CN110776967A - Liquid natural gas separation and recovery device - Google Patents
Liquid natural gas separation and recovery device Download PDFInfo
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- CN110776967A CN110776967A CN201911109273.9A CN201911109273A CN110776967A CN 110776967 A CN110776967 A CN 110776967A CN 201911109273 A CN201911109273 A CN 201911109273A CN 110776967 A CN110776967 A CN 110776967A
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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
Abstract
The invention discloses a liquid natural gas separation and recovery device, which comprises a separation box, wherein a large storage cavity is arranged in the separation box, a small storage cavity is arranged in the inner wall of the lower side of the large storage cavity in a communicated manner, a detection device is arranged in the inner wall of the lower side of the small storage cavity, the detection device can store liquid natural gas and can detect the content of the liquid natural gas.
Description
Technical Field
The invention relates to the field of natural gas, in particular to a liquid natural gas separation and recovery device.
Background
The main component of natural gas is methane, which is generally known as the cleanest fossil energy on the earth, liquid natural gas is stored in an environment with the temperature of minus 161.5 ℃ and the pressure of 0.1MPa, the natural gas mainly comprises methane, ethane, propane, nitrogen and butane, wherein the methane content is 85 percent, the ethane content is 9 percent, and the purity requirements of the natural gas for the methane and the ethane in the natural gas are higher at present, so the methane and the ethane in the natural gas need to be separated and purified The physical properties such as density, boiling point and the like are separated, and the gas purity is improved.
Disclosure of Invention
The technical problem is as follows:
the prior art has higher separation, purification and recovery cost for methane and ethane in natural gas.
The liquid natural gas separation and recovery device comprises a separation box, wherein a large storage cavity is arranged in the separation box, a small storage cavity is arranged in the inner wall of the lower side of the large storage cavity in a communicated manner, a detection device is arranged in the inner wall of the lower side of the small storage cavity, the detection device can store liquid natural gas and can detect the content of the liquid natural gas, the detection device can vaporize the liquid natural gas, the vaporized gas enters the small storage cavity and the large storage cavity, a separation device is arranged between the large storage cavity and the small storage cavity, under the pressure action of the vaporized gas, methane and ethane can be separated out through the separation device, adjusting devices are arranged in the inner walls of the left side and the right side of the large storage cavity, and the left end and the right end of the separation device are abutted against the adjusting devices, manually adjusting the adjusting device according to the content of the liquefied natural gas detected by the detecting device, thereby defining the position of the separating device in the large storage chamber and the small storage chamber after the gas separation is completed, the inner walls of the left and the right sides of the small storage cavity are symmetrically and communicated with a through groove with an opening deviating from the small storage cavity, a baffle plate is rotatably arranged in the through groove, a rotating shaft is fixedly connected in the baffle plate, the front end and the rear end of the rotating shaft are rotatably connected with the front inner wall and the rear inner wall of the through groove, the baffle plate can rotate and seal the small storage cavity, the inside of the baffle plate is fixedly connected with a connecting pipe, an air channel is arranged in the connecting pipe in a run-through manner, the air channel penetrates through the baffle plate, one end of the connecting pipe, which is far away from the symmetrical center, is fixedly connected with an air pump, when the baffle plate seals the small storage cavity, the air pump is started, and then the air in the small storage cavity and the large storage cavity is pumped out through the air channel.
Advantageously, the detection device comprises a liquid storage cavity communicated with and arranged in the inner wall of the lower side of the small storage cavity, a condensing plate is fixedly arranged in the inner wall of the lower side of the liquid storage cavity, the lower end of the condensing plate is electrically connected with a power supply, the liquid storage cavity can store liquefied natural gas, liquid level probes are symmetrically and fixedly arranged in the inner walls of the left side and the right side of the liquid storage cavity, the liquid level probe can measure the capacity of the liquefied natural gas in the liquid storage cavity, the power supply conducts electricity to the condensation plate, further keeping the temperature in the liquid storage cavity at-161.5 ℃, pumping the air in the small storage cavity and the large storage cavity by the air pump, and the air pressure in the liquid storage cavity, the small storage cavity and the large storage cavity is kept to be 0.1MPa, the diaphragm is fixedly arranged in the liquid storage cavity and can prevent liquefied natural gas in the liquid storage cavity from entering the small storage cavity.
Beneficially, the separating device comprises a lower sliding plate slidably arranged in the small storage cavity and the large storage cavity, a groove with an upward opening is arranged in the lower sliding plate, one-way holes with a downward opening are arranged in the inner wall of the lower side of the groove in a communicated manner, one-way valves are fixedly arranged in the one-way holes, the openings of the one-way valves are upward, an upper sliding plate is slidably arranged in the large storage cavity, the lower end of the upper sliding plate can slide into the groove, air guide holes are formed in the upper sliding plate in a vertically through manner, electromagnetic valves are fixedly arranged in the air guide holes, openings of the electromagnetic valves are upward, tapered holes are symmetrically arranged in the inner walls of the left side and the right side of the air guide holes in a vertically through manner, sliding plugs are slidably arranged in the tapered holes, the tapered holes can be sealed, spring grooves with downward openings are arranged in the sliding plugs, and telescopic springs are fixedly connected between the inner walls, the sliding plug is internally provided with a connecting hole with a downward opening, the inner wall of the lower side of the groove is provided with fixed rods which are bilaterally symmetrical, the upper ends of the fixed rods can slide into the connecting hole and push the sliding plug to slide, the inner wall of the lower side of the groove is bilaterally symmetrical and fixedly connected with a guide slide rod, the upper end of the guide slide rod passes through the upper side slide plate and is in sliding connection with the upper side slide plate, the inner wall of the upper side slide plate is provided with fixed switches which are bilaterally symmetrical, the fixed switches are electrically connected with the electromagnetic valve, the upper end of the guide slide rod is fixedly connected with a limit block which is positioned on the upper side of the upper side slide plate, when the limit block is in contact with the fixed switches, the electromagnetic valve is electrified, gas can pass through the electromagnetic valve, and initially, the fixed rods stretch into the, at the moment, the tapered hole is communicated with the groove and the large storage cavity, the density and the boiling point of methane in natural gas are lowest, the density and the boiling point of ethane are higher than those of methane and lower than those of other gases in natural gas, so that liquefied natural gas in the liquid storage cavity is vaporized to firstly generate methane and enter the small storage cavity, then the methane enters the groove through the one-way valve and the one-way hole, at the moment, the electromagnetic valve is not electrified to be opened, at the moment, the methane in the groove enters the large storage cavity through the tapered hole, further the air pressure in the large storage cavity is increased, further the upper sliding plate and the lower sliding plate are pushed to slide downwards until the adjusting device blocks the upper sliding plate, at the moment, the air pressure in the large storage cavity is continuously increased and compresses the telescopic spring until the tapered hole is sealed by the sliding plug, at the moment, methane is stored in the large storage cavity, ethane in the liquefied natural gas is vaporized and enters the groove through the one-way hole and the one-way valve, the ethane is completely stored between the lower side sliding plate and the upper side sliding plate due to the fact that the tapered hole is closed, the lower side sliding plate is pushed to slide downwards, the fixing rod is separated from the sliding plug, the sliding guide rod is driven to slide downwards, the electromagnetic valve is electrified when the limiting block is in contact with the fixed switch, and the ethane in the groove can be discharged.
Preferably, bilateral symmetry and the ascending hole of accomodating of opening that is equipped with that is linked together in the big storage chamber upside inner wall, it can reach to lead slide bar upper end in the accommodation hole, the separator box upper end has linked firmly three recovery pump, the left and right sides the recovery pump just to the accommodation hole, big storage chamber upside inner wall with linked firmly the elasticity pipeline between the upside slide plate upper end, the up-and-down through-going be equipped with gas passage in the elasticity pipeline, gas passage just to the gas guide hole, the intercommunication is equipped with the ascending through-hole of opening in the big storage chamber upside inner wall, the through-hole is linked together in the gas passage, middle the recovery pump just to the through-hole, start three recovery pump, when electromagnetic valve circular telegram back, middle the recovery pump passes through the through-hole, gas passage and the gas guide hole is followed take out ethane in the recess, the recovery pumps on the two sides pump out the methane in the large storage cavity through the accommodating holes.
Beneficially, the adjusting device comprises a guide chute which is communicated and arranged in the inner walls of the left side and the right side of the large storage cavity, and has an opening deviating from the large storage cavity, a sliding block is slidably arranged in the guide chute, the sliding block abuts against the lower end of the upper side sliding plate, a screw rod is connected in the sliding block in a threaded manner, a gear cavity is arranged in the inner wall of the upper side of the guide chute, a driven gear is rotatably arranged in the gear cavity, the upper end of the screw rod is fixedly connected to the driven gear, one end of the driven gear, far away from the symmetry center, is engaged with a driving gear, a rotating rod is fixedly connected to one end of the driving gear, far away from the symmetry center, extends out of the separation box, rotates the rotating rod, and further drives the driving gear to rotate, and, and may define a lower limit position for sliding movement of the upper slide plate.
Preferably, a glass plate is fixedly arranged in the guide sliding groove, the glass plate seals the guide sliding groove, scales are engraved on the glass plate, the glass plate can reflect the volume of the large storage cavity on the upper side of the sliding block, and the scales on the glass plate correspond to the volume of the liquefied natural gas in the liquid storage cavity measured by the liquid level probe one to one, so that when methane in the liquefied natural gas is completely vaporized and enters the large storage cavity, the lower end of the upper side sliding plate just abuts against the sliding block.
The invention has the beneficial effects that: the invention only needs to vaporize the liquefied natural gas and separate and recycle the liquefied natural gas through the pressure of the gas, does not need to consume excessive electric energy, saves the cost of separation, purification and recycling, and separates the liquefied natural gas according to the physical properties of the natural gas, such as content proportion, density, boiling point and the like, thereby improving the purity of the gas.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic diagram of the overall structure of a liquid natural gas separation and recovery apparatus according to the present invention;
FIG. 2 is an enlarged schematic view of "A" of FIG. 1;
fig. 3 is an enlarged schematic view of "B" of fig. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-3, for the sake of convenience, the orientations described hereinafter being defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a liquid natural gas separation and recovery device, which is mainly applied to separation, purification and recovery of liquid natural gas, and the invention is further explained by combining the attached drawings of the invention:
the invention relates to a liquid natural gas separation and recovery device, which comprises a separation box 11, wherein a large storage cavity 25 is arranged in the separation box 11, a small storage cavity 30 is arranged in the inner wall of the lower side of the large storage cavity 25 in a communicated manner, a detection device 102 is arranged in the inner wall of the lower side of the small storage cavity 30, the detection device 102 can store liquid natural gas and can detect the content of the liquid natural gas, the detection device 102 can vaporize the liquid natural gas, the vaporized gas enters the small storage cavity 30 and the large storage cavity 25, a separation device 100 is arranged between the large storage cavity 25 and the small storage cavity 30, under the pressure action of the vaporized gas, methane and ethane can be separated out through the separation device 100, adjusting devices 101 are arranged in the inner walls of the left side and the right side of the large storage cavity 25, the left end and the right end of the separation device 100 are abutted against the adjusting devices 101, according to the content of the liquefied natural gas measured by the detection device 102, the adjustment device 101 is manually adjusted, so that the positions of the separation device 100 in the large storage cavity 25 and the small storage cavity 30 after the gas separation is completed can be limited, the inner walls of the left side and the right side of the small storage cavity 30 are symmetrically and communicated with each other to form a through groove 20 with an opening deviating from the small storage cavity 30, a baffle 21 is rotatably arranged in the through groove 20, a rotating shaft 31 is fixedly connected in the baffle 21, the front end and the rear end of the rotating shaft 31 are rotatably connected to the front inner wall and the rear inner wall of the through groove 20, the baffle 21 is rotatably and seals the small storage cavity 30, a connecting pipe 19 is fixedly connected in the baffle 21, an air channel 18 is arranged in the connecting pipe 19 in a through manner, the air channel 18 penetrates through the baffle 21, an air pump 17 is fixedly connected at one end, far away from the center of, the air pump 17 is activated to pump out the air in the small storage chamber 30 and the large storage chamber 25 through the air passage 18.
According to the embodiment, the detection device 102 is described in detail below, the detection device 102 includes a liquid storage cavity 15 communicated with and disposed in the inner wall of the lower side of the small storage cavity 30, a condensation plate 13 is fixedly disposed in the inner wall of the lower side of the liquid storage cavity 15, a power supply 14 is electrically connected to the lower end of the condensation plate 13, liquefied natural gas can be stored in the liquid storage cavity 15, liquid level probes 16 are symmetrically disposed in the inner walls of the left and right sides of the liquid storage cavity 15, the liquid level probes 16 can measure the capacity of the liquefied natural gas in the liquid storage cavity 15, the condensation plate 13 is electrically conducted through the power supply 14, so that the temperature in the liquid storage cavity 15 can be maintained at-161.5 ℃, the air pump 17 pumps air in the small storage cavity 30 and the large storage cavity 25, and maintains the air pressure in the liquid storage cavity 15, the small storage cavity 30 and the large storage cavity 25 at 0.1MPa, the liquid storage cavity 15 is internally and fixedly provided with a diaphragm 12, and the diaphragm 12 can prevent the liquefied natural gas in the liquid storage cavity 15 from entering the small storage cavity 30.
According to the embodiment, the separating apparatus 100 is described in detail below, the separating apparatus 100 includes a lower sliding plate 41 slidably disposed in the small storage chamber 30 and the large storage chamber 25, a groove 42 with an upward opening is disposed in the lower sliding plate 41, a one-way hole 40 with a downward opening is disposed in the inner wall of the lower side of the groove 42, a one-way valve 39 is fixedly disposed in the one-way hole 40, the one-way valve 39 has an upward opening, an upper sliding plate 46 is slidably disposed in the large storage chamber 25, a lower end of the upper sliding plate 46 can slide into the groove 42, an air guide hole 38 is vertically penetrated through the upper sliding plate 46, an electromagnetic valve 37 is fixedly disposed in the air guide hole 38, the electromagnetic valve 37 has an upward opening, vertically penetrating tapered holes 36 are symmetrically disposed in the inner walls of the left and right sides of the air guide hole 38, a sliding plug 33 is slidably disposed in the tapered hole 36, the sliding plug 33 can seal the taper hole 36, the sliding plug 33 is internally provided with a spring groove 34 with a downward opening, the upper inner wall of the spring groove 34 is fixedly connected with the upper end face of the upside sliding plate 46 by a telescopic spring 48, the sliding plug 33 is internally provided with a connecting hole 35 with a downward opening, the lower inner wall of the groove 42 is fixedly connected with a fixing rod 43 in a bilateral symmetry manner, the upper end of the fixing rod 43 can slide into the connecting hole 35 and push the sliding plug 33 to slide, the lower inner wall of the groove 42 is in a bilateral symmetry manner and is fixedly connected with a guide rod 44, the upper end of the guide rod 44 is passed through the upside sliding plate 46 and is in sliding connection with the upside sliding plate 46, the upper inner wall of the upside sliding plate 46 is in a bilateral symmetry manner and is fixedly provided with a fixed switch 47, the fixed switch 47 is electrically connected with the electromagnetic valve 37, the upper end of the guide rod 44 is, when the limiting block 49 contacts the fixed switch 47, the electromagnetic valve 37 is energized, and at this time, gas can pass through the electromagnetic valve 37, initially, the fixing rod 43 extends into the connecting hole 35 and positions the sliding plug 33 outside the tapered hole 36, at this time, the tapered hole 36 is communicated with the groove 42 and the large storage chamber 25, the density and the boiling point of methane in natural gas are lowest, the density and the boiling point of ethane are higher than those of methane and lower than those of other gases in natural gas, so that after liquefied natural gas in the liquid storage chamber 15 is vaporized, methane is first generated and enters the small storage chamber 30, and then enters the groove 42 through the one-way valve 39 and the one-way hole 40, at this time, the electromagnetic valve 37 is not energized and opened, at this time, methane in the groove 42 enters the large storage chamber 25 through the tapered hole 36, the air pressure in the large storage cavity 25 is increased to push the upper sliding plate 46 and the lower sliding plate 41 to slide downwards until the adjusting device 101 blocks the upper sliding plate 46, at this time, the air pressure in the large storage cavity 25 is continuously increased and compresses the extension spring 48 until the sliding plug 33 seals the tapered hole 36, at this time, methane is stored in the large storage cavity 25, at this time, ethane in the liquefied natural gas is vaporized and enters the groove 42 through the one-way hole 40 and the one-way valve 39, because the tapered hole 36 is sealed, ethane is completely stored between the lower sliding plate 41 and the upper sliding plate 46 and pushes the lower sliding plate 41 to slide downwards, so that the fixing rod 43 is separated from the sliding plug 33, and simultaneously the sliding guide rod 44 is driven to slide downwards, but when the limiting block 49 is contacted with the fixed switch 47, the solenoid valve 37 is energized, and the ethane in the groove 42 is discharged.
Beneficially, the large storage cavity 25 is provided with the storage holes 26 with upward openings, which are bilaterally symmetrical and communicated with each other, in the inner wall of the upper side of the large storage cavity 25, the upper end of the sliding guide rod 44 can extend into the storage hole 26, the upper end of the separation box 11 is fixedly connected with three recovery pumps 28, the recovery pumps 28 on the left side and the right side are right opposite to the storage hole 26, the elastic pipeline 32 is fixedly connected between the inner wall of the upper side of the large storage cavity 25 and the upper end of the upper side sliding plate 46, the elastic pipeline 32 is internally provided with a gas channel 54 which is vertically communicated with each other, the gas channel 54 is right opposite to the gas guide hole 38, the inner wall of the upper side of the large storage cavity 25 is provided with a through hole 29 with an upward opening, the through hole 29 is communicated with the gas channel 54, the middle recovery pump 28 is right opposite to the through hole 29, the three recovery pumps 28 are started, the gas passage 54 and the gas guide holes 38 draw out ethane from the groove 42, and the recovery pumps 28 on both sides draw out methane in the large storage chamber 25 through the receiving hole 26.
According to the embodiment, the following description is made in detail on the adjusting device 101, the adjusting device 101 includes a guide chute 22 communicated with each other and disposed in the inner walls of the left and right sides of the large storage cavity 25, the guide chute 22 is provided with a sliding block 45 in the guide chute 22, the sliding block 45 abuts against the lower end of the upper side sliding plate 46, the sliding block 45 is connected with a screw rod 23 in a threaded manner, a gear cavity 51 is disposed in the inner wall of the upper side of the guide chute 22, a driven gear 50 is rotatably disposed in the gear cavity 51, the upper end of the screw rod 23 is fixedly connected to the driven gear 50, the driven gear 50 is far away from a driving gear 52 engaged with one end of the symmetry center, one end of the driving gear 52 far away from the symmetry center is fixedly connected with a rotating rod 53, one end of the rotating rod 53 far away from the symmetry, and further drives the driving gear 52 to rotate, and further drives the driven gear 50 to rotate, and further drives the slider 45 to slide through the lead screw 23, so that the sliding lower limit position of the upper side sliding plate 46 can be limited.
Advantageously, a glass plate 24 is fixedly arranged in the guide chute 22, the glass plate 24 closes the guide chute 22, scales are engraved on the glass plate 24, the volume of the large storage cavity 25 located on the upper side of the sliding block 45 can be reflected through the glass plate 24, and the scales on the glass plate 24 correspond to the volume of the liquefied natural gas in the liquid storage cavity 15 measured by the liquid level probe 16 in a one-to-one manner, so that when methane in the liquefied natural gas is completely vaporized and enters the large storage cavity 25, the lower end of the upper sliding plate 46 just abuts against the sliding block 45.
The following will explain in detail the use steps of a liquid natural gas separation and recovery device herein with reference to fig. 1 to 3:
initially, the small storage chamber 30 is in an open state. At this time, the upper slide plate 46 and the lower slide plate 41 are at the upper limit positions, the upper end of the fixing rod 43 extends into the connecting hole 35, the tapered hole 36 communicates with the groove 42 and the large storage chamber 25, the limit block 49 does not contact the fixing switch 47, the solenoid valve 37 is not energized, and the upper end of the guide rod 44 extends into the accommodating hole 26.
When the device is used, liquefied natural gas is added into the liquid storage cavity 15, the baffle 21 is rotated and the small storage cavity 30 is closed at the moment, the air pump 17 and the power supply 14 are started at the moment, the air pump 17 pumps out air in the small storage cavity 30, the large storage cavity 25 and the liquid storage cavity 15 through the air channel 18, the air pressure in the liquid storage cavity 15 is kept at 0.1MPa, the power supply 14 is electrified on the condensation plate 13, the liquid storage cavity 15 is kept at-161.5 ℃, the liquefied natural gas can be stored in the liquid storage cavity 15 at the moment, the content of the liquefied natural gas is detected through the liquid level probe 16, meanwhile, according to the capacity of the liquefied natural gas detected by the liquid level probe 16, the diaphragm 12 can prevent the liquefied natural gas from entering the small storage cavity 30, the rotating rod 53 is rotated to drive the driving gear 52 to rotate, the driven gear 50 to rotate, the slider 45 is driven to slide through the screw rod 23 until the slider 45 is just opposite, at this time, the temperature of the condensation plate 13 is increased, the temperature of the liquefied natural gas in the liquid storage cavity 15 is increased, the methane gas is firstly vaporized and enters the small storage cavity 30, then enters the groove 42 through the one-way hole 40 and the one-way valve 39, and then enters the large storage cavity 25 through the tapered hole 36, the air pressure in the large storage cavity 25 is increased, and further the upper sliding plate 46 and the lower sliding plate 41 are pushed to slide downwards until the upper sliding plate 46 contacts the sliding block 45, and further the air pressure in the large storage cavity 25 is continuously increased, and the expansion spring 48 is compressed and the tapered hole 36 is sealed, at this time, the methane in the liquefied natural gas is stored in the large storage cavity 25 on the upper side of the upper sliding plate 46, at this time, the temperature of the condensation plate 13 is continuously increased, and further the ethane is vaporized and enters the small storage cavity 30, and enters the groove 42 through the one-way hole 40 and the one-way valve, then the lower sliding plate 41 is pushed to slide downwards, the fixing rod 43 is driven to be separated from the sliding plug 33, the sliding guide rod 44 is driven to slide downwards at the same time, the limiting block 49 is contacted with the fixed switch 47, at the moment, the electromagnetic valve 37 is electrified, at the moment, ethane gas in liquefied natural gas is stored in the groove 42, at the moment, the power supply 14 is electrified through the condensing plate 13, the temperature in the liquid storage cavity 15 is kept at minus 161.5 ℃ again, at the moment, the middle recovery pump 28 is started, then the ethane gas in the groove 42 is pumped out through the through hole 29, the gas channel 54 and the gas guide hole 38, at the moment, the lower sliding plate 41 slides upwards, the fixing rod 43 is driven to extend into the connecting hole 35, at the moment, the limiting block 49 is separated from the fixed switch 47, at the moment, the electromagnetic valve 37 is still electrified, until the ethane gas in the groove 42 is completely pumped out, then the recovery pumps 28, under the elastic force of the extension spring 48, the sliding plug 33 is driven to slide upwards and reopen until the methane in the large storage cavity 25 is completely pumped out, and finally the device is restored to the initial state.
The invention has the beneficial effects that: the invention only needs to vaporize the liquefied natural gas and separate and recycle the liquefied natural gas through the pressure of the gas, does not need to consume excessive electric energy, saves the cost of separation, purification and recycling, and separates the liquefied natural gas according to the physical properties of the natural gas, such as content proportion, density, boiling point and the like, thereby improving the purity of the gas.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.
Claims (6)
1. A liquid natural gas separation and recovery device comprises a separation box; a large storage cavity is arranged in the separation box, a small storage cavity is arranged in the inner wall of the lower side of the large storage cavity in a communicated manner, a detection device is arranged in the inner wall of the lower side of the small storage cavity, the detection device can store liquefied natural gas and can detect the content of the liquefied natural gas, the detection device can vaporize the liquefied natural gas, and the vaporized gas enters the small storage cavity and the large storage cavity; a separation device is arranged between the large storage cavity and the small storage cavity, and methane and ethane can be separated out through the separation device under the air pressure action of the vaporized gas; adjusting devices are arranged in the inner walls of the left side and the right side of the large storage cavity, the left end and the right end of the separating device are abutted against the adjusting devices, the adjusting devices are manually adjusted according to the content of the liquefied natural gas measured by the detecting device, and then the positions of the separating devices in the large storage cavity and the small storage cavity after the gas separation is finished can be limited; symmetry and being equipped with that be linked together in the little storage chamber left and right sides inner wall deviates from little storage chamber's logical groove, the rotatable baffle that is equipped with in logical inslot, the pivot has been linked firmly in the baffle, both ends rotate around the pivot connect in inner wall around leading to the groove, the baffle is rotatable and seal little storage chamber, the connecting pipe has been linked firmly in the baffle, the air passage that is equipped with that link up in the connecting pipe, the air passage runs through the baffle, center of symmetry one end has been linked firmly the air pump is kept away from to the connecting pipe, works as the baffle seals when little storage chamber, start the air pump, and then pass through the air passage will little storage chamber and the air in the big storage chamber is taken out.
2. The lng separation and recovery apparatus of claim 1, wherein: the detection device comprises a liquid storage cavity communicated with the inner wall of the lower side of the small storage cavity, a condensing plate is fixedly arranged in the inner wall of the lower side of the liquid storage cavity, the lower end of the condensing plate is electrically connected with a power supply, and liquefied natural gas can be stored in the liquid storage cavity; liquid level probes are symmetrically and fixedly arranged in the inner walls of the left side and the right side of the liquid storage cavity, and the liquid level probes can measure the capacity of liquefied natural gas in the liquid storage cavity; the diaphragm is fixedly arranged in the liquid storage cavity and can prevent liquefied natural gas in the liquid storage cavity from entering the small storage cavity.
3. The lng separation and recovery apparatus of claim 1, wherein: the separating device comprises a lower side sliding plate which is slidably arranged in the small storage cavity and the large storage cavity, a groove with an upward opening is arranged in the lower side sliding plate, one-way holes with a downward opening are communicated in the inner wall of the lower side of the groove, one-way valves are fixedly arranged in the one-way holes, and the openings of the one-way valves are upward; an upper side sliding plate is arranged in the large storage cavity in a sliding manner, the lower end of the upper side sliding plate can slide into the groove, an air guide hole is formed in the upper side sliding plate in a vertically through manner, an electromagnetic valve is fixedly arranged in the air guide hole, and the opening of the electromagnetic valve is upward; tapered holes which are communicated up and down are symmetrically arranged in the inner walls of the left side and the right side of the air guide hole, a sliding plug is slidably arranged in each tapered hole and can seal the tapered holes, a spring groove with a downward opening is arranged in each sliding plug, and a telescopic spring is fixedly connected between the inner wall of the upper side of each spring groove and the upper end face of the upper side sliding plate; a connecting hole with a downward opening is formed in the sliding plug, fixing rods are fixedly connected to the inner wall of the lower side of the groove in a bilateral symmetry mode, and the upper end of each fixing rod can slide into the corresponding connecting hole and push the sliding plug to slide; bilateral symmetry just has linked firmly the guide slide bar on the recess downside inner wall, lead the slide bar upper end and pass upside slide and with upside slide sliding connection, bilateral symmetry's the fixed switch that has set firmly in the upside slide upside inner wall, fixed switch electric connection in solenoid valve, it has linked firmly the stopper to lead the slide bar upper end, the stopper is located upside slide upside, works as the stopper with during the fixed switch contact, it is right solenoid valve circular telegram, gaseous accessible this moment solenoid valve.
4. The lng separation and recovery apparatus of claim 3, wherein: the inner wall of the upper side of the large storage cavity is bilaterally symmetrical and communicated with each other and is provided with storage holes with upward openings, the upper ends of the guide slide rods can extend into the storage holes, the upper end of the separation box is fixedly connected with three recovery pumps, and the recovery pumps on the left side and the right side are right opposite to the storage holes; big storage chamber upside inner wall with link firmly the elasticity pipeline between the upside slide upper end, what link up about in the elasticity pipeline is equipped with gas passage, gas passage just right the gas guide hole, what communicate in the big storage chamber upside inner wall is equipped with the ascending through-hole of opening, the through-hole be linked together in gas passage, middle the recovery pump just right the through-hole.
5. The lng separation and recovery apparatus of claim 3, wherein: the adjusting device comprises a guide sliding chute which is communicated with the inner walls of the left side and the right side of the large storage cavity, the opening of the guide sliding chute deviates from the large storage cavity, a sliding block is slidably arranged in the guide sliding chute, and the sliding block abuts against the lower end of the upper side sliding plate; slider female connection has the lead screw, be equipped with the gear chamber in the spout upside inner wall, the rotatable driven gear that is equipped with of gear chamber, the lead screw upper end link firmly in driven gear, driven gear keeps away from that one end of center of symmetry meshes mutually and is equipped with the driving gear, the driving gear is kept away from center of symmetry one end and has been linked firmly the dwang, the dwang is kept away from center of symmetry one end and is extended to outside the separator box.
6. The LNG separation and recovery apparatus of claim 5, wherein: the glass plate is fixedly arranged in the guide sliding groove and sealed, scales are carved on the glass plate, the glass plate can reflect the volume of the large storage cavity on the upper side of the sliding block, and the scales on the glass plate correspond to the volume of the liquefied natural gas in the liquid storage cavity measured by the liquid level probe one to one, so that when methane in the liquefied natural gas is completely vaporized and enters the large storage cavity, the lower end of the upper side sliding plate just abuts against the sliding block.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU559718A1 (en) * | 1973-10-09 | 1977-05-30 | Тюменский государственный научно-исследовательский и проектный институт природных газов | Centrifugal separation element |
| JP2841224B2 (en) * | 1990-02-07 | 1998-12-24 | 株式会社堀場製作所 | Gas-liquid separator |
| CN1533489A (en) * | 2002-05-07 | 2004-09-29 | J��C�������ձ���ʽ���� | Cryogenic fluid joint |
| CN1816697A (en) * | 2003-06-20 | 2006-08-09 | 东芝开利株式会社 | Rotary-type enclosed compressor and refrigeration cycle apparatus |
| CN101680293A (en) * | 2007-05-25 | 2010-03-24 | 埃克森美孚上游研究公司 | Produce the method for hydrocarbon fluid in conjunction with original position heating, power set and natural gas treatment plant |
| JP2011025223A (en) * | 2009-06-24 | 2011-02-10 | Kawako Sangyo Kk | Gas-liquid separator and gas-liquid separation method |
| CN102292609A (en) * | 2008-11-20 | 2011-12-21 | 丹佛斯公司 | An expansion valve comprising a diaphragm and at least two outlet openings |
| CN105674056A (en) * | 2016-02-24 | 2016-06-15 | 新奥科技发展有限公司 | Methane recovering system and recovering method |
| WO2016163406A1 (en) * | 2015-04-09 | 2016-10-13 | 愛三工業 株式会社 | Pressure regulation valve |
| CN110282099A (en) * | 2019-07-09 | 2019-09-27 | 东阳韵源自动化科技有限公司 | A kind of oxygen supply equipment for underwater operation |
-
2019
- 2019-11-13 CN CN201911109273.9A patent/CN110776967B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU559718A1 (en) * | 1973-10-09 | 1977-05-30 | Тюменский государственный научно-исследовательский и проектный институт природных газов | Centrifugal separation element |
| JP2841224B2 (en) * | 1990-02-07 | 1998-12-24 | 株式会社堀場製作所 | Gas-liquid separator |
| CN1533489A (en) * | 2002-05-07 | 2004-09-29 | J��C�������ձ���ʽ���� | Cryogenic fluid joint |
| CN1816697A (en) * | 2003-06-20 | 2006-08-09 | 东芝开利株式会社 | Rotary-type enclosed compressor and refrigeration cycle apparatus |
| CN101680293A (en) * | 2007-05-25 | 2010-03-24 | 埃克森美孚上游研究公司 | Produce the method for hydrocarbon fluid in conjunction with original position heating, power set and natural gas treatment plant |
| CN102292609A (en) * | 2008-11-20 | 2011-12-21 | 丹佛斯公司 | An expansion valve comprising a diaphragm and at least two outlet openings |
| JP2011025223A (en) * | 2009-06-24 | 2011-02-10 | Kawako Sangyo Kk | Gas-liquid separator and gas-liquid separation method |
| WO2016163406A1 (en) * | 2015-04-09 | 2016-10-13 | 愛三工業 株式会社 | Pressure regulation valve |
| CN105674056A (en) * | 2016-02-24 | 2016-06-15 | 新奥科技发展有限公司 | Methane recovering system and recovering method |
| CN110282099A (en) * | 2019-07-09 | 2019-09-27 | 东阳韵源自动化科技有限公司 | A kind of oxygen supply equipment for underwater operation |
Non-Patent Citations (1)
| Title |
|---|
| 申安云: "利用天然气压力能的轻烃分离方法", 《煤气与热力》 * |
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