Cryogenic olefin recovery device

Abstract

The utility model discloses an olefin cryogenic recovery device, which belongs to the technical field of olefin cryogenic recovery and comprises a recovery device body, the bottom end of the recovery device body is connected with an air inlet piece, the top end of the recovery device body is connected with an air outlet pipe, and the top end of the air outlet pipe is provided with a threaded groove. Gas is filtered through the filtering membrane cylinder, impurities contained in the gas can be effectively removed, the impurities are prevented from entering the cryogenic recovery device, and therefore the problem of pipeline blockage is avoided, equipment and pipelines are protected against blockage and corrosion damage, impurities possibly causing potential safety hazards are removed, safety risks in the production process are reduced, and the production efficiency is improved. The filtered mixed gas is purer, condensation and separation of olefin are facilitated, the recovery efficiency is improved, and the scraper is arranged outside the filtering membrane cylinder and scrapes ice crystals generated on the surface of the filtering membrane cylinder at low temperature, so that the filtering membrane cylinder can efficiently run for a long time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of olefin cryogenic recovery, especially relates to an olefin cryogenic recovery device. BACKGROUND

[0002] The olefin cryogenic recovery device is an industrial equipment specially used for recovering olefins, which utilizes the cryogenic separation technology to condense and separate the olefins from the mixed gas by reducing the temperature, and the principle of the olefin cryogenic recovery device is mainly based on the cryogenic separation technology. The technology produces low temperature through adiabatic expansion, so that each component in the gas mixture is liquefied and separated according to the difference in boiling point.

[0003] If the mixed gas is not filtered when the gas is introduced into the olefin cryogenic recovery device, impurities may block the equipment and pipelines, resulting in a decrease in the performance of the equipment or even failure. At the same time, these impurities may also cause corrosion to the equipment, shortening the service life of the equipment. In addition, the olefin cryogenic recovery device may produce exhaust gas during operation, which may contain incompletely separated hydrocarbon organic matter, particulate matter and other pollutants, polluting the environment and not meeting the requirements of environmental protection regulations. SUMMARY

[0004] The utility model aims at providing an olefin cryogenic recovery device to solve the problems raised in the background.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model discloses a recovery device body, the bottom end of recovery device body is connected with the gas inlet spare, the top of recovery device body is connected with the gas outlet pipe, the top of gas outlet pipe is equipped with the thread groove,

[0007] The filter device is arranged at the bottom of the recovery device body for filtering the gas entering the recovery device, and the filter device comprises a filter membrane cartridge, and the outside of the filter membrane cartridge is provided with a scraper.

[0008] The exhaust assembly is arranged at the top of the recovery device body for filtering the exhaust gas of the recovery device, and the exhaust assembly comprises an activated carbon barrel and a page piece.

[0009] Preferably, the bottom of the filter membrane cartridge is connected with a connecting piece, the both sides of the top end of the connecting piece are provided with through grooves, the outside of the filter membrane cartridge is provided with an outer cylinder, the top end of the outer cylinder is provided with a driving device, the inside of the outer cylinder is provided with a micro gear and a hollow gear, the bottom end of the hollow gear is uniformly connected with four scrapers, and the bottom of the connecting piece is provided with a leakage barrel.

[0010] Preferably, the bottom end of the leakage barrel is threadedly connected with a storage barrel, the bottom of the air inlet member is provided with an air inlet pipe, and the middle part of the storage barrel is connected with the top part of the air inlet pipe.

[0011] Preferably, the top end of the connecting member is connected with the bottom end of the outer cylinder, and the top end of the outer cylinder is connected with the bottom end of the air inlet member.

[0012] Preferably, the driving device is a motor, the driving device is electrically connected with an external power supply, and the output end of the driving device is in transmission connection with the micro gear through the top part of the outer cylinder.

[0013] Preferably, the top ends of the micro gear and the hollow gear are rotationally connected with the top end of the inner wall of the outer cylinder, and the micro gear is in meshing connection with the hollow gear.

[0014] Preferably, the inner wall of the scraper is in mutual adhesion with the outer wall of the filter membrane cylinder, and the bottom end of the connecting member is connected with the top end of the leakage barrel.

[0015] Preferably, the top part of the activated carbon barrel is rotationally connected with a cover plate, one side of the top end of the cover plate is connected with a handle, the bottom end of the activated carbon barrel is provided with a circular groove, the inside of the circular groove is rotationally connected with a rotating disc, and the top end of the rotating disc is connected with a stirring member.

[0016] Preferably, the bottom end of the rotating disc is connected with the top end of the leaf piece, and the top part of the activated carbon barrel is provided with a baffle.

[0017] Preferably, the bottom end of the baffle is connected with a threaded ring, and the threaded ring is in threaded connection with the threaded groove.

[0018] Compared with the prior art, the utility model has the advantages of the following:

[0019] The gas is filtered through the filter membrane cylinder, impurities contained in the gas can be effectively removed, they are prevented from entering the inside of the deep cold recovery device, the problem of pipeline blockage is avoided, the equipment and pipeline are protected from damage caused by blockage and corrosion, impurities that may cause safety hazards are removed, the safety risk in the production process is reduced, the mixed gas after filtration is purer, the condensation and separation of olefins are facilitated, the recovery efficiency is improved, and the scraper is arranged outside the filter membrane cylinder, the ice crystals generated on the surface of the filter membrane cylinder at low temperature are scraped off by the scraper, and the filter membrane cylinder can operate for a long time and efficiently.

[0020] The hydrocarbons remaining in the gas are removed through the activated carbon filter, harmful substances in the gas are adsorbed, they are prevented from causing secondary pollution to the environment, the activated carbon is stirred through the gas, the activated carbon is fully contacted with the gas, the utilization rate of the activated carbon is improved, the filtering effect is improved, and the service life of the activated carbon is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described in the following only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0023] Figure 2 It is a schematic diagram of the structure of the filtering device of the present application.

[0024] Figure 3 It is a schematic diagram of the structure of the exhaust assembly of the present application.

[0025] Figure 4 It is a schematic diagram of the structure of the leaf of the present application.

[0026] Figure number explanation: 1, recovery device body; 2, air inlet; 3, air outlet pipe; 4, filtering device; 41, filter membrane cylinder; 42, connecting piece; 43, through slot; 44, outer cylinder; 45, driving device; 46, micro gear; 47, hollow gear; 48, scraper; 49, leak barrel; 5, storage barrel; 6, air inlet pipe; 7, thread groove; 8, exhaust assembly; 81, activated carbon barrel; 82, cover plate; 83, handle; 84, circular groove; 85, rotating disc; 86, stirring piece; 87, leaf; 88, baffle; 89, threaded ring. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below with reference to the drawings.

[0028] The following description is provided to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles defined in the following description can be used in other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0029] Those skilled in the art should understand that in the disclosure of the present application, the orientations or positions indicated by the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or position relationships shown in the drawings, which are only for the convenience of the simplified description of the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0030] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number. Embodiments

[0031] Please refer to Figures 1-4 An olefin cryogenic recovery device, comprising a recovery device body 1, the bottom end of the recovery device body 1 is connected with an air inlet 2, the top end of the recovery device body 1 is connected with an air outlet pipe 3, the top end of the air outlet pipe 3 is provided with a threaded groove 7; a filter device 4 is arranged at the bottom of the recovery device body 1 for filtering the gas entering the recovery device, the filter device 4 comprises a filter membrane cartridge 41, the outside of the filter membrane cartridge 41 is provided with a scraper 48; the bottom of the filter membrane cartridge 41 is connected with a connecting piece 42, the top end of the connecting piece 42 is provided with a through groove 43 on both sides, the outside of the filter membrane cartridge 41 is provided with an outer cylinder 44, the top end of the outer cylinder 44 is installed with a driving device 45, the inside of the outer cylinder 44 is provided with a micro gear 46 and a hollow gear 47, the bottom end of the hollow gear 47 is uniformly connected with four scrapers 48, the bottom of the connecting piece 42 is provided with a leakage barrel 49. The bottom end of the leakage barrel 49 is threadedly connected with a storage barrel 5, the bottom of the air inlet 2 is provided with an air inlet pipe 6, the middle part of the storage barrel 5 is connected with the top part of the air inlet pipe 6, the top end of the connecting piece 42 is connected with the bottom end of the outer cylinder 44, and the top end of the outer cylinder 44 is connected with the bottom end of the air inlet 2. The driving device 45 is a motor, the driving device 45 is electrically connected with an external power supply, and the output end of the driving device 45 penetrates through the top of the outer cylinder 44 and is in transmission connection with the micro gear 46. The top ends of the micro gear 46 and the hollow gear 47 are rotatably connected with the top end of the inner wall of the outer cylinder 44, and the micro gear 46 is in meshing connection with the hollow gear 47. The inner wall of the scraper 48 and the outer wall of the filter membrane cartridge 41 are mutually attached, and the bottom end of the connecting piece 42 is connected with the top end of the leakage barrel 49. The gas to be recovered first flows through the air inlet pipe 6, then passes through the filter device 4, and finally enters the recovery device body 1 for cryogenic recovery treatment. In this process, the top end of the air inlet pipe 6 is closely connected with the bottom end of the filter membrane cartridge 41, ensuring that the gas seamlessly enters the inside of the filter membrane cartridge 41. The gas is first subjected to fine filtration by the filter membrane cartridge 41, then flows upward to the air inlet 2, and finally reaches the recovery device body 1 for cryogenic recovery. In the inside of the filter membrane cartridge 41, the steam in the gas condenses into ice crystals on the surface of the filter membrane cartridge 41 due to the low-temperature environment inside the recovery device body 1.

[0032] To remove these ice crystals, the micro gear 46 is driven to rotate by the output end of the driving device 45, which in turn drives the hollow gear 47 to rotate. This chain reaction enables the multiple smooth-surfaced scrapers 48 to slide in close contact with the surface of the filter membrane cartridge 41. The smooth surface design of the scrapers 48 avoids the risk of the filter membrane cartridge 41 material being hooked. As the scrapers 48 slide on the surface of the filter membrane cartridge 41, they can easily scrape off the condensed ice crystals.

[0033] Due to the effect of gravity, the ice crystals cannot move upward, so they will fall down along the through groove 43 and slide along the inner wall of the leakage bucket 49 into the storage bucket 5. In order to facilitate the dumping process of the ice crystals, it is only necessary to rotate the storage bucket 5 to separate it from the leakage bucket 49, so that the ice crystals can be easily removed. This design not only improves the efficiency of gas recovery, but also ensures the stable operation of the system.

[0034] Further, the exhaust assembly 8 is arranged at the top of the recovery device body 1 for filtering the gas discharged by the recovery device. The exhaust assembly 8 includes an activated carbon barrel 81 and a page 87. The top of the activated carbon barrel 81 is rotatably connected with a cover plate 82. The inside of the activated carbon barrel 81 is filled with activated carbon. The top end of the cover plate 82 is connected with a handle 83. The bottom end of the activated carbon barrel 81 is provided with a circular groove 84. The inside of the circular groove 84 is rotatably connected with a rotating disc 85. The top end of the rotating disc 85 is connected with a stirring piece 86. The bottom end of the rotating disc 85 is connected with the top end of the page 87. The top of the activated carbon barrel 81 is provided with a baffle 88.

[0035] The bottom end of the baffle 88 is connected with a threaded ring 89 which is threadedly connected with the threaded groove 7. The gas recovered by deep cooling smoothly enters the inside of the activated carbon barrel 81 through the gas outlet pipe 3. The surface of the activated carbon barrel 81 is designed in a mesh shape and is filled with activated carbon inside, which effectively filters the gas and ensures that the discharged gas is cleaner, reducing air pollution. When the gas flows upward in the gas outlet pipe 3, it will form a gas flow with both kinetic energy and momentum around the device. If the flow rate of this gas flow is strong enough, it will generate enough impact force to drive the page 87 to rotate.

[0036] With the rotation of the page 87, the page 87 rotates, which in turn drives the rotating disc 85 and the stirring piece 86 to rotate. By using this rotation mechanism, the stirring of a large amount of activated carbon inside the activated carbon barrel 81 can be achieved, significantly improving the filtering efficiency of the activated carbon. It is worth noting that the page 87 usually adopts a spiral or fan shape which can efficiently capture and convert the energy of the gas flow. When the gas flow hits the activated carbon barrel 81, a moment of force is generated, which is the key force to drive the page 87 to start rotating.

[0037] In conclusion, the design not only ensures efficient filtration and clean discharge of the gas, but also improves the filtration efficiency of the activated carbon through the innovative mechanical linkage mechanism, achieving the dual improvement of environmental protection and efficiency.

[0038] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or action from another, and do not necessarily require or imply that these entities or actions exist in any actual relationship or order. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0039] Those skilled in the art should understand that the embodiments of the utility model shown in the above description and the drawings are only as examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and structural principle of the utility model have been demonstrated and explained in the embodiments, and the implementation of the utility model can be any deformation or modification without departing from the principle.

Claims

1. An olefin cryogenic recovery unit comprising a recovery unit body (1), characterized in that: The bottom end of the recycling device body (1) is connected with an air inlet member (2), the top end of the recycling device body (1) is connected with an air outlet pipe (3), and the top end of the air outlet pipe (3) is provided with a threaded groove (7); A filtering device (4) is arranged at the bottom of the recycling device body (1) and used for filtering the gas entering the recycling device, the filtering device (4) comprises a filtering membrane cylinder (41), and the outside of the filtering membrane cylinder (41) is provided with a scraper (48); An exhaust assembly (8) is arranged at the top of the recycling device body (1) and used for filtering the gas discharged by the recycling device, and the exhaust assembly (8) comprises an activated carbon barrel (81) and a leaf piece (87).

2. An olefin cryogenic recovery unit according to claim 1, characterized in that: The bottom end of the filtering membrane cylinder (41) is connected with a connecting member (42), the top end of the connecting member (42) is provided with a through groove (43) on both sides, the outside of the filtering membrane cylinder (41) is provided with an outer cylinder (44), the top end of the outer cylinder (44) is provided with a driving device (45), the inside of the outer cylinder (44) is provided with a micro gear (46) and a hollow gear (47), the bottom end of the hollow gear (47) is uniformly connected with four scrapers (48), and the bottom end of the connecting member (42) is provided with a leakage barrel (49).

3. An olefin cryogenic recovery unit according to claim 2, characterized in that: The bottom end of the leakage barrel (49) is threadedly connected with a storage barrel (5), the bottom end of the air inlet member (2) is provided with an air inlet pipe (6), and the middle part of the storage barrel (5) is connected with the top end of the air inlet pipe (6).

4. An olefin cryogenic recovery unit according to claim 3, characterized in that: The top end of the connecting member (42) is connected with the bottom end of the outer cylinder (44), and the top end of the outer cylinder (44) is connected with the bottom end of the air inlet member (2).

5. An olefin cryogenic recovery unit according to claim 4, characterized in that: The driving device (45) is a motor, the driving device (45) is electrically connected with an external power supply, and the output end of the driving device (45) penetrates through the top end of the outer cylinder (44) and is in transmission connection with the micro gear (46).

6. An olefin cryogenic recovery unit according to claim 5, characterized in that: The top end of the micro gear (46) and the hollow gear (47) is in rotary connection with the top end of the inner wall of the outer cylinder (44), and the micro gear (46) is in meshing connection with the hollow gear (47).

7. The olefin cryogenic recovery unit of claim 3, wherein: The inner wall of the scraper (48) is in mutual adhesion with the outer wall of the filtering membrane cylinder (41), and the bottom end of the connecting member (42) is connected with the top end of the leakage barrel (49).

8. The olefin cryogenic recovery unit of claim 1, wherein: The top end of the activated carbon barrel (81) is rotatably connected with a cover plate (82), one side of the top end of the cover plate (82) is connected with a handle (83), the bottom end of the activated carbon barrel (81) is provided with a circular groove (84), the inside of the circular groove (84) is rotatably connected with a rotating disc (85), and the top end of the rotating disc (85) is connected with a stirring member (86).

9. An olefin cryogenic recovery unit according to claim 8, characterized in that: The bottom end of the rotating disc (85) is connected with the top end of the leaf piece (87), and the top end of the activated carbon barrel (81) is provided with a baffle (88).

10. An olefin cryogenic recovery unit according to claim 9, characterized in that: The bottom end of the baffle (88) is connected with a threaded ring (89), and the threaded ring (89) is in threaded connection with the threaded groove (7).

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