Device for preparing clean high-grade fluororubber

Abstract

The utility model discloses a device for preparing clean high-grade fluororubber, which is characterized in that an output port of a raw material container (8) is connected with an input port I (9) of a polymerization reaction kettle (2) through a compressor (1), and an output port of an auxiliary material container (11) is communicated with an input port II (10) of the polymerization reaction kettle (2); an output port at the bottom of the polymerization reaction kettle (2) is communicated with an input port III (12) at the upper part of the coagulation reaction kettle (3), an output port of the coagulant preparation barrel (4) is communicated with an input port IV (14) at the upper part of the coagulation reaction kettle (3) through a coagulant pump (13), and a stirrer (17) is vertically arranged in the coagulant preparation barrel (4); and an output port at the bottom of the condensation reaction kettle (3) is connected with a fluororubber finished product storage tank (15) through a cleaning device (5), a filtering device (6) and a drying device (7) in sequence. According to the utility model, the product performance of fluororubber is improved, and the environment can be effectively protected during preparation.

Description

Technical Field

[0001] This utility model relates to the field of fluororubber preparation technology, and in particular to an apparatus for preparing clean, high-grade fluororubber. Background Technology

[0002] Fluororubber, due to its excellent chemical resistance, high-temperature resistance, and oil resistance, is widely used in aerospace, automotive manufacturing, and petrochemical industries. In the fluororubber manufacturing process, the coagulant has a significant impact on the product's performance. Currently, fluororubber is prepared by reacting all raw materials with the coagulant together. This process easily leads to coagulation during the reaction, causing contamination of the raw materials and resulting in a high level of impurities in the final fluororubber, thus affecting its performance. Therefore, multiple washings are required throughout the manufacturing process. This not only increases the number of washings, the workload, and the production cost, but also leads to an increase in wastewater, causing serious environmental impact. Utility Model Content

[0003] This invention provides an apparatus for preparing clean, high-grade fluororubber, which not only improves the performance of fluororubber products but also reduces production costs and effectively protects the environment during the preparation process.

[0004] This utility model adopts the following technical solution: an apparatus for preparing clean, high-grade fluororubber, comprising a compressor, a polymerization reactor, a coagulation reactor, a coagulant preparation cylinder, a cleaning device, a filtering device, and a drying device. The output port of the raw material container is connected to the input port I of the polymerization reactor through the compressor. An input port II is also provided at the upper part of the polymerization reactor. The output port of the auxiliary material container is connected to the input port II. The output port at the bottom of the polymerization reactor is connected to the input port III at the top of the coagulation reactor. The output port of the coagulant preparation cylinder is connected to the input port IV at the top of the coagulation reactor through a coagulant pump. A stirrer is vertically installed inside the coagulant preparation cylinder. The output port at the bottom of the coagulation reactor is connected to the fluororubber finished product storage tank in sequence through the cleaning device, the filtering device, and the drying device.

[0005] Furthermore, the top of the condensation reactor is equipped with a wastewater discharge port.

[0006] Furthermore, the cleaning device is configured as an ultrasonic cleaner.

[0007] Furthermore, the filtration device is configured as a particle filter screen.

[0008] Furthermore, the drying device is configured as a vacuum drying oven.

[0009] Furthermore, the coagulant pump mentioned above is a liquid metering pump.

[0010] This invention offers the following advantages: By adopting the above technical solution, the fluororubber latex and coagulant are prepared separately, followed by a coagulation reaction. The coagulant used is aluminum sulfate, which avoids interference with other reactions during the fluororubber preparation process, optimizing the preparation process. Furthermore, subsequent washing, filtration, and drying yield high-quality fluororubber, improving its product performance and reducing impurities. Moreover, the method and apparatus produce fluororubber particles, resulting in a cleaner reaction and reducing the number of washing cycles, thus lowering wastewater discharge and effectively protecting the environment. The coagulant preparation cylinder of this invention is vertically equipped with a stirrer, ensuring a finer coagulant and a more complete coagulation reaction, further improving the quality of the prepared fluororubber. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0013] The preferred embodiments of this utility model will be described in detail below so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of this utility model.

[0014] exist Figure 1This invention provides an apparatus for preparing clean, high-grade fluororubber, comprising a compressor 1, a polymerization reactor 2, a coagulation reactor 3, a coagulant preparation cylinder 4, a cleaning device 5, a filtering device 6, and a drying device 7. The output port of the raw material container 8 is connected to the input port I9 of the polymerization reactor 2 via the compressor 1. An input port II10 is also provided at the upper part of the polymerization reactor 2. The output port of the auxiliary material container 11 is connected to the input port II10. The output port at the bottom of the polymerization reactor 2 is connected to the input port III12 at the upper part of the coagulation reactor 3. The output port of the coagulant preparation cylinder 4 is connected to... The coagulant pump 13 is connected to the input port IV14 at the top of the coagulation reactor 3. A stirrer 17 is vertically installed inside the coagulant preparation cylinder 4. The output port at the bottom of the coagulation reactor 3 is connected to the fluororubber finished product storage tank 15 via a cleaning device 5, a filtering device 6, and a drying device 7. In this embodiment, the top of the coagulation reactor 3 is provided with a sewage discharge port 16. In this embodiment, the cleaning device 5 is an ultrasonic cleaner, the filtering device 6 is a particle filter screen, and the drying device 7 is a vacuum drying oven. In this embodiment, the coagulant pump 13 is a liquid metering pump.

[0015] The method of using this utility model is as follows: First, the vinylidene fluoride gas and hexafluoropropylene gas in the raw material container 8 are input into the compressor 1 for compression and then discharged into the polymerization reactor 2. At the same time, the initiator in the auxiliary material container 11 is also discharged into the polymerization reactor 2. The initiator is an organic peroxide. The vinylidene fluoride gas and hexafluoropropylene gas react with the initiator in the polymerization reactor 2 to generate fluororubber latex. Then, the coagulant is placed in the coagulant preparation container 4 and stirred by the stirrer 17. The coagulant is aluminum sulfate with a concentration of 5% to 25%. The aluminum sulfate is input into the coagulation reactor 3 through the coagulant pump 13 to react with the fluororubber latex. The pH value during the coagulation reaction is 3-8, and the temperature during the coagulation reaction is 20℃-70℃. After the coagulation reaction, granular fluororubber is obtained as a primary product. Wastewater generated during the coagulation reaction is discharged from wastewater outlet 16. Finally, the granular fluororubber is placed in an ultrasonic cleaner to clean the reaction residue on the surface. Then, the cleaned granular fluororubber is screened through a particle filter screen to remove substandard particles. Finally, the screened granular fluororubber is sent to a vacuum drying oven for dehydration and drying to obtain high-grade granular fluororubber. The obtained high-grade granular fluororubber is stored in the fluororubber finished product storage tank 15.

[0016] However, this is not the only possibility. Any variations or substitutions conceived without inventive effort should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope defined in the claims.

Claims

1. An apparatus for producing clean high grade fluoroelastomer, characterized by It includes a compressor (1), a polymerization reactor (2), a coagulation reactor (3), a coagulant preparation cylinder (4), a cleaning device (5), a filtering device (6), and a drying device (7). The output port of the raw material container (8) is connected to the input port I (9) of the polymerization reactor (2) through the compressor (1). An input port II (10) is also provided at the top of the polymerization reactor (2). The output port of the auxiliary material container (11) is connected to the input port II (10). The output port at the bottom of the polymerization reactor (2) is connected to the input port III (12) at the top of the coagulation reactor (3). The output port of the coagulant preparation cylinder (4) is connected to the input port IV (14) at the top of the coagulation reactor (3) through the coagulant pump (13). A stirrer (17) is vertically installed in the coagulant preparation cylinder (4). The output port at the bottom of the coagulation reactor (3) is connected to the fluororubber finished product storage tank (15) in sequence through the cleaning device (5), the filtering device (6), and the drying device (7).

2. The apparatus for producing clean high grade fluoroelastomer according to claim 1, characterized by The top of the coagulation reactor (3) is provided with a sewage discharge port (16).

3. The apparatus for producing clean high grade fluoroelastomer according to claim 1, wherein The cleaning device (5) is configured as an ultrasonic cleaner.

4. The apparatus for producing clean high grade fluoroelastomer according to claim 1, wherein The filter device (6) is configured as a particle filter screen.

5. The apparatus for producing clean high grade fluoroelastomer according to claim 1, wherein The drying device (7) is configured as a vacuum drying oven.

6. The apparatus for producing clean high grade fluoroelastomer according to claim 1, wherein The coagulant pump (13) is a liquid metering pump.

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