A vinyl chloride recovery and refining apparatus

Abstract

The utility model discloses a kind of vinyl chloride recovery refining device, belong to vinyl chloride recovery technical field, including multiple frames being fixedly connected between two described connecting plates symmetrically, and two described connecting plates are vertically arranged in cylinder, multiple inclined flow guide plates A are symmetrically arranged between two described connecting plates, and inclined flow guide plate B is arranged between two adjacent flow guide plates A, the lower surface of flow guide plate A is fixedly connected between two frames on the lower side, the upper surface of flow guide plate B is fixedly connected between two described frames on the upper side, and hydrophobic filter membrane is coated on the connecting plate;The utility model can effectively reduce the probability of ice layer in condenser.

Description

Technical Field

[0001] This utility model belongs to the field of vinyl chloride recovery technology, and in particular relates to a vinyl chloride recovery and refining device. Background Technology

[0002] Vinyl chloride is an important chemical raw material, mainly used in the production of polyvinyl chloride (PVC) and other plastic products. Its recycling technology mainly targets the waste gas, waste liquid and waste PVC products in the production process, aiming to achieve resource recycling and reduce environmental pollution. Distillation is a common recycling method. During the process of condensing the tail gas containing vinyl chloride from the distillation unit to the condenser, the presence of water vapor in the tail gas can easily form an ice layer inside the condenser. The presence of the ice layer will seriously affect the condensation efficiency and tail gas treatment capacity of the condenser. A structure that can reduce the water vapor content in the tail gas is proposed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a vinyl chloride recovery and refining device, which solves the aforementioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vinyl chloride recovery and refining device, comprising a connecting plate, multiple frames symmetrically and fixedly connected between two connecting plates, and the two connecting plates vertically arranged inside a cylinder, multiple inclined guide plates A symmetrically arranged between the two connecting plates, and an inclined guide plate B arranged between two adjacent guide plates A, the lower surface of the guide plate A being fixedly connected between two lower frames, the upper surface of the guide plate B being fixedly connected between two upper frames, and a hydrophobic filter membrane covering the connecting plate.

[0005] Beneficial effects This utility model provides a vinyl chloride recovery and refining device, which has the following advantages compared with the prior art: 1. When the exhaust gas containing water vapor is discharged into the connecting plate, the hydrophobic filter membrane is fitted onto the connecting plate. Therefore, the exhaust gas flows in the relatively sealed space formed by the hydrophobic filter membrane and the connecting plate. During the flow, it comes into contact with multiple guide plates A and B in sequence. When it comes into contact with guide plate A, the exhaust gas flows upward under the action of the inclined surface of guide plate A, and then comes into contact with the hydrophobic filter membrane. That is, at this time, the exhaust gas impacts the hydrophobic filter membrane. Since the water vapor in the exhaust gas cannot pass through the hydrophobic filter membrane, the vinyl chloride in the exhaust gas passes through the hydrophobic filter membrane and is discharged into the cylinder. Then, the remaining exhaust gas in the hydrophobic filter membrane continues to flow until it comes into contact with guide plate B, and flows downward under the action of the inclined surface of guide plate B until it comes into contact with the hydrophobic filter membrane. Thus, after the exhaust gas passes through multiple guide plates A and B in sequence, it undergoes multiple changes of direction, which allows the exhaust gas to fully contact the hydrophobic filter membrane, thereby effectively separating the water vapor in the exhaust gas. Attached Figure Description

[0006] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0007] Figure 2 This is an enlarged cross-sectional view of the present invention.

[0008] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0009] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0010] Figure reference numerals: cylinder 101, connecting plate 201, frame 202, guide plate A 203, guide plate B 204, hydrophobic filter membrane 205, inlet pipe 206, outlet pipe 207, cover plate 208, U-shaped frame 209, bolt 301, turntable 302, nut 303, exhaust pipe 304, condenser 305, slot 306. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0012] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0013] Please see Figures 1-4 This invention provides an embodiment of a vinyl chloride recovery and refining device, comprising a connecting plate 201, a plurality of frames 202 symmetrically fixedly connected between two connecting plates 201, and the two connecting plates 201 being vertically arranged inside a cylinder 101. A plurality of inclined guide plates A203 are symmetrically arranged between two connecting plates 201, and an inclined guide plate B204 is arranged between two adjacent guide plates A203. The lower surface of the guide plate A203 is fixedly connected between two lower frames 202, and the upper surface of the guide plate B204 is fixedly connected between two upper frames 202. A hydrophobic filter membrane 205 is covered on the connecting plate 201.

[0014] In the above embodiment, when the exhaust gas containing water vapor is discharged into the connecting plate 201, since the hydrophobic filter membrane 205 is sleeved on the connecting plate 201, the exhaust gas flows in the relatively sealed space formed by the hydrophobic filter membrane 205 and the connecting plate 201. During the flow, it comes into contact with multiple guide plates A203 and guide plates B204 in sequence. When it comes into contact with guide plate A203, the exhaust gas flows upward under the action of the inclined surface of guide plate A203, thereby coming into contact with the hydrophobic filter membrane 205. That is, at this time, the exhaust gas impacts the hydrophobic filter membrane 205. Since the water vapor in the exhaust gas cannot pass through the hydrophobic filter membrane 205, the vinyl chloride in the exhaust gas passes through the hydrophobic filter membrane 205 and is discharged into the cylinder 101. Subsequently, the remaining exhaust gas in the hydrophobic filter membrane 205 continues to flow until it contacts the guide plate B204, and flows downward under the action of the inclined surface of the guide plate B204 until it contacts the hydrophobic filter membrane 205. Thus, after the exhaust gas passes through multiple guide plates A203 and guide plate B204 in sequence, it undergoes multiple changes of direction, which enables the exhaust gas to fully contact the hydrophobic filter membrane 205, thereby effectively separating the water vapor in the exhaust gas.

[0015] Specifically, the lower end and both sides of the guide plate A203 are in close contact with the hydrophobic filter membrane 205, and the upper end of the guide plate A203 is 3-4 cm away from the hydrophobic filter membrane 205. The upper end and both sides of the guide plate B204 are in close contact with the hydrophobic filter membrane 205, and the lower end of the guide plate B204 is 3-4 cm away from the hydrophobic filter membrane 205.

[0016] In the above embodiment, since the guide plate A203 has a gap between its upper end and the hydrophobic filter membrane 205, and the guide plate B204 has a gap between its lower end and the hydrophobic filter membrane 205, the exhaust gas can be effectively slid along its inclined surface to contact the hydrophobic filter membrane 205, thus preventing the exhaust gas from being directly discharged into the outlet pipe 207 without contacting the hydrophobic filter membrane 205.

[0017] Specifically, the connecting plate 201 is provided with a sealing assembly to prevent vinyl chloride gas leakage. The sealing assembly includes an inlet pipe 206 and an outlet pipe 207. The ends of the inlet pipe 206 and the outlet pipe 207 that are close to each other are fixedly connected to the two connecting plates 201, and the other ends of the inlet pipe 206 and the outlet pipe 207 are located outside the cylinder 101. The inlet pipe 206 is used to connect to a vinyl chloride distillation device, and the vinyl chloride distillation device can be selected from various models such as BYLX-2204.

[0018] Regarding the above examples, those skilled in the art should understand that the implementation of the above technical solutions is not limited to the specific outlet pipe 207 described in the above embodiments. For example, the outlet pipe 207 is equipped with a G500X-16 type pressure relief valve to prevent excessive pressure inside the sealed space formed by the connecting plate 201 and the hydrophobic filter membrane 205. Specifically, an exhaust pipe 304 is fixedly connected to the cylinder 101, and the other end of the exhaust pipe 304 is fixedly connected to the condenser 305.

[0019] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific condenser 305 described in the above embodiments. For example, the condenser can be LN-20 / 25 / 50 / 75.

[0020] In the above embodiment, the exhaust pipe of the vinyl chloride distillation device is inserted into the inlet pipe 206 and tightly connected by wrapping it with tape. At this time, the exhaust gas is continuously input into the inlet pipe 206 under high pressure by the vinyl chloride distillation device, thereby starting to separate the water vapor in the exhaust gas as it passes through multiple guide plates A203 and guide plate B204 in sequence. At the same time, the water vapor can be discharged through the outlet pipe 207. Since the vinyl chloride in the exhaust gas is introduced into the condenser 305 through the exhaust pipe 304, it is further condensed.

[0021] Specifically, both ends of the cylinder 101 are threaded with cover plates 208, and the cover plates 208 are provided with slots 306 that pass through both sides at the axial center. The inlet pipe 206 and the outlet pipe 207 are respectively inserted into their corresponding slots 306, and the inner wall of the slots 306 is provided with sealing rubber rings.

[0022] In the above embodiment, when it is necessary to clean the hydrophobic filter membrane 205, the user can rotate and remove the two cover plates 208 from both ends of the cylinder 101. Then, the two cover plates 208 can be removed from the inlet pipe 206 and the outlet pipe 207. At this time, the hydrophobic filter membrane 205 is exposed to the operator's field of vision. Then, the user can clean the hydrophobic filter membrane 205 according to the cleaning specifications.

[0023] Specifically, the connecting plate 201 is also provided with a connecting component to prevent water vapor leakage. The connecting component includes a U-shaped frame 209 and a positioning component. The two ends of the hydrophobic filter membrane 205 are respectively fixedly connected to the corresponding U-shaped frame 209. The U-shaped frame 209 is slidably connected to the connecting plate 201, and the inner wall of the U-shaped frame 209 is tightly attached to the outer wall of the connecting plate 201, thereby preventing water vapor from seeping out from the gap at its connection point and mixing with vinyl chloride. The positioning component is used to prevent wrinkles from forming on the hydrophobic filter membrane 205.

[0024] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific loop frame 209 described in the above embodiments. For example, the inner wall of the loop frame 209 is provided with a sealing strip. The purpose of this setting is to facilitate the increase of the tightness of the connection between the loop frame 209 and the connecting plate 201.

[0025] Specifically, the positioning component includes a bolt 301, which is horizontally disposed on the side of the U-shaped frame 209. The bolt 301 passes through a through hole in the U-shaped frame 209, and the diameter of the through hole is larger than the diameter of the outer wall of the bolt 301. The bolt 301 is threadedly connected to a nut 303, and the nut 303 is fixedly connected to the side of the connecting plate 201.

[0026] Specifically, a turntable 302 is fixedly connected to the end of the bolt 301 away from the nut 303, and the turntable 302 is attached to the U-shaped frame 209 and rotatably connected to the U-shaped frame 209.

[0027] In the above embodiment, before separating the exhaust gas, the user should inspect the inside of the cylinder 101 by rotating the turntable 302, which causes the turntable 302 to drive the bolt 301 fixedly connected to it to rotate. At this time, the bolt 301 begins to gradually pass through the side of the nut 303 with the cooperation of the nut 303 with its threaded connection, thereby shortening the distance between the U-shaped frame 209 and the connecting plate 201. At this time, the U-shaped frame 209 begins to pull the hydrophobic filter membrane 205 fixedly connected to it. Thus, with the other end of the hydrophobic filter membrane 205 fixed, the two U-shaped frames 209 can cooperate to straighten and tighten the hydrophobic filter membrane 205, avoiding wrinkles on its surface. This would prevent the guide plate A203 and the guide plate B204 from being tightly connected to the guide plate B204, thus affecting the separation of water vapor in the exhaust gas.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] The term "fixed connection" as used in this application refers to a connection in which parts or components are fixed without any relative movement. This includes both detachable and non-detachable connections.

[0030] (1) Detachable connection: Components are fixed together using screws, splines, wedges, etc. This type of connection allows for disassembly during maintenance without damaging the parts. However, the specifications of the connectors used must be correct. (Such as the length of bolts, keys, and wedges), and tighten them properly.

[0031] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxy-acetylene cutting for repair or replacement, these parts generally cannot be reused. Furthermore, during connection, [the following should be noted]: Pay attention to process quality, technical testing, and remedial measures (such as correction, polishing, etc.).

[0032] The sliding connection referred to in this application means that the component can slide along a linear trajectory, and the hinge referred to in this application means that the component can rotate along an axial constraint.

[0033] In some cases, the sliding connection and hinge referred to in this application may also be damped, enabling the component to maintain in the desired position.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vinyl chloride recovery and refining apparatus, characterized in that, It includes two connecting plates (201), and multiple frames (202) are symmetrically fixedly connected between the two connecting plates (201). The two connecting plates (201) are vertically arranged inside the cylinder (101). Multiple inclined guide plates A (203) are symmetrically arranged between the two connecting plates (201), and an inclined guide plate B (204) is arranged between two adjacent guide plates A (203). The lower surface of the guide plate A (203) is fixedly connected between the two lower frames (202), and the upper surface of the guide plate B (204) is fixedly connected between the two upper frames (202). The connecting plate (201) is covered with a hydrophobic filter membrane (205).

2. The vinyl chloride recovery and refining apparatus according to claim 1, characterized in that, The lower end and both sides of the flow guide plate A (203) are in close contact with the hydrophobic filter membrane (205), and the upper end of the flow guide plate A (203) is 3-4 cm away from the hydrophobic filter membrane (205). The upper end and both sides of the flow guide plate B (204) are in close contact with the hydrophobic filter membrane (205), and the lower end of the flow guide plate B (204) is 3-4 cm away from the hydrophobic filter membrane (205).

3. The vinyl chloride recovery and refining apparatus according to claim 1, characterized in that, The connecting plate (201) is provided with a sealing assembly for preventing the leakage of vinyl chloride gas. The sealing assembly includes an inlet pipe (206) and an outlet pipe (207). The ends of the inlet pipe (206) and the outlet pipe (207) that are close to each other are fixedly connected to the two connecting plates (201), and the other ends of the inlet pipe (206) and the outlet pipe (207) are located outside the cylinder (101).

4. The vinyl chloride recovery and refining apparatus according to claim 3, characterized in that, Both ends of the cylinder (101) are threaded with cover plates (208), and the cover plates (208) are provided with slots (306) that pass through both sides at the axis of the cover plates (208). The inlet pipe (206) and the outlet pipe (207) are respectively inserted into their corresponding slots (306), and the inner wall of the slots (306) is provided with sealing rings.

5. The vinyl chloride recovery and refining apparatus according to claim 1, characterized in that, The connecting plate (201) is also provided with a connecting component to prevent water vapor leakage. The connecting component includes a U-shaped frame (209) and a positioning component. The two ends of the hydrophobic filter membrane (205) are respectively fixedly connected to the corresponding U-shaped frame (209). The U-shaped frame (209) is slidably connected to the connecting plate (201), and the inner wall of the U-shaped frame (209) is tightly attached to the outer wall of the connecting plate (201). The positioning component is used to prevent wrinkles from forming on the hydrophobic filter membrane (205).

6. The vinyl chloride recovery and refining apparatus according to claim 5, characterized in that, The positioning component includes a bolt (301), which is horizontally positioned on the side of the spiral frame (209). The bolt (301) passes through a through hole on the spiral frame (209), and the diameter of the through hole is larger than the diameter of the outer wall of the bolt (301). The bolt (301) is threadedly connected to a nut (303), and the nut (303) is fixedly connected to the side of the connecting plate (201).

7. The vinyl chloride recovery and refining apparatus according to claim 6, characterized in that, The bolt (301) is fixedly connected to a turntable (302) at the end away from the nut (303), and the turntable (302) is attached to the spiral frame (209) and rotatably connected to the spiral frame (209).

8. The vinyl chloride recovery and refining apparatus according to claim 1, characterized in that, An exhaust pipe (304) is fixedly connected to the cylinder (101), and the other end of the exhaust pipe (304) is fixedly connected to the condenser (305).

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