A catalyst adding device for producing monofluorodichloroethane

Abstract

The utility model provides a kind of catalyst adding device for monofluorodichloroethane production, it is related to monofluorodichloroethane production technical field, including device shell, track is equipped in device shell inside upper portion, rotation shell is slidably equipped on track, catalyst feeding cylinder is equipped in rotation shell inside, catalyst feeding cylinder both ends are rotatably installed with rotation shell by solid shaft and hollow shaft respectively, through slot is equipped in catalyst feeding cylinder top and bottom, first feed sieve plate and second feed sieve plate are respectively equipped in two through slots, drive oil cylinder is equipped in device shell inside, drive oil cylinder output end is connected with rotation shell one end;The utility model rotation shell and its internal structure can be integrally driven to move reciprocatingly on track by drive oil cylinder, first feed sieve plate and second feed sieve plate arranged in catalyst feeding cylinder inside can be respectively screened, so that catalyst is in dispersed state and enters into reaction system.

Description

Technical Field

[0001] This utility model relates to the field of monofluorodichloroethane production technology, and in particular to a catalyst addition device for monofluorodichloroethane production. Background Technology

[0002] Dichlorofluoroethane is a high-purity liquid widely used in cleaning and solvent applications. The preparation of dichlorofluoroethane involves the following steps: 1. Acetylene reacts with hydrogen chloride or hydrogen fluoride in the presence of a catalyst to produce vinyl chloride or vinyl fluoride; 2. The vinyl chloride obtained in step 1 reacts with hydrogen fluoride, or the vinyl fluoride obtained in step 1 reacts with hydrogen chloride in the presence of a catalyst to produce dichlorofluoroethane; 3. The dichlorofluoroethane obtained in step 2 reacts with chlorine gas in the presence of a catalyst or ultraviolet light to produce dichlorofluoroethane.

[0003] In the entire production process of dichlorofluoroethane, the catalyst is involved in multiple steps. Existing technologies lack catalyst dispersibility treatment when adding the catalyst to the reaction system, resulting in the catalyst not participating effectively and rapidly in the reaction. Therefore, this invention proposes a catalyst addition device for dichlorofluoroethane production to solve the above problems. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes a catalyst addition device for the production of dichlorofluoroethane. The rotating shell and its internal structure can be driven by a hydraulic cylinder to reciprocate on a track. The first and second feed sieves inside the catalyst loading cylinder can perform sieving processes, allowing the catalyst to enter the reaction system in a dispersed state.

[0005] To achieve the objectives of this utility model, the following technical solution is adopted:

[0006] A catalyst addition device for the production of dichlorofluoroethane includes a device shell. A track is provided above the interior of the device shell, and a rotating shell slides along the track. A catalyst feeding cylinder is located inside the rotating shell. The catalyst feeding cylinder is rotatably mounted to the rotating shell at both ends via a solid shaft and a hollow shaft, respectively. The top and bottom of the catalyst feeding cylinder are provided with through slots, and a first feed sieve plate and a second feed sieve plate are respectively installed in the two through slots. An installation groove is provided at the top of the rotating shell, and a backflushing mechanism is located inside the installation groove.

[0007] The device housing is equipped with a drive cylinder, and the output end of the drive cylinder is connected to one end of the rotary housing.

[0008] A further improvement is that: one end of the solid shaft extends to the outside of the rotating housing and is provided with a driven gear; a motor is provided on the side wall of the rotating housing at the driven gear; a driving gear is installed at the output end of the motor; and the driving gear meshes with the driven gear.

[0009] Further improvements are made in that: the back-blowing mechanism includes an air inlet pipe interface and an air outlet slot, the air outlet slot is provided at the lower part of the mounting groove, the lower end of the air outlet slot extends into the interior of the rotating shell, the air inlet pipe interface is provided on one side wall of the mounting groove, and the air inlet pipe interface is connected to an external air source through a flexible hose.

[0010] A further improvement is that the hollow shaft connects to the inside of the catalyst feeding cylinder and extends to the outside of the rotating shell at one end, and a feeding port is rotatably provided on the end of the hollow shaft extending to the outside of the rotating shell.

[0011] A further improvement is that a fixing plate is provided on the lower outer side of the device housing, and a fixing hole is provided on the fixing plate. The device housing is installed at the fixing hole and connected to the catalyst addition port of the monofluorodichloroethane production system equipment by bolts.

[0012] A further improvement is that an operation window is provided on the device housing near the feed interface, a sealing plate is detachably installed on the operation window, and a transparent viewing window is provided on the front of the device housing.

[0013] The beneficial effects of this utility model are as follows: This utility model sets the catalyst addition device for the production of dichlorofluoroethane as a unit composed of a device shell, a track, a rotating shell, and a catalyst feeding cylinder. The rotating shell and its internal structure can be driven as a whole to reciprocate on the track by a drive cylinder. The first and second feed screens inside the catalyst feeding cylinder can perform screening respectively, so that the catalyst enters the reaction system in a dispersed state, thereby promoting the production quality of dichlorofluoroethane. The catalyst feeding cylinder can rotate inside the rotating shell, so that the first and second feed screens can work alternately, avoiding blockage of a single feed screen that affects the continuity of feeding. The backflushing mechanism set at the top of the rotating shell can backflush and unclog blocked feed screens, so that the entire catalyst addition device can stably carry out catalyst addition operations. Attached Figure Description

[0014] Figure 1 This is a first three-dimensional schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a second three-dimensional schematic diagram of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the first explosion of the structure of this utility model;

[0017] Figure 4 This is a second explosion diagram of the structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the assembly structure of the rotating shell and the track of this utility model;

[0019] Figure 6 This is a schematic diagram of the installation structure of the first feed screen plate of this utility model;

[0020] Figure 7 This is a schematic diagram of the installation structure of the second feed screen plate of this utility model.

[0021] The components are as follows: 1. Device housing; 2. Track; 3. Rotary housing; 4. Catalyst feeding cylinder; 5. Solid shaft; 6. Hollow shaft; 7. First feed screen plate; 8. Second feed screen plate; 9. Mounting trough; 10. Drive cylinder; 11. Driven gear; 12. Motor; 13. Drive gear; 14. Air inlet pipe interface; 15. Air outlet slot; 16. Hose; 17. Feed interface; 18. Fixing plate; 19. Fixing hole; 20. Sealing plate; 21. Transparent window. Detailed Implementation

[0022] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0023] according to Figure 1-7 As shown in the figure, this embodiment proposes a catalyst addition device for the production of dichlorofluoroethane, including a device housing 1. A track 2 is provided above the interior of the device housing 1, and a rotating shell 3 slides on the track 2. A catalyst feeding cylinder 4 is located inside the rotating shell 3. The catalyst feeding cylinder 4 is rotatably mounted to the rotating shell 3 at both ends via a solid shaft 5 and a hollow shaft 6, respectively. The top and bottom of the catalyst feeding cylinder 4 are provided with through grooves, and a first feed screen plate 7 and a second feed screen plate 8 are respectively provided in the two through grooves. An installation groove 9 is provided at the top of the rotating shell 3, and a backflushing mechanism is provided inside the installation groove 9. A drive cylinder 10 is provided inside the device housing 1, and the output end of the drive cylinder 10 is connected to one end of the rotating shell 3. A fixing plate 18 is provided on the lower outer side of the device housing 1, and a fixing hole 19 is provided on the fixing plate 18. The device housing 1 is installed at the fixing hole 19 via bolts to the catalyst addition port of the dichlorofluoroethane production system equipment.

[0024] This invention relates to a catalyst addition device for the production of dichlorofluoroethane. After the device is installed, the catalyst to be added is added to the catalyst feeding cylinder 4. Then, by starting the drive cylinder 10, the rotating shell 3 is driven to move back and forth on the track 2 to achieve the sieving and dispersion of the catalyst from the second feed screen plate 8 and its addition to the reaction system. When the sieving capacity of the second feed screen plate 8 decreases after a certain period of use, the catalyst feeding cylinder 4 is controlled to rotate inside the rotating shell 3, so that the first feed screen plate 7 and the second feed screen plate 8 exchange positions, so that the first feed screen plate 7 can continue to disperse the material, while the second feed screen plate 8 located above can be unblocked by the backflushing mechanism, so that the second feed screen plate 8 can restore its sieving capacity.

[0025] One end of the solid shaft 5 extends to the outside of the rotating shell 3 and is equipped with a driven gear 11. A motor 12 is installed on the side wall of one end of the rotating shell 3 at the driven gear 11. A driving gear 13 is installed at the output end of the motor 12, and the driving gear 13 meshes with the driven gear 11. When controlling the catalyst feeding cylinder 4 to rotate inside the rotating shell 3, starting the motor 12 can drive the solid shaft 5 with the driven gear 11 installed to rotate using the driving gear 13, thereby driving the catalyst feeding cylinder 4 to rotate.

[0026] The back-blowing mechanism includes an air inlet duct interface 14 and an air outlet 15. The air outlet 15 is located at the lower part of the mounting groove 9, extending to the interior of the rotating shell 3. An air inlet duct interface 14 is located on one side wall of the mounting groove 9, and is connected to an external air source via a flexible hose 16. When the first feed screen plate 7 or the second feed screen plate 8 rotates directly below the back-blowing mechanism, external air is introduced into the mounting groove 9 via the flexible hose 16 and input into the rotating shell 3 via the air outlet 15, thereby achieving back-blowing and unblocking of the first feed screen plate 7 or the second feed screen plate 8.

[0027] The hollow shaft 6 connects to the interior of the catalyst feeding cylinder 4 and extends to the outside of the rotating shell 3 at one end. A feed inlet 17 is rotatably mounted on the end of the hollow shaft 6 extending to the outside of the rotating shell 3. An operation window is provided on the device housing 1 near the feed inlet 17, and a sealing plate 20 is detachably installed on the operation window. A transparent viewing window 21 is provided on the front of the device housing 1. The transparent viewing window 21 of this invention facilitates the operator's observation of the catalyst addition operation status of the device housing 1. The operation window and sealing plate 20 enable the addition of catalyst to the catalyst feeding cylinder 4. Specifically, by removing the sealing plate 20 to expose the feed inlet 17, the catalyst is fed into the hollow shaft 6 through the feed inlet 17 and then into the interior of the catalyst feeding cylinder 4.

[0028] This invention relates to a catalyst addition device for the production of dichlorofluoroethane, comprising a housing 1, a track 2, a rotating shell 3, and a catalyst feeding cylinder 4. The rotating shell and its internal structure are driven by a hydraulic cylinder 10 to reciprocate on the track 2. The first feed screen 7 and the second feed screen 8 inside the catalyst feeding cylinder 4 can perform screening, allowing the catalyst to enter the reaction system in a dispersed state, thereby improving the production quality of dichlorofluoroethane. The catalyst feeding cylinder 4 can rotate inside the rotating shell 3, allowing the first feed screen 7 and the second feed screen 8 to work alternately, preventing blockage of a single feed screen from affecting the continuity of feeding. A backflushing mechanism located at the top of the rotating shell 3 can backflush and unclog blocked feed screens, ensuring that the entire catalyst addition device can stably perform catalyst addition operations.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A catalyst addition device for the production of dichlorofluoroethane, comprising a device shell (1), characterized in that: The device housing (1) has a track (2) at the top inside, and a rotating shell (3) slides on the track (2). The rotating shell (3) has a catalyst feeding cylinder (4) inside. The catalyst feeding cylinder (4) is rotatably mounted to the rotating shell (3) at both ends by a solid shaft (5) and a hollow shaft (6). The catalyst feeding cylinder (4) has through grooves at the top and bottom. The two through grooves have a first feed screen plate (7) and a second feed screen plate (8) respectively. The rotating shell (3) has an installation groove (9) at the top, and a backflushing mechanism is provided inside the installation groove (9). The device housing (1) is equipped with a drive cylinder (10), and the output end of the drive cylinder (10) is connected to one end of the rotary housing (3).

2. The catalyst addition device for the production of dichlorofluoroethane according to claim 1, characterized in that: One end of the solid shaft (5) extends to the outside of the rotating shell (3) and is provided with a driven gear (11). A motor (12) is provided on the side wall of the rotating shell (3) at one end of the driven gear (11). A driving gear (13) is installed at the output end of the motor (12). The driving gear (13) meshes with the driven gear (11).

3. The catalyst addition device for the production of dichlorofluoroethane according to claim 1, characterized in that: The back-blowing mechanism includes an air inlet pipe interface (14) and an air outlet slot (15). The air outlet slot (15) is provided at the bottom inside the mounting groove (9). The lower end of the air outlet slot (15) extends into the interior of the rotating shell (3). An air inlet pipe interface (14) is provided on one side wall of the mounting groove (9). The air inlet pipe interface (14) is connected to an external air source through a flexible hose (16).

4. The catalyst addition device for the production of dichlorofluoroethane according to claim 1, characterized in that: The hollow shaft (6) is connected to the inside of the catalyst loading cylinder (4) and one end extends to the outside of the rotating shell (3). The end of the hollow shaft (6) extending to the outside of the rotating shell (3) is provided with a feed port (17).

5. The catalyst addition device for the production of dichlorofluoroethane according to claim 1, characterized in that: The device housing (1) is provided with a fixing plate (18) on the lower outer side, and the fixing plate (18) is provided with fixing holes (19). The device housing (1) is installed at the fixing holes (19) with the catalyst addition port of the monofluorodichloroethane production system equipment by bolts.

6. The catalyst addition device for the production of dichlorofluoroethane according to claim 4, characterized in that: An operation window is provided on the device housing (1) near the feed interface (17), and a sealing plate (20) is detachably installed on the operation window. A transparent viewing window (21) is provided on the front of the device housing (1).

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