CN114874820B - Natural gas dewaxing system and method - Google Patents
Natural gas dewaxing system and method Download PDFInfo
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- CN114874820B CN114874820B CN202210736499.7A CN202210736499A CN114874820B CN 114874820 B CN114874820 B CN 114874820B CN 202210736499 A CN202210736499 A CN 202210736499A CN 114874820 B CN114874820 B CN 114874820B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/06—Heat exchange, direct or indirect
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/56—Specific details of the apparatus for preparation or upgrading of a fuel
Abstract
The application relates to a natural gas dewaxing system and a natural gas dewaxing method, which belong to the technical field of natural gas conveying, and comprise a dewaxing box which is used for being communicated with a gas pipeline, wherein the gas pipeline comprises a first pipe body which enters the dewaxing box and a second pipe body which moves out of the dewaxing box; a plurality of connecting pipes are arranged in the dewaxing box and used for communicating the first pipe body and the second pipe body, a plurality of layers of dewaxing nets are arranged in the connecting pipes, and a refrigerating piece used for refrigerating the connecting pipes is also arranged in the dewaxing box; the connecting pipe is rotatably arranged in the dewaxing box, and the rotation axis of the connecting pipe is parallel to the conveying direction of the gas; the dewaxing box is internally provided with a dewaxing agent, and a first driving piece is also arranged in the dewaxing box; the connecting pipe is internally provided with a driving shaft in a rotating way, a plurality of scrapers are arranged on the driving shaft, and a second driving piece for driving the driving shaft to rotate to drive the scrapers to rotate is also arranged in the dewaxing box and used for scraping the condensed wax on the dewaxing net. The natural gas conveying device has the effect of improving the conveying efficiency of natural gas.
Description
Technical Field
The application relates to the technical field of natural gas transportation, in particular to a natural gas dewaxing system and a natural gas dewaxing method.
Background
The natural gas is used as a clean and high-efficiency energy source, so that the energy structure can be optimized, the contradiction between supply and demand is relieved, and the natural gas plays an important role in improving city grade, improving environment, improving life quality of people and realizing sustainable development. Before the natural gas extracted from the gas field is input into a finished gas pipe network, the natural gas is usually required to be subjected to hydrocarbon removal and dehydration treatment, and byproducts such as ethane, condensate oil, liquefied gas, light hydrocarbon and the like produced by natural gas condensate are recovered. However, natural gas produced in gas fields typically contains different proportions of wax components. Because the main component of the wax is a mixture of solid high-grade alkane, the high solidifying point (usually 10 ℃ to 25 ℃) can cause the phenomenon of wax precipitation of a heat exchanger, a low-temperature separator and the like in the dehydration and dealkylation processes of natural gas, the working efficiency of the heat exchanger is reduced, the low-temperature separator element is blocked and damaged, the dew point of the externally-transported natural gas hydrocarbon and water does not reach the standard, and the normal and stable operation of a natural gas treatment device is seriously influenced.
With respect to the related art in the above, the inventors consider that there are the following drawbacks: when dewaxing treatment is carried out on the treatment equipment, the natural gas is required to be conveyed in a suspended mode, and then related treatment is carried out, so that the conveying efficiency of the natural gas is low.
Disclosure of Invention
In order to improve the conveying efficiency of natural gas, the application provides a natural gas dewaxing system and a natural gas dewaxing method.
In a first aspect, the present application provides a natural gas dewaxing system, which adopts the following technical scheme:
the natural gas dewaxing system comprises a dewaxing box which is used for being communicated with a gas transmission pipeline, wherein the gas transmission pipeline comprises a first pipe body which enters the dewaxing box and a second pipe body which moves out of the dewaxing box, and the first pipe body and the second pipe body are coaxially arranged; the dewaxing box is internally provided with a plurality of connecting pipes, the connecting pipes are used for communicating a first pipe body and a second pipe body, the connecting pipes are internally provided with a plurality of layers of dewaxing nets, the layers of dewaxing nets are uniformly distributed along the length direction of the connecting pipes, and the dewaxing box is internally further provided with a refrigerating piece for refrigerating the connecting pipes; the connecting pipe is rotatably arranged in the dewaxing box, and the rotation axis of the connecting pipe is parallel to the conveying direction of the gas; the dewaxing box is internally provided with a dewaxing agent, and a first driving piece for driving the connecting pipe to rotate into the dewaxing agent and driving the connecting pipe in the dewaxing agent and the first pipe body to be in the same axis is also arranged in the dewaxing box; the dewaxing box is characterized in that a driving shaft is rotatably arranged in the connecting pipe, the driving shaft and the connecting pipe are located on the same axis, a plurality of scrapers are arranged on the driving shaft, and a second driving piece for driving the driving shaft to rotate to drive the scrapers to rotate is further arranged in the dewaxing box and used for scraping the condensed wax on the dewaxing net.
By adopting the technical scheme, in the conveying process of the natural gas, the natural gas is conveyed to the next treatment process through the first pipe body, the connecting pipe and the second pipe body; under the action of the refrigerating piece, the temperature of the natural gas passing through the connecting pipe is reduced, and the wax in the natural gas is crystallized on the dewaxing net, so that the wax carried in the natural gas is reduced, the wax crystallization of the crystal on subsequent dewaxing equipment is reduced, the frequency of shutdown treatment is reduced, and the conveying efficiency of the natural gas is improved; when more crystalline wax is on the dewaxing net, the first driving piece drives the connecting pipe to rotate, so that the positions of the connecting pipes between the dewaxing agent and the first pipe body and the second pipe body are exchanged, the connecting pipes enter the first pipe body and the second pipe body to perform a communication function, and the connecting pipes in the dewaxing agent dissolve wax crystals on the dewaxing net under the action of the dewaxing agent; and the second driving piece drives the driving shaft to rotate, and the driving shaft rotates to drive the scraping plate to rotate so as to scrape the crystalline wax on the dewaxing net for the next replacement.
Optionally, the first driving piece is including setting up the disc at a connecting pipe both ends, and is remaining the connecting pipe evenly sets up between two discs along the circumference of disc, and a plurality of connecting pipes all eccentric settings are to the disc on, connecting pipe and disc intercommunication set up, the disc rotates the setting in dewaxing the incasement, the axis of rotation of disc is on a parallel with gas delivery direction, the first driving piece is still including setting up the first motor that is used for driving disc pivoted on dewaxing the case.
Through adopting above-mentioned technical scheme, when changing the position of connecting pipe, start first motor, first motor drive disc rotates, and the disc rotates and drives the connecting pipe rotation to accomplish the position change of connecting pipe, easy operation is convenient.
Optionally, the mounting hole has been seted up on the disc, the connecting pipe passes through the mounting hole setting on the disc, it is provided with the connecting sleeve to rotate on the disc, the connecting sleeve passes through the mounting hole and rotates the setting on the disc, the connecting sleeve slides and cup joints on the connecting pipe, the outer wall threaded connection of connecting sleeve is in the mounting hole on the disc, be provided with on the disc and be used for driving the connecting sleeve rotation to order about the connecting sleeve to slide the second motor to first body or second body cup joint.
By adopting the technical scheme, after the connecting pipe rotates between the first pipe body and the second pipe body, the second motor is started, the second motor drives the connecting sleeve to rotate, the connecting sleeve rotates to slide along the axis of the disc, and the first pipe body and the second pipe body are sleeved, so that the connecting pipe, the first pipe body and the second pipe body are connected, and the operation is simple and convenient; simultaneously, in the connecting sleeve rotates and accomodates the disc, reduced first body and second body to disc pivoted influence, be convenient for change the position of connecting pipe.
Optionally, a first sealing gasket is fixedly arranged on the connecting pipeline and is abutted against the end part of the connecting sleeve; the first pipe body and the second pipe body are provided with second sealing gaskets, and the second sealing gaskets are abutted to the end parts, deviating from the first sealing gaskets, of the connecting sleeve.
By adopting the technical scheme, in the process of connecting the first pipe body and the second pipe body with the connecting pipe, the connecting sleeve is in an abutting state with the first sealing gasket, so that the tightness between the connecting sleeve and the connecting pipe is improved; meanwhile, the connecting sleeve is abutted to the second sealing gasket and compresses the second sealing gasket, so that the sealing performance between the connecting sleeve and the first pipe body and between the connecting sleeve and the second pipe body is improved, and the natural gas is conveniently conveyed.
Optionally, the scraper blade all rotates and sets up in the drive shaft, towards the scraper blade of first body is located same direction, towards the scraper blade of second body is located same direction, the forward projection of the scraper blade of dewaxing net both sides on the dewaxing net is crossing, the axis of rotation of scraper blade perpendicular to the length direction of drive shaft, be provided with in the drive shaft and be used for driving scraper blade pivoted second driving piece.
By adopting the technical scheme, the scraping plate is rotationally arranged on the driving shaft, so that the scraping plate is convenient to rotate and deviate from the dewaxing net, the influence of the scraping plate on natural gas transportation is reduced, and the natural gas transportation is facilitated; the projections of the blades on the dewaxing screens are in an intersecting state, so that the possibility of mutual influence of two blades between adjacent dewaxing screens is reduced.
Optionally, a plurality of hinge shafts are rotatably arranged on the driving shaft, and the hinge shafts are in one-to-one correspondence with the scraping plates; the second driving piece comprises a sliding rod which is arranged in the driving shaft in a sliding manner, the sliding rod slides along the length direction of the driving shaft, the first driving piece further comprises a rack which is arranged on the sliding rod, and a gear which is meshed with the rack is sleeved on the hinge shaft.
Through adopting above-mentioned technical scheme, when driving the scraper blade and rotating, promote or stimulate the slide bar, the slide bar slides and drives the rack and slide, and the rack slides and drives gear rotation, and gear rotation drives the articulated shaft and rotates, and the articulated shaft rotates and drives the scraper blade and rotate, easy operation is convenient.
Optionally, the second driving piece comprises a third motor arranged on the dewaxing box, a sleeve pipe is arranged on an output shaft of the third motor, the sleeve pipe stretches along the gas conveying direction, an inserting head is arranged at the end part of the sleeve pipe, and an inserting groove for inserting the inserting head is formed in one end, close to the sleeve pipe, of the sliding rod; the natural gas dewaxing system also includes a push rod configured to drive the slip of the ferrule tube.
By adopting the technical scheme, when the sliding rod is driven to slide, the push rod is started, the push rod slides to drive the sleeve pipe to stretch out and draw back, the sleeve pipe drives the plug connector to enter the plug groove, and the sliding rod is further pushed to slide to a required position, so that the operation is simple and convenient; and then starting a third motor, wherein the third motor drives the sleeve pipe to rotate so as to drive the driving rod to rotate, and further drive the scraping plate to rotate so as to clean the dewaxing net.
Optionally, the mesh of the dewaxing mesh is gradually reduced along the gas conveying direction; the dewaxing box is internally provided with a water pump positioned in the dewaxing agent, the water outlet end of the water pump is provided with a water outlet pipe, and the water outlet of the water outlet pipe is opposite to the air inlet end of the connecting pipe.
By adopting the technical scheme, the meshes of the dewaxing net are gradually reduced, so that the natural gas can be dewaxed through the dewaxing net conveniently; starting the water pump to extract the dewaxing agent into the connecting pipe, so as to drive the dewaxing agent in the connecting pipe to flow along the connecting pipe, thereby improving the dewaxing effect in the connecting pipe.
In a second aspect, the present application provides a method for dewaxing natural gas, which adopts the following technical scheme:
optionally, a natural gas dewaxing method, using the natural gas dewaxing system, further comprises;
s1: in the conveying process of the natural gas, the connecting pipe is refrigerated by the refrigerating piece, and the natural gas passing through the connecting pipe is cooled;
s2: after the temperature of the natural gas is reduced, wax crystals separated out from the natural gas are adhered to a dewaxing net;
s3: the first motor drives the disc to rotate, and the disc rotates to drive the connecting pipe in a connecting state to rotate into the dewaxing agent; meanwhile, a connecting pipe positioned in the dewaxing agent on the disc rotates to enter between the first pipe body and the second pipe body;
s4: starting a second motor, driving a connecting sleeve to rotate by the second motor, and sleeving the first pipe body and the second pipe body by the rotation of the connecting sleeve so as to recover the conveying of natural gas;
s5: a connecting pipe immersed in the dewaxing agent, wherein wax crystals on the dewaxing net are dissolved in the dewaxing agent; starting a push rod, wherein the push rod pushes the sleeve pipe to slide out to be abutted on the slide rod so as to drive the rack to run, and the rack is driven to rotate with the gear so as to drive the scraping plate to rotate until the scraping plate is attached to the dewaxing net;
s6: and starting a third motor, wherein the third motor drives the sleeve pipe to rotate, the sleeve pipe rotates to drive the sliding rod to rotate, and then the connecting pipe is driven to rotate, so that the scraping plate is driven to rotate to clean the dewaxing net.
In summary, the present application includes the following beneficial technical effects:
1. in the natural gas conveying process, the natural gas is conveyed to the next treatment process through the first pipe body, the connecting pipe and the second pipe body; under the action of the refrigerating piece, the temperature of the natural gas passing through the connecting pipe is reduced, and the wax in the natural gas is crystallized on the dewaxing net, so that the wax carried in the natural gas is reduced, the wax crystallization of the crystal on subsequent dewaxing equipment is reduced, the frequency of shutdown treatment is reduced, and the conveying efficiency of the natural gas is improved; when more crystalline wax is on the dewaxing net, the first driving piece drives the connecting pipe to rotate, so that the positions of the connecting pipes between the dewaxing agent and the first pipe body and the second pipe body are exchanged, the connecting pipes enter the first pipe body and the second pipe body to perform a communication function, and the connecting pipes in the dewaxing agent dissolve wax crystals on the dewaxing net under the action of the dewaxing agent; and the second driving piece drives the driving shaft to rotate, and the driving shaft rotates to drive the scraping plate to rotate so as to scrape the crystalline wax on the dewaxing net for the next replacement.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a natural gas dewaxing system according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of a dewaxing tank of a natural gas dewaxing system according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a disk in a natural gas dewaxing system according to an embodiment of the present application;
fig. 4 is an enlarged schematic view of the portion a in fig. 3.
Reference numerals illustrate: 1. dewaxing box; 2. a first tube body; 3. a second tube body; 4. a connecting pipe; 5. a dewaxing screen; 6. a disc; 7. a first motor; 8. a mounting shaft; 9. a mounting hole; 10. a connecting sleeve; 11. a second motor; 12. a first gear; 13. a tooth-shaped groove; 14. a first gasket; 15. a second gasket; 16. a drive shaft; 17. a scraper; 18. a third motor; 19. a hinge shaft; 20. a slide bar; 21. a cavity; 22. a rack; 23. a gear; 24. a ferrule; 25. a push rod; 26. a water pump; 27. and a water outlet pipe.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a natural gas dewaxing system. Referring to fig. 1, the natural gas dewaxing system includes a dewaxing tank 1 for communicating with a gas pipeline, the dewaxing tank 1 is closed, the gas pipeline includes a first pipe body 2 entering the dewaxing tank 1 and a second pipe body 3 moving out of the dewaxing tank 1, and the first pipe body 2 and the second pipe body 3 are coaxially arranged.
Referring to fig. 2 and 3, be provided with many connecting pipes 4 in dewaxing case 1, in this application embodiment, connecting pipe 4 is cylindricly, connecting pipe 4 is used for communicating first body 2 and second body 3, be provided with multilayer dewaxing net 5 in the connecting pipe 4, dewaxing net 5 is the disc 6 form, and cover the inner chamber of establishing at connecting pipe 4, multilayer dewaxing net 5 evenly arranges along the length direction of connecting pipe 4, still be provided with the refrigeration piece that is used for refrigerating connecting pipe 4 in dewaxing case 1, in this application embodiment, the refrigeration piece is including setting up the semiconductor refrigeration board in dewaxing case 1, semiconductor refrigeration board butt is on connecting pipe 4, semiconductor refrigeration board is connected with the commercial power.
Referring to fig. 2 and 3, the connection pipe 4 is rotatably provided in the dewaxing tank 1, and the rotation axis of the connection pipe 4 is parallel to the conveying direction of the gas; the dewaxing box 1 is internally provided with a dewaxing agent (the dewaxing agent is a known technology and is not described in detail herein), and the dewaxing box 1 is internally provided with a first driving piece for driving the connecting pipe 4 to rotate into the dewaxing agent and driving the connecting pipe 4 in the dewaxing agent to be in the same axis with the first pipe body 2.
In the natural gas conveying process, when the wax crystals on the dewaxing net 5 are excessively condensed, the first driving piece drives the connecting pipe 4 to rotate, and the positions of the connecting pipe 4 with the connecting function and the connecting pipe 4 immersed in the dewaxing agent are replaced; under the action of the dewaxing agent, wax crystals are dissolved, so that the passing efficiency of natural gas through the dewaxing net 5 is improved; the semiconductor refrigeration plates are electrically connected, the temperature of the semiconductor refrigeration plates is reduced, the connecting pipe 4 is cooled, wax crystals are precipitated and attached to the dewaxing net 5 when the temperature of the wax in the natural gas is lower than 35 ℃, the wax crystals entering the subsequent treatment process are reduced, and the conveying efficiency of the natural gas is improved.
Referring to fig. 3, the first driving member includes a disc 6 disposed at two ends of one connecting tube 4, in this embodiment, two connecting tubes 4 are disposed in parallel with each other in the dewaxing case 1, the connecting tubes 4 are eccentrically disposed on the disc 6, the connecting tubes 4 are disposed in communication with the disc 6, the disc 6 is rotatably disposed in the dewaxing case 1, the rotation axis of the disc 6 is parallel to the gas conveying direction, the first driving member further includes a first motor 7 disposed on the dewaxing case 1 for driving the disc 6 to rotate, a mounting shaft 8 is coaxially disposed on an output shaft of the first motor 7, and the disc 6 is coaxially disposed on the mounting shaft 8; the first motor 7 is started, the first motor 7 drives the installation shaft 8 to rotate, the installation shaft 8 rotates to drive the disc 6 to rotate, the disc 6 rotates to drive the connecting pipes 4 to rotate by taking the installation shaft 8 as a rotation axis, and then the positions of the two connecting pipes 4 are replaced, so that the operation is simple and convenient.
Referring to fig. 3 and 4, in order to facilitate connection of the connection pipe 4 with the first pipe body 2 and the second pipe body 3, the disc 6 is provided with a mounting hole 9, the connection pipe 4 is disposed on the disc 6 through the mounting hole 9, the disc 6 is rotatably provided with a connection sleeve 10, the axis of the connection sleeve 10 is parallel to the axis of the disc 6, the connection sleeve 10 is rotatably disposed on the disc 6 through the mounting hole 9, the connection sleeve 10 is slidably sleeved on the connection pipe 4, the sliding direction of the connection sleeve 10 is parallel to the axis direction of the disc 6, the outer wall of the connection sleeve 10 is in the mounting hole 9 on the disc 6, the disc 6 is provided with a second motor 11 for driving the connection sleeve 10 to rotate so as to drive the connection sleeve 10 to slide and sleeve the first pipe body 2 or the second pipe body 3, in this embodiment, the output shaft of the second motor 11 is provided with a first gear 12, the outer wall of the connection sleeve 10 is provided with a tooth-shaped groove 13 for meshing with the first gear 12, further, the tooth-shaped groove 13 is circumferentially provided with the connection sleeve 10, and simultaneously, the length direction of the tooth-shaped groove 13 is parallel to the length direction of the connection sleeve 10.
The second motor 11 is started, the second motor 11 drives the first gear 12 to rotate, and under the action of the tooth-shaped groove 13, the connecting sleeve 10 is driven to rotate, so that the connecting sleeve 10 slides to sleeve the first pipe body 2 or the second pipe body 3, and then the connecting pipe 4 is installed between the first pipe body 2 and the second pipe body 3, and the operation is simple and convenient.
Referring to fig. 3 and 4, in order to improve the sealing performance between the connection pipe 4 and the first and second pipe bodies 2 and 3, a first gasket 14 is fixedly provided on the connection pipe 4, and the first gasket 14 abuts against the end of the connection sleeve 10; the first pipe body 2 and the second pipe body 3 are provided with second sealing gaskets 15, the second sealing gaskets 15 are abutted against the end parts of the connecting sleeve 10, which deviate from the first sealing gaskets 14, and the first sealing gaskets 14 and the second sealing gaskets 15 are annular and are respectively and fixedly arranged on the pipe body and the second pipe body 3; the first sealing gasket 14 is abutted against the end part of the connecting sleeve 10 to seal a gap between the connecting sleeve 10 and the connecting pipe 4, so that the sealing performance between the connecting sleeve 10 and the connecting pipe 4 is improved; the second sealing gasket 15 abuts against the other end part of the connecting sleeve 10, and seals the connecting sleeve 10 and the first pipe body 2 and the second pipe body 3, so that the sealing performance of the connecting part is improved.
Referring to fig. 3 and 4, in order to improve the cleaning effect on the dewaxing net 5, a driving shaft 16 is rotatably arranged in the connecting pipe 4, the driving shaft 16 and the connecting pipe 4 are on the same axis, a plurality of scrapers 17 are arranged on the driving shaft 16, the scrapers 17 are abutted on the dewaxing net 5, a second driving member for driving the driving shaft 16 to rotate to drive the scrapers 17 to rotate is further arranged in the dewaxing box 1, and the second driving member comprises a third motor 18 arranged on the dewaxing box 1; the third motor 18 is started, the third motor 18 drives the scraping plate 17 to rotate, and the scraping plate 17 rotates to scrape wax crystals on the dewaxing net 5, so that the cleaning effect of the dewaxing net 5 is improved.
Referring to fig. 3 and 4, in order to reduce the influence of the scrapers 17 on the natural gas transportation, the scrapers 17 are all rotatably arranged on the driving shaft 16, the scrapers 17 facing the first pipe body 2 are positioned in the same direction, the scrapers 17 facing the second pipe body 3 are positioned in the same direction, the forward projections of the scrapers 17 on two sides of the dewaxing net 5 on the dewaxing net 5 are intersected, and the rotation axis of the scrapers 17 is perpendicular to the length direction of the driving shaft 16; in the present embodiment, the included angle between the scrapers 17 on both sides of the dewaxing wire 5 is 180 ° to avoid the interaction of the scrapers 17 between adjacent dewaxing wires 5. Further, the driving shaft 16 is provided with a receiving groove for receiving the scraper 17.
Referring to fig. 3 and 4, in order to facilitate the turning out of the scraper 17 to abut against the dewaxing net 5, a second driving member for driving the scraper 17 to rotate is provided on the driving shaft 16, and a plurality of hinge shafts 19 are rotatably provided on the driving shaft 16, wherein the hinge shafts 19 are in one-to-one correspondence with the scraper 17; the second driving piece comprises a sliding rod 20 arranged in the driving shaft 16 in a sliding way, in the embodiment of the application, the section H of the sliding rod 20 is shaped, a cavity 21 for the sliding rod 20 to slide is formed in the driving shaft 16, the section of the cavity 21 is rectangular, the sliding rod 20 and the driving shaft 16 are positioned on the same axis, the sliding rod 20 slides along the length direction of the driving shaft 16, the first driving piece further comprises a rack 22 arranged on the sliding rod 20, and a gear 23 meshed with the rack 22 is sleeved on the hinge shaft 19; when the scraper 17 is rotated out, the sliding rod 20 is driven to slide, the sliding rod 20 slides to drive the rack 22 to slide, the rack 22 slides to drive the gear 23 to rotate, and then the hinge shaft 19 is driven to rotate to drive the scraper 17 to rotate; in order to facilitate the rotation and the storage of the scraper 17 in the accommodating groove, a spring is arranged in the driving shaft 16, one end of the spring is arranged on the driving shaft 16, and the other end is abutted on the sliding rod 20.
Referring to fig. 3 and 4, a sleeve pipe 24 is arranged on an output shaft of the third motor 18, the sleeve pipe 24 stretches along the gas conveying direction, an inserting head is arranged at the end of the sleeve pipe 24, an inserting groove for inserting the inserting head is formed at one end, close to the sleeve pipe 24, of the sliding rod 20, and the inserting head is connected to the sliding rod 20 through the inserting groove so as to push or pull the sliding rod 20 to slide; the natural gas dewaxing system further comprises a push rod 25 arranged to drive the sleeve 24 to slide, in this embodiment, the sleeve 24 comprises two mutually adjustable joints, one joint is coaxially arranged on the output shaft of the third motor 18, the body of the push rod 25 is arranged on the joint close to the third motor 18, and the other joint is fixedly arranged on the output shaft of the push rod 25; and the push rod 25 is started to drive the joint pipe to drive the plug connector to be plugged into the plugging groove, then the third motor 18 is started, the third motor 18 drives the driving shaft 16 to rotate, and then the scraping plate 17 is driven to rotate to clean the dewaxing net 5.
Referring to fig. 3 and 4, the mesh of the dewaxing mesh 5 is gradually reduced in the gas transport direction; a water pump 26 is arranged in the dewaxing box 1 and positioned in the dewaxing agent, a water outlet pipe 27 is arranged at the water outlet end of the water pump 26, and the water outlet of the water outlet pipe 27 is opposite to the air inlet end of the connecting pipe 4; under the action of the water pump 26, the dewaxing agent entering the connecting pipe 4 flows out of the connecting pipe 4 to finish the flow of the dewaxing agent in the connecting pipe 4 so as to improve the dissolution effect on wax crystals.
The implementation principle of the natural gas dewaxing system in the embodiment of the application is as follows:
when natural gas is conveyed, the second motor 11 is started, the second motor 11 drives the first gear 12 to rotate, and the connecting sleeve 10 is driven to rotate under the action of the tooth-shaped groove 13, so that the connecting sleeve 10 slides to be separated from the first pipe body 2 and the second pipe body 3; starting the first motor 7, and driving the disc 6 to rotate by the first motor 7, wherein the disc 6 is driven to rotate; the connecting pipe 4 rotates;
when the connecting pipe 4 rotates to a position between the first pipe body 2 and the second pipe body 3, the second motor 11 is started, the second motor 11 drives the first gear 12 to rotate, and under the action of the tooth-shaped groove 13, the connecting sleeve 10 is driven to rotate, so that the connecting sleeve 10 slides to sleeve the first pipe body 2 or the second pipe body 3, and the connection of the first pipe body 2 and the second pipe body 3 is completed;
then, starting the push rod 25 to drive the joint pipe to drive the plug connector to be plugged into the plugging groove so as to drive the scraping plate 17 to rotate to be attached to the dewaxing net 5, and then starting the third motor 18, wherein the third motor 18 drives the driving shaft 16 to rotate so as to drive the scraping plate 17 to rotate to clean the dewaxing net 5; the water pump 26 is started, and the water pump 26 pumps the dewaxing agent into the connecting pipe 4 to wash the wax crystals.
The embodiment of the application discloses a natural gas dewaxing method, referring to fig. 1, the natural gas dewaxing method uses a natural gas dewaxing system and further comprises the following steps of;
s1: in the conveying process of the natural gas, the connecting pipe 4 is refrigerated by the refrigerating piece, and the natural gas passing through the connecting pipe 4 is cooled;
s2: after the temperature of the natural gas is reduced, wax crystals precipitated in the natural gas are attached to the dewaxing net 5;
s3: the first motor 7 drives the disc 6 to rotate, and the disc 6 rotates to drive the connecting pipe 4 in a connecting state to rotate into the dewaxing agent; meanwhile, the connecting pipe 4 positioned in the dewaxing agent on the disc 6 rotates to enter between the first pipe body 2 and the second pipe body 3;
s4: starting the second motor 11, wherein the second motor 11 drives the connecting sleeve 10 to rotate, and the connecting sleeve 10 rotates to sleeve the first pipe body 2 and the second pipe body 3 so as to recover the natural gas transportation;
s5: a connecting pipe 4 immersed in the dewaxing agent, wherein wax crystals on the dewaxing net 5 are dissolved in the dewaxing agent; starting the push rod 25, and pushing the sleeve pipe 24 to slide out and abut against the slide rod 20 by the push rod 25 so as to drive the rack 22 to run, and driving the scraper 17 to rotate so as to be attached to the dewaxing net 5 by rotating the belt gear 23;
s6: the third motor 18 is started, the third motor 18 drives the sleeve pipe 24 to rotate, the sleeve pipe 24 rotates to drive the sliding rod 20 to rotate, and then the driving shaft 16 is driven to rotate, so that the scraping plate 17 is driven to rotate to clean the dewaxing net 5.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. A natural gas dewaxing system characterized by: the device comprises a dewaxing box (1) which is used for being communicated with a gas transmission pipeline, wherein the gas transmission pipeline comprises a first pipe body (2) which enters the dewaxing box (1) and a second pipe body (3) which moves out of the dewaxing box (1), and the first pipe body (2) and the second pipe body (3) are coaxially arranged; a plurality of connecting pipes (4) are arranged in the dewaxing box (1), the connecting pipes (4) are used for communicating the first pipe body (2) and the second pipe body (3), a plurality of layers of dewaxing nets (5) are arranged in the connecting pipes (4), the layers of dewaxing nets (5) are uniformly distributed along the length direction of the connecting pipes (4), and refrigerating pieces for refrigerating the connecting pipes (4) are further arranged in the dewaxing box (1); the connecting pipe (4) is rotatably arranged in the dewaxing box (1), and the rotation axis of the connecting pipe (4) is parallel to the conveying direction of the gas; the dewaxing device is characterized in that a dewaxing agent is arranged in the dewaxing box (1), and a first driving piece which is used for driving the connecting pipe (4) to rotate into the dewaxing agent and driving the connecting pipe (4) in the dewaxing agent to be in the same axis with the first pipe body (2) is also arranged in the dewaxing box (1); the dewaxing box is characterized in that a driving shaft (16) is rotationally arranged in the connecting pipe (4), the driving shaft (16) and the connecting pipe (4) are located on the same axis, a plurality of scrapers (17) are arranged on the driving shaft (16), and a second driving piece for driving the driving shaft (16) to rotate and driving the scrapers (17) to rotate and scraping condensed wax on the dewaxing net (5) is further arranged in the dewaxing box (1).
2. A natural gas dewaxing system according to claim 1, wherein: the first driving piece is including setting up disc (6) at one connecting pipe (4) both ends, and is remaining connecting pipe (4) evenly set up between two discs (6) along the circumference of disc (6), and a plurality of connecting pipes (4) all eccentric settings are to on disc (6), connecting pipe (4) and disc (6) intercommunication set up, disc (6) rotate and set up in dewaxing case (1), the axis of rotation of disc (6) is on a parallel with gas delivery direction, the first driving piece is still including setting up first motor (7) that are used for driving disc (6) pivoted on dewaxing case (1).
3. A natural gas dewaxing system according to claim 2, wherein: the utility model discloses a connecting device for a solar cell, including disc (6), connecting tube (6), connecting sleeve (10) and connecting sleeve (10) are provided with mounting hole (9) on offer mounting hole (9) on disc (6), connecting sleeve (10) slide cup joint on connecting tube (4), the outer wall threaded connection of connecting sleeve (10) is in mounting hole (9) on disc (6), be provided with on disc (6) and be used for driving connecting sleeve (10) rotation to order about connecting sleeve (10) slide second motor (11) to first body (2) or second body (3) cup joint.
4. A natural gas dewaxing system according to claim 3, wherein: a first sealing gasket (14) is fixedly arranged on the connecting pipe (4), and the first sealing gasket (14) is abutted against the end part of the connecting sleeve (10); the first pipe body (2) and the second pipe body (3) are provided with second sealing gaskets (15), and the second sealing gaskets (15) are abutted against the end parts, deviating from the first sealing gaskets (14), of the connecting sleeve (10).
5. A natural gas dewaxing system according to claim 1, wherein: the scraper blade (17) is all rotated and is set up on drive shaft (16), towards scraper blade (17) of first body (2) are located same direction, towards scraper blade (17) of second body (3) are located same direction, the forward projection of scraper blade (17) of dewaxing net (5) both sides on dewaxing net (5) is crossing, the axis of rotation of scraper blade (17) perpendicular to the length direction of drive shaft (16), be provided with on drive shaft (16) and be used for driving scraper blade (17) pivoted second driving piece.
6. A natural gas dewaxing system according to claim 5, wherein: a plurality of hinge shafts (19) are rotatably arranged on the driving shaft (16), and the hinge shafts (19) are in one-to-one correspondence with the scraping plates (17); the second driving piece comprises a sliding rod (20) arranged in the driving shaft (16) in a sliding mode, the sliding rod (20) slides along the length direction of the driving shaft (16), the first driving piece further comprises a rack (22) arranged on the sliding rod (20), and a gear (23) meshed with the rack (22) is sleeved on the hinging shaft (19).
7. A natural gas dewaxing system according to claim 6, wherein: the second driving piece comprises a third motor (18) arranged on the dewaxing box (1), a sleeve pipe (24) is arranged on an output shaft of the third motor (18), the sleeve pipe (24) stretches along the gas conveying direction, an inserting head is arranged at the end part of the sleeve pipe (24), and an inserting groove for inserting the inserting head is formed in one end, close to the sleeve pipe (24), of the sliding rod (20); the natural gas dewaxing system also includes a push rod (25) configured to drive the slip of the ferrule tube (24).
8. A natural gas dewaxing system according to claim 1, wherein: the meshes of the dewaxing net (5) gradually decrease along the gas conveying direction; the dewaxing agent dewaxing device is characterized in that a water pump (26) is arranged in the dewaxing box (1) and positioned in the dewaxing agent, a water outlet pipe (27) is arranged at the water outlet end of the water pump (26), and the water outlet of the water outlet pipe (27) is opposite to the air inlet end of the connecting pipe (4).
9. A process for dewaxing natural gas characterized by: use of the natural gas dewaxing system of any one of claims 1 to 8, further comprising;
s1: in the conveying process of the natural gas, the connecting pipe (4) is refrigerated through the refrigerating piece, and the natural gas passing through the connecting pipe (4) is cooled;
s2: after the temperature of the natural gas is reduced, wax crystals precipitated in the natural gas are attached to a dewaxing net (5);
s3: the first motor (7) drives the disc (6) to rotate, and the disc (6) rotates to drive the connecting pipe (4) in a connecting state to rotate into the dewaxing agent; meanwhile, a connecting pipe (4) positioned in the dewaxing agent on the disc (6) rotates to enter between the first pipe body (2) and the second pipe body (3);
s4: starting a second motor (11), wherein the second motor (11) drives a connecting sleeve (10) to rotate, and the connecting sleeve (10) rotates to sleeve the first pipe body (2) and the second pipe body (3) so as to recover the natural gas transportation;
s5: a connecting pipe (4) immersed in the dewaxing agent, wherein wax crystals on the dewaxing net (5) are dissolved in the dewaxing agent; starting a push rod (25), wherein the push rod (25) pushes the sleeve pipe (24) to slide out and abut against the slide rod (20) so as to drive the rack (22) to run, and the rack (23) is driven to rotate so as to drive the scraper (17) to rotate and be attached to the dewaxing net (5);
s6: and starting a third motor (18), wherein the third motor (18) drives the sleeve pipe (24) to rotate, the sleeve pipe (24) drives the sliding rod (20) to rotate, and then drives the driving shaft (16) to rotate, so that the scraping plate (17) is driven to rotate to clean the dewaxing net (5).
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| CN202210736499.7A CN114874820B (en) | 2022-06-27 | 2022-06-27 | Natural gas dewaxing system and method |
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| US4115244A (en) * | 1977-07-05 | 1978-09-19 | Texaco Inc. | Solvent dewaxing process |
| WO2011018036A1 (en) * | 2009-08-12 | 2011-02-17 | 中原特种车辆有限公司 | Pressure reducing system for fuel gas and natural gas dewaxing vehicle |
| CN206408188U (en) * | 2017-01-23 | 2017-08-15 | 喀什德力克油田科技股份有限公司 | A kind of dewaxing device and purifying device for natural gas |
| CN211420065U (en) * | 2019-12-27 | 2020-09-04 | 阚立刚 | Dewaxing device for petrochemical industry |
| CN111732982A (en) * | 2020-06-10 | 2020-10-02 | 中国石油天然气集团有限公司 | Natural gas dewaxing method and device |
| CN111808643A (en) * | 2020-06-03 | 2020-10-23 | 四川宏华石油设备有限公司 | Natural gas dewaxing system and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002053872A1 (en) * | 2001-01-08 | 2002-07-11 | Xiaoyan Liu | The automatic paraffin scraping device used for oil well |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4115244A (en) * | 1977-07-05 | 1978-09-19 | Texaco Inc. | Solvent dewaxing process |
| WO2011018036A1 (en) * | 2009-08-12 | 2011-02-17 | 中原特种车辆有限公司 | Pressure reducing system for fuel gas and natural gas dewaxing vehicle |
| CN206408188U (en) * | 2017-01-23 | 2017-08-15 | 喀什德力克油田科技股份有限公司 | A kind of dewaxing device and purifying device for natural gas |
| CN211420065U (en) * | 2019-12-27 | 2020-09-04 | 阚立刚 | Dewaxing device for petrochemical industry |
| CN111808643A (en) * | 2020-06-03 | 2020-10-23 | 四川宏华石油设备有限公司 | Natural gas dewaxing system and method |
| CN111732982A (en) * | 2020-06-10 | 2020-10-02 | 中国石油天然气集团有限公司 | Natural gas dewaxing method and device |
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| CN114874820A (en) | 2022-08-09 |
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