Gas catalytic reactor

Abstract

The utility model provides a gas catalytic reactor which comprises a reaction tube body and a first sealing piece, one end of the reaction tube body is provided with a first opening, and the side wall of the reaction tube body extends to form a gas inlet tube and a gas outlet tube which only allow gas to flow. A gas reaction area filled with a catalyst and used for gas reaction is formed in the reaction tube body, and the first sealing piece is detachably connected with the first opening so as to seal the gas reaction area; a catalyst is directly placed in the reaction tube body, and the first openings are formed in the two ends of the reaction tube body; when the catalyst needs to be replaced, only the first sealing piece and the first opening need to be detached, the catalyst in the reaction tube body is poured out, then a new catalyst is put in, and finally the first sealing piece and the first opening are fixed. According to the utility model, the catalyst can be conveniently replaced, and the problem that the catalyst is inconvenient to replace is solved.

Description

A gas catalytic reactor Technical Field

[0001] This utility model relates to the field of vinyl chloride manufacturing equipment technology, and in particular to a gas catalytic reactor. Background Technology

[0002] Vinyl chloride is the monomer used to synthesize polyvinyl chloride (PVC), one of the world's most produced resins. PVC possesses excellent mechanical strength, stable chemical properties, and ease of processing, making it widely used in industry, agriculture, building materials, and everyday consumer goods. Vinyl chloride is generally produced via the acetylene process.

[0003] For example, patent application CN106512866A provides a reactor for synthesizing vinyl chloride using an acetylene process, comprising a reactor body, a reaction mechanism, and a cooling mechanism; the reactor body is provided with an inlet and an outlet; the reaction mechanism is located inside the reactor body; the reactor body is also provided with a cooling mechanism; the reactor body is composed of an upper shell, a cylindrical body, and a lower shell connected together; the upper shell, cylindrical body, and lower shell are connected sequentially from top to bottom; the cooling mechanism is located between the reactor body and the reaction mechanism; a rotating device is also connected to the reaction mechanism.

[0004] The aforementioned reactor has the following problem: it encapsulates the catalyst inside the entire reactor body, so when the catalyst needs to be replaced, the entire reactor must be disassembled to replace the catalyst. Summary of the Invention

[0005] In view of this, it is necessary to provide a gas catalytic reactor that can solve the problem of troublesome catalyst replacement in the prior art.

[0006] This utility model provides a gas catalytic reactor, comprising:

[0007] A reaction tube body has a first opening at one end. A gas inlet pipe and a gas outlet pipe, for gas flow only, extend from the sidewall of the reaction tube body. A gas reaction zone is formed within the reaction tube body for filling with a catalyst and supplying gas for reaction.

[0008] A first seal is detachably connected to the first opening to seal the gas reaction area.

[0009] In some feasible solutions, the first seal includes a first insert plug and a first fixing member. The first insert plug is at least partially able to extend into the first opening and be press-fitted into the interior of the reaction tube. The first fixing member is fixed to the portion of the first insert plug located outside the reaction tube and is detachably fixed to the reaction tube.

[0010] In some feasible solutions, the end of the reaction tube with the first opening extends to form a first flange, and the first fastener is detachably connected to the first flange.

[0011] In some feasible solutions, the first seal further includes a catalyst support fixed to the portion of the first insert plug that extends into the first opening, for supporting the catalyst within the reaction tube.

[0012] In some feasible solutions, the catalyst support includes a vertical rod and a support tray. The vertical rod is vertically arranged, with one end fixed to the first insertion plug, and the support tray is fixed to the other end of the vertical rod. The outer diameter of the support tray matches the inner diameter of the reaction tube.

[0013] In some feasible solutions, the tray is provided with a number of vent holes, the diameter of which is smaller than the diameter of the catalyst particles.

[0014] In some feasible solutions, a second seal is also included, wherein a second opening is provided on the other end of the reaction tube, and the second seal is detachably connected to the second opening.

[0015] In some feasible solutions, the second seal includes a second insertion plug and a second fixing member. The second insertion plug is at least partially able to extend into the second opening and be press-fitted into the interior of the reaction tube. The second fixing member is fixed to the portion of the second insertion plug located outside the reaction tube. The second fixing member is detachably fixed to the reaction tube. The temperature detection device is fixed to the second insertion plug.

[0016] In some feasible solutions, a heating sleeve is also included, which is fitted around the outer periphery of the reaction tube, forming a closed heating area between the heating sleeve and the reaction tube.

[0017] In some feasible solutions, the heating sleeve is provided with a fluid inlet and a fluid outlet, the fluid inlet and the fluid outlet are connected to the heating area, and the distance between the fluid inlet and the first opening is less than the distance between the fluid outlet and the first opening.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention includes a reaction tube and a first sealing element. The reaction tube has a first opening at one end. A gas inlet pipe and a gas outlet pipe extend from the side wall of the reaction tube, allowing only gas flow. A gas reaction zone filled with a catalyst and supplying gas for reaction is formed within the reaction tube. The first sealing element is detachably connected to the first opening to restrict the catalyst from being placed directly within the gas reaction zone. The first opening is located at both ends of the reaction tube. In use, gas enters the reaction tube through the gas inlet pipe, directly contacting the catalyst to improve reaction efficiency. The reacted gas exits through the gas outlet pipe. When the catalyst needs to be replaced, simply disconnect the first sealing element from the first opening, empty the catalyst from the reaction tube, add new catalyst, and then reconnect and secure the first sealing element to the first opening. This invention allows for convenient catalyst replacement, solving the problem of inconvenient catalyst replacement in existing technologies. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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.

[0021] Figure 1 is a schematic diagram of the gas catalytic reactor in this utility model;

[0022] Figure 2 shows a schematic diagram of the structure of the pallet in Figure 1;

[0023] Wherein: 1-reaction tube body, 11-first opening, 111-first flange, 12-gas inlet pipe, 13-gas outlet pipe, 14-second opening, 141-second flange, 2-first seal, 21-first insert plug, 22-first fixing member, 23-catalyst support member, 231-upright rod, 232-support plate, 232a-vent hole, 3-second seal, 31-second insert plug, 32-second fixing member, 4-heating sleeve, 41-fluid inlet, 42-fluid outlet. Detailed Implementation

[0024] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0025] As shown in Figure 1, an embodiment of the present invention provides a gas catalytic reactor, which includes: a reaction tube 1 and a first sealing member 2. One end of the reaction tube 1 is provided with a first opening 11. A gas inlet pipe 12 and a gas outlet pipe 13 for gas flow are respectively extended on the side wall of the reaction tube 1. A gas reaction zone filled with catalyst and for gas to react is formed inside the reaction tube 1. The first sealing member 2 is detachably connected to the first opening 11 to seal the gas reaction zone.

[0026] In this invention, the catalyst is placed directly inside the reaction tube 1, and the first opening 11 is provided at both ends of the reaction tube 1. During use, gas enters the reaction tube 1 through the gas inlet pipe 12, directly contacting the catalyst to improve reaction efficiency. The gas produced after the reaction is completed is discharged through the gas outlet pipe 13. When the catalyst needs to be replaced, simply disconnect the first sealing member 2 from the first opening 11, pour out the catalyst from the reaction tube 1, add new catalyst, and then reconnect and fix the first sealing member 2 to the first opening 11. This invention allows for convenient catalyst replacement, solving the problem of inconvenient catalyst replacement in existing technologies.

[0027] Specifically, the reaction tube 1 is cylindrical and arranged vertically, with the first opening 11 located at the lower end of the reaction tube 1.

[0028] Furthermore, the gas inlet pipe 12 is closer to the first opening 11 than the gas outlet pipe 13, while the gas outlet pipe 13 is farther away from the first opening 11 than the gas inlet pipe 12. This design allows the gas to enter the reaction tube 1 from below and exit from above. Gravity extends the residence time of the gas within the reaction tube 1, thereby increasing the contact time with the catalyst and improving the reaction efficiency.

[0029] Specifically, the first sealing member 2 includes a first insertion plug 21 and a first fixing member 22. The first insertion plug 21 can at least partially extend into the first opening 11 and be press-fitted into the interior of the reaction tube 1. The first fixing member 22 is fixed to the portion of the first insertion plug 21 located outside the reaction tube 1. The first fixing member 22 is detachably fixed to the reaction tube 1.

[0030] In this embodiment, the end of the reaction tube 1 with the first opening 11 extends to form a first flange 111, and the first fixing member 22 is detachably connected to the first flange 111 by bolts. During the gas reaction, the first fixing member 22 and the first flange 111 are locked by bolts, and the first insert plug 21 closes the first opening 11, thus enclosing the catalyst within the gas reaction area. When the catalyst needs to be replaced, the bolts between the first fixing member 22 and the first flange 111 are removed, the first insert plug 21 is pulled out from the first opening 11, and the catalyst is poured out from the first opening 11. Then, a new catalyst is placed into the first opening 11, the first insert plug 21 is inserted into the first opening 11, and the first fixing member 22 and the first flange 111 are fixed by bolts. Thus, the catalyst replacement is completed.

[0031] Furthermore, the first sealing member 2 also includes a catalyst support member 23, which is fixed on the portion of the first insertion plug 21 that extends into the first opening 11, and is used to support the catalyst inside the reaction tube 1.

[0032] Furthermore, the catalyst support 23 includes a vertical rod 231 and a support tray 232. The vertical rod 231 is vertically arranged, with one end fixed to the first insertion plug 21. The support tray 232 is fixed to the other end of the vertical rod 231. The outer diameter of the support tray 232 matches the inner diameter of the reaction tube 1.

[0033] Furthermore, as shown in Figure 2, the tray 232 is provided with a plurality of vent holes 232a. The diameter of the vent holes 232a is smaller than the diameter of the catalyst particles. The purpose of the vent holes 232a is to allow airflow to pass through.

[0034] Furthermore, it also includes a second sealing element 3, and a second opening 14 is provided on the other end of the reaction tube 1. The second sealing element 3 is detachably connected to the second opening 14. The second sealing element 3 is provided with a temperature detection device 33 for detecting the reaction temperature inside the reaction tube 1.

[0035] Furthermore, the second sealing member 3 includes a second insertion plug 31 and a second fixing member 32. The second insertion plug 31 can at least partially extend into the second opening 14 and be press-fitted into the interior of the reaction tube 1. The second fixing member 32 is fixed to the portion of the second insertion plug 31 located outside the reaction tube 1. The second fixing member 32 is detachably fixed to the reaction tube 1. The temperature detection device 33 is fixed on the second insertion plug 31.

[0036] Correspondingly, in this embodiment, the end of the reaction tube 1 with the second opening 14 extends to form a second flange 141, and the second fixing member 32 is detachably connected to the second flange 141 by bolts.

[0037] Specifically, the present invention also includes a heating sleeve 4, which is sleeved on the outer periphery of the reaction tube 1, and forms a closed heating area between the heating sleeve 4 and the reaction tube 1 for heating the reaction tube 1 so that the gas reacts.

[0038] Furthermore, the heating sleeve 4 is provided with a fluid inlet 41 and a fluid outlet 42, which are connected to the heating area. In use, the fluid inlet 41 and the fluid outlet 42 are connected to an external heating device, and a fluid heated by the external device is introduced into the heating area to heat the reaction tube 1 and the gas reaction area within the reaction tube 1.

[0039] Furthermore, the distance between the fluid inlet 41 and the first opening 11 is less than the distance between the fluid outlet 42 and the first opening 11. This arrangement ensures that the fluid flows in from the bottom of the heating sleeve 4 and out from the top, effectively extending the contact time between the fluid and the reaction tube 1, thus guaranteeing the heating effect on the reaction tube 1 and the gas reaction zone within it.

[0040] The beneficial effects of this utility model are:

[0041] This invention includes a reaction tube and a first sealing element. The reaction tube has a first opening at one end. A gas inlet pipe and a gas outlet pipe extend from the side wall of the reaction tube, allowing only gas flow. A gas reaction zone filled with a catalyst and supplying gas for reaction is formed within the reaction tube. The first sealing element is detachably connected to the first opening to restrict the catalyst from being placed directly within the gas reaction zone. The first opening is located at both ends of the reaction tube. In use, gas enters the reaction tube through the gas inlet pipe, directly contacting the catalyst to improve reaction efficiency. The reacted gas exits through the gas outlet pipe. When the catalyst needs to be replaced, simply disconnect the first sealing element from the first opening, empty the catalyst from the reaction tube, add new catalyst, and then reconnect and secure the first sealing element to the first opening. This invention allows for convenient catalyst replacement, solving the problem of inconvenient catalyst replacement in existing technologies.

[0042] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model.

Claims

1. A gas catalytic reactor, characterized in that, include: The reaction tube has a first opening at one end, and a gas inlet pipe and a gas outlet pipe extending from the side wall of the reaction tube for gas flow only. A gas reaction zone for filling the catalyst and supplying gas for reaction is formed inside the reaction tube. A first sealing element is detachably connected to the first opening to seal the gas reaction zone.

2. The gas catalytic reactor as described in claim 1, characterized in that, The first sealing element includes a first insertion plug and a first fixing member. The first insertion plug is at least partially able to extend into the first opening and be press-fitted into the interior of the reaction tube. The first fixing member is fixed to the portion of the first insertion plug located outside the reaction tube and is detachably fixed to the reaction tube.

3. The gas catalytic reactor as described in claim 2, characterized in that, The end of the reaction tube with the first opening extends to form a first flange, and the first fastener is detachably connected to the first flange.

4. The gas catalytic reactor as described in claim 2, characterized in that, The first seal also includes a catalyst support, which is fixed to the portion of the first insert plug that extends into the first opening, and is used to support the catalyst within the reaction tube.

5. The gas catalytic reactor as described in claim 4, characterized in that, The catalyst support includes a vertical rod and a support tray. The vertical rod is vertically arranged, with one end fixed to the first insertion plug. The support tray is fixed to the other end of the vertical rod, and the outer diameter of the support tray matches the inner diameter of the reaction tube.

6. The gas catalytic reactor as described in claim 5, characterized in that, The tray has several vent holes, the diameter of which is smaller than the diameter of the catalyst particles.

7. The gas catalytic reactor as described in claim 1, characterized in that, It also includes a second seal, and a second opening is provided on the other end of the reaction tube. The second seal is detachably connected to the second opening.

8. The gas catalytic reactor as described in claim 7, characterized in that, The second sealing element includes a second insertion plug and a second fixing member. The second insertion plug is at least partially able to extend into the second opening and be press-fitted into the interior of the reaction tube. The second fixing member is fixed to the portion of the second insertion plug located outside the reaction tube. The second fixing member is detachably fixed to the reaction tube. The temperature detection device is fixed to the second insertion plug.

9. The gas catalytic reactor as described in claim 1, characterized in that, It also includes a heating sleeve, which is fitted onto the outer periphery of the reaction tube body, forming a closed heating area between the heating sleeve and the reaction tube body.

10. The gas catalytic reactor as described in claim 9, characterized in that, The heating sleeve has a fluid inlet and a fluid outlet, the fluid inlet and the fluid outlet are connected to the heating area, and the distance between the fluid inlet and the first opening is less than the distance between the fluid outlet and the first opening.

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