102, the first cylinder body 101 and the second cylinder body 102 being connected by a connecting block 103 to divide the cylinder body 1 into the first cylinder body 101 and the second cylinder body 102 and connect the first cylinder body 101 and the second cylinder body 102 to leave sufficient space between the first cylinder body 101 and the second cylinder body 102 for installing a packing cylinder 104.

[0027] The packing cylinder 104 is arranged between the first cylinder body 101 and the second cylinder body 102, and the packing cylinder 104 is internally provided with packing 1041 for increasing the contact area between liquid phase and gas phase to improve the fractionation efficiency, one side of the packing cylinder 104 is provided with a containing block 105, and one side of the containing block 105 is provided with a fixing mechanism for fixing or dismounting the packing cylinder 104.

[0028] When the packing in a certain layer of the cylinder body 1 needs to be replaced, the detachably arranged packing tower can conveniently replace the packing individually without dismounting the entire cylinder body 1, thereby reducing the replacement cost and difficulty and improving the work efficiency of the staff. Meanwhile, the fixing mechanism can ensure that the packing cylinder 104 remains stable during the operation of the rectification column and prevent it from shaking or shifting, and the fixing mechanism also facilitates the operation personnel to dismount and install the packing cylinder 104 when the packing needs to be replaced or overhauled.

[0029] Specifically, the fixing mechanism comprises a clamping block 2, a movable block 201 and an elastic member 202 (the elastic member 202 can be a cylindrical compression spring, which is not limited in the embodiment), the clamping block 2 is arranged on one side of the connecting block 103 close to the packing cylinder 104 and is fixedly connected with the connecting block 103, the containing block 105 is provided with a movable groove 203 on one side close to the clamping block 2, the movable block 201 is slidably connected with the inner wall of the movable groove 203, one end of the elastic member 202 abuts against the side surface of the movable groove 203, the other end of the elastic member 202 abuts against the movable block 201, and the movable block 201 is provided with a clamping groove 204 for clamping the clamping block 2.

[0030] When the staff needs to disassemble the filler cylinder 104, the movable block 201 can be pushed to move in the direction of the compression elastic member 202, so that the clamping groove 204 on the movable block 201 is disengaged from the clamping block 2. Then, rotate the filler cylinder 104, so that the position of the movable block 201 is staggered with the position of the clamping block 2, and the staff can take down the filler cylinder 104 and replace the internal filler. In order to facilitate the staff to take down the filler cylinder 104, one side of the filler cylinder 104 is fixedly connected with a handle 208. The handle 208 is provided with a rubber sleeve 209, and the surface of the rubber sleeve 209 is provided with anti-skid lines, which provides a convenient gripping point for the operator, making it easier to install, disassemble and carry the filler cylinder 104. The rubber sleeve 209 and the anti-skid lines increase the friction between the hand and the handle 208, effectively preventing the hand from slipping during operation, thereby improving the safety of the operation.

[0031] When the filler replacement is completed, the staff places the filler cylinder 104 between the first cylinder body 101 and the second cylinder body 102, then compresses the movable block 201 to retract it into the movable groove 203, and then rotates the filler cylinder 104 so that the clamping groove 204 on the movable block 201 is in position with the clamping block 2. When the clamping groove 204 is in position with the clamping block 2, the staff releases the hand pressing the movable block 201, and the elastic member 202 will quickly recover the deformation to push the clamping groove 204 on the movable block 201 to engage with the clamping block 2, thereby fixing the filler cylinder 104.

[0032] The fixing mechanism in the embodiment only needs the staff to press the movable block 201 and rotate the filler cylinder 104 to a certain angle to complete the disassembly, which is simple and convenient to operate and saves time. In addition, no tools are needed during operation, and the staff can directly disassemble, avoiding the time to prepare tools, thereby improving the work efficiency.

[0033] In order to facilitate the staff to judge which layer of the cylinder 1 needs to replace the filler inside, a transparent observation window 207 is arranged on the side surface of each first cylinder body 101 and second cylinder body 102. The staff can obtain relevant information through the observation window to observe the gas-liquid flow in the rectifying tower, the working state of the filler, and whether there are problems such as material blockage and leakage. This helps to discover potential faults and abnormal conditions in time, so as to take corresponding measures for treatment, and ensures the safe and stable operation of the rectifying tower.

[0034] In addition, in order to prevent the active block 201 from being offset or misaligned during movement, a guide groove 205 is arranged on both sides of the active groove 203, and a guide block 206 is arranged on both sides of the active block 201, and the guide block 206 is fixedly connected with the active block 201, and the guide block 206 is slidably connected with the guide groove 205. The guide groove 205 on both sides of the active groove 203 cooperates with the guide block 206 on both sides of the active block 201 to provide accurate guidance for the movement of the active block 201. The guide block 206 slides in the guide groove 205 to limit the movement direction of the active block 201, prevent it from being offset, and enable the active block 201 to move smoothly and smoothly, thereby ensuring the stability and reliability of the fixing mechanism in long-term use. In addition, the smooth movement of the active block 201 can also ensure that the elastic member 202 is uniformly stressed, thereby prolonging the service life of the elastic member 202.

[0035] Embodiment two:

[0036] On the basis of embodiment one, referring to Figure 6 In this embodiment, a sealing mechanism is arranged on one side of the first cylinder body 101 and the second cylinder body 102 close to the filler cylinder 104, and the sealing mechanism is used to seal the gap between the first cylinder body 101 and the filler cylinder 104 and the gap between the second cylinder body 102 and the filler cylinder 104. The sealing mechanism arranged can solve the problem of material leakage caused by the gap between the first cylinder body 101, the second cylinder body 102 and the filler cylinder 104. It can prevent the gas-liquid mixture in the rectifying tower from leaking out of the gap, ensure that the rectification process is carried out in a closed environment, improve the rectification efficiency, reduce the material loss, and at the same time avoid the pollution to the environment.

[0037] Specifically, the sealing mechanism comprises a flexible cylinder 3 (the flexible cylinder 3 can be made of aluminum, aluminum alloy, iron or other materials with good toughness, ductility and deformation recovery ability), a sealing ring 301 embedded in the flexible cylinder 3 and a locking rod 302, the sealing ring 301 can be made of polytetrafluoroethylene (PTFE) or polyurethane (PU) material, which has good sealing property and low friction coefficient, ensuring that the sealing ring 301 moves smoothly on the outer surface of the first cylinder body 101 and the second cylinder body 102, the inside of the flexible cylinder 3 is slidably connected with the outer surface of the first cylinder body 101, one side of the flexible cylinder 3 is provided with an opening 303, and locking plates 304 are arranged on both sides of the opening 303, both ends of the locking rod 302 are provided with threaded sections, and the rotation directions of the two threaded sections are opposite, and the two locking plates 304 are respectively screwed with the corresponding threaded sections.

[0038] When the filler tube 104 is installed, the staff moves the flexible tube 3, so that the sealing ring 301 inside the flexible tube 3 is located between the first cylinder body 101 and the filler tube 104. Then, the locking rod 302 is rotated, and the threaded segments on both sides of the locking rod 302 drive the two locking plates 304 to move towards each other, so that the flexible tube 3 is deformed, and the inside of the flexible tube 3 pushes the sealing ring 301, thereby sealing the gap between the first cylinder body 101 and the filler tube 104, to prevent gas and liquid leakage. By rotating the locking rod 302, the two locking plates 304 are driven to move closer to or away from each other by the threaded segments on both ends of the locking rod 302, thereby adjusting the gripping degree of the flexible tube 3. This adjustable sealing mode can be adjusted according to the actual sealing requirements, ensuring the reliability of the sealing.

[0039] Further, the rotating block 305 is arranged on the locking rod 302, and the rotating block 305 is fixedly connected with the locking rod 302. The cross section of the rotating block 305 is hexagonal in shape. The locking rod 302 is provided with the rotating block 305 with a hexagonal cross section, which facilitates the rotation operation by using a common wrench tool. The hexagonal rotating block 305 is closely matched with the wrench, which can more labor-savingly and more accurately control the rotation angle of the locking rod 302, thereby accurately adjusting the gripping force of the sealing mechanism, and improving the operation efficiency.

[0040] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-stage extractive rectification column comprising a plurality of cylindrical bodies (1) arranged in a stack, characterized in that, Each of the barrel (1) comprises a first barrel (101), a second barrel (102), the first barrel (101) and the second barrel (102) are connected by a connecting block (103), the first barrel (101) and the second barrel (102) are provided with a filler cylinder (104), the filler cylinder (104) is internally provided with a filler (1041), one side of the filler cylinder (104) is provided with a containing block (105), one side of the containing block (105) is provided with a fixing mechanism for fixing or dismounting the filler cylinder (104).

2. A multi-stage extractive distillation column according to claim 1, characterized in that: The fixing mechanism comprises a clamping block (2), a movable block (201) and an elastic member (202), the clamping block (2) is arranged on one side of the connecting block (103) close to the filler cylinder (104), and the clamping block (2) is fixedly connected with the connecting block (103), one side of the containing block (105) close to the clamping block (2) is provided with a movable groove (203), the movable block (201) is in sliding connection with the inner wall of the movable groove (203), one end of the elastic member (202) is in abutment with the side surface of the movable groove (203), and the other end of the elastic member (202) is in abutment with the movable block (201), and the movable block (201) is provided with a clamping groove (204) for clamping the clamping block (2).

3. A multi-stage extractive distillation column according to claim 2, characterized in that: Both sides of the movable groove (203) are provided with guide grooves (205), both sides of the movable block (201) are provided with guide blocks (206), and the guide blocks (206) are fixedly connected with the movable block (201), and the guide blocks (206) are in sliding connection with the guide grooves (205).

4. A multi-stage extractive distillation column according to claim 1, characterized in that: One side of the first barrel (101) and the second barrel (102) close to the filler cylinder (104) is provided with a sealing mechanism, and the sealing mechanism is used for sealing the gap between the first barrel (101) and the filler cylinder (104) and the gap between the second barrel (102) and the filler cylinder (104).

5. A multi-stage extractive distillation column according to claim 4, characterized in that: The sealing mechanism comprises a flexible cylinder (3), a sealing ring (301) embedded in the flexible cylinder (3) and a locking rod (302), the inside of the flexible cylinder (3) is in sliding connection with the outer surface of the first barrel (101), one side of the flexible cylinder (3) is provided with an opening (303), both sides of the opening (303) are provided with locking plates (304), both ends of the locking rod (302) are provided with threaded segments, the rotation directions of the two threaded segments are opposite, and the two locking plates (304) are respectively in threaded connection with the corresponding threaded segments.

6. A multi-stage extractive distillation column according to claim 5, characterized in that: The locking rod (302) is provided with a rotating block (305), and the rotating block (305) is fixedly connected with the locking rod (302), and the cross section of the rotating block (305) is in hexagonal shape.

7. A multi-stage extractive distillation column according to claim 3, characterized in that: The first barrel (101) and the second barrel (102) are provided with transparent observation windows (207) on the side surfaces.

8. A multi-stage extractive distillation column according to claim 3, characterized in that: One side of the filler cylinder (104) is fixedly connected with a handle (208), the handle (208) is provided with a rubber sleeve (209), and the rubber sleeve (209) is provided with anti-skid lines.

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