CN115854655A

CN115854655A - Safe production device and method for high-purity low-temperature liquid gas

Info

Publication number: CN115854655A
Application number: CN202310010947.XA
Authority: CN
Inventors: 杨志强; 胡佳佳; 王晓花; 王勇; 葛飞宇
Original assignee: Jiangsu Hongren Special Gas Co ltd
Current assignee: Jiangsu Hongren Special Gas Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-03-28

Abstract

The invention provides a safe production device and method for high-purity low-temperature liquid gas. This high-purity low temperature liquid gas safety apparatus for producing, including the first jar of body, the end inner wall fixedly connected with telescopic link of the first jar of body, the output fixedly connected with lifter plate of telescopic link, the upper surface threaded connection of lifter plate has the connecting rod, the internal surface sliding connection of the first jar of body has the adsorber, the internal surface fixedly connected with baffle of the first jar of body, the internal surface fixedly connected with cooler of the first jar of body, the upper surface of lifter plate is provided with first valve. Through the lifter plate of two simultaneous lifts to and the left and right sides can go on alternately going up and down, can keep keeping pressure stable in the adsorbed stage of pressurization, and can go on in succession, increase the purity of separation, through baffle, second valve, realize that the device realizes that decompression diffusion accomplishes further separation at the in-process that uses, increases the purity of liquid nitrogen gas.

Description

Safe production device and method for high-purity low-temperature liquid gas

Technical Field

The invention relates to the technical field of liquid gas production, in particular to a high-purity low-temperature liquid gas safe production device and method.

Background

In our lives, there is a liquid gas applied to food quick freezing, medical beauty treatment, industrial production and the like, and the liquid gas is also an industrial gas which is widely applied, and the liquid gas is liquid nitrogen. The liquid nitrogen is the liquid gas of the nitrogen, is colorless, tasteless, nonirritating, incombustible and combustion-supporting as well as has the same chemical property with the nitrogen, and is a relatively safe liquid gas. Liquid nitrogen is produced mainly by air separation and fractionation, and it is first required to purify air, and after purification, it becomes liquefied gas under pressurized and cooled environments. The temperature of the liquid nitrogen is extremely low, being 196 ℃ below zero, and although there is no problem in contacting the liquid nitrogen for a moment, it is preferable for safety that the liquid nitrogen is not directly contacted, which can cause frostbite of the human body.

The applicant finds that a Chinese patent discloses a device and a method for cryogenic separation and production of high-purity liquid nitrogen through retrieval when applying the invention, and the application number is CN202111311582.1, the device and the method mainly change the tangential angle between a nozzle and an impeller by adjusting a valve to rotate a nozzle blade, the tangential angle is adjusted within 5-20 degrees, so that the flow area of an inlet is changed, the flow of an expander is further changed, the refrigerating capacity of the expander is changed, and the nitrogen making refrigerating effect is improved.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a high-purity low-temperature liquid gas safety production device and method, which solve the problem that oxygen is easy to desorb due to the fact that the pressure is difficult to stably control in the process of freeze-drying and filtering gas.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a high-purity low-temperature liquid gas safety production device comprises:

the device comprises a first tank body, wherein an expansion link is fixedly connected to the inner wall of the bottom of the first tank body, the output end of the expansion link is fixedly connected with a lifting plate, the upper surface of the lifting plate is in threaded connection with a connecting rod, the inner surface of the first tank body is in sliding connection with an adsorber, the inner surface of the first tank body is fixedly connected with a partition plate, the inner surface of the first tank body is fixedly connected with a cooler, the upper surface of the lifting plate is provided with a first valve, the inner surface of the first tank body is fixedly connected with a baffle plate, and the upper surface of the baffle plate is provided with a second valve;

the inner surface of the second tank body is fixedly connected with a filter screen, the inner surface of the second tank body is fixedly connected with a pre-cooling plate, the inner surface of the second tank body is fixedly connected with a horizontal plate, the inner surface of the horizontal plate is fixedly connected with a supercharger, and the inner surface of the second tank body is fixedly connected with a separator;

the upper surface fixedly connected with pipe of the first jar of body, the fixedly connected with pump body between the pipe, the one end fixedly connected with fourth jar of body of the first jar of body is kept away from to the pipe, the right-hand member fixedly connected with second connecting pipe of the first jar of body, the right-hand member fixedly connected with third jar of body of second connecting pipe.

Preferably, the quantity of lifter plate is two and upper and lower distribution, upside the lifter plate and connecting rod threaded connection, the surface and the nut threaded connection of connecting rod, the inside fixedly connected with cushion of adsorber, the connecting rod mid portion is smooth, sliding connection between connecting rod and the cushion for be convenient for sealed.

Preferably, the surface of lifter plate is provided with sealed the pad, the quantity of telescopic link is a plurality of and control the distribution, sealed pad and first jar of body, baffle sliding connection.

Preferably, the number of the pre-cooling plates is a plurality of and the pre-cooling plates are distributed at intervals, the right surface of the second tank body is fixedly connected with a first connecting pipe, and the right end of the first connecting pipe is fixedly connected with the cooling machine.

Preferably, the rear surfaces of the third tank body and the fourth tank body are provided with discharge holes, and a ball valve is arranged in the second connecting pipe.

Preferably, the first tank, the second tank, the third tank and the fourth tank are all made of heat-insulating materials, and the cooler, the pre-cooling plate, the pump body and the second valve are all connected with an external power supply.

Preferably, the front surfaces of the first tank body and the second tank body are respectively provided with a box door, the front surface of the box door is provided with a groove, the upper surface of the second tank body is provided with an air inlet pipe, the lower end of the air inlet pipe extends to the inside of the second tank body, and the second valve is an electric valve.

S1, introducing gas into a second tank, filtering, precooling and pressurizing by a supercharger;

s2, separating solid impurities through a separator, cooling through a cooling machine, and alternately passing through a first valve 5;

s3, after passing through the first valve, the water enters a space between the two lifting plates, and the telescopic rod pushes the lifting plates to move so as to complete adsorption;

s4, after adsorption is finished, decompression can be finished by opening the second valve, residual oxygen is collected through the pump body after separation, and liquid nitrogen is collected through the second connecting pipe.

(III) advantageous effects

The invention provides a safe production device and method for high-purity low-temperature liquid gas. The method has the following beneficial effects:

1. according to the safe production device and method for the high-purity low-temperature liquid gas, the two lifting plates which lift simultaneously can lift on the left side and the right side alternately, the pressure can be kept stable in the stage of pressurization and adsorption, the pressure can be kept stable, the pressure can be continuously kept, and the purity of separation is increased.

2. According to the safe production device and method for the high-purity low-temperature liquid gas, the device realizes decompression and diffusion to complete further separation in the using process through the baffle and the second valve, and the purity of liquid nitrogen is increased.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is a top view of the present invention;

fig. 5 is a schematic view of the overall structure of the present invention.

Wherein, 1, a first tank body; 2. a telescopic rod; 3. a cooling machine; 4. a lifting plate; 5. a first valve; 6. an adsorber; 7. a connecting rod; 8. a nut; 9. an elastic pad; 10. a baffle plate; 11. a second valve; 12. a second tank; 13. pre-cooling the plate; 14. a horizontal plate; 15. a supercharger; 16. a separator; 17. a first connecting pipe; 18. a third tank body; 19. a fourth tank body; 20. a discharge hole; 21. a pump body; 22. a conduit; 23. an air inlet pipe; 24. filtering with a screen; 25. a second connecting pipe; 26. a ball valve; 27. and (4) a box door.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-5, an embodiment of the present invention provides a safe production apparatus for high-purity low-temperature liquid gas, which includes a first tank 1, a second tank 12, a third tank 18, and a fourth tank 19, wherein the first tank 1, the second tank 12, the third tank 18, and the fourth tank 19 are made of heat insulation materials, a cooler 3, a pre-cooling plate 13, a pump body 21, and a second valve 11 are all connected to an external power source, a box door 27 is disposed on front surfaces of the first tank 1 and the second tank 12, a groove is disposed on a front surface of the box door 27, a telescopic rod 2 is fixedly connected to a bottom inner wall of the first tank 1 for adjusting a height of the lifting plate 4, an output end of the telescopic rod 2 is fixedly connected to the lifting plate 4, a connecting rod 7 is threadedly connected to an upper surface of the lifting plate 4, an adsorber 6 is slidably connected to an inner surface of the first tank 1, compressed air after purification and drying is subjected to pressure adsorption in the adsorber 6, and due to an aerodynamic effect, the diffusion rate of oxygen in micropores of the carbon molecular sieve is far greater than that of nitrogen, the oxygen is preferentially adsorbed by the carbon molecular sieve, the nitrogen is enriched in a gas phase to form finished nitrogen, the inner surface of the first tank body 1 is fixedly connected with a partition plate, the inner surface of the first tank body 1 is fixedly connected with a cooler 3 for reducing the temperature of the gas to a target value, the upper surface of the lifting plate 4 is provided with a first valve 5, the lifting plates 4 are distributed up and down, the upper lifting plate 4 is in threaded connection with a connecting rod 7, the outer surface of the connecting rod 7 is in threaded connection with a nut 8, an elastic cushion 9 is fixedly connected inside the adsorber 6, the middle part of the connecting rod 7 is smooth, the connecting rod 7 is in sliding connection with the elastic cushion 9 for facilitating sealing, the outer surface of the lifting plate 4 is provided with a sealing gasket, the number of the telescopic rods 2 is multiple and distributed left and right, and the sealing gasket is connected with the first tank body 1, the baffle sliding connection, the internal surface fixed connection of first jar of body 1 has baffle 10, and the upper surface of baffle 10 is provided with second valve 11, through decompression to ordinary pressure, the adsorbent desorption impurity such as adsorbed oxygen realizes regenerating.

The second tank 12, the inner surface of the second tank 12 is fixedly connected with a filter screen 24 for removing dust, the inner surface of the second tank 12 is fixedly connected with a pre-cooling plate 13, the number of the pre-cooling plates 13 is multiple and distributed at intervals, the right surface of the second tank 12 is fixedly connected with a first connecting pipe 17, the upper surface of the second tank 12 is provided with an air inlet pipe 23, the lower end of the air inlet pipe 23 extends into the second tank 12, the second valve 11 is an electric valve, the right end of the first connecting pipe 17 is fixedly connected with a cooler 3, the inner surface of the second tank 12 is fixedly connected with a horizontal plate 14, the inner surface of the horizontal plate 14 is fixedly connected with a supercharger 15, and the inner surface of the second tank 12 is fixedly connected with a separator 16 for separating impurities.

The upper surface fixedly connected with pipe 22 of the first jar of body 1, the fixedly connected with pump body 21 between the pipe 22, the pipe 22 keeps away from the one end fixedly connected with fourth jar of body 19 of the first jar of body 1 for store other gas, the right-hand member fixedly connected with second connecting pipe 25 of the first jar of body 1, the right-hand member fixedly connected with third jar of body 18 of second connecting pipe 25, be used for storing the liquid nitrogen, the rear surface of the third jar of body 18, the fourth jar of body 19 all is provided with relief hole 20, the inside of second connecting pipe 25 is provided with ball valve 26.

The utility model provides a high-purity low temperature liquid gas safety production method, S1 lets in the second jar of body 12 with gas, filter earlier, carry out the precooling again, and carry out the pressure boost through booster 15, S2. Separate solid impurity through separator 16, cool off through cooling machine 3, and alternately through first valve 5, S3, enter between two lifter plates 4 after first valve 5, telescopic link 2 promotes lifter plate 4 and removes and can accomplish the absorption, S4 open second valve 11 after the absorption is accomplished and can accomplish the decompression, collect through pump body 21 after the separation of remaining oxygen, liquid nitrogen gas collects through second connecting pipe 25.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-purity low-temperature liquid gas safety production device is characterized by comprising:

the device comprises a first tank body (1), wherein a telescopic rod (2) is fixedly connected to the inner wall of the bottom of the first tank body (1), an output end of the telescopic rod (2) is fixedly connected with a lifting plate (4), the upper surface of the lifting plate (4) is in threaded connection with a connecting rod (7), an absorber (6) is connected to the inner surface of the first tank body (1) in a sliding manner, a partition plate is fixedly connected to the inner surface of the first tank body (1), a cooler (3) is fixedly connected to the inner surface of the first tank body (1), a first valve (5) is arranged on the upper surface of the lifting plate (4), a baffle (10) is fixedly connected to the inner surface of the first tank body (1), and a second valve (11) is arranged on the upper surface of the baffle (10);

the filter screen (24) is fixedly connected to the inner surface of the second tank body (12), the pre-cooling plate (13) is fixedly connected to the inner surface of the second tank body (12), the horizontal plate (14) is fixedly connected to the inner surface of the second tank body (12), the supercharger (15) is fixedly connected to the inner surface of the horizontal plate (14), and the separator (16) is fixedly connected to the inner surface of the second tank body (12);

the upper surface fixedly connected with pipe (22) of the first jar of body (1), fixedly connected with pump body (21) between pipe (22), the one end fixedly connected with fourth jar of body (19) of the first jar of body (1) is kept away from in pipe (22), the right-hand member fixedly connected with second connecting pipe (25) of the first jar of body (1), the right-hand member fixedly connected with third jar of body (18) of second connecting pipe (25).

2. The safe production device of high-purity low-temperature liquid gas as claimed in claim 1, wherein: the quantity of lifter plate (4) is two and upper and lower distribution, upside lifter plate (4) and connecting rod (7) threaded connection, the surface and nut (8) threaded connection of connecting rod (7), the inside fixed connection cushion (9) of adsorber (6), connecting rod (7) middle part is smooth, sliding connection between connecting rod (7) and cushion (9).

3. The safe production device of high-purity low-temperature liquid gas as claimed in claim 1, wherein: the surface of lifter plate (4) is provided with sealed the pad, the quantity of telescopic link (2) is a plurality of and control the distribution, sealed pad and first jar of body (1), baffle sliding connection.

4. The safe production device of high-purity low-temperature liquid gas as claimed in claim 1, wherein: the quantity of cold plate in advance (13) is a plurality of and interval distribution, the right surface fixed connection of second jar body (12) has first connecting pipe (17), the right-hand member and the cooler (3) fixed connection of first connecting pipe (17).

5. The safe production device of high-purity low-temperature liquid gas as claimed in claim 1, wherein: the rear surfaces of the third tank body (18) and the fourth tank body (19) are provided with discharge holes (20), and a ball valve (26) is arranged inside the second connecting pipe (25).

6. The safe production device of high-purity low-temperature liquid gas as claimed in claim 1, wherein: the first tank body (1), the second tank body (12), the third tank body (18) and the fourth tank body (19) are made of heat-insulating materials, and the cooler (3), the precooling plate (13), the pump body (21) and the second valve (11) are all connected with an external power supply.

7. The safe production device of high-purity low-temperature liquid gas as claimed in claim 1, wherein: the front surface of the first tank body (1) and the second tank body (12) is provided with a tank door (27), the front surface of the tank door (27) is provided with a groove, the upper surface of the second tank body (12) is provided with an air inlet pipe (23), the lower end of the air inlet pipe (23) extends to the inside of the second tank body (12), and the second valve (11) is an electric valve.

8. A safe production method of high-purity low-temperature liquid gas is characterized by comprising the following steps:

s1, introducing gas into a second tank body (12), filtering, precooling and pressurizing by a supercharger;

s2, separating solid impurities through a separator (16), cooling through a cooling machine (3), and alternately passing through a first valve (5);

s3, the water enters a space between the two lifting plates (4) after passing through the first valve (5), and the telescopic rod 2 pushes the lifting plates (4) to move so as to complete adsorption;

s4, after adsorption is finished, decompression can be finished by opening the second valve (11), residual oxygen is collected through the pump body (21) after separation, and liquid nitrogen is collected through the second connecting pipe (25).