Tail gas recovery device in production process of preparing tetrahydrofuran from LBDO

Abstract

The utility model discloses a tail gas recovery device in the production process of preparing tetrahydrofuran from LBDO, and relates to the technical field of tail gas recovery. The filter comprises a filter box, a vibration filter mechanism and an auxiliary mechanism are arranged on the filter box, the vibration filter mechanism comprises a rotating shaft rotationally connected into the filter box, the front side of the rotating shaft extends out of the filter box, a motor support is fixedly connected to the front side of the filter box, a motor is fixedly connected to the motor support, and the auxiliary mechanism is fixedly connected to the motor. An output shaft of the motor is fixedly connected with the rotating shaft through a coupler, the auxiliary mechanism comprises a partition door hinged to the left side of the filter box, and a handle is fixedly connected to the outer wall of the partition door. According to the tail gas recovery device, the vibration filtering mechanism is arranged, so that the problems that in the using process of an existing tail gas recovery device in the production process of preparing tetrahydrofuran from LBDO, large particles exist in tail gas, a filter screen is prone to being blocked, the tail gas filtering speed is reduced, and the tail gas recovery efficiency is affected are solved.

Description

Technical Field

[0001] This utility model belongs to the field of tail gas recovery technology, and in particular relates to a tail gas recovery device in the production process of LBDO to prepare tetrahydrofuran. Background Technology

[0002] With the rapid development of the chemical industry, tetrahydrofuran, as an important organic solvent and organic synthesis intermediate, is widely used in pharmaceuticals, coatings, resins and other fields. The process of preparing tetrahydrofuran from LBDO is becoming increasingly mature. However, the tail gas generated in this production process contains unreacted raw materials, by-products and tetrahydrofuran vapor. Direct emission of these gases will not only waste resources but also pollute the environment. Therefore, efficient tail gas recovery devices are needed to treat these tail gases.

[0003] However, in the existing LBDO to tetrahydrofuran production process, the exhaust gas recovery device contains large particles, which can easily cause filter clogging, reduce the exhaust gas filtration speed, and affect the exhaust gas recovery efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a tail gas recovery device in the production process of LBDO to tetrahydrofuran. By setting a vibration filtration mechanism, it solves the problem that in the existing tail gas recovery devices in the production process of LBDO to tetrahydrofuran, the presence of large particles in the tail gas can easily cause the filter screen to become clogged, reducing the speed of tail gas filtration and affecting the tail gas recovery efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a tail gas recovery device in the production process of LBDO to prepare tetrahydrofuran, including a filter box, on which a vibration filter mechanism and an auxiliary mechanism are provided;

[0007] The vibration filtering mechanism includes a rotating shaft rotatably connected inside the filter box, the front side of the rotating shaft extending outside the filter box, a motor bracket fixedly connected to the front side of the filter box, a motor fixedly connected to the motor bracket, and the output shaft of the motor fixedly connected to the rotating shaft via a coupling. The auxiliary mechanism includes a partition door hinged to the left side of the filter box, a handle fixedly connected to the outer wall of the partition door, a fixing block fixedly connected to the outer wall of the partition door, and two trapezoidal sliding grooves on the left side of the filter box.

[0008] Furthermore, an air inlet pipe is connected to the right side of the filter box, an air outlet pipe is connected to the top of the filter box, an extrusion block is fixedly connected to the outer wall of the rotating shaft, and a trapezoidal groove is provided on both the left and right inner walls of the filter box.

[0009] Furthermore, filter screens are slidably connected to the inner walls of the two trapezoidal slide grooves, and slide rods are fixedly connected to each of the two trapezoidal slide grooves. The two slide rods pass through the filter screens and are slidably connected to the filter screens.

[0010] Furthermore, two springs are fitted on the outer walls of both slide rods. The side of the two springs that are far apart from each other is fixedly connected to the filter box, and the side of the two springs that are close to each other is fixedly connected to the filter screen.

[0011] Furthermore, the inner walls of both trapezoidal slides are slidably connected to sliders, the front sides of the two sliders are fixedly connected to a fixing frame, and the two sliders are provided with limit slides.

[0012] Furthermore, a fixed plate is slidably connected between the two limiting slides, and a spring telescopic rod is fixedly connected to the left inner wall of each of the two limiting slides, and the right side of each of the two spring telescopic rods is fixedly connected to the fixed plate.

[0013] This utility model has the following beneficial effects:

[0014] 1. By setting up a vibration filtration mechanism, exhaust gas is added into the filter box through the intake pipe on the right side. At this time, the exhaust gas passes through the filter screen and enters the recovery tank through the outlet pipe. The motor is then started, and the motor drives the squeezing block on the rotating shaft to rotate through the coupling. When the squeezing block rotates, it will squeeze the filter screen downward. The filter screen slides and moves downward on the two trapezoidal slide grooves and the two slide rods. At this time, the filter screen squeezes the two springs on the lower side to generate deformation and elastic force, while the two springs on the upper side will be stretched to generate tension. When the squeezing block moves the filter screen, under the action of the elastic force of the two springs on the lower side and the tension of the two springs on the upper side, the filter screen shakes and vibrates on the two trapezoidal slide grooves and the two slide rods. This process is repeated to clean the impurities on the filter screen. The cleaned-off large particles of impurities will fall to the bottom of the filter box to prevent impurities from accumulating on the filter screen and to prevent the filter screen from being blocked, affecting the filtration efficiency and flow of exhaust gas. This ensures that the exhaust gas can continuously and stably pass through the filter screen into the recovery tank and maintain the normal operation of the entire exhaust gas recovery device.

[0015] 2. By setting up an auxiliary mechanism, when it is necessary to clean the impurities at the bottom of the filter box, the fixed frame is pulled forward. The fixed frame drives two sliders to move in the two trapezoidal slides. At this time, the two sliders drive the fixed plate to move. Under the action of the arc surface of the fixed block on the partition door, the fixed plate is squeezed to the left, causing the fixed plate to move to the left. At this time, the fixed plate will squeeze the two spring telescopic rods to deform and generate elastic force. When the fixed plate moves past the fixed block, under the action of the elastic force of the two spring telescopic rods, the fixed plate is reset. At this time, the partition door is opened by pulling the handle, thereby cleaning the impurities at the bottom of the filter box. When closing the partition door, the fixed frame is pushed backward to drive the two sliders to move. Through the same process as above, the partition door is fixed by fixing the fixed block. This makes the operation simple and convenient, without complicated tools or cumbersome steps, improving the efficiency of cleaning impurities, helping to maintain the normal working state of the filter screen and the stable operation of the entire exhaust gas recovery device, and reducing the maintenance cost of the equipment.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the vibration filtering mechanism of this utility model;

[0020] Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0021] Figure 4 This is a partial cross-sectional view of the auxiliary mechanism of this utility model;

[0022] Figure 5 This utility model Figure 4 A magnified structural diagram of B in the diagram.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Filter box; 111. Inlet pipe; 112. Outlet pipe; 2. Vibration filter mechanism; 210. Rotating shaft; 211. Motor bracket; 212. Motor; 213. Extrusion block; 214. Trapezoidal slide groove one; 215. Filter screen; 216. Slide rod; 217. Spring one; 3. Auxiliary mechanism; 311. Partition door; 312. Handle; 313. Fixing block; 314. Trapezoidal slide groove two; 315. Sliding block; 316. Fixing frame; 317. Limiting slide groove; 318. Fixing plate; 319. Spring telescopic rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 As shown, this utility model is a tail gas recovery device in the production process of LBDO to tetrahydrofuran. It includes a filter box 1, a vibration filtration mechanism 2 and an auxiliary mechanism 3 mounted on the filter box 1. The vibration filtration mechanism 2 includes a rotating shaft 210 rotatably connected inside the filter box 1, with the front side of the rotating shaft 210 extending outside the filter box 1. A motor bracket 211 is fixedly connected to the front side of the filter box 1, and a motor 212 is fixedly connected to the motor bracket 211. The output shaft of the motor 212 is fixedly connected to the rotating shaft 210 via a coupling. An air inlet pipe 111 is connected to the right side of the filter box 1, and an air outlet pipe 112 is connected to the top of the filter box 1. A pressing block 213 is fixedly connected to the outer wall of the rotating shaft 210. The left and right inner walls of the filter box 1 are both provided with... Two trapezoidal chutes 214 are slidably connected to the inner walls of the two chutes 214, and two slide rods 216 are fixedly connected to each of the two chutes 214. The two slide rods 216 pass through the filter screens 215 and are slidably connected to the filter screens 215. Two springs 217 are sleeved on the outer walls of the two slide rods 216. The side of the two springs 217 that is far apart from each other is fixedly connected to the filter box 1, and the side of the two springs 217 that is close to each other is fixedly connected to the filter screens 215. By setting up the vibration filtration mechanism 2, impurities are prevented from accumulating on the filter screens, preventing the filter screens from being blocked and affecting the filtration efficiency and flow rate of the exhaust gas. This ensures that the exhaust gas can continuously and stably pass through the filter screens into the recovery tank, maintaining the normal operation of the entire exhaust gas recovery device.

[0027] The auxiliary mechanism 3 includes a partition door 311 hinged to the left side of the filter box 1. A handle 312 is fixedly connected to the outer wall of the partition door 311, and a fixing block 313 is fixedly connected to the outer wall of the partition door 311. Two trapezoidal slide grooves 314 are opened on the left side of the filter box 1. A slider 315 is slidably connected to the inner wall of each of the two trapezoidal slide grooves 314. A fixing frame 316 is fixedly connected to the front side of each of the two sliders 315. A limit slide groove 317 is opened on each of the two limit slide grooves 317. A fixing plate 318 is slidably connected between the two limit slide grooves 317. A spring telescopic rod 319 is fixedly connected to the left inner wall of each of the two limit slide grooves 317. The right side of each spring telescopic rod 319 is fixedly connected to the fixing plate 318. By setting up the auxiliary mechanism 3, the operation is simple and convenient, without the need for complicated tools or cumbersome steps. This improves the efficiency of cleaning impurities, helps maintain the normal working state of the filter screen and the stable operation of the entire exhaust gas recovery device, and reduces the maintenance cost of the equipment.

[0028] A specific application of this embodiment is as follows: During use, exhaust gas is introduced into the filter box 1 through the intake pipe 111 on the right side. At this time, the exhaust gas passes through the filter screen 215 and enters the recovery tank from the exhaust pipe 112. Then, the motor 212 is started, and the motor 212 drives the pressing block 213 on the rotating shaft 210 to rotate through the coupling. When the pressing block 213 rotates, it will press the filter screen 215 downward. The filter screen 215 slides and moves downward on the two trapezoidal slide grooves 214 and the two slide rods 216. At this time, the filter screen 215 presses the filter screen downward on the filter screen 215. The two lower springs 217 are compressed to deform and generate elastic force, while the two upper springs 217 are stretched to generate tensile force. When the compression block 213 moves the filter screen 215, the elastic force of the two lower springs 217 and the tensile force of the two upper springs 217 cause the filter screen 215 to sway and vibrate on the two trapezoidal grooves 214 and the two slide rods 216. This process is repeated to clean the impurities on the filter screen 215. Particulate impurities will fall to the bottom of filter box 1. When it is necessary to clean the impurities at the bottom of filter box 1, by pulling the fixing frame 316 forward, the two sliders 315 driven by the fixing frame 316 move in the two trapezoidal slide grooves 314 respectively. At this time, the two sliders 315 drive the fixing plate 318 to move. Under the action of the arc surface of the fixing block 313 on the partition door 311, the fixing plate 318 is squeezed to the left, causing the fixing plate 318 to move to the left. At this time, the fixing plate 318 will exert pressure on the two spring telescopic rods 31. 9. Extrusion causes deformation and elasticity. When the fixed plate 318 moves past the fixed block 313, the fixed plate 318 is reset under the elastic force of the two spring telescopic rods 319. At this time, the partition door 311 is opened by pulling the handle 312, thereby cleaning the impurities at the bottom of the filter box 1. When the partition door 311 is closed, the two sliders 315 are moved by pushing the fixed frame 316 to the rear. Through the same process as above, the partition door 311 is fixed by fixing the fixed block 313.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tail gas recovery device in the production process of tetrahydrofuran from LBDO, characterized in that: Includes a filter box (1), with an air inlet pipe (111) connected to the right side of the filter box (1) and an air outlet pipe (112) connected to the top. The filter box (1) is equipped with a vibration filter mechanism (2) and an auxiliary mechanism (3). The vibration filtering mechanism (2) includes a rotating shaft (210) rotatably connected inside the filter box (1) and a pressing block (213) fixed to the outer wall of the rotating shaft (210). The front side of the rotating shaft (210) extends to the outside of the filter box (1). A motor bracket (211) is fixedly connected to the front side of the filter box (1). A motor (212) is fixedly connected to the motor bracket (211). The output shaft of the motor (212) is fixedly connected to the rotating shaft (210) through a coupling. The left inner wall and the right inner wall of the filter box (1) are both provided with The inner walls of the two trapezoidal slides (214) are slidably connected to a filter screen (215). Each of the two trapezoidal slides (214) is fixedly connected to a slide rod (216). The two slide rods (216) pass through the filter screen (215) and are slidably connected to the filter screen (215). The outer walls of the two slide rods (216) are fitted with two springs (217). The side of the two springs (217) that are far apart from each other is fixedly connected to the filter box (1), and the side that is close to each other is fixedly connected to the filter screen (215). The auxiliary mechanism (3) includes a partition door (311) hinged to the left side of the filter box (1). The outer wall of the partition door (311) is fixedly connected with a handle (312) and a fixing block (313). Two trapezoidal slides (314) are opened on the left side of the filter box (1).

2. The tail gas recovery device in the LBDO to tetrahydrofuran production process according to claim 1, characterized in that, The inner walls of the two trapezoidal slides (314) are slidably connected to sliders (315), and the front sides of the two sliders (315) are fixedly connected to a fixing frame (316). The two sliders (315) are provided with limit slides (317).

3. The tail gas recovery device in the LBDO to tetrahydrofuran production process according to claim 2, characterized in that, A fixing plate (318) is slidably connected between the two limiting slide grooves (317). A spring telescopic rod (319) is fixedly connected to the left inner wall of each of the two limiting slide grooves (317). The right side of the two spring telescopic rods (319) is fixedly connected to the fixing plate (318).

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