Solvent recycling device in polyphenylene sulfide preparation

Abstract

The utility model relates to the technical field of polyphenylene sulfide preparation, in particular to a solvent recycling device in polyphenylene sulfide preparation, which comprises a recycling box and a split-flow type mixed precipitation component, the split-flow type mixed precipitation component comprises a partition plate, a transmission pipe, a sealing plate, a mixing cavity and a precipitation cavity, the partition plate is fixedly connected with the recycling box, and the transmission pipe is fixedly connected with the sealing plate. The conveying pipe is fixedly connected with the partition plate, the sealing plate penetrates through the recycling box to be in sliding connection with the conveying pipe, the mixing cavity is formed in the recycling box, the mixing cavity is formed above the partition plate, and the precipitation cavity is formed in the recycling box and below the partition plate. Therefore, the problems that the manual mixing efficiency is extremely low, the mixing quality cannot be compared with that of mechanical mixing, accurate layering cannot be performed after mixing, waste liquid is easily mixed into a solvent, and the subsequent production quality does not reach the standard are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of polyphenylene sulfide preparation technology, and in particular to a solvent recovery and reuse device in the preparation of polyphenylene sulfide. Background Technology

[0002] Polyphenylene sulfide (PPS) is resistant to high temperatures, solvents, acid and alkali corrosion, radiation, and flame, and possesses balanced mechanical and electrical properties. It is considered one of the key materials essential for the development of high technology. PPS porous membranes can trap suspended particles, dust, bacteria, and fungi from air and liquids, and have wide applications in reverse osmosis, dialysis, ultrafiltration, and gas separation. The material can be used for extended periods in acidic, alkaline, or organic solvent environments at high temperatures; therefore, PPS materials have broad applications in the field of membrane technology.

[0003] In the production of polyphenylene sulfide (PPS), a certain amount of reaction solvent is required for chemical reactions. After production, the solvent in the filter cake separated after the polycondensation reaction can be extracted by using filter cake wash water as an extractant. The resulting extract and the filtrate produced during the PPS production process form a mixture. Then, a treatment agent is added to the mixture to achieve solvent recovery and reuse, thereby saving costs. However, the mixture of the mixture and the treatment agent is currently mixed manually, which is extremely inefficient and the mixing quality cannot be compared with mechanical mixing. Furthermore, the stratification after mixing cannot be accurately separated, and waste liquid is easily mixed into the solvent, resulting in substandard subsequent production quality.

[0004] To address the aforementioned issues, we propose a solvent recovery and reuse device for the preparation of polyphenylene sulfide. Utility Model Content

[0005] The purpose of this invention is to provide a solvent recovery and reuse device in the preparation of polyphenylene sulfide, which solves the problems of extremely low efficiency of manual mixing, incomparable mixing quality to mechanical mixing, inaccurate stratification after mixing, easy mixing of waste liquid into solvent, and subsequent substandard production quality.

[0006] To achieve the above objectives, this utility model employs a solvent recovery and reuse device in the preparation of polyphenylene sulfide, comprising a recovery tank and a diversion-type mixing and precipitation assembly. The diversion-type mixing and precipitation assembly includes a partition plate, a transfer pipe, a sealing plate, a mixing chamber, and a precipitation chamber. The partition plate is fixedly connected to the recovery tank and located at the center of the recovery tank, and is perpendicular to the recovery tank. The transfer pipe is fixedly connected to the partition plate and located at the center of the partition plate, and is perpendicular to the partition plate. The sealing plate passes through the recovery tank and is slidably connected to the transfer pipe, and is located inside the transfer pipe, and is disposed inside the partition plate. The mixing chamber is disposed inside the recovery tank and above the partition plate. The precipitation chamber is disposed inside the recovery tank and below the partition plate.

[0007] The diversion-type mixing sedimentation assembly further includes a top cover and an inlet pipe. The top cover is detachably connected to the recycling tank and is located above the recycling tank. The inlet pipe is fixedly connected to the top cover and is located on one side above the top cover.

[0008] The diversion-type mixing and sedimentation assembly further includes a stirring rod and a mixing rod. The stirring rod is rotatably connected to the top cover and located below the top cover. The stirring rod is disposed inside the mixing chamber and above the partition plate. The mixing rod is fixedly connected to the stirring rod and located on the outer surface of the stirring rod.

[0009] The diversion-type mixing sedimentation assembly further includes a discharge pipe, which is fixedly connected to the recovery box and located on one side of the recovery box. The discharge pipe is disposed on the outer side of the recovery box near the sedimentation chamber.

[0010] The diversion type mixing sedimentation assembly further includes a diversion valve and a diversion pipe. The diversion valve is fixedly connected to the discharge pipe and is located on the side of the discharge pipe away from the recovery box. The diversion pipe is detachably connected to the diversion valve and is located at the end of the diversion valve away from the discharge pipe.

[0011] This invention relates to a solvent recovery and reuse device in the preparation of polyphenylene sulfide (PPS), comprising a recovery tank and a diversion-type mixing and sedimentation assembly. The diversion-type mixing and sedimentation assembly includes a separator plate, a transfer pipe, a sealing plate, a mixing chamber, and a sedimentation chamber. The separator plate is fixedly connected to the recovery tank and located at the center of the recovery tank, and is perpendicular to the recovery tank. The transfer pipe is fixedly connected to the separator plate and located at the center of the separator plate, and is perpendicular to the separator plate. The sealing plate passes through the recovery tank and is slidably connected to the transfer pipe, and is located inside the transfer pipe, and is disposed inside the separator plate. The mixing chamber is disposed inside the recovery tank and above the separator plate. The sedimentation chamber is disposed inside the recovery tank and below the separator plate. By adding the diversion-type mixing and sedimentation assembly, the problems of extremely low efficiency of manual mixing, incomparable mixing quality to mechanical mixing, inaccurate stratification after mixing, and easy mixing of waste liquid into the solvent, leading to substandard subsequent production quality, are effectively solved. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a top view of the entire utility model.

[0015] Figure 3 This is a utility model Figure 2 A cross-sectional view of the AA line structure.

[0016] 101-Recovery box, 102-Top cover, 103-Stirring rod, 104-Mixing rod, 105-Divider plate, 106-Mixing chamber, 107-Sedimentation chamber, 108-Infeed pipe, 109-Outfeed pipe, 110-Diverter valve, 111-Diverter pipe, 112-Transfer pipe, 113-Sealing plate. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] Please see Figures 1-3 , Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a top view of the entire utility model. Figure 3 This is a utility model Figure 2 A cross-sectional view of the AA line structure.

[0019] This invention provides a solvent recovery and reuse device for the preparation of polyphenylene sulfide (PPS), comprising a recovery tank 101 and a diversion-type mixing and sedimentation assembly. The diversion-type mixing and sedimentation assembly includes a separator 105, a transfer pipe 112, a sealing plate 113, a mixing chamber 106, a sedimentation chamber 107, a top cover 102, an inlet pipe 108, a stirring rod 103, a mixing rod 104, an outlet pipe 109, a diversion valve 110, and a diversion pipe 111. This solution addresses the extremely low efficiency of manual mixing, the incomparable mixing quality compared to mechanical mixing, and the lack of stratification after mixing. The method of precise stratification can easily lead to the mixing of waste liquid into the solvent, resulting in substandard quality in subsequent production. Understandably, the aforementioned solution, during the preparation of polyphenylene sulfide and the recovery of the solvent, involves transferring the mixture and treatment agent through the feed pipe 108 into the mixing chamber 106 of the recovery tank 101. Then, a worker places a power source, such as a drive motor, above the top cover 102. The output of the drive motor passes through the top cover 102 and provides necessary power to the stirring rod 103 and the mixing rod 104. The stirring rod 103 then... The mixing rod 104 replaces manual labor in mixing the liquid and the treatment agent. After mixing, the handle on the end of the sealing plate 113 away from the recycling tank 101 is pulled to release the seal on the transfer pipe 112. The mixed liquid and treatment agent then enter the sedimentation chamber 107 for stratified sedimentation. During sedimentation, the upper mixing chamber 106 can be refilled with the mixed liquid and treatment agent for mixing, thus saving mixing time. After sedimentation is complete, the waste below the sedimentation is discharged through the discharge pipe 109. The waste agent is discharged. Since the waste agent and the solvent have a significant color difference after precipitation, when the solvent with a different color than the waste liquid flows out of the diversion pipe 111, the staff will adjust the diversion valve 110 to change the flow direction of the diversion pipe 111. This will complete the recycling and reuse of the solvent, greatly improving the recycling efficiency. It effectively solves the problems of extremely low efficiency of manual mixing, the inability of the mixing quality to be compared with mechanical mixing, the inability to accurately separate the layers after mixing, and the easy mixing of waste liquid into the solvent, resulting in substandard subsequent production quality.

[0020] In this specific embodiment, the partition plate 105 is fixedly connected to the recycling bin 101 and located at the inner center of the recycling bin 101, and the partition plate 105 is perpendicular to the recycling bin 101. The transmission pipe 112 is fixedly connected to the partition plate 105 and located at the inner center of the partition plate 105, and the transmission pipe 112 is perpendicular to the partition plate 105. The sealing plate 113 passes through the recycling bin 101 and is slidably connected to the transmission pipe 112, and is located inside the transmission pipe 112, and the sealing plate 113 is disposed inside the partition plate 105. The mixing chamber 106 is disposed inside the recycling bin 101, and the mixing chamber 106 is disposed inside the partition plate 105. Above 05, the sedimentation chamber 107 is located inside the recovery tank 101 and below the partition plate 105. During the preparation of polyphenylene sulfide and the recovery of solvent, the mixture and treatment agent are transferred into the mixing chamber 106 in the recovery tank 101 through the feed pipe 108. After mixing, the handle on the end of the sealing plate 113 away from the recovery tank 101 is pulled to release the seal of the transfer pipe 112. The mixed mixture and treatment agent then enter the sedimentation chamber 107 for stratified sedimentation. During sedimentation, the upper mixing chamber 106 can be refilled with the mixture and treatment agent for mixing, thereby saving mixing time.

[0021] The top cover 102 is detachably connected to the recycling bin 101 and is located above the recycling bin 101. The feed pipe 108 is fixedly connected to the top cover 102 and is located on one side above the top cover 102.

[0022] Secondly, the stirring rod 103 is rotatably connected to the top cover 102 and located below the top cover 102. The stirring rod 103 is disposed inside the mixing chamber 106 and above the partition plate 105. The mixing rod 104 is fixedly connected to the stirring rod 103 and located on the outer surface of the stirring rod 103. The operator places a power source such as a drive motor above the top cover 102. The output end of the drive motor passes through the top cover 102 and provides necessary power to the stirring rod 103 and the mixing rod 104. The stirring rod 103 and the mixing rod 104 then replace manual labor to mix the liquid and the treatment agent.

[0023] Meanwhile, the discharge pipe 109 is fixedly connected to the recycling box 101 and is located on one side of the recycling box 101. The discharge pipe 109 is located on the outer side of the recycling box 101 near the sedimentation chamber 107. After sedimentation is completed, the waste agent below the sedimentation will be discharged using the discharge pipe 109.

[0024] In addition, the diversion valve 110 is fixedly connected to the discharge pipe 109 and is located on the side of the discharge pipe 109 away from the recovery box 101. The diversion pipe 111 is detachably connected to the diversion valve 110 and is located at the end of the diversion valve 110 away from the discharge pipe 109. Since the waste agent and the solvent have obvious color differences after precipitation, when the solvent with a different color from the waste liquid flows out of the diversion pipe 111, the staff will adjust the diversion valve 110 to change the flow direction of the diversion pipe 111, thereby completing the recycling and reuse of the solvent and greatly improving the recycling efficiency.

[0025] When using this invention in the preparation of polyphenylene sulfide, during solvent recovery, the mixture and treatment agent are transferred through the feed pipe 108 into the mixing chamber 106 of the recovery tank 101. Then, a worker places a power source, such as a drive motor, above the top cover 102. The output of the drive motor passes through the top cover 102 to provide necessary power to the stirring rod 103 and the mixing rod 104. The stirring rod 103 and the mixing rod 104 then replace manual labor to mix the mixture and treatment agent. After mixing, the handle on the end of the sealing plate 113 away from the recovery tank 101 is pulled to release the seal on the transfer pipe 112. The thus mixed mixture and treatment agent then enter the sedimentation chamber 107. During the sedimentation process, the mixing chamber 106 above can be refilled with the mixing liquid and treatment agent, thus saving mixing time. After sedimentation is complete, the waste agent below the sedimentation is discharged through the discharge pipe 109. Since the waste agent and solvent have a significant color difference after sedimentation, when the solvent with a different color from the waste liquid flows out of the diversion pipe 111, the operator will adjust the diversion valve 110 to change the flow direction of the diversion pipe 111, thereby completing the recycling and reuse of the solvent, greatly improving the recycling efficiency. This effectively solves the problems of extremely low efficiency of manual mixing, the inability of the mixing quality to be compared with mechanical mixing, and the inability to accurately separate the layers after mixing, which easily mixes the waste liquid into the solvent, resulting in substandard subsequent production quality.

[0026] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A solvent recovery and reuse device for the preparation of polyphenylene sulfide, comprising a recovery tank, characterized in that, It also includes a diversion-type mixing and settling assembly, which includes a partition plate, a transfer pipe, a sealing plate, a mixing chamber, and a settling chamber. The partition plate is fixedly connected to the recycling tank and located at the center inside the recycling tank, and the partition plate is perpendicular to the recycling tank. The transfer pipe is fixedly connected to the partition plate and located at the center inside the partition plate, and the transfer pipe is perpendicular to the partition plate. The sealing plate passes through the recycling tank and is slidably connected to the transfer pipe, and is located inside the transfer pipe, and the sealing plate is disposed inside the partition plate. The mixing chamber is disposed inside the recycling tank and above the partition plate. The settling chamber is disposed inside the recycling tank and below the partition plate.

2. The solvent recovery and reuse device in the preparation of polyphenylene sulfide as described in claim 1, characterized in that, The diversion-type mixing sedimentation assembly also includes a top cover and an inlet pipe. The top cover is detachably connected to the recycling tank and is located above the recycling tank. The inlet pipe is fixedly connected to the top cover and is located on one side above the top cover.

3. The solvent recovery and reuse device in the preparation of polyphenylene sulfide as described in claim 2, characterized in that, The diversion-type mixing and sedimentation assembly further includes a stirring rod and a mixing rod. The stirring rod is rotatably connected to the top cover and located below the top cover. The stirring rod is disposed inside the mixing chamber and above the partition plate. The mixing rod is fixedly connected to the stirring rod and located on the outer surface of the stirring rod.

4. The solvent recovery and reuse device in the preparation of polyphenylene sulfide as described in claim 3, characterized in that, The diversion-type mixing sedimentation assembly also includes a discharge pipe, which is fixedly connected to the recovery box and located on one side of the recovery box, and the discharge pipe is arranged on the outer side of the recovery box near the sedimentation chamber.

5. The solvent recovery and reuse device in the preparation of polyphenylene sulfide as described in claim 4, characterized in that, The diversion type mixing sedimentation assembly also includes a diversion valve and a diversion pipe. The diversion valve is fixedly connected to the discharge pipe and is located on the side of the discharge pipe away from the recovery box. The diversion pipe is detachably connected to the diversion valve and is located at the end of the diversion valve away from the discharge pipe.

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