Vinyl silicone oil low-molecule recycling device

Abstract

The utility model provides a vinyl silicone oil low-molecule recycling device. The vinyl silicone oil low-molecule recycling device comprises a vinyl silicone oil polymerization kettle, a condenser, a low-molecule tank, an automatic nitrogen charging unit, a low-molecule circulating pump, a vinyl detector and a mass flow meter, wherein a top outlet of the vinyl silicone oil polymerization kettle is communicated with an inlet of the condenser, an outlet of the condenser is communicated with a top inlet of the low-molecule tank, a bottom outlet of the low-molecule tank is communicated with an inlet of the low-molecule circulating pump, and an outlet of the low-molecule circulating pump is communicated with an inlet of the vinyl detector; an outlet of the vinyl detector is communicated with a side line reflux inlet of the low-molecular tank, a lower outlet of the low-molecular tank is communicated with an inlet of the mass flow meter, and an outlet of the mass flow meter is communicated with a top inlet of the vinyl silicone oil polymerization kettle; the automatic nitrogen charging unit is communicated with the low molecular tank; according to the vinyl silicone oil low-molecule recycling device, automatic control over low-molecule pressing is achieved, the control accuracy is improved, and the operation labor intensity is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field, and in particular relates to a vinyl silicone oil low-molecular recycling device. Background Art

[0002] Vinyl silicone fluids primarily include vinyl-terminated polydimethylsiloxane (Vi-PDMS) and vinyl-terminated polymethylvinylsiloxane (Vi-PMVS). Products with varying viscosities and vinyl contents are available upon request. Vinyl silicone fluids can be categorized as vinyl-terminated and high-vinyl silicone fluids. They are the primary raw material for addition-type liquid silicone rubber and silicone gels, as well as modifiers, plastic additives, and reinforcements for rubber compounds.

[0003] In the production process of vinyl silicone oil products, especially vinyl-terminated silicone oil products, low-molecular-weight recycling is required to control raw material consumption. However, recycling low-molecular-weight recycling often causes the vinyl content in the vinyl silicone oil products to be unable to be stably controlled.

[0004] Therefore, it is necessary to design a device that can accurately control the reuse of low molecular weight products. Utility Model Content

[0005] The utility model provides a vinyl silicone oil low-molecular recycling device, which is used to solve the problem in the prior art that the recycling of low-molecular materials cannot be accurately controlled during the production of ethylene silicone oil products.

[0006] The utility model provides a vinyl silicone oil low-molecular recycling device, comprising a vinyl silicone oil polymerization kettle, a condenser, a low-molecular tank, an automatic nitrogen filling unit, a low-molecular circulation pump, a vinyl detector, and a mass flow meter; wherein the top outlet of the vinyl silicone oil polymerization kettle is communicated with the inlet of the condenser, the outlet of the condenser is communicated with the top inlet of the low-molecular tank, the bottom outlet of the low-molecular tank is communicated with the inlet of the low-molecular circulation pump, the outlet of the low-molecular circulation pump is communicated with the inlet of the vinyl detector, the outlet of the vinyl detector is communicated with the side line reflux port of the low-molecular tank, the lower outlet of the low-molecular tank is communicated with the inlet of the mass flow meter, and the outlet of the mass flow meter is communicated with the top inlet of the vinyl silicone oil polymerization kettle; and the automatic nitrogen filling unit is communicated with the low-molecular tank.

[0007] Compared with the prior art, the utility model has the advantages that: the low-molecular-weight circulation pump and the vinyl detector are used in combination, which can not only accurately detect the vinyl content, but also make the low-molecular-weight materials mix evenly. At the same time, the mass flow meter is used for accurate measurement to ensure that the vinyl silicone oil with stable vinyl content is produced when the low-molecular-weight materials are reused. At the same time, the low-molecular-weight tank is connected to the automatic nitrogen filling unit, which realizes the automatic control of the low-molecular-weight material pressing, improves the control accuracy, and reduces the operating labor intensity.

[0008] Furthermore, the automatic nitrogen charging unit includes a vent regulating valve, a remote pressure gauge, a nitrogen regulating valve and a DCS automatic control system; the vent regulating valve, the remote pressure gauge and the nitrogen regulating valve are respectively connected to the top of the vinyl silicone oil polymerization kettle; the vent regulating valve, the remote pressure gauge, the safety valve and the nitrogen regulating valve are respectively connected to the DCS automatic control system by telecommunication.

[0009] Furthermore, the automatic nitrogen filling unit also includes an on-site pressure gauge and a safety valve, and the safety valve and the on-site pressure gauge are respectively connected to the top of the vinyl silicone oil polymerization kettle.

[0010] Furthermore, the low molecular weight circulation pump is an internal gear pump.

[0011] Furthermore, the vinyl detector is an infrared spectrum online detector.

[0012] Furthermore, the mass flowmeter is a Coriolis mass flowmeter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a low-molecular-weight vinyl silicone oil recycling device according to an embodiment of the present invention.

[0014] Explanation of the accompanying symbols: 1. Vinyl silicone oil polymerization kettle; 2. Condenser; 3. Low molecular tank; 41. Vent regulating valve; 42. On-site pressure gauge; 43. Safety valve; 44. Nitrogen regulating valve; 45. Remote pressure gauge; 5. Low molecular circulation pump; 6. Vinyl detector; 7. Mass flow meter. DETAILED DESCRIPTION

[0015] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0016] See also Figure 1 The utility model provides a vinyl silicone oil low molecular recycling device, comprising a vinyl silicone oil polymerization kettle 1, a condenser 2, a low molecular tank 3, an automatic nitrogen filling unit, a low molecular circulation pump 5, a vinyl detector 6, and a mass flow meter 7;

[0017] Among them, the top outlet of the vinyl silicone oil polymerization kettle 1 is connected to the inlet of the condenser 2, the outlet of the condenser 2 is connected to the top inlet of the low molecular tank 3, the bottom outlet of the low molecular tank 3 is connected to the inlet of the low molecular circulation pump 5, the outlet of the low molecular circulation pump 5 is connected to the inlet of the vinyl detector 6, the outlet of the vinyl detector 6 is connected to the side line reflux port of the low molecular tank 3, the lower outlet of the low molecular tank 3 is connected to the inlet of the mass flowmeter 7, and the outlet of the mass flowmeter 7 is connected to the top inlet of the vinyl silicone oil polymerization kettle 1; the automatic nitrogen filling unit is connected to the low molecular tank 3.

[0018] Specifically, the vinyl silicone oil polymerization kettle 1 is used to produce vinyl silicone oil products, wherein the low molecular weight substances therein go up and leave through the top outlet of the vinyl silicone oil polymerization kettle 1, enter the condenser 2 through the inlet of the condenser 2 for condensation, leave through the outlet of the condenser 2, and are sent to the low molecular weight tank 3 for storage through the top inlet of the low molecular weight tank 3; part of the low molecular weight substances enter the low molecular weight circulation pump 5 through the bottom outlet of the low molecular weight tank 3, and are then sent to the vinyl detector 6 by the low molecular weight circulation pump 5 to detect the vinyl content therein, and then return to the low molecular weight tank 3 through the side line reflux port of the low molecular weight tank 3, so that the low molecular weight substances in the low molecular weight tank 3 are mixed, and vinyl silicone oil with stable vinyl content can be output; the low molecular weight materials with uniform mixing and stable content leave the low molecular weight tank 3 through the lower outlet of the low molecular weight tank 3, and are sent to the vinyl silicone oil polymerization kettle 1 after detection by the mass flowmeter 7, thereby completing the reuse of the low molecular weight substances; at the same time, the low molecular weight tank 3 is also connected to the automatic nitrogen filling unit to maintain a stable pressure in the low molecular weight tank 3.

[0019] The low-molecular-weight vinyl silicone oil recycling device provided by the utility model adopts a low-molecular-weight circulation pump 5 and a vinyl detector 6 in combination, which can not only accurately detect the vinyl content, but also uniformly mix the low-molecular-weight materials. At the same time, a mass flow meter 7 is used for accurate measurement to ensure that the vinyl silicone oil with a stable vinyl content is produced under the condition of low-molecular-weight recycling. At the same time, the low-molecular-weight tank 3 is connected to an automatic nitrogen filling unit, which realizes automatic control of low-molecular-weight material pressing, improves control accuracy, and reduces operating labor intensity.

[0020] In a specific embodiment, the automatic nitrogen charging unit includes a venting regulating valve 41, a remote pressure gauge 45, a nitrogen regulating valve 44 and a DCS automatic control system; the venting regulating valve 41, the remote pressure gauge 45 and the nitrogen regulating valve 44 are respectively connected to the top of the vinyl silicone oil polymerization kettle 1; the venting regulating valve 41, the remote pressure gauge 45 and the nitrogen regulating valve 44 are respectively connected to the DCS automatic control system by telecommunication.

[0021] The automatic nitrogen filling unit can realize real-time monitoring and adjustment of the pressure in the low molecular tank 3. The DCS automatic control system is used for centralized control, and the remote pressure gauge 45, nitrogen regulating valve 44 and vent regulating valve 41 are controlled in a linked manner, which further improves the safety of the device and reduces the labor intensity of operation.

[0022] In a specific embodiment, the automatic nitrogen filling unit also includes an on-site pressure gauge 42 and a safety valve 43, and the safety valve 43 and the on-site pressure gauge 42 are respectively connected to the top of the vinyl silicone oil polymerization kettle 1; when the on-site pressure gauge 42 detects that the pressure of the low molecular tank 3 reaches a preset safety value, the safety valve 43 automatically opens to release the pressure, further improving the safety of the device and reducing the labor intensity of operation.

[0023] In one embodiment, the low-molecular-weight circulation pump 5 is an internal gear pump, which can further uniformly mix the low-molecular-weight vinyl silicone oil while ensuring stable operation of the device. The vinyl detector 6 is an infrared spectrometer online detector, which can further stabilize the operation of the device and provide more accurate detection data.

[0024] In a specific embodiment, the mass flowmeter 7 is a Coriolis mass flowmeter 7; it can be understood that a feed valve is provided at the top inlet of the vinyl silicone oil polymerization kettle 1, and the mass flowmeter 7 is linked to the feed valve for control to achieve accurate recycling of low-molecular vinyl silicone oil.

[0025] The low-molecular-weight vinyl silicone oil recycling device provided by the utility model uses an automatic nitrogen filling unit to realize automatic control of low-molecular-weight material pressing, improve control accuracy, and reduce operating labor intensity; a low-molecular-weight circulation pump 5 and a vinyl detector 6 are used in combination to accurately detect the vinyl content online and uniformly mix the low-molecular-weight materials; at the same time, a mass flow meter 7 is used for accurate measurement to ensure that vinyl silicone oil with a stable vinyl content is produced when the low-molecular-weight materials are recycled.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A vinyl silicone oil low molecular weight recycling device, characterized in that: It includes a vinyl silicone oil polymerization kettle (1), a condenser (2), a low molecular tank (3), an automatic nitrogen filling unit, a low molecular circulation pump (5), a vinyl detector (6), and a mass flow meter (7); The top outlet of the vinyl silicone oil polymerization kettle (1) is connected to the inlet of the condenser (2), the outlet of the condenser (2) is connected to the top inlet of the low molecular tank (3), the bottom outlet of the low molecular tank (3) is connected to the inlet of the low molecular circulation pump (5), the outlet of the low molecular circulation pump (5) is connected to the inlet of the vinyl detector (6), the outlet of the vinyl detector (6) is connected to the side line reflux port of the low molecular tank (3), the lower outlet of the low molecular tank (3) is connected to the inlet of the mass flow meter (7), and the outlet of the mass flow meter (7) is connected to the top inlet of the vinyl silicone oil polymerization kettle (1); and the automatic nitrogen filling unit is connected to the low molecular tank (3).

2. The vinyl silicone oil low molecular weight recycling device according to claim 1, characterized in that: The automatic nitrogen charging unit includes a venting regulating valve (41), a remote pressure gauge (45), a nitrogen regulating valve (44) and a DCS automatic control system; The venting regulating valve (41), the remote pressure gauge (45) and the nitrogen regulating valve (44) are respectively connected to the top of the vinyl silicone oil polymerization kettle (1), and the venting regulating valve (41), the remote pressure gauge (45), the safety valve (43) and the nitrogen regulating valve (44) are respectively connected to the DCS automatic control system by telecommunication.

3. The vinyl silicone oil low molecular weight recycling device according to claim 2, characterized in that: The automatic nitrogen charging unit further comprises an on-site pressure gauge (42) and a safety valve (43), and the safety valve (43) and the on-site pressure gauge (42) are respectively connected to the top of the vinyl silicone oil polymerization kettle (1).

4. The vinyl silicone oil low molecular weight recycling device according to any one of claims 1 to 3, characterized in that: The low molecular weight circulation pump (5) is an internal gear pump.

5. The vinyl silicone oil low molecular weight recycling device according to any one of claims 1 to 3, characterized in that: The vinyl detector (6) is an infrared spectrometer online detector.

6. The vinyl silicone oil low molecular weight recycling device according to any one of claims 1 to 3, characterized in that: The mass flow meter (7) is a Coriolis mass flow meter.

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