Vacuum treatment system for polymerization reaction by-products

Abstract

The utility model relates to a polymerization reaction byproduct vacuum treatment system which comprises a reaction kettle, the reaction kettle is communicated with a condensing device through a first pipeline, the condensing device is communicated with a first buffer tank through a second pipeline, a filtering structure is arranged at the top of the first buffer tank, and the bottom of the filtering structure extends into the first buffer tank. The top of the first buffer tank communicates with a vacuum pump through a third pipeline; a first valve is arranged at the bottom of the first buffer tank; according to the system, the first buffer tank is arranged to serve as a first filter insurance, the filter structure is arranged to serve as a second filter insurance, and the filter structure and the first buffer tank are matched to block by-products from the condensing device out of the vacuum pump and collect the by-products to the first buffer tank; then, the collected by-products are released from the first valve and subjected to next-step treatment; the structure is simple, and by-products can be prevented from entering the vacuum pump to damage the vacuum pump.

Description

Technical Field

[0001] This utility model relates to the field of chemical by-product treatment, and in particular to a vacuum treatment system for polymerization reaction by-products. Background Technology

[0002] Currently, the polymer polyester polymerization stage uses ultimate vacuum to remove byproducts such as alcohols and oligomers generated during polymerization. These byproducts are first collected after multi-stage condensation before being discharged, preventing them from entering the vacuum pump and causing damage. However, during use, it has been found that some products generate large amounts of byproducts. After condensation, although they become liquid and solid, they are not collected by the condenser but instead enter the subsequent vacuum pump as mist, causing vacuum abnormalities. Utility Model Content

[0003] To overcome the above problems, this utility model provides a vacuum treatment system for polymerization reaction byproducts. The technical solution adopted by this utility model to solve its technical problems is as follows:

[0004] A vacuum treatment system for polymerization reaction byproducts includes a reactor, which is connected to a condensation device via a first pipe. The condensation device is connected to a first buffer tank via a second pipe. A filter structure is installed at the top of the first buffer tank, with its bottom extending into the first buffer tank. A vacuum pump is connected to the top of the first buffer tank via a third pipe, and a first valve is installed at the bottom of the first buffer tank.

[0005] Furthermore, the top of the first buffer tank is connected to the third pipe flange, and the filter structure is detachably mounted on the top of the first buffer tank via the flange.

[0006] Furthermore, the filter structure includes an outer cylinder and an inner cylinder. The outer cylinder is provided with an air inlet, the inner cylinder is a mesh cylinder, and the space between the inner and outer cylinders is filled with filter material.

[0007] Furthermore, the air intake is located in the lower half of the outer cylinder.

[0008] Furthermore, the first valve is connected to the second buffer tank via the fourth pipe, the second valve is installed at the bottom of the second buffer tank and is connected to the waste liquid treatment device, and the top of the second buffer tank is connected to the waste gas treatment device.

[0009] Furthermore, a third valve is installed on the first pipeline, and an air inlet valve is installed on the third pipeline. The air inlet valve is connected to the air inlet device to blow air into the first buffer tank.

[0010] The beneficial effects of this utility model are as follows:

[0011] This system includes a reaction vessel, which is connected to a condensation device via a first pipe. The condensation device is connected to a first buffer tank via a second pipe. A filter structure is installed at the top of the first buffer tank, with its bottom extending into the first buffer tank. The top of the first buffer tank is connected to a vacuum pump via a third pipe, and a first valve is installed at the bottom of the first buffer tank. This system uses the first buffer tank as a first-level filter and the filter structure as a second-level filter. The filter structure and the first buffer tank work together to block byproducts from the condensation device from entering the vacuum pump and collect them in the first buffer tank. The collected byproducts are then released from the first valve for further processing. The system has a simple structure and can prevent byproducts from entering the vacuum pump and damaging it. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, wherein:

[0013] Figure 1 This is a simulation diagram of the system;

[0014] Figure 2 This is a simulation diagram of the first buffer tank;

[0015] Figure 3 This is an exploded view of the filter structure.

[0016] Figure number marking:

[0017] 100. Reactor; 101. First pipe; 102. Condensation device; 103. Second pipe; 104. First buffer tank; 105. Filter structure; 1051. Outer cylinder; 1052. Inner cylinder; 1053. Air inlet; 1054. Filter material; 106. Third pipe; 107. Vacuum pump; 108. First valve; 109. Fourth pipe; 110. Second buffer tank; 111. Second valve; 112. Third valve; 113. Air inlet valve; 114. Waste liquid treatment device; 115. Waste gas treatment device; 116. Air inlet device. Detailed Implementation

[0018] To better understand the purpose, structure, and function of this utility model, the following detailed description of specific embodiments of the "vacuum treatment system for polymerization reaction byproducts" of this utility model is provided in conjunction with the accompanying drawings.

[0019] See Figure 1 and Figure 2In this embodiment, the by-product vacuum treatment system includes a reaction vessel 100. The reaction vessel 100 is connected to a condensing device 102 through a first pipe 101. The condensing device 102 is connected to a first buffer tank 104 through a second pipe 103. A filter structure 105 is provided at the top of the first buffer tank 104. The bottom of the filter structure 105 extends into the first buffer tank 104. The top of the first buffer tank 104 is connected to a vacuum pump 107 through a third pipe 106. A first valve 108 is provided at the bottom of the first buffer tank 104. This system uses a first buffer tank 104 as the first layer of protection. Byproducts escaping from the condenser 102 will adhere to the inner wall of the first buffer tank 104, reducing the possibility of byproducts entering the vacuum pump. A filter structure 105 is also provided as the second layer of protection. Byproducts not adhering to the inner wall of the first buffer tank 104 will eventually adhere to the filter structure 105. As the amount of byproducts adhering to the inner wall of the first buffer tank 104 and the filter structure 105 increases, the byproducts will eventually form droplets that fall and settle at the bottom of the first buffer tank 104. After the polymerization reaction is complete, the byproducts can be released to the next processing module through the first valve 108 at the bottom of the first buffer tank 104. This system sets up the first buffer tank 104 and the filter structure 105 between the original condenser 102 and the vacuum pump 107. The structure is simple, prevents byproducts from escaping into the vacuum pump 107 and causing damage, and also allows for the collection of byproducts for further processing.

[0020] See further Figure 2 In this embodiment, the top of the first buffer tank 104 is connected to the flange of the third pipe 106, and the filter structure 105 is detachably installed on the top of the first buffer tank 104 via the flange, which facilitates the disassembly and replacement of the filter structure; at the same time, in order to ensure sealing, sealing rubber is provided at the flange connection position.

[0021] See further Figure 2 and Figure 3 In this embodiment, the filter structure 105 includes an outer cylinder 1051 and an inner cylinder 1052. The outer cylinder 1051 is provided with an air inlet 1053, and the inner cylinder 1052 is a mesh cylinder. The space between the inner cylinder 1052 and the outer cylinder 1051 is filled with filter material 1054. Preferably, the air inlet 1053 is located in the lower half of the outer cylinder 1051, and the upper half of the outer cylinder 1051 is kept sealed. This ensures that byproducts enter from the bottom of the outer cylinder 1051 and pass through the complete filter material 1054, thereby improving the filtration efficiency and also improving the structural strength of the outer cylinder 1051.

[0022] More specifically, as a preferred embodiment, the outer cylinder is made of metal, the inner cylinder is a metal cage, and the filling material is metal wire.

[0023] See further Figure 1In this embodiment, the first valve 108 is connected to the second buffer tank 110 through the fourth pipe 109. The bottom of the second buffer tank 110 is provided with a second valve 111, which is connected to the waste liquid treatment device 114. The top of the second buffer tank 110 is connected to the waste gas treatment device 115, so as to further process the collected by-products after the reaction is completed.

[0024] More specifically, in this embodiment, a third valve 112 is provided on the first pipe 101, and an air inlet valve 113 is provided on the third pipe 106. The air inlet valve 113 is connected to the air inlet device 116 to blow air into the first buffer tank 104. After the reaction is completed, the third valve 112 and the vacuum pump 107 are closed, and the first valve 108 and the air inlet valve 113 are opened. Gas is introduced into the filter structure 105 and the first buffer tank 104 through the air inlet device 116 to clean the filter structure 105 and the first buffer tank 104, and to accelerate the flow of by-products in the first buffer tank 104 into the second buffer tank 110. It should be noted that the introduced gas can be steam or inert gas or other gases, without limitation, as long as it can achieve the above-mentioned effect.

[0025] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A vacuum treatment system for polymerization reaction byproducts, characterized in that, The system includes a reaction vessel (100), which is connected to a condenser (102) via a first pipe (101). The condenser (102) is connected to a first buffer tank (104) via a second pipe (103). A filter structure (105) is provided at the top of the first buffer tank (104), and the bottom of the filter structure (105) extends into the first buffer tank (104). A vacuum pump (107) is connected to the top of the first buffer tank (104) via a third pipe (106). A first valve (108) is provided at the bottom of the first buffer tank (104).

2. The vacuum treatment system for polymerization reaction byproducts according to claim 1, characterized in that, The top of the first buffer tank (104) is connected to the flange of the third pipe (106), and the filter structure (105) is detachably installed on the top of the first buffer tank (104) via the flange.

3. The vacuum treatment system for polymerization reaction byproducts according to claim 2, characterized in that, The filter structure (105) includes an outer cylinder (1051) and an inner cylinder (1052). The outer cylinder (1051) is provided with an air inlet (1053). The inner cylinder (1052) is a mesh cylinder. The space between the inner cylinder (1052) and the outer cylinder (1051) is filled with filter material (1054).

4. The vacuum treatment system for polymerization reaction byproducts according to claim 3, characterized in that, The air inlet (1053) is located in the lower half of the outer cylinder (1051).

5. A vacuum treatment system for polymerization reaction byproducts according to any one of claims 1-4, characterized in that, The first valve (108) is connected to the second buffer tank (110) through the fourth pipe (109). The second buffer tank (110) is provided with a second valve (111) at the bottom. The second valve (111) is connected to the waste liquid treatment device (114). The top of the second buffer tank (110) is connected to the waste gas treatment device (115).

6. The vacuum treatment system for polymerization reaction byproducts according to claim 5, characterized in that, A third valve (112) is provided on the first pipe (101), and an air inlet valve (113) is provided on the third pipe (106). The air inlet valve (113) is connected to the air inlet device (116) to blow air into the first buffer tank (104).

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