Polypropylene tail gas recovery device

Abstract

The utility model relates to the technical field of material recovery, in particular to a polypropylene tail gas recovery device which comprises a reaction kettle, a recovery layer and a filter assembly, the filter assembly comprises a gas inlet pipe, a connecting rod, a limiting piece, a filter screen and a fixing column, the filter assembly is connected to the reaction kettle through the gas inlet pipe, and polypropylene tail gas to be recovered is conveyed into the reaction kettle; in the conveying process, filtering is conducted through a filter screen, the filter screen slides in an air inlet pipe, the filter screen slides to a connecting rod to be limited, the filter screen is clamped in the air inlet pipe through the connecting rod and a limiting piece, then a fixing column is rotated, and the fixing column rotates in the air inlet pipe; the polypropylene tail gas recycling device is simple in structure and convenient to use, the filter screen filters particles of conveyed polypropylene tail gas, the filter screen can be easily taken out by unscrewing the fixing column, the filtered polypropylene tail gas is conveyed into the recycling layer of the reaction kettle to be recycled, and the recycling efficiency is effectively improved by filtering the polypropylene tail gas.

Description

Technical Field

[0001] The utility model relates to the technical field of material recovery, in particular to a polypropylene tail gas recovery device. Background Art

[0002] Polypropylene is a polymer formed by the addition polymerization of propylene. It is a white waxy material, transparent and light in appearance. The chemical formula is (C3H6)n, with a density of 0.89 - 0.91 g / cm3, flammable, a melting point of 165 °C, softening at about 155 °C, and a service temperature range of -30 - 140 °C. It can resist the corrosion of acid, alkali, salt solutions and a variety of organic solvents below 80 °C and can decompose under high temperature and oxidation. Polypropylene is widely used in the production of fiber products such as clothing and blankets, medical devices, automobiles, bicycles, parts, conveying pipelines, chemical containers, etc., and is also used for food and drug packaging. Most of them do not have a tail gas recovery device, making it difficult to purify and recycle the tail gas. The untreated waste gas is directly discharged into the air, which not only easily causes secondary pollution of the air but also easily leads to waste of energy.

[0003] Currently, the prior art (CN202186956U) discloses a polypropylene tail gas recovery device, which mainly consists of a reaction furnace at the bottom, a suction fan above the reaction furnace, a recovery layer above the suction fan, a ventilation fan above the recovery layer, and an air outlet above the ventilation fan. A polypropylene tail gas recovery device recovers a large amount of reaction raw materials through the recovery of tail gas, saves costs, avoids waste, and prevents a large amount of tail gas from being discharged into the air, thus protecting the environment.

[0004] However, in the above solution, the recovered raw materials are not filtered during the recovery of polypropylene tail gas, and the polypropylene tail gas carrying some impurities will affect the recovery efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a polypropylene tail gas recovery device, aiming to solve the problem that in the existing polypropylene tail gas recovery device, the raw materials are not filtered during the recovery of polypropylene tail gas, resulting in a part of the particles carried by the gas affecting the recovery efficiency.

[0006] To achieve the above object, the present utility model provides a polypropylene tail gas recovery device, which includes a reaction kettle, a recovery layer, an air exchanger, an exhaust fan, and a filtering component. The recovery layer is fixedly connected to the reaction kettle and is located on one side of the reaction kettle. The air exchanger is fixedly connected to the reaction kettle and is located on one side of the reaction kettle. The air exchanger is fixedly connected to the reaction kettle and is located on one side of the reaction kettle. The filtering component includes an air inlet pipe, a connecting rod, a limiting member, a filter net, and a fixing column. The air inlet pipe is fixedly connected to and communicates with the reaction kettle and is located on one side of the reaction kettle. The connecting rod is fixedly connected to the air inlet pipe and is located on one side of the air inlet pipe. The limiting member is fixedly connected to the connecting rod and is located on one side of the connecting rod. The filter net is slidably connected to the air inlet pipe and is located on one side of the air inlet pipe. The fixing column is threadedly connected to the air inlet pipe and is located on one side of the air inlet pipe.

[0007] Wherein, the filtering component further includes a plurality of mounting seats and a rotating rod. The plurality of mounting seats are respectively fixedly connected to the filter net and are located on one side of the filter net. The rotating rod is rotatably connected to the mounting seat and is located on one side of the mounting seat.

[0008] Wherein, the filtering component further includes a rotating column and a connecting column. The rotating column is fixedly connected to the fixing column and is located on one side of the fixing column. The connecting column is fixedly connected to the rotating column and is located on one side of the rotating column.

[0009] Wherein, the filtering component further includes a sealing ring. The sealing ring is slidably connected to the air inlet pipe and is located on one side of the air inlet pipe.

[0010] Wherein, the polypropylene tail gas recovery device further includes an observation component, and the observation component is arranged on one side of the reaction kettle.

[0011] Wherein, the observation component includes a transparent observation window, a cylinder, a telescopic rod, and a scraper. The transparent observation window is fixedly connected to the reaction kettle and is located on one side of the reaction kettle. The cylinder is fixedly connected to the reaction kettle and is located on one side of the reaction kettle. The telescopic rod is fixedly connected to the output end of the cylinder and is located on one side of the cylinder. The scraper is fixedly connected to the telescopic rod and is located on one side of the telescopic rod.

[0012] The utility model relates to a polypropylene tail gas recovery device, which is connected to the reaction kettle through the air inlet pipe, and conveys the polypropylene tail gas to be recovered into the reaction kettle. During the conveying process, the gas is filtered through the filter screen. The filter screen slides in the air inlet pipe and is restricted at the connecting rod. The filter screen is clamped inside the air inlet pipe through the connecting rod and the limiting part. Then, the fixing column is rotated. The fixing column rotates in the air inlet pipe to block the upward sliding path of the filter screen. The filter screen is restricted inside the air inlet pipe through the restrictions at both ends to filter the particles of the conveyed polypropylene tail gas. At the same time, by loosening the fixing column, the filter screen can be easily slid upward and taken out. When working, the polypropylene tail gas is blown upward by the air exchanger and guided into the recovery layer, and the filtered polypropylene tail gas is conveyed into the recovery layer of the reaction kettle for recycling. Then, the recovered polypropylene tail gas is guided and discharged through the exhaust fan at the top. By filtering the polypropylene tail gas, the recycling efficiency is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0014] Figure 1 It is a schematic structural diagram of the whole of the first embodiment of the present utility model.

[0015] Figure 2 It is a top view of the whole of the first embodiment of the present utility model.

[0016] Figure 3 It is a cross-sectional view of the whole of the first embodiment of the present utility model.

[0017] Figure 4 It is a schematic structural diagram of the whole of the second embodiment of the present utility model.

[0018] Figure 5 It is a cross-sectional view of the whole of the second embodiment of the present utility model.

[0019] 101 - reaction kettle, 102 - recovery layer, 103 - filtering component, 104 - air inlet pipe, 105 - connecting rod, 106 - limiting part, 107 - filter screen, 108 - fixing column, 109 - mounting seat, 110 - rotating rod, 111 - rotating column, 112 - connecting column, 113 - sealing ring, 114 - air exchanger, 115 - exhaust fan, 201 - observation component, 202 - transparent observation window, 203 - cylinder, 204 - telescopic rod, 205 - scraper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The first embodiment of the present application is as follows:

[0021] Please refer to Figures 1 - 3 , wherein, Figure 1 is a schematic structural diagram of the whole of the first embodiment of the present utility model, Figure 2 is a top view of the whole of the first embodiment of the present utility model, Figure 3 is a cross-sectional view of the whole of the first embodiment of the present utility model.

[0022] The present utility model provides a polypropylene tail gas recovery device, which includes a reaction kettle 101, a recovery layer 102, an air change fan 114, an exhaust fan 115 and a filtering component 103. The filtering component 103 includes an air inlet pipe 104, a connecting rod 105, a limiting member 106, a filter net 107, a fixing column 108, a mounting seat 109, a rotating rod 110, a rotating column 111, a connecting column 112 and a sealing ring 113. Through the foregoing solution, the problem that the existing polypropylene tail gas recovery device does not filter the raw materials when recovering polypropylene tail gas, resulting in a part of the particles carried by the gas affecting the recovery efficiency, is solved.

[0023] For this specific embodiment, the recovery layer 102 is fixedly connected to the reaction kettle 101 and is located on one side of the reaction kettle 101. The polypropylene tail gas is conveyed into the reaction kettle 101, and the polypropylene tail gas after the first filtration of particles is blown towards the recovery layer 102 by the upward blowing of the air change fan 114. Then, the recovery layer 102 conducts recovery treatment on the polypropylene tail gas. After the recovery, the recovered polypropylene tail gas is discharged through the exhaust fan 114 at the top. The specific structures and usage methods of the reaction kettle 101, the recovery layer 102, the air change fan 114 and the exhaust fan 115 are recorded in the patent document with the publication number CN202186956U, which is not within the protection scope of the present application and will not be elaborated herein.

[0024] The air inlet pipe 104 is fixedly connected to and communicated with the reactor 101 and is located at one side of the reactor 101. The connecting rod 105 is fixedly connected to the air inlet pipe 104 and is located at one side of the air inlet pipe 104. The stopper 106 is fixedly connected to the connecting rod 105 and is located at one side of the connecting rod 105. The filter 107 is slidably connected to the air inlet pipe 104 and is located at one side of the air inlet pipe 104. The fixing column 108 is threadedly connected to the air inlet pipe 104 and is located at one side of the air inlet pipe 104. The air inlet pipe 104 is connected to the reactor 101 to transport the polypropylene tail gas to be recovered into the reactor 101. During the transportation process, the tail gas is filtered by the filter 107. The filter 107 is connected to the air inlet pipe 104. The filter 107 is now stuck in the air inlet pipe 104 through the connecting rod 105 and the limiting piece 106, and then the fixing column 108 is rotated. The fixing column 108 is rotated in the air inlet pipe 104 to limit the position of the filter 107 sliding up and down. The filter 107 is limited in the air inlet pipe 104 through the restrictions at both ends to filter the particles of the transported polypropylene tail gas, and the fixed column 108 can be easily slid upward and taken out by loosening the filter, and the filtered polypropylene tail gas is transported into the recovery layer 102 of the reactor 101 for recycling. The efficiency of recycling is effectively improved by filtering the polypropylene tail gas.

[0025] Secondly, the plurality of mounting seats 109 are respectively fixedly connected to the filter 107 and are located on one side of the filter 107. The rotating rod 110 is rotatably connected to the mounting seat 109 and is located on one side of the mounting seat. The mounting seat 109 is located at the edge of the filter 107. The two ends of the connecting rod 105 are respectively connected to the mounting seats 109 at different positions. The connecting rod 105 can rotate on the mounting seat 109. When installed in the air intake pipe 104, the connecting rod 105 rotates toward both ends and is restricted to the edge of the filter 107 by the restriction of the fixing column 108. When disassembly and replacement are required, the fixing column 108 is rotated to remove the fixing column 108, and then the rotating column 111 is rotated to stand at the center of the filter 107. The rotating column 111 increases the fulcrum to lift the filter 107 upward, which facilitates the removal of the filter 107 and makes the replacement process more convenient.

[0026] At the same time, the rotating column 111 is fixedly connected to the fixed column 108 and is located on one side of the fixed column 108. The connecting column 112 is fixedly connected to the rotating column 111 and is located on one side of the rotating column 111. One end of the air inlet pipe 104 is connected to the reactor 101, and the other end needs to be connected to the equipment for conveying polypropylene tail gas. The rotating column 111 is a smooth surface for rotating the handheld part, which is more convenient to increase the hand-held fulcrum during disassembly and installation. The connecting column 112 is a threaded surface for connecting to the equipment at the other end. The fixed column 108 at one end is threadedly connected into the air inlet pipe 104 and tightened to limit the upper and lower positions of the filter 107. The other end is threadedly tightened and fixed to the equipment for conveying polypropylene tail gas. The fixed column 108, the rotating column 111 and the connecting column 112 are hollow structures, which can ensure that the polypropylene tail gas can pass smoothly while being connected.

[0027] In addition, the sealing ring 113 is slidably connected to the air intake pipe 104 and is located on one side of the air intake pipe 104. The sealing ring 113 is located at the connection of the air intake pipe 104. The connection between the air intake pipe 104 and the conveying equipment is sealed through a sealing tube to ensure that the polypropylene tail gas will not leak during the conveying process. The sealing ring 113 is made of soft material. When disassembling and replacing the filter 107, one end of the conveying device can be directly rotated to loosen the threaded part, and then the sealing ring 113 can be slid downward to facilitate the disassembly and replacement of the filter 107.

[0028] When using the utility model, one end of the air inlet pipe 104 is connected to the reactor 101, the rotating rod 110 is held to push the filter 107 to slide in the air inlet pipe 104, and the filter 107 is slid to the connecting rod 105 for restriction, and then the rotating rod 110 is rotated to rotate it to the edge of the filter 107, and then the filter 107 is clamped in the air inlet pipe 104 through the connecting rod 105 and the limiting member 106, and then the rotating column 111 is held to rotate the fixing column 108, and the fixing column 108 is moved in the air inlet pipe 104. The filter 107 is rotated to limit the position of the filter 107 sliding up and down, and then the connecting column 112 at the other end is connected to the equipment for conveying polypropylene exhaust gas to be connected and tightened. The connecting column 112, the rotating column 111 and the fixed column 108 are hollow devices to ensure normal circulation. The filter 107 is restricted in the air inlet pipe 104 through the restrictions at both ends to filter the particles of the conveyed polypropylene exhaust gas, and the filtered polypropylene exhaust gas is conveyed into the recovery layer 102 of the reactor 101 for recycling. By first filtering the particles of the polypropylene exhaust gas, the recycling efficiency is effectively improved.

[0029] The second embodiment of this application is as follows:

[0030] Based on the first embodiment, please refer to Figures 4 - 5 , wherein, Figure 4 is a schematic structural diagram of the whole of the second embodiment of the present utility model, Figure 5 is a cross-sectional view of the whole of the second embodiment of the present utility model. A polypropylene tail gas recovery device provided by the present utility model further includes an observation assembly 201. The observation assembly 201 includes a transparent observation window 202, a cylinder 203, a telescopic rod 204 and a scraper 205.

[0031] For this specific embodiment, the transparent observation window 202 is fixedly connected to the reaction kettle 101 and is located on one side of the reaction kettle 101. The cylinder 203 is fixedly connected to the reaction kettle 101 and is located on one side of the reaction kettle 101. The telescopic rod 204 is fixedly connected to the output end of the cylinder 203 and is located on one side of the cylinder 203. The scraper 205 is fixedly connected to the telescopic rod 204 and is located on one side of the telescopic rod 204. Through the transparent observation window 202, the recovery effect of the recovery layer 102 can be clearly observed. At the same time, one end of the transparent observation window 202 can drive the telescopic rod 204 to expand and contract through the output end of the cylinder 203. The expansion and contraction of the telescopic rod can drive the scraper 205 to wipe and scrape the transparent observation window 202 at one end inside the reaction kettle 101 to ensure that the transparent observation window 202 is always clear.

[0032] When using the present utility model, one end of the air inlet pipe 104 is connected to the reaction kettle 101. Hold the rotating rod 110 and push the filter net 107 to slide in the air inlet pipe 104. Slide the filter net 107 to the connecting rod 105 for restriction. Then rotate the rotating rod 110 to rotate it to the edge of the filter net 107. Subsequently, connect the connecting rod 105 with the limiting member 106. Now, clamp the filter net 107 inside the air inlet pipe 104. Then hold the rotating column 111 and rotate the fixed column 108. The fixed column 108 rotates in the air inlet pipe 104 to limit the up-and-down sliding position of the filter net 107. Then connect the other end of the connecting column 112 to the equipment for transporting polypropylene tail gas and tighten it for fixation. The connecting column 112, the rotating column 111, and the fixed column 108 are hollow devices to ensure normal circulation. The filter net 107 is restricted in the air inlet pipe 104 through restrictions at both ends to filter particles of the transported polypropylene tail gas. The filtered polypropylene tail gas is transported into the recovery layer 102 of the reaction kettle 101 for recycling. During the recycling process, the output end of the cylinder 203 drives the telescopic rod 204 to move back and forth. The movement of the telescopic rod 204 drives the scraper 205 to wipe the transparent observation window 202. It is possible to observe the internal recycling situation through the transparent observation window 202 during the recycling process. In this process, by filtering the polypropylene tail gas for particles first, the recycling efficiency is effectively improved.

[0033] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A polypropylene tail gas recovery device, comprising a reactor, a recovery layer, an exhaust fan and a fan, wherein the recovery layer is fixedly connected to the reactor and is located on one side of the reactor, the fan is fixedly connected to the reactor and is located on one side of the reactor, and the fan is fixedly connected to the reactor and is located on one side of the reactor, wherein the fan is fixedly connected to the reactor and is located on one side of the reactor, and wherein the fan is fixedly connected to the reactor and is located on one side of the reactor, and wherein the fan is fixedly connected to the reactor and is located on one side of the reactor, Also included is a filtration component; The filter assembly includes an air inlet pipe, a connecting rod, a stopper, a filter screen and a fixing column; The air intake pipe is fixedly connected to and communicated with the reactor and is located on one side of the reactor. The connecting rod is fixedly connected to the air intake pipe and is located on one side of the air intake pipe. The limiting member is fixedly connected to the connecting rod and is located on one side of the connecting rod. The filter is slidably connected to the air intake pipe and is located on one side of the air intake pipe. The fixing column is threadedly connected to the air intake pipe and is located on one side of the air intake pipe.

2. A polypropylene tail gas recovery device as claimed in claim 1, characterized in that: The filter assembly also includes a plurality of mounting seats and a rotating rod. The plurality of mounting seats are respectively fixedly connected to the filter screen and are located on one side of the filter screen. The rotating rod is rotationally connected to the mounting seats and is located on one side of the mounting seats.

3. A polypropylene tail gas recovery device as claimed in claim 2, characterized in that: The filter assembly further comprises a rotating column and a connecting column, wherein the rotating column is fixedly connected to the fixed column and is located on one side of the fixed column, and the connecting column is fixedly connected to the rotating column and is located on one side of the rotating column.

4. A polypropylene tail gas recovery device as claimed in claim 3, characterized in that: The filter assembly also includes a sealing ring, which is slidably connected to the air intake pipe and is located on one side of the air intake pipe.

5. A polypropylene tail gas recovery device as claimed in claim 4, characterized in that: The polypropylene tail gas recovery device also includes an observation component, which is arranged on one side of the reactor.

6. A polypropylene tail gas recovery device as claimed in claim 5, characterized in that: The observation assembly includes a transparent observation window, a cylinder, a telescopic rod and a scraper. The transparent observation window is fixedly connected to the reactor and located on one side of the reactor. The cylinder is fixedly connected to the reactor and located on one side of the reactor. The telescopic rod is fixedly connected to the output end of the cylinder and located on one side of the cylinder. The scraper is fixedly connected to the telescopic rod and located on one side of the telescopic rod.

Images