Online reactor

Abstract

The utility model discloses an on-line reactor, which belongs to the technical field of chemical equipment and comprises a plurality of trays axially arranged at intervals and a plurality of one-way valve components, each one-way valve component comprises a valve seat and a valve core, the valve seats are arranged on the trays, the valve cores of the plurality of one-way valve components are mounted on the same valve rod, and the valve cores of the plurality of one-way valve components are mounted on the same valve rod. Through the trays which are axially arranged at intervals, the plurality of one-way valve assemblies can be arranged on the same axis, and then the valve cores of the plurality of one-way valve assemblies are connected through the valve rod, so that the opening and closing of all one-way valves can be simultaneously controlled through the same valve rod; the problems that a valve and a driving structure of the valve are difficult to arrange on an online reactor, so that the material flow direction is difficult to control, and the applicability is poor are solved.

Description

Technical Field

[0001] The utility model relates to a chemical equipment technology, in particular to an online reactor. Background Art

[0002] During oligomer homogenization in an inline reactor, a one-way valve is typically required to control the flow of materials within the reactor. However, the high-pressure environment within an inline reactor makes it difficult to deploy the valve's actuation mechanism, especially when multiple valves are required within the same reactor. Consequently, conventional techniques have made it impossible to control the flow of materials within the reactor.

[0003] For example, a "homogenizer" disclosed in a Chinese patent document, with publication number CN201658951U, is composed of at least n first cylinders and n-1 second cylinders spaced apart and nested together. The innermost and outermost cylinders of the homogenizer are both first cylinders. The outermost first cylinder has a closed top and an opening communicating with the outside, and an opening at the bottom communicating with the interior of the innermost first cylinder. The other first cylinders have open tops, and all first cylinders share the same bottom of the homogenizer. The second cylinders are spaced apart and nested outside their adjacent first cylinders, with the second cylinders closed at the top and open at the bottom, thereby forming a space in which each first cylinder and second cylinder in the homogenizer communicates with each other. The first cylinder and the second cylinder are fixed to each other by a connecting component. The disadvantage of this patent is that since there is no valve component inside, it is impossible to control the flow direction of the material, and its applicability is poor. If multiple valve components are to be installed inside, the driving structure of the valve components is difficult to arrange. Utility Model Content

[0004] The utility model is intended to overcome the problem in the prior art that it is difficult to arrange valve components and the driving structure of the valve components on the online reactor, which makes it difficult to control the flow direction of materials and has poor applicability. An online reactor is provided that can be used to control the flow direction of materials inside the online reactor and is convenient for arranging the driving structure of the one-way valve, thereby improving its applicability.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses an online reactor, comprising a plurality of tower plates arranged at intervals in the axial direction, and a plurality of one-way valve assemblies, wherein the one-way valve assemblies comprise a valve seat and a valve core, the valve seat being arranged on the tower plates, and the valve cores of the plurality of one-way valve assemblies being installed on the same valve stem.

[0007] In the present application, by axially spaced tower plates, multiple one-way valve assemblies can be set on the same axis, and then the valve cores of the multiple one-way valve assemblies are connected through valve stems, so that the opening and closing of all one-way valves can be controlled simultaneously through the same valve stem. In other words, only one drive structure is needed to control multiple one-way valves, which facilitates the arrangement of the drive structure.

[0008] Preferably, a valve seat mounting hole is provided on the tower plate, and the valve seat is welded at the valve seat mounting hole.

[0009] Preferably, a stepped hole is provided in the valve seat, and a stepped portion adapted to the stepped hole is provided on the valve core.

[0010] Preferably, a fixing seat is provided on the valve stem, and a spring is installed between the fixing seat and the valve core, so that the valve core can be pressed against the valve seat to form a seal through the spring.

[0011] Preferably, a bushing is installed between the valve core and the valve stem, so that the valve core and the valve stem can move relative to each other axially.

[0012] Preferably, the valve core is provided with a stroke hole, in which a stroke limiter is installed. The stroke limiter can limit the movement of the valve core to avoid excessive spring deformation causing elastic function failure.

[0013] Preferably, the travel hole is a waist-round hole, and the travel limiter is a hexagon socket screw.

[0014] Preferably, the end of the valve stem is connected to a one-way valve driving member.

[0015] Preferably, the one-way valve driving member includes an axially movable cylinder.

[0016] Preferably, the one-way valve actuator includes a float, and the valve core of the one-way valve assembly is located below the valve seat. The float controls the opening and closing of the one-way valve assembly based on whether the in-line reactor is full of material. This eliminates the need for electrical components and provides improved stability in high-pressure environments.

[0017] Therefore, the utility model has the following beneficial effects: (1) it can be used to control the flow direction of materials inside an online reactor, thereby improving its applicability; (2) a single drive structure is used to simultaneously control multiple one-way valves, which facilitates the arrangement of the drive structure; and (3) the one-way valve control has better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of Example 1 of the utility model installed in an online reactor.

[0019] Figure 2This is a structural schematic diagram of a one-way valve assembly according to the first embodiment of the present invention.

[0020] Figure 3 This is a structural schematic diagram of Example 2 of the present utility model installed in an online reactor.

[0021] Figure 4 This is a structural schematic diagram of a one-way valve assembly according to the second embodiment of the present invention.

[0022] In the figure: tower body 1 tower plate 2 valve seat 3 valve core 4 spring 5 waist round hole 6 moving cylinder 7 distance component 8 center riser 9 ring plate 10 float 11. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and specific implementations.

[0024] Example 1, as Figure 1-2 As shown, an online reactor is installed in a tower body 1, including several axially spaced tower trays 2 and several one-way valve assemblies. The several one-way valve assemblies correspond to the several tower trays 2 one-to-one, that is, each tower tray 2 is provided with a one-way valve assembly, the one-way valve assembly includes a valve seat 3 and a valve core 4, the valve seat 3 is provided on the tower tray 2, the valve cores 4 of the several one-way valve assemblies are installed on the same valve stem, and the valve stem is simultaneously equipped with several valve cores 4.

[0025] The tower tray 2 is provided with a mounting hole for the valve seat 3, which is located near the outer edge of the tower tray 2. The centers of the valve seat 3 mounting holes of all tower trays 2 are located on the same vertical axis, and the valve seat 3 is welded to the mounting hole of the valve seat 3. The thickness of the valve seat 3 is greater than the thickness of the tower tray 2. The upper side of the valve seat 3 is flush with the upper side of the tower tray 2, and the lower side of the valve seat 3 is exposed from the lower side of the tower tray 2. The outer side of the lower portion of the valve seat 3 is welded to the mounting hole of the valve seat 3.

[0026] A stepped hole is provided in the valve seat 3, and a stepped portion adapted to the stepped hole is provided on the valve core 4. The stepped portion includes an inclined platform extrusion surface, and a seal is formed between the inclined platform extrusion surface and the stepped hole, thereby completing the closing of the one-way valve.

[0027] The valve stem is provided with a plurality of fixed seats, and the plurality of fixed seats correspond to a plurality of valve cores 4 one-to-one, and a spring 5 is installed between the valve core 4 and the corresponding fixed seats. A bushing is installed between the valve core 4 and the valve stem, so that the valve core 4 can move up and down in the axial direction of the valve stem. When the one-way valve needs to be closed, the valve core 4 moves a certain distance toward the valve seat 3, and then the spring 5 is compressed, thereby ensuring the sealing between the valve core 4 and the valve seat 3. In actual use, due to insufficient axial position accuracy of the fixed seat on the valve stem, or due to insufficient axial position accuracy of the tower plate 2, the actual distance between the valve core 4 and the valve seat 3 may be different in different one-way valve assemblies. Through the action of the spring 5, the situation that the valve core 4 and the valve seat 3 in the one-way valve assembly may not be completely sealed due to the different distances between the valve core 4 and the valve seat 3 can be avoided.

[0028] The valve core 4 is provided with a travel hole, in which a travel limiter is installed. The limiter can limit the movement of the valve core 4, thereby preventing the spring 5 from deforming too much and causing the elastic function to fail. The travel hole is a waist-shaped hole 6, and the travel limiter is a hexagon socket screw.

[0029] The tower tray 2 is disc-shaped and is divided into a central liquid-lifting tower tray and an edge liquid-lifting tower tray. A central liquid-lifting tower tray is provided with a central liquid-lifting tube 9 in the middle, and a ring plate 10 is welded to the outer edge of the edge liquid-lifting tower tray. An edge liquid-lifting channel is formed between the ring plate 10 and the inner wall of the tower body 1. During the reaction process, due to the spaced installation of the two tower trays 2, the material does not simply move axially, but also moves radially between the two tower trays 2, thereby making the reaction more complete. When the reaction is completed, by opening the one-way valve, the material can flow back downward through the valve seat 3 under the action of gravity. The one-way valve assembly enables the material to switch between the two flow trajectories.

[0030] The valve stem extends through the tower body 1 to the exterior of the tower body 1. One end of the valve stem located outside the tower body 1 is connected to a one-way valve driver. In this embodiment, the one-way valve driver includes an axially movable cylinder 7. Controlled by the cylinder, the valve stem can be moved up and down, thereby driving the valve core 4 toward or away from the valve seat 3, thereby achieving control of the one-way valve assembly. In this embodiment, in the one-way valve assembly, the valve core 4 is located above the valve seat 3. When the cylinder controls the valve stem to move downward, the valve core 4 approaches the valve seat 3, thereby closing the one-way valve. When the cylinder controls the valve stem to move upward, the valve core 4 moves away from the valve seat 3, thereby opening the one-way valve.

[0031] A vertical distance component 8 is also provided in the tower body 1, and the bottom of the distance component 8 is fixedly connected to the tower body 1. The distance component 8 is composed of a number of distance screws connected head to tail, and the distance screw includes a screw body, the upper end of the screw body is provided with an internal threaded hole, and the lower end of the distance screw is provided with an external threaded rod that matches the internal threaded hole. The tower plate 2 is provided with a collar mounting hole, and a distance collar is welded and installed at the collar mounting hole. The outer diameter of the external threaded rod is smaller than the inner diameter of the distance collar. The external threaded rod passes through the distance collar, and the screw body is supported by the distance collar. When two adjacent distance screws are rotated relative to each other, the distance between the two adjacent tower plates 2 can be adjusted.

[0032] On each tray 2, the collar mounting hole and the valve seat 3 mounting hole are centrally symmetrically arranged. Through this structure, two adjacent trays 2 can be supported by the fixed-distance screw, thereby making the entire tray 2 structure more stable.

[0033] During operation, the check valve assembly is closed by pressing down on the valve stem of the inline reactor, closing the three-way valve in the pipeline between the bottom of the inline reactor's lower head and the pre-polycondensation reactor. The three-way valve in the pipeline between the bottom of the inline reactor's lower head and the oligomer gear pump is opened. The oligomer gear pump delivers the esterified product into the inline reactor. A portion of the stabilized EG and catalyst are injected into the esterified product pipeline via an additive injection nozzle located before the inline reactor. The stabilized EG is heated by a conductive element inside the inline reactor jacket, vaporizing and forming small bubbles. During operation, the inline reactor is filled with the esterified product, which stirs and mixes the product and continues the esterification reaction with the residual PTA. Other additives required for the product are injected into the esterified product pipeline via an additive injection nozzle located after the inline reactor. The mixed materials then enter the pre-polycondensation reactor for the polycondensation reaction. When the device is shut down, after the oligomer gear pump stops, the valve stem of the in-line reactor is lifted to open the one-way valve assembly, closing the three-way valve in the pipeline between the bottom of the in-line reactor's lower head and the oligomer gear pump. The three-way valve in the pipeline between the bottom of the in-line reactor and the pre-polycondensation reactor is then opened. The esterified material in the in-line reactor flows downward through the open one-way valve assembly under the action of gravity and is delivered to the pre-polycondensation reactor by the gear pump located at the bottom of the in-line reactor's lower head.

[0034] Example 2, as Figure 3As shown, an online reactor is installed in a tower body 1, including several axially spaced tower trays 2 and several one-way valve assemblies. The several one-way valve assemblies correspond to the several tower trays 2 one-to-one, that is, each tower tray 2 is provided with a one-way valve assembly, the one-way valve assembly includes a valve seat 3 and a valve core 4, the valve seat 3 is provided on the tower tray 2, the valve cores 4 of the several one-way valve assemblies are installed on the same valve stem, and the valve stem is simultaneously equipped with several valve cores 4.

[0035] The tower tray 2 is provided with a mounting hole for the valve seat 3, which is located near the outer edge of the tower tray 2. The centers of the valve seat 3 mounting holes of all tower trays 2 are located on the same vertical axis, and the valve seat 3 is welded to the mounting hole of the valve seat 3. The thickness of the valve seat 3 is greater than the thickness of the tower tray 2. The upper side of the valve seat 3 is flush with the upper side of the tower tray 2, and the lower side of the valve seat 3 is exposed from the lower side of the tower tray 2. The outer side of the lower portion of the valve seat 3 is welded to the mounting hole of the valve seat 3.

[0036] A stepped hole is provided in the valve seat 3, and a stepped portion adapted to the stepped hole is provided on the valve core 4. The stepped portion includes an inclined platform extrusion surface, and a seal is formed between the inclined platform extrusion surface and the stepped hole, thereby completing the closing of the one-way valve.

[0037] The valve stem is provided with a plurality of fixed seats, and the plurality of fixed seats correspond to a plurality of valve cores 4 one-to-one, and a spring 5 is installed between the valve core 4 and the corresponding fixed seats. A bushing is installed between the valve core 4 and the valve stem, so that the valve core 4 can move up and down in the axial direction of the valve stem. When the one-way valve needs to be closed, the valve core 4 moves a certain distance toward the valve seat 3, and then the spring 5 is compressed, thereby ensuring the sealing between the valve core 4 and the valve seat 3. In actual use, due to insufficient axial position accuracy of the fixed seat on the valve stem, or due to insufficient axial position accuracy of the tower plate 2, the actual distance between the valve core 4 and the valve seat 3 may be different in different one-way valve assemblies. Through the action of the spring 5, the situation that the valve core 4 and the valve seat 3 in the one-way valve assembly may not be completely sealed due to the different distances between the valve core 4 and the valve seat 3 can be avoided.

[0038] The valve core 4 is provided with a travel hole, in which a travel limiter is installed. The limiter can limit the movement of the valve core 4, thereby preventing the spring 5 from deforming too much and causing the elastic function to fail. The travel hole is a waist-shaped hole 6, and the travel limiter is a hexagon socket screw.

[0039] The tower tray 2 is disc-shaped and is divided into a central liquid-lifting tower tray and an edge liquid-lifting tower tray. A central liquid-lifting tower tray is provided with a central liquid-lifting tube 9 in the middle, and a ring plate 10 is welded to the outer edge of the edge liquid-lifting tower tray. An edge liquid-lifting channel is formed between the ring plate 10 and the inner wall of the tower body 1. During the reaction process, due to the spaced installation of the two tower trays 2, the material does not simply move axially, but also moves radially between the two tower trays 2, thereby making the reaction more complete. When the reaction is completed, by opening the one-way valve, the material can flow back downward through the valve seat 3 under the action of gravity. The one-way valve assembly enables the material to switch between the two flow trajectories.

[0040] The upper end of the valve stem is located within the tower body 1, and a one-way valve actuator is provided at the end of the valve stem. This embodiment differs from the first embodiment in that the one-way valve actuator includes a float 11. When the tower body 1 is filled with esterified material, the float 11 is subjected to the upward buoyancy of the material, driving the one-way valve assembly upward, closing the one-way valve assembly. When a cavity forms at the top of the tower body 1, the float 11 is no longer subjected to the buoyancy and, under the action of gravity, moves downward together with the one-way valve assembly, opening the one-way valve assembly.

[0041] In this embodiment, the relative position and orientation of the one-way valve assembly and the tower tray 2 are opposite to those in the first embodiment. In this embodiment, the valve core 4 is located below the valve seat 3. When the float 11 controls the valve stem to move downward, the valve core 4 moves away from the valve seat 3, thereby opening the one-way valve. When the cylinder controls the valve stem to move upward, the valve core 4 moves closer to the valve seat 3, thereby closing the one-way valve.

[0042] A vertical distance component 8 is also provided in the tower body 1, and the bottom of the distance component 8 is fixedly connected to the tower body 1. The distance component 8 is composed of a number of distance screws connected head to tail, and the distance screw includes a screw body, the upper end of the screw body is provided with an internal threaded hole, and the lower end of the distance screw is provided with an external threaded rod that matches the internal threaded hole. The tower plate 2 is provided with a collar mounting hole, and a distance collar is welded and installed at the collar mounting hole. The outer diameter of the external threaded rod is smaller than the inner diameter of the distance collar. The external threaded rod passes through the distance collar, and the screw body is supported by the distance collar. When two adjacent distance screws are rotated relative to each other, the distance between the two adjacent tower plates 2 can be adjusted.

[0043] On each tray 2, the collar mounting hole and the valve seat 3 mounting hole are centrally symmetrically arranged. Through this structure, two adjacent trays 2 can be supported by the fixed-distance screw, thereby making the entire tray 2 structure more stable.

Claims

1. An online reactor, characterized in that: It comprises a plurality of axially spaced tower plates and a plurality of one-way valve assemblies. The one-way valve assemblies comprise a valve seat and a valve core. The valve seat is arranged on the tower plates, and the valve cores of the plurality of one-way valve assemblies are installed on the same valve stem.

2. An online reactor according to claim 1, characterized in that: A valve seat mounting hole is provided on the tower plate, and the valve seat is welded at the valve seat mounting hole.

3. An online reactor according to claim 2, characterized in that: A stepped hole is provided in the valve seat, and a stepped portion adapted to the stepped hole is provided on the valve core.

4. An online reactor according to claim 1, characterized in that: A fixing seat is provided on the valve stem, and a spring is installed between the fixing seat and the valve core.

5. An online reactor according to claim 4, characterized in that: A bushing is installed between the valve core and the valve stem.

6. An online reactor according to claim 4, characterized in that: The valve core is provided with a stroke hole, and a stroke limiter is installed in the stroke hole.

7. An online reactor according to claim 6, characterized in that: The travel hole is a waist-round hole, and the travel limiter is a hexagon socket screw.

8. An online reactor according to any one of claims 1 to 7, characterized in that: The end of the valve stem is connected with a one-way valve driving component.

9. An online reactor according to claim 8, characterized in that: The one-way valve driving member includes an axially moving cylinder.

10. An online reactor according to claim 8, characterized in that: The one-way valve driving component includes a floating ball, and the valve core in the one-way valve assembly is located below the valve seat.

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