Process for the removal of organic fluorides from natural gas based on catalytic hydrolysis

Abstract

The present application relates to the field of organic fluorine removal, and particularly relates to a natural gas organic fluorine removal process based on catalytic hydrolysis, which adopts an organic fluorine removal equipment, the organic fluorine removal equipment comprises a reaction kettle, and a reactor for guiding organic fluorine to contact with water vapor for reaction is arranged at the reaction kettle; the present application heats and warms the water vapor in advance, guides the heated and warmed water vapor to preheat the catalyst and freon introduced into a mixing bin, and then guides the water vapor and freon continuously input into the mixing bin to form a pre-vortex effect through the cooperation of two conveying pipelines and a vortex pipe, so that the water vapor, the catalyst and the freon are rapidly contacted and mixed, the common warming efficiency of the water vapor and the freon in the mixing bin is improved, and the temperature of the freon and the water vapor is uniformly distributed in the mixing bin.

Description

Technical Field

[0001] This invention relates to the field of organofluorine removal, and particularly to a process for removing organofluorine from natural gas based on catalytic hydrolysis. Background Technology

[0002] Natural gas, as a clean energy source, occupies an important position in the global energy structure. However, natural gas often contains organic fluorides such as Freon, which can adversely affect subsequent processing and utilization of natural gas, for example, by corroding equipment and affecting catalyst performance. Meanwhile, with increasingly stringent environmental protection requirements, the emission and content limits for organic fluorides in natural gas are becoming increasingly strict. Therefore, there is an urgent need to develop an efficient removal process for organic fluorides in natural gas.

[0003] With the advancement of technology, technicians in related fields have optimized the technical means for removing organofluorine compounds from natural gas. For a more accurate comparison, Chinese patent CN102895868A discloses a method and equipment for catalytic hydrolysis of Freon. Following the direction of Freon and water vapor flow, the equipment includes a three-way pipe, a U-shaped reactor, a heat exchanger, and an absorption device. The three-way pipe connects to the U-shaped reactor, which consists of two sections. The outlet of the U-shaped reactor is connected to the heat exchanger, and the outlet of the heat exchanger is connected to the absorption device. In use, aluminum sulfate, aluminum phosphate, and ferric phosphate are dried and dehydrated, mixed evenly, and then loaded into the two sections of the U-shaped reactor. Simultaneously, the flow rates of the Freon gas and water vapor are controlled to ensure a contact time of 3-5 minutes between the Freon gas and water vapor and the catalyst. The reactants are then sequentially absorbed by the absorption device. The equipment has a simple structure, low cost, and high decomposition and absorption efficiency.

[0004] However, when using the above-mentioned equipment to remove Freon from natural gas by catalytic hydrolysis, the following problems still exist:

[0005] The aforementioned equipment, arranged sequentially according to the direction of Freon and steam flow, consists of a three-way pipe, a U-shaped reactor, a heat exchanger, and several absorption towers. This allows Freon and steam to enter the U-shaped reactor through the three-way pipe and both heat up together before passing through the heat exchanger and absorption towers. This achieves the catalytic hydrolysis of Freon and the absorption of byproducts. However, due to the significant difference in heat capacity between Freon and steam, their heating rates differ considerably under the same heating conditions (typically, Freon's heating rate is greater than that of steam). At higher Freon temperatures, incomplete decomposition is likely, and uneven temperatures between Freon and steam can lead to unexpected or unnecessary reaction byproducts, increasing the processing burden.

[0006] Therefore, based on the above-mentioned viewpoints, there is still room for improvement in existing technologies for removing organofluorine compounds from natural gas. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a natural gas organofluorine removal process based on catalytic hydrolysis. This removal process employs organofluorine removal equipment comprising a reaction vessel, a reactor at which the organofluorine compounds are brought into contact with water vapor for reaction, and a regulator corresponding to the reactor at the reaction vessel to provide necessary reaction conditions (such as temperature) during the catalytic hydrolysis process.

[0008] The removal of organic fluorides from natural gas using this organic fluoride removal equipment includes the following steps:

[0009] S1. Water vapor and catalyst are pre-introduced into the reactor, and the water vapor is heated by a regulator to guide the heated water vapor into the reactor to heat the catalyst.

[0010] S2. While heating the water vapor through the regulator, the heated water vapor is guided to preheat the organic fluoride that needs to be hydrolyzed.

[0011] S3. During the process of introducing water vapor and organic fluoride into the reactor for reaction, the reactor guides the heated water vapor, preheated catalyst and Freon to make efficient contact and mix, and together raise the temperature to the required reaction temperature.

[0012] S4. After the hydrolysis reaction is completed, guide the reaction byproducts out of the reactor for subsequent processing.

[0013] Preferably, the reactor includes a mixing chamber located within the reaction vessel, and the mixing chamber is connected to two conveying pipelines. Both conveying pipelines extend outward through the reaction vessel and are used to guide water vapor and Freon to the mixing chamber for reaction, respectively. Either of the two conveying pipelines is connected to a regulator.

[0014] Preferably, one end of the conveying pipeline located inside the mixing chamber is also connected to a vortex tube, with the two vortex tubes rotating in the same direction and their openings distributed at intervals on both sides of the mixing chamber.

[0015] Preferably, a sealing block is fixed at the end of the vortex tube away from the connected conveying pipeline, and a plurality of perforations are evenly opened on the sealing block.

[0016] Preferably, the two vortex tubes are arranged concentrically and inserted together.

[0017] Preferably, the regulator includes several bent conduits that are circumferentially connected to the mixing chamber. After exiting the mixing chamber, the several bent conduits are all attached to the outer wall of the mixing chamber and are connected to a gas guide pipe located on the lower side of the mixing chamber. A heat exchanger corresponding to one of the conveying pipes is installed on the reactor.

[0018] Preferably, the air guide pipe is connected to a preheating pipe that is spirally wound around the outside of one of the delivery pipes.

[0019] Preferably, the sliding limiter in the mixing chamber is a sliding plate sleeved on one of the conveying pipelines. The sliding plate is provided with sliding push rods corresponding to several bent guide tubes. After the several sliding push rods slide out of the corresponding bent guide tubes, they are connected to a linkage plate. Several adjusting springs are provided between the linkage plate and the reaction vessel.

[0020] Preferably, the reactor is fixed with a mounting baffle located below the gas guide pipe, and a recovery chamber is formed between the mounting baffle and the inner bottom wall of the reactor.

[0021] Preferably, the preheating pipe extends through the mounting partition into the recovery chamber.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] I. This invention preheats water vapor to a higher temperature and guides the heated water vapor to preheat the catalyst and Freon introduced into the mixing chamber. Then, through the cooperation of two delivery pipelines and a vortex tube, the water vapor and Freon continuously input into the mixing chamber are guided to form a pre-vortex effect, realizing rapid contact and mixing of water vapor, catalyst and Freon. This improves the efficiency of the water vapor and Freon heating together in the mixing chamber, while guiding the Freon and water vapor to a uniform temperature distribution in the mixing chamber, shortening the reaction time, improving the reaction efficiency, and avoiding the generation of unnecessary reaction by-products.

[0024] Second, this invention, through the cooperation of components such as the mixing chamber, the bent conduit, and the gas guide pipe, guides the heated gas flow injected into the mixing chamber to disperse into the bent conduit and gas guide pipe attached to the outside of the mixing chamber. Through the combined effect of the continuous introduction of heated gas flow into the mixing chamber and the heated gas flow that escapes into the bent conduit and gas guide pipe, the required reaction temperature conditions are quickly formed in the mixing chamber, thereby improving the hydrolysis effect of Freon. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a process flow diagram of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the device of the present invention.

[0028] Figure 3 This is a cross-sectional view of the reactor of the present invention.

[0029] Figure 4 This is a schematic diagram of the reactor structure of the present invention.

[0030] Figure 5 This is a schematic diagram of the mixing chamber of the present invention.

[0031] Figure 6 This is a schematic diagram of the vortex tube structure of the present invention.

[0032] Figure 7 This is a schematic diagram of the regulator of the present invention.

[0033] Figure 8 This is a schematic diagram of the structure of the partition plate of the present invention.

[0034] Figure 9 This is a schematic diagram of the structure of the bent conduit of the present invention.

[0035] Figure 10 This is the present invention. Figure 9 A magnified view of A in the middle.

[0036] In the diagram, 1 is the reaction vessel; 2 is the reactor; 20 is the mixing chamber; 21 is the delivery pipeline; 22 is the vortex tube; 23 is the sealing block; 230 is the perforation; 3 is the regulator; 30 is the bent conduit; 31 is the gas guide pipe; 32 is the heat exchanger; 33 is the preheating pipe; 34 is the sliding plate; 35 is the sliding push rod; 36 is the linkage plate; 37 is the adjusting spring; 4 is the mounting partition; 40 is the limit sleeve; 41 is the sealing block; 42 is the driven gear; 43 is the drive gear ring; and 44 is the drive rotating rod. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 To be continued Figure 10 The embodiments of the present invention will be described in detail below.

[0038] This application discloses a natural gas organic fluoride removal process based on catalytic hydrolysis. This application is mainly used in the process of removing and recycling organic fluorides from natural gas. In terms of technical effect, it effectively removes organic fluorides from natural gas through catalytic hydrolysis. In particular, during the removal process, this application further guides Freon, water vapor and catalyst to contact and mix efficiently in the mixing chamber through the cooperation between two delivery pipelines and vortex tubes, thereby improving the overall defluorination efficiency and defluorination effect.

[0039] Example 1: Refer to Figures 1 to 3As shown, the natural gas organic fluoride removal process based on catalytic hydrolysis adopts the following organic fluoride removal equipment, which includes a reaction vessel 1, a reactor 2 for guiding the organic fluoride to react with water vapor, and a regulator 3 for providing the necessary reaction conditions (such as temperature) during the catalytic hydrolysis process.

[0040] In use, water vapor and organic fluoride are introduced into reactor 1 respectively, and the water vapor and organic fluoride are guided to fully contact and react through reactor 2. At the same time, a catalyst is introduced into it to improve the efficiency of catalytic hydrolysis of organic fluoride. The regulator 3 outputs appropriate temperature reaction conditions to promote the efficient hydrolysis of organic fluoride into other substances that are easy to process or recycle.

[0041] It should be noted that the organofluorine compounds described in this application are mainly conventional Freon (Freon-12).

[0042] Reference Figure 3 and Figure 4 As shown, reactor 2 is used to guide the reaction of organofluorine compounds with water vapor. Specifically, reactor 2 includes a mixing chamber 20 located within reactor 1. The mixing chamber 20 is hollow and connected to two conveying pipes 21. Both conveying pipes 21 extend outward from reactor 1 and are used to guide water vapor and Freon to be conveyed into the mixing chamber 20 for reaction. Either of the two conveying pipes 21 is connected to regulator 3. Generally, for the catalytic hydrolysis reaction of Freon, the mass of water vapor required in the process is greater than the mass of Freon required. Therefore, regulator 3 is preferably connected to one of the conveying pipes 21 that conveys water vapor. The two conveying pipes 21 are preferably located at both ends of the mixing chamber 20 in the axial direction.

[0043] During use, as water vapor and Freon are transported to the mixing chamber 20 through two delivery pipes 21, the water vapor (Freon) tends to continue to flow upward (downward) along the delivery pipes 21. Due to their gaseous nature, the water vapor and Freon naturally diffuse into the remaining space inside the mixing chamber 20 after being transported to the mixing chamber 20, filling the internal space of the mixing chamber 20. This allows the water vapor and Freon to initially contact and react within the mixing chamber 20. During this process, the water vapor in one of the delivery pipes 21 is heated by the regulator 3. After the heated water vapor enters the mixing chamber 20, it naturally exchanges heat with the lower-temperature Freon, achieving a common heating process for both water vapor and Freon to reach the required reaction temperature conditions.

[0044] Reference Figures 3 to 6As shown, one end of the conveying pipeline 21 located inside the mixing chamber 20 is also connected to a vortex tube 22. The two vortex tubes 22 rotate in the same direction, and the other opening of the vortex tube 22 is relatively spaced away from the other opening of the connected conveying pipeline 21 on both sides of the mixing chamber 20 (that is, the opening end of one vortex tube 22 is deflected relative to the opening end of the other vortex tube 22 by a certain degree). In this embodiment, both vortex tubes 22 rotate clockwise, and the radial angle between the two openings is 180 degrees on both sides of the mixing chamber 20.

[0045] During use, as water vapor (Freon) is transported to the mixing chamber 20 through the delivery pipe 21 and the vortex tube 22, the vortex structure of the vortex tube 22 causes the water vapor (Freon) transported by the vortex tube 22 to have a tendency to swirl within the mixing chamber 20 in the initial stage of entering the mixing chamber 20. This causes the water vapor (Freon) transported to the mixing chamber 20 to quickly dissipate and fill the internal space of the mixing chamber 20. As water vapor and Freon are continuously input and swirled in the two subsequent vortex tubes 22, a pre-vortex effect of water vapor and Freon is gradually formed in the mixing chamber 20. This promotes the rapid contact and mixing of water vapor and Freon in the mixing chamber 20, avoiding the problem of excessive accumulation of water vapor (Freon) in a certain place in the mixing chamber 20, and ensuring that water vapor and Freon contact and mix quickly and fully and evenly.

[0046] Furthermore, referring to Figure 5 and Figure 6 As shown, in order to improve the contact and mixing efficiency of water vapor and Freon in the mixing chamber 20, a sealing block 23 is fixed at the end of the vortex tube 22 away from the connected conveying pipeline 21. The sealing block 23 seals the opening of the vortex tube 22, causing the water vapor (Freon) in the vortex tube 22 to be temporarily slowed down at the opening. The water vapor (Freon) input into the vortex tube 22 still has a tendency to be transported forward along the vortex tube 22. Therefore, several perforations 230 are evenly opened on the sealing block 23 to connect the vortex tube 22 with the mixing chamber 20. A number of perforations 230 are evenly distributed on a circumferential surface centered on the center of the pipe opening. Since the diameter of the perforations 230 is smaller than the diameter of the vortex tube 22, the water vapor (Freon) that is slow at the opening of the vortex tube 22 and has a tendency to continue to be transported forward along the vortex tube 22 will be injected into the mixing chamber 20 through the perforations 230. This allows the water vapor (Freon) to have a certain initial acceleration when it enters the mixing chamber 20, so that the water vapor and Freon can quickly escape and fill the interior of the mixing chamber 20, thereby improving the contact and mixing efficiency of the water vapor and Freon.

[0047] Reference Figure 5 and Figure 6As shown, the two vortex tubes 22 are concentrically arranged and have the same diameter. Initially, the two vortex tubes 22 are driven to be inserted into each other in adjacent pitches, so that the two vortex tubes 22 are tightly attached to each other along their spiral paths. In use, after the two vortex tubes 22 are matched, the catalyst to be used (the catalyst is a conventional metal oxide catalyst, such as alumina, magnesium oxide and zirconium oxide) is pre-introduced into the mixing chamber 20 through an external pipeline that runs through the mixing chamber 20 and the reactor 1. After Freon and high-temperature water vapor are also introduced into the mixing chamber 20, Freon is hydrolyzed under the action of the catalyst to generate hydrogen chloride, hydrogen fluoride and carbon dioxide, which are released into the mixing chamber.

[0048] As an optional implementation, the catalyst to be used can be directly transported to the upper side of the two vortex tubes 22 after they are inserted through an external pipeline, so that the catalyst can be spread on the two vortex tubes 22, further increasing the contact efficiency between water vapor and Freon and the catalyst.

[0049] Reference Figures 7 to 9 As shown, the regulator 3 is used to provide the necessary reaction conditions (such as temperature) during the catalytic hydrolysis process. Specifically, the regulator 3 includes several bent conduits 30 that are circumferentially connected to the mixing chamber 20. The bent conduits 30 extend from the upper end of the mixing chamber 20, bend downward to the lower end of the mixing chamber 20, and then bend again to the side close to the mixing chamber 20. After the several bent conduits 30 pass through the mixing chamber 20, they all abut against the outer wall of the mixing chamber 20. The other end of the several bent conduits 30 is connected to a gas guide pipe 31 located on the lower side of the mixing chamber 20. All the bent conduits 30 and one of the output pipes are connected to a mounting panel fixed on the inner wall of the reactor 1. A heat exchanger 32 is installed on the reactor 1 and is connected to one of the conveying pipes 21 (conveying water vapor).

[0050] It should be noted that when the medium to be transported in the transport pipeline 21 is transported to the heat exchanger 32, the operation of the heat exchanger 32 causes a temperature difference change inside it, and generates a heat exchange effect with the medium in the transport pipeline 21, causing the medium in the transport pipeline 21 to change temperature in order to reach the required temperature conditions.

[0051] In use, the water vapor in the connected conveying pipeline 21 is heated by the heat exchanger 32 and then introduced into the mixing chamber 20. After entering the mixing chamber 20, the water vapor will first dissipate and fill the internal space of the mixing chamber 20, and then simultaneously enter the gas guide pipe 31 along the bent conduit 30. The heated water vapor will simultaneously exchange heat with the outer wall of the mixing chamber 20 while being conveyed along the bent conduit 30, so that the mixing chamber 20 has a simultaneous heating effect inside and outside, thereby increasing the rate of temperature rise inside the mixing chamber 20 so as to quickly reach the required reaction temperature.

[0052] Furthermore, refer to Figures 7 to 9 As shown, to improve the efficiency of catalytic hydrolysis of Freon, a preheating pipe 33 is connected to the gas delivery pipe 31, which is spirally wound around the outside of one of the delivery pipes 21 (used for transporting Freon). In use, after water vapor escapes into the bent conduit 30 and the gas delivery pipe 31, it exchanges heat with the bent conduit 30 and the gas delivery pipe 31. After all the water vapor in the bent conduit 30 has accumulated in the gas delivery pipe 31, the heat of the water vapor also accumulates in the gas delivery pipe 31 and the preheating pipe 33. At this time, during the process of transporting Freon to the mixing chamber 20 through another delivery pipe 21, the preheating pipe 33 wound around the outside of the delivery pipe 21 will transfer the heat of the high-temperature water vapor accumulated inside to the Freon in the delivery pipe 21, thus preheating the Freon in the delivery pipe 21.

[0053] After the Freon enters the vortex tube 22 through the connected delivery pipeline 21, due to the corresponding cooperation of the two vortex tubes 22, the heat in one of the vortex tubes 22 that delivers high-temperature water vapor is also transferred to the Freon in the other vortex tube 22 through the direct contact between the two vortex tubes 22, thus heating the Freon. Since both vortex tubes 22 are located in the mixing chamber 20, after the high-temperature water vapor accumulates in the mixing chamber 20, its heat is also transferred to the vortex tube 22 at the same time, so that the Freon in the vortex tube 22 can be further heated.

[0054] Reference Figures 7 to 9 As shown, a sliding plate 34 is sleeved on one of the conveying pipes 21 and is used for sliding limit in the mixing chamber 20. Sliding push rods 35 are provided on the sliding plate 34 corresponding to several bent conduits 30. Several sliding push rods 35 slide out of the corresponding bent conduits 30 and are connected to a linkage plate 36. Several adjusting springs 37 are provided between the linkage plate 36 and the reactor 1.

[0055] During use, after being heated, water vapor is continuously input into the mixing chamber 20 and accumulates there. As the water vapor continuously dissipates and fills the mixing chamber 20, the temperature and pressure within it rise accordingly. When the pressure of the water vapor acting on the sliding plate 34 approaches the elastic resistance of the adjusting spring 37 against the linkage plate 36, several sliding push rods 35, and the sliding plate 34, Freon is then introduced into the mixing chamber 20 through another delivery pipe 21. This is because both water vapor and Freon are injected into the mixing chamber 20 through the vortex tube 22, and the mixing chamber 20 contains... Since the mass of Freon is lower than that of water vapor, Freon tends to gradually diffuse and mix evenly with water vapor. During this process, the mass of Freon stored in different parts of the mixing chamber 20 is different, which causes a certain degree of pressure fluctuation effect in the mixing chamber 20 (a floating increase effect tending towards increased pressure). The increase in pressure fluctuation and the elastic resistance of the adjusting spring 37 form an elastic resistance effect, driving the sliding plate 34 to slide back and forth on the mixing chamber 20 (the whole tends to move upward), so as to accelerate the contact and mixing of high-temperature water vapor and Freon in the mixing chamber 20.

[0056] Once the pressure inside the mixing chamber 20 rises steadily to a level greater than the elastic resistance of the adjusting spring 37 to the linkage plate 36, several sliding push rods 35, and sliding plate 34, the sliding plate 34, sliding push rods 35, and linkage plate 36 are driven to move upward, and the adjusting spring 37 is compressed. After the sliding plate 34 moves upward along the connected conveying pipeline 21 and comes into contact with the upper interior of the mixing chamber 20, the opening of the bent conduit 30 connected to the mixing chamber 20 is sealed to maintain a stable rise in pressure inside the mixing chamber 20.

[0057] In another implementation, high-temperature steam is continuously introduced into the mixing chamber 20. The steam escapes into the mixing chamber 20 and the pressure acting on the sliding plate 34 overcomes the elastic resistance of the adjusting spring 37, thus pushing the sliding plate 34 upward. During this process, the high-temperature steam introduced into the mixing chamber 20 also escapes into the bent conduit 30 and the air guide pipe 31, forming a preheating effect on the other conveying pipe 21. After sealing the pipe opening connecting the bent conduit 30 and the mixing chamber 20, Freon is then conveyed into the mixing chamber 20 through the conveying pipe, driving the steam and Freon to mix evenly in the mixing chamber 20. In this implementation, the steam and Freon can be driven to heat up and exchange heat in a relatively stable rising pressure environment.

[0058] Reference Figure 8As shown, a mounting baffle 4 is fixed inside the reactor 1, located below the gas guide pipe 31. A recovery chamber is formed between the mounting baffle 4 and the inner bottom wall of the reactor 1. An alkaline aqueous solution (preferably sodium hydroxide or potassium hydroxide, etc.) is injected into the recovery chamber to remove the acid mist (hydrogen fluoride and hydrogen chloride) after the hydrolysis of Freon.

[0059] Furthermore, referring to Figure 7 and Figure 8 As shown, in order to improve the absorption effect of acid mist and avoid the escape and re-vaporization of unreacted acid mist, the preheating pipe 33 extends spirally into the recovery chamber. After the alkaline aqueous solution (such as sodium hydroxide, potassium hydroxide, etc.) is injected into the recovery chamber, the extended section of the preheating pipe 33 will be submerged in it. After the Freon in the mixing chamber 20 is hydrolyzed, the sliding plate 34 and the sliding push rod 35 are driven to move down to release the seal on the bent conduit 30. The hydrolyzed hydrogen chloride, hydrogen fluoride and carbon dioxide are driven to be injected into the recovery chamber through the bent conduit 30, the gas guide pipe 31 and the preheating pipe 33. After the hydrogen chloride, hydrogen fluoride and carbon dioxide are discharged through the preheating pipe 33, they will directly contact the alkaline aqueous solution and then react to generate inorganic salts of chlorine and fluorine as well as carbonates.

[0060] It should be noted that since the acid mist and other products discharged from hydrolysis will continue to react with the alkaline aqueous solution to form salts, that is, the alkaline aqueous solution is in a state of continuous consumption, a filling pipe connected to the recovery chamber is also installed on the reactor 1. The filling pipe is set to be normally closed. When the liquid level of the alkaline aqueous solution in the recovery chamber drops to near the opening of the extension section of the preheating pipe 33, the filling pipe is opened to replenish the alkaline aqueous solution in the recovery chamber, keeping the opening of the preheating pipe 33 always submerged below the liquid level.

[0061] Example 2: Refer to Figures 7 to 10As shown in Example 1, considering that a large amount of gaseous products will be generated and released into the mixing chamber 20 after the hydrolysis reaction of Freon, causing a certain increase in the pressure inside the mixing chamber 20, if the sealing effect between the port of the bent conduit 30 and the mixing chamber 20 is released by directly driving the sliding push rod 35 and the sliding plate 34 downward, sufficient downward pushing force is required to overcome the pressure inside the mixing chamber 20 and disengage the sliding plate 34 from the bent conduit 30. At this time, the restoring elastic force of several compressed adjusting springs 37 alone is insufficient to overcome the pressure. Due to the internal pressure of the mixing chamber 20, several limiting sleeves 40 corresponding to the sliding push rod 35 are fixedly inserted on the sliding plate 34. The limiting sleeves 40 are sleeved on the sliding push rod 35 and axially pass through the sliding plate 34. A sealing block 41 is also splinedly fitted on the sliding push rod 35 corresponding to the limiting sleeve 40 (that is, while the sealing block 41 is rotated by the sliding push rod 35, the sealing block 41 is also allowed to slide axially along the sliding push rod 35). The sealing block 41 and the limiting sleeve 40 are detachably assembled together by means of threaded engagement.

[0062] Initially, the sealing block 41 is threadedly fitted onto the limiting sleeve 40 to create an initial sealing effect between the sliding plate 34, the bent conduit 30, and the mixing chamber 20 when the sliding plate 34 abuts against the bent conduit 30.

[0063] When the hydrolysis of Freon needs to be completed and the reaction products need to be drawn out of the mixing chamber 20, the sliding push rod 35 and the sealing block 41 are driven to rotate. Due to the pressure inside the mixing chamber 20, the lower end of the sealing block 41 is pushed. During the relative rotation of the sealing block 41 and the limiting sleeve 40, the sealing block 41 and the limiting sleeve 40 are gradually disengaged by threads, so that the mixing chamber 20, the limiting sleeve 40, the bent conduit 30, the gas guide pipe 31, the preheating pipe 33 and the recovery chamber are connected, thereby introducing the acid mist and other substances generated after hydrolysis into the recovery chamber for absorption and treatment.

[0064] Furthermore, refer to Figure 9 and Figure 10As shown, in order to drive all the sliding push rods 35 to move down, the sliding push rods 35 are fixedly protruding through the linkage plate 36, and a driven gear 42 is fixedly sleeved on the sliding push rod 35. All the driven gears 42 are meshed together with a drive gear ring 43 that is rotatably limited on the linkage plate 36. A drive rotating rod 44 that rotatably protrudes from one end of any sliding push rod 35 extends axially through the reactor 1. In use, rotating the drive rod 44 drives the connected sliding push rod 35 to rotate, which in turn drives the connected driven gear 42 to rotate. The rotation of the driven gear 42 drives the drive gear ring 43 and all the other driven gears 42 and the sliding push rod 35 to rotate synchronously, thereby driving the sealing block 41 on the sliding push rod 35 to rotate relative to the limiting sleeve 40 on the sliding plate 34. Due to the large air pressure inside the mixing chamber 20, the sealing block 41 will always act on the sealing block 41, causing the sealing block 41 to tend to slide away from the limiting sleeve 40. Through the rotation of the sealing block 41, the sealing block 41 is driven to spirally disengage from the limiting sleeve 40, so that the mixing chamber 20 can be reconnected to the bent conduit 30 and the like through the limiting sleeve 40 at this time.

[0065] As an optional implementation, in order to facilitate the subsequent re-threading assembly of the sealing block 41 and the limiting sleeve 40, the sealing block 41 has a certain weight, so that when the pressure in the mixing chamber 20 is low, the sealing block 41 will tend to move downward along the limiting sleeve 40 due to its own weight. Thus, during the reverse rotation of the sealing block 41, the sealing block 41 is driven to re-thread and connect with the connected limiting sleeve 40.

[0066] The removal of organic fluorides from natural gas using this organic fluoride removal equipment includes the following steps:

[0067] S1. Water vapor and catalyst are pre-introduced into reactor 2, and the water vapor is heated to 100-150℃ by regulator 3. The heated water vapor is then guided into reactor 2 to heat the catalyst.

[0068] S2. While heating the water vapor through the regulator 3, the heated water vapor is guided to preheat the organic fluoride to be hydrolyzed to 60-90℃.

[0069] S3. During the process of introducing water vapor and organic fluoride into reactor 2 for reaction, the heated water vapor, preheated catalyst and Freon are guided by reactor 2 to achieve efficient contact and mixing, and are heated together to 200℃-300℃.

[0070] S4. After the hydrolysis reaction is completed, guide the reaction byproducts out of reactor 2 for subsequent processing.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A natural gas organofluorine removal process based on catalytic hydrolysis, wherein the removal process employs the following organofluorine removal equipment, the organofluorine removal equipment comprising a reaction vessel (1), characterized in that: The reactor (1) is equipped with a reactor (2) for guiding the organic fluoride to react with water vapor. The reactor (1) is also equipped with a regulator (3) for providing the necessary reaction conditions during the catalytic hydrolysis process. The removal of organic fluorides from natural gas using this organic fluoride removal equipment includes the following steps: S1. Water vapor and catalyst are introduced into reactor (2) in advance, and water vapor is heated by regulator (3) to guide the heated water vapor into reactor (2) to heat the catalyst. S2. While heating the water vapor through the regulator (3), guide the heated water vapor to preheat the organic fluoride that needs to be hydrolyzed. S3. During the process of introducing water vapor and organic fluoride into reactor (2) for reaction, the heated water vapor, preheated catalyst and Freon are guided by reactor (2) to make efficient contact and mix, and are heated together to the required reaction temperature. S4. After the hydrolysis reaction is completed, guide the reaction byproducts out of the reactor (2) for subsequent processing; The reactor (2) in the organofluorine removal equipment includes a mixing chamber (20) located within the reaction vessel (1). The mixing chamber (20) is connected to two conveying pipes (21) extending outward from the reaction vessel (1). The two conveying pipes (21) are respectively used to guide water vapor and Freon to the mixing chamber (20) for reaction. Either of the two conveying pipes (21) is connected to the regulator (3). The conveying pipeline (21) located inside the mixing chamber (20) is also connected to a vortex tube (22) at one end. The two vortex tubes (22) rotate in the same direction and the two tube openings are distributed on both sides of the mixing chamber (20) at a relative interval. The vortex tube (22) is fixed with a sealing block (23) at the end away from the connected conveying pipeline (21), and the sealing block (23) is evenly provided with a number of through holes (230). The two vortex tubes (22) are concentrically arranged and correspondingly inserted together; The regulator (3) includes several bent conduits (30) that are circumferentially connected to the mixing chamber (20). After the several bent conduits (30) pass through the mixing chamber (20), they all abut against the outer wall of the mixing chamber (20) and are connected to the gas pipe (31) located on the lower side of the mixing chamber (20) after passing through the mixing chamber (20). A heat exchanger (32) is installed on the reactor (1) and is connected to one of the conveying pipes (21).

2. The natural gas organofluorine removal process based on catalytic hydrolysis according to claim 1, characterized in that: The air duct (31) is connected to a preheating pipe (33) that is spirally wound around the outside of one of the delivery pipes (21).

3. The natural gas organofluorine removal process based on catalytic hydrolysis according to claim 1, characterized in that: The mixing chamber (20) is equipped with a sliding plate (34) sleeved on one of the conveying pipelines (21). The sliding plate (34) is provided with sliding push rods (35) corresponding to several bent conduits (30). After the several sliding push rods (35) slide out of the corresponding bent conduits (30), they are connected to a linkage plate (36). Several adjusting springs (37) are provided between the linkage plate (36) and the reactor (1).

4. The natural gas organofluorine removal process based on catalytic hydrolysis according to claim 1, characterized in that: The reactor (1) is fixed with a mounting baffle (4) located below the gas guide pipe (31), and a recovery chamber is formed between the mounting baffle (4) and the inner bottom wall of the reactor (1).

5. The natural gas organofluorine removal process based on catalytic hydrolysis according to claim 2, characterized in that: The preheating pipe (33) extends through the mounting partition (4) into the recovery chamber.

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