F22 activating and recycling structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-03-10
AI Technical Summary
The existing hot nitrogen activation technology in the TFE workshop leads to excessive nitrogen consumption, and F22 is discharged from the freeze dehydrator and silica gel dryer, resulting in resource waste and economic losses.
Design an F22 activation, recycling and reuse structure. The structure is connected by pipes of an F22 vaporizer, a freeze dehydrator, a silica gel dryer, an activation buffer tank and a superheated furnace. The F22 is uniformly heated and vaporized by a stirring and heating mechanism, and impurities are recovered in the activation buffer tank to achieve the reuse of F22.
It reduced production costs, avoided F22 waste, reduced environmental pollution, and achieved stable heating and efficient vaporization of F22.
Smart Images
Figure CN223980092U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical process technology, specifically to an F22 activation, recycling and reuse structure. Background Technology
[0002] In the field of chemical process technology, the recycling and reuse of F22 in the TFE (tetrafluoroethylene) production process is crucial. By reinvesting the recycled F22 into the cracking reaction, this recycling and reuse measure significantly reduces raw material costs from an economic perspective.
[0003] The preparation of TFE requires the high-temperature pyrolysis of F22 to generate TFE. Before F22 enters the superheated furnace, F22 needs to be dehydrated by a silica gel dryer and then further dehydrated by a freeze dehydrator. The silica gel dryer in the TFE workshop is activated every ten days, and the freeze dehydrator in the TFE workshop is activated every day.
[0004] The TFE workshop currently uses hot nitrogen for activation, which consumes too much nitrogen. Furthermore, nitrogen activation will discharge F22 from the inside of the refrigerated dehydrator and silica gel dryer, resulting in a large waste of F22.
[0005] Based on this, the present invention designs an F22 activation, recycling and reuse structure to solve the above problems. Utility Model Content
[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an F22 activation, recycling and reuse structure.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] An F22 activation, recycling, and reuse structure includes an F22 air inlet;
[0009] The F22 air inlet is connected to the F22 vaporizer via a pipe; the F22 vaporizer is connected to the refrigerated dehydrator and the silica gel dryer via pipes respectively; the refrigerated dehydrator and the silica gel dryer are both connected to the activation buffer tank via pipes; the activation buffer tank is connected to the drain outlet for wastewater discharge via a pipe; the activation buffer tank is connected to the superheater via a pipe, and a pressure gauge is fixedly connected to the side wall of the pipe connecting the activation buffer tank and the superheater; the side wall of the refrigerated dehydrator is fixedly connected to a pyrolysis gas inlet and a pyrolysis gas outlet; the side wall of the silica gel dryer is fixedly connected to a pyrolysis gas inlet and a pyrolysis gas outlet.
[0010] Furthermore, the F22 vaporizer includes a tank, an F22 feed pipe, an F22 discharge pipe, an F22 conveying pipe, and a stirring and heating mechanism. The upper end of the tank is fixedly connected to the F22 feed pipe, which is connected to the F22 air inlet via a pipe. The lower end of the tank is fixedly connected to the F22 discharge pipe, which is connected to a freeze dehydrator and a silica gel dryer via pipes. An F22 conveying pipe is provided inside the tank, with its upper end fixedly connected to the F22 feed pipe and its lower end fixedly connected to the F22 discharge pipe. A stirring and heating mechanism for heating the F22 inside the F22 conveying pipe is connected inside the tank.
[0011] Furthermore, the stirring and heating mechanism includes a water bath heating component and a stirring component. The water bath heating component for heating the water inside the tank is connected to the inside of the tank; the stirring component for stirring the water inside the tank is connected to the inside of the tank.
[0012] Furthermore, the water bath heating assembly includes a steam inlet pipe, a steam outlet pipe, and a steam heating pipe. The steam inlet pipe is fixedly connected to the lower right side of the tank body; the steam outlet pipe is fixedly connected to the upper left side of the tank body; a steam heating pipe is fixedly connected inside the tank body; the lower end of the steam heating pipe is fixedly connected to the steam inlet pipe, and the upper end of the steam heating pipe is fixedly connected to the steam outlet pipe.
[0013] Furthermore, the stirring assembly includes a motor, a drive rod, a telescopic rod, a mounting plate, a rotating shaft, a transmission assembly, a rotating rod, a driven rod, a connecting rod, and stirring blades. The motor is fixedly connected to the upper end of the tank; the drive rod is fixedly connected to the output end of the motor; the upper end of the telescopic rod is slidably connected to the drive rod via a spline; a mounting plate is fixedly connected to the top of the tank; a rotating shaft is rotatably connected to the side wall of the mounting plate; the right end of the rotating shaft is connected to the drive rod via a transmission assembly; one end of the rotating rod is fixedly connected to the left end of the rotating shaft, and the other end of the rotating rod is rotatably connected to the upper end of the driven rod; one end of the connecting rod is rotatably connected to the lower end of the driven rod; the other end of the connecting rod is fixedly connected to the side wall of the telescopic rod; multiple sets of stirring blades are fixedly connected to the side wall of the telescopic rod.
[0014] Furthermore, the sidewall of the telescopic rod is connected in a uniform linear array with multiple sets of stirring blades; the multiple stirring blades in each set of stirring blades are arranged in a uniform circumferential array.
[0015] Furthermore, the transmission assembly can adopt a bevel gear transmission structure, which includes a first bevel gear and a second bevel gear. The first bevel gear is fixedly connected to the side wall of the drive rod; the second bevel gear is fixedly connected to the rotating shaft; and the first bevel gear and the second bevel gear are meshed together.
[0016] Furthermore, both the steam heating pipe and the F22 conveying pipe are spiral pipes.
[0017] Compared with the prior art, the advantages of this utility model are as follows: water is placed inside the tank, and liquid F22 enters the F22 conveying pipe through the F22 feed pipe and finally flows to the F22 discharge pipe. The F22 inside the F22 conveying pipe is heated by the stirring and heating mechanism to achieve stirring and heating of F22, avoid uneven heating or local overheating of F22, and make the heating of F22 more stable. Liquid F22 turns into gaseous F22, realizing the vaporization of F22. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0019] Figure 1 This is a pipeline diagram of an F22 activation, recycling, and reuse structure according to this utility model;
[0020] Figure 2 This utility model provides a three-dimensional F22 activation, recycling, and reuse structure. Figure 1 ;
[0021] Figure 3 This is a front view of an F22 activation, recycling, and reuse structure according to this utility model;
[0022] Figure 4 This utility model provides a three-dimensional F22 activation, recycling, and reuse structure. Figure 2 ;
[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle;
[0024] Figure 6 This utility model provides a three-dimensional F22 activation, recycling, and reuse structure. Figure 3 .
[0025] The labels in the diagram represent:
[0026] 11. F22 air inlet; 2. F22 vaporizer; 3. Refrigerated dehydrator; 31. Pyrolysis gas inlet 1; 32. Pyrolysis gas outlet 1; 4. Silica gel dryer; 41. Pyrolysis gas inlet 2; 42. Pyrolysis gas outlet 2; 5. Activation buffer tank; 51. Drain; 6. Pressure gauge; 7. Superheater; 80. Tank body; 81. F22 feed pipe; 82. F22 discharge pipe; 83. F22 conveying pipe; 9. Stirring and heating mechanism; 21. Steam inlet pipe; 22. Steam outlet pipe; 23. Steam heating pipe; 921. Motor; 922. Drive rod; 923. Telescopic rod; 924. Mounting plate; 925. Rotating shaft; 9261. Bevel gear 1; 9262. Bevel gear 2; 927. Rotating rod; 928. Driven rod; 929. Connecting rod; 930. Stirring blade. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0028] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.
[0029] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-6 An F22 activation, recycling and reuse structure includes an F22 air inlet 11;
[0030] The F22 air inlet 11 is connected to the F22 vaporizer 2 via a pipe; the F22 vaporizer 2 is connected to the freeze dehydrator 3 and the silica gel dryer 4 via pipes respectively; the freeze dehydrator 3 and the silica gel dryer 4 are both connected to the activation buffer tank 5 via pipes; the activation buffer tank 5 is connected to the drain outlet 51 for sewage discharge via a pipe; the activation buffer tank 5 is connected to the superheater 7 via a pipe, and a pressure gauge 6 is fixedly connected to the side wall of the pipe connecting the activation buffer tank 5 and the superheater 7; the side wall of the freeze dehydrator 3 is fixedly connected to the pyrolysis gas inlet 31 and the pyrolysis gas outlet 32; the side wall of the silica gel dryer 4 is fixedly connected to the pyrolysis gas inlet 41 and the pyrolysis gas outlet 42.
[0031] In this invention, liquid F22 enters the inside of F22 vaporizer 2 through a pipeline. Simultaneously, F22 vaporizer 2 heats the F22 entering the inside of F22 vaporizer 2, causing F22 to vaporize. The heated and vaporized F22 then enters the inside of freeze dehydrator 3 and silica gel dryer 4 to activate them. The F22 inside freeze dehydrator 3 and silica gel dryer 4 both enter the inside of activation buffer tank 5 through pipelines. Activation buffer tank 5 discharges impurities contained in F22 to drain outlet 51 through pipelines. Furthermore, activation buffer tank 5 transports F22 to superheated furnace 7 through pipelines for heating and pyrolysis, thus recycling and reusing the F22 used for activation, thereby reducing production costs and avoiding environmental pollution caused by F22.
[0032] The F22 vaporizer 2 includes a tank 80, an F22 feed pipe 81, an F22 discharge pipe 82, an F22 conveying pipe 83, and a stirring and heating mechanism 9. The upper end of the tank 80 is fixedly connected to the F22 feed pipe 81, which is connected to the F22 air inlet 11 via a pipe. The lower end of the tank 80 is fixedly connected to the F22 discharge pipe 82, which is connected to the freeze dehydrator 3 and the silica gel dryer 4 via pipes. The F22 conveying pipe 83 is provided inside the tank 80. The upper end of the F22 conveying pipe 83 is fixedly connected to the F22 feed pipe 81, and the lower end of the F22 conveying pipe 83 is fixedly connected to the F22 discharge pipe 82. The stirring and heating mechanism 9 is connected inside the tank 80 to heat the F22 inside the F22 conveying pipe 83.
[0033] In this invention, water is placed inside the tank 80. Liquid F22 enters the F22 conveying pipe 83 through the F22 inlet pipe 81 and finally flows to the F22 outlet pipe 82. The F22 inside the F22 conveying pipe 83 is heated by the stirring and heating mechanism 9 to achieve stirring and heating of F22, avoid uneven heating or local overheating of F22, and make the heating of F22 more stable. Liquid F22 turns into gaseous F22, realizing the vaporization of F22.
[0034] The stirring and heating mechanism 9 includes a water bath heating component and a stirring component. The water bath heating component for heating the water inside the tank 80 is connected to the inside of the tank 80; the stirring component for stirring the water inside the tank 80 is connected to the inside of the tank 80.
[0035] The water bath heating assembly includes a steam inlet pipe 21, a steam outlet pipe 22, and a steam heating pipe 23. The steam inlet pipe 21 is fixedly connected to the lower right side of the tank body 80; the steam outlet pipe 22 is fixedly connected to the upper left side of the tank body 80; the steam heating pipe 23 is fixedly connected inside the tank body 80; the lower end of the steam heating pipe 23 is fixedly connected to the steam inlet pipe 21, and the upper end of the steam heating pipe 23 is fixedly connected to the steam outlet pipe 22; both the steam heating pipe 23 and the F22 conveying pipe 83 are spiral pipes.
[0036] The stirring assembly includes a motor 921, a drive rod 922, a telescopic rod 923, a mounting plate 924, a rotating shaft 925, a transmission assembly, a rotating rod 927, a driven rod 928, a connecting rod 929, and a stirring blade 930. The motor 921 is fixedly connected to the upper end of the tank 80; the drive rod 922 is fixedly connected to the output end of the motor 921; the upper end of the telescopic rod 923 is slidably connected to the drive rod 922 via a spline; the mounting plate 924 is fixedly connected to the top of the tank 80; the rotating shaft 925 is rotatably connected to the side wall of the mounting plate 924. 5; The right end of the rotating shaft 925 is connected to the drive rod 922 via a transmission assembly; one end of the rotating rod 927 is fixedly connected to the left end of the rotating shaft 925, and the other end of the rotating rod 927 is rotatably connected to the upper end of the driven rod 928; one end of the connecting rod 929 is rotatably connected to the lower end of the driven rod 928; the other end of the connecting rod 929 is fixedly connected to the side wall of the telescopic rod 923; multiple sets of stirring blades 930 are fixedly connected to the side wall of the telescopic rod 923 in a uniform linear array; the multiple stirring blades 930 of each set of stirring blades 930 are arranged in a uniform circumferential array.
[0037] The transmission assembly can adopt a bevel gear transmission structure, which includes a first bevel gear 9261 and a second bevel gear 9262. The first bevel gear 9261 is fixedly connected to the side wall of the drive rod 922; the second bevel gear 9262 is fixedly connected to the rotating shaft 925; and the first bevel gear 9261 and the second bevel gear 9262 are meshed together.
[0038] In this invention, high-temperature steam enters the steam heating pipe 23 through the steam inlet pipe 21 and finally flows to the steam outlet pipe 22. Through heat conduction, it heats the water inside the tank 80, thereby providing water bath heating for the F22 inside the F22 conveying pipe 83. Simultaneously, the output of the motor 921 drives the drive rod 922, which in turn drives the telescopic rod 923 to rotate via a spline. The telescopic rod 923 then drives the stirring blades 930 to rotate, achieving rotational stirring of the water inside the tank 80. Simultaneously, the drive rod 922 drives the bevel gear 9261, which in turn... 9262 drives the rotating rod 927 to rotate; the rotating rod 927 drives the driven rod 928 to drive the telescopic rod 923 to move back and forth under the limiting action of the driving rod 922 through the connecting rod 929. The telescopic rod 923 drives the stirring fan blade 930 to move up and down in the vertical direction, simultaneously realizing the up and down stirring of the water inside the tank 80. At the same time, the stirring of the water inside the tank 80 makes the heating of F22 inside the F22 conveying pipe 83 more uniform, avoiding uneven heating or local overheating of F22, and thus making the heating of F22 more stable.
[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A F22 activation recycling structure, comprising a F22 gas inlet (11), characterized in that, Also includes F22 vaporizer (2), freeze dehydrator (3), silica gel dryer (4), activated buffer tank (5), pressure gauge (6) and superheater (7); The F22 gas inlet (11) is communicated with the F22 vaporizer (2) through a pipeline; the F22 vaporizer (2) is communicated with the freeze dehydrator (3) and the silica gel dryer (4) respectively through a pipeline; the freeze dehydrator (3) and the silica gel dryer (4) are communicated with the activated buffer tank (5) through a pipeline; the activated buffer tank (5) is communicated with the blowdown outlet (51) for blowdown through a pipeline; the activated buffer tank (5) is communicated with the superheater (7) through a pipeline, and the sidewall of the pipeline connecting the activated buffer tank (5) and the superheater (7) is fixedly connected with the pressure gauge (6); the sidewall of the freeze dehydrator (3) is fixedly connected with the cracking gas inlet one (31) and the cracking gas outlet one (32); the sidewall of the silica gel dryer (4) is fixedly connected with the cracking gas inlet two (41) and the cracking gas outlet two (42).
2. The F22 activation recycling structure according to claim 1, wherein, The F22 vaporizer (2) comprises a tank body (80), an F22 feeding pipeline (81), an F22 discharging pipeline (82), an F22 conveying pipeline (83) and a stirring and heating mechanism (9), the tank body (80) is fixedly connected with the F22 feeding pipeline (81) at the upper end, and the F22 feeding pipeline (81) is communicated with the F22 gas inlet (11) through a pipeline; the tank body (80) is fixedly connected with the F22 discharging pipeline (82) at the lower end, and the F22 discharging pipeline (82) is communicated with the freeze dehydrator (3) and the silica gel dryer (4) respectively through a pipeline; the inner side of the tank body (80) is provided with the F22 conveying pipeline (83), the upper end of the F22 conveying pipeline (83) is fixedly connected with the F22 feeding pipeline (81), and the lower end of the F22 conveying pipeline (83) is fixedly connected with the F22 discharging pipeline (82); the inner side of the tank body (80) is connected with the stirring and heating mechanism (9) for heating the F22 in the F22 conveying pipeline (83).
3. The F22 activation recycling structure according to claim 2, wherein, The stirring and heating mechanism (9) comprises a water bath heating assembly and a stirring assembly, the water bath heating assembly for heating water in the inner side of the tank body (80) is connected to the inner side of the tank body (80); the stirring assembly for stirring water in the inner side of the tank body (80) is connected to the inner side of the tank body (80).
4. The F22 activation recycling structure according to claim 3, wherein, The water bath heating assembly comprises a steam inlet pipeline (21), a steam outlet pipeline (22) and a steam heating pipeline (23), the steam inlet pipeline (21) is fixedly connected to the right end of the lower side of the tank body (80); the steam outlet pipeline (22) is fixedly connected to the left end of the upper side of the tank body (80); the steam heating pipeline (23) is fixedly connected inside the tank body (80); the lower end of the steam heating pipeline (23) is fixedly connected with the steam inlet pipeline (21), and the upper end of the steam heating pipeline (23) is fixedly connected with the steam outlet pipeline (22).
5. The F22 activation recycling structure according to claim 3, wherein, The stirring assembly comprises a motor (921), a driving rod (922), an extension rod (923), a mounting plate (924), a rotating shaft (925), a transmission assembly, a rotating rod (927), a driven rod (928), a connecting rod (929) and stirring blades (930), the motor (921) is fixedly connected to the upper end of the tank body (80); the driving rod (922) is fixedly connected to the output end of the motor (921); the upper end of the extension rod (923) is limitingly and slidingly connected to the driving rod (922) through a spline; the mounting plate (924) is fixedly connected to the top of the tank body (80); the rotating shaft (925) is rotatably connected to the side wall of the mounting plate (924); the right end of the rotating shaft (925) is drivingly connected to the driving rod (922) through the transmission assembly; one end of the rotating rod (927) is fixedly connected to the left end of the rotating shaft (925), and the other end of the rotating rod (927) is rotatably connected to the upper end of the driven rod (928); one end of the connecting rod (929) is rotatably connected to the lower end of the driven rod (928); the other end of the connecting rod (929) is fixedly connected to the side wall of the extension rod (923); a plurality of groups of the stirring blades (930) are fixedly connected to the side wall of the extension rod (923).
6. The F22 activation recycling structure of claim 5, wherein, The side wall of the extension rod (923) is uniformly and linearly arrayed with a plurality of groups of the stirring blades (930); the plurality of stirring blades (930) of each group of the stirring blades (930) are uniformly and circumferentially arrayed.
7. The F22 activation recycling structure of claim 5, wherein, The transmission assembly can adopt a bevel gear transmission structure, and comprises a bevel gear one (9261) and a bevel gear two (9262), the bevel gear one (9261) is fixedly connected to the side wall of the driving rod (922); the bevel gear two (9262) is fixedly connected to the rotating shaft (925); the bevel gear one (9261) is meshingly connected to the bevel gear two (9262).
8. The F22 activation recycling structure of claim 4, wherein, The steam heating pipeline (23) and the F22 conveying pipeline (83) are both spiral pipelines.