CN218895581U - Air separation device for cryogenic oxygen production - Google Patents

Air separation device for cryogenic oxygen production Download PDF

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Publication number
CN218895581U
CN218895581U CN202223496124.2U CN202223496124U CN218895581U CN 218895581 U CN218895581 U CN 218895581U CN 202223496124 U CN202223496124 U CN 202223496124U CN 218895581 U CN218895581 U CN 218895581U
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China
Prior art keywords
sand
tower body
air separation
liquid nitrogen
separation device
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CN202223496124.2U
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Chinese (zh)
Inventor
杜海威
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Hebei Rongxin Iron And Steel Co ltd
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Hebei Rongxin Iron And Steel Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04945—Details of internal structure; insulation and housing of the cold box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
    • F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/40—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval

Abstract

The utility model relates to an air separation device for cryogenic oxygen production, which comprises a tower body, an air separation tower, a subcooler, a liquid air conveying pipeline, a liquid nitrogen backflow pipeline, a V1 throttle valve arranged on the liquid nitrogen conveying pipeline, a V2 throttle valve arranged on the liquid air conveying pipeline and a V3 throttle valve arranged on the liquid nitrogen backflow pipeline, and is characterized in that 3 isolation boxes are arranged in the tower body, so that 3 independent small cavities and 1 main cavity are isolated, the V1 throttle valve, the V2 throttle valve and the V3 throttle valve are respectively arranged in the 3 small cavities, and the air separation tower and the subcooler are arranged in the main cavity. When the throttle valve is damaged and leaked, the utility model can realize maintenance by only scraping out the pearly-luster sand in the corresponding small cavity, and all the pearly-luster sand is not required to be scraped out together, thereby greatly reducing the maintenance workload and saving the maintenance time.

Description

Air separation device for cryogenic oxygen production
Technical Field
The utility model relates to an air separation device, in particular to an air separation device for cryogenic oxygen generation.
Background
The air separation device is a main device for realizing nitrogen-oxygen separation in the deep cooling oxygen generation technology, and generally comprises a tower body, an air separation tower and a subcooler which are arranged in the tower body, and heat insulation material pearlite sand filled in the tower body. The larger the space division equipment is, the larger the volume of the tower body is, the more heat insulation and heat preservation materials are needed, and when equipment in the tower body leaks, even if only a small leakage point is arranged, the whole pearlescent sand in the tower body can be scraped out after the equipment is stopped, so that maintenance work is carried out, the maintenance workload is extremely large, the time consumed for maintenance is extremely long, in addition, the V1 throttle valve and the V2 throttle valve on the liquid space transmission pipeline of the air division tower and the liquid nitrogen transmission pipeline of the subcooler are communicated, and the V3 throttle valve on the liquid nitrogen reflux pipeline of the condensing evaporator of the air division tower and the lower rectifying tower are communicated, so that leakage faults are easy to occur to the 3 throttle valves, and the equipment is in a parking maintenance state frequently, and the use of the equipment is seriously influenced.
Disclosure of Invention
The utility model aims to overcome the defects that all pearly-luster sand needs to be scraped out and the maintenance is laborious and time-consuming in the maintenance of a hollow separation device in the prior art, and provides a hollow separation device for cryogenic oxygen production.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides an air separation device for cryogenic oxygen generation, includes the tower body, set up in empty separation tower, subcooler, liquid air conveying pipeline, liquid nitrogen conveying pipeline and liquid nitrogen reflux pipeline in the tower body, and set up in V1 choke valve on the liquid nitrogen conveying pipeline, set up in V2 choke valve on the liquid air conveying pipeline, and set up in V3 choke valve on the liquid nitrogen reflux pipeline, be provided with 3 insulation boxes in the tower body to isolate 3 independent little cavitys and 1 main cavity, V1 choke valve, V2 choke valve, V3 choke valve set up respectively in 3 little cavitys, empty separation tower, subcooler set up in the main cavity; and pearly-luster sand is filled in the main cavity and the 3 small cavities.
As a further technical scheme, the main cavity is provided with a sand filling port I and a plurality of sand discharging ports I, the sand filling port I is arranged on the top wall of the tower body, and the sand discharging ports I are arranged on the side wall of the tower body at positions corresponding to the main cavity;
a top cover for opening or closing the sand filling port I is arranged at the sand filling port I;
and a door I for opening or closing the main cavity body is arranged at one position of the sand discharge opening.
As a further technical scheme, the isolation box is fixedly arranged on the inner wall of the tower body, the small cavity is formed by enclosing the isolation box and the inner wall of the tower body, a manhole is arranged at the position, corresponding to the small cavity, on the tower body, and a second door is arranged at the manhole.
As a further technical scheme, the upper part of the small cavity is provided with a sand filling port II, and the lower part is provided with a sand discharging port II; the second sand loading port and the second sand discharging port are arranged on the second door;
a cover plate I for opening or closing the sand filling port is arranged at the second sand filling port;
and a cover plate II for opening or closing the sand discharge port is arranged at the second sand discharge port.
As a further technical scheme, the bottom of the isolation box is also provided with a bracket, one end of the bracket is fixedly connected with the isolation box, and the other end of the bracket is fixedly connected with the tower body.
As a further technical scheme, the isolation box is provided with 1 pair of pipe penetrating ports;
the liquid air conveying pipeline, the liquid nitrogen conveying pipeline and the liquid nitrogen reflux pipeline penetrate through the 1 pair of pipe penetrating openings on the corresponding isolation boxes.
As a further technical scheme, the positions, corresponding to the pipe penetrating openings, of the liquid air conveying pipeline, the liquid nitrogen conveying pipeline and the liquid nitrogen reflux pipeline are provided with heat insulation outer covers, and the heat insulation outer covers are welded outside the corresponding pipelines and are enclosed with the corresponding pipelines to form heat insulation cavities.
As a further technical scheme, the heat insulation outer cover is welded and fixed with the corresponding pipe penetrating opening.
As a further technical scheme, a temperature sensor is arranged in the small cavity.
As a further technical scheme, the tower body is fixedly provided with a plurality of overhauling platforms, and the overhauling platforms are arranged below corresponding sand discharge openings or manholes.
As a further technical scheme, a cat ladder is arranged between the ground and the overhaul platform, between adjacent overhaul platforms and between the overhaul platform and the top wall of the tower body.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the isolation box is arranged, so that 3 independent small cavities are isolated in the tower body and are used for accommodating 3 throttle valves, and therefore, when the throttle valves are damaged and leaked, maintenance can be realized by only scraping out the pearly-luster sand in the corresponding small cavities, and all the pearly-luster sand is not required to be scraped out together, so that the maintenance workload is greatly reduced, and the maintenance time is saved. According to the utility model, the temperature sensor is arranged in the small cavity, before sand raking, whether the throttle valve leaks or not can be judged by detecting the temperature change in the small cavity, the leakage point is defined, and the targeted overhaul can be carried out without determining whether the throttle valve leaks or not after sand raking one by one.
Drawings
FIG. 1 is a perspective view of one embodiment of the present utility model;
FIG. 2 is a schematic diagram of a structure (without pearlites) according to an embodiment of the present utility model;
FIG. 3 is an enlarged view at A of FIG. 2;
FIG. 4 is a diagram of the mounting nodes of the isolation box (with pearlites) for isolating the V3 throttle in one embodiment of the utility model.
In the figure: 1. the tower body, 2, V1 throttle valve, 3, V2 throttle valve, 4, V3 throttle valve, 5, isolation box, 6, small cavity, 7, main cavity, 8, pearly-lustre sand, 9, sand loading port I, 10, sand discharging port I, 11, top cover, 12, door I, 13, manhole, 14, door II, 15, sand loading port II, 16, sand discharging port II, 17, cover plate I, 18, cover plate II, 19, bracket, 20, temperature sensor, 21, heat insulation housing, 22, heat insulation cavity, 23, air separation tower, 24, subcooler, 25, lower rectifying tower; 26. a condensing evaporator 27, an upper rectifying tower 28 and a liquid-air inlet; 29. the device comprises a first air inlet, 30, a liquid nitrogen inlet, 31, a second air inlet, 32, a liquid air outlet, 33, a medium-pressure nitrogen outlet, 34, a liquid nitrogen reflux pipeline, 35, a liquid nitrogen reflux port, 36, a nitrogen condensation pipeline, 37, a liquid air supercooling pipeline, 38, a liquid nitrogen supercooling pipeline, 39, a medium-pressure nitrogen conveying pipeline, 40, a liquid air conveying pipeline, 41, a liquid nitrogen conveying pipeline, 42, a nitrogen discharge port, 43, a polluted nitrogen discharge port, 44, an oxygen discharge port, 45, an overhaul platform, 46 and a climbing ladder.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The present utility model will be described in further detail with reference to the accompanying drawings.
An embodiment of the cryogenic air separation plant for oxygen production, as shown in fig. 1-4, comprises a tower body 1, an air separation tower 23 and a subcooler 24 which are arranged in the tower body 1, and a first air inlet 29, a second air inlet 31, a nitrogen discharge port 42, an oxygen discharge port 44 and a dirty nitrogen discharge port 43 which are arranged on the air separation tower 23, wherein the air separation tower 23 is communicated with the subcooler 24 through a liquid air conveying pipeline 40 and a liquid nitrogen conveying pipeline 41, a V1 throttle valve 2 is arranged on the liquid nitrogen conveying pipeline 41, a V2 throttle valve 3 is arranged on the liquid air conveying pipeline 40, the air separation tower 23 comprises a lower rectifying tower 25, a condensing evaporator 26 and an upper rectifying tower 27 which are sequentially arranged from bottom to top, and the condensing evaporator 26 is communicated with the lower rectifying tower 25 through a medium-pressure nitrogen conveying pipeline 39 and a liquid nitrogen reflux pipeline 34; the liquid nitrogen reflux pipeline 34 is provided with a V3 throttle valve 4, 3 isolation boxes 5 are arranged in the tower body 1, so that 3 independent small cavities 6 and 1 main cavity 7 are isolated, the V1 throttle valve 2, the V2 throttle valve 3 and the V3 throttle valve 4 are respectively arranged in the 3 small cavities 6, and the air separation tower 23 and the subcooler 24 are arranged in the main cavity 7; and the main cavity 7 and the 3 small cavities 6 are filled with pearlitic sand 8. According to the utility model, the isolation box 5 is arranged, so that 3 independent small cavities 6 are isolated in the tower body 1 and are used for accommodating 3 throttle valves, and therefore, when the throttle valves are damaged and leaked, maintenance can be realized by only pushing out the pearly-luster sand 8 in the corresponding small cavities 6, and compared with the prior art, the maintenance is realized without pushing out all the pearly-luster sand 8 together, so that the maintenance workload is greatly reduced, and the maintenance time is saved.
As an embodiment of the air separation device for cryogenic oxygen production, the main cavity 7 is provided with a sand filling port I9 and a plurality of sand discharge ports I10, the sand filling port I9 is arranged on the top wall of the tower body 1, and the sand discharge ports I10 are arranged on the side wall of the tower body 1 at positions corresponding to the main cavity 7;
a top cover 11 for opening or closing the sand filling port I9 is arranged at the sand filling port I9;
the first sand discharge openings 10 are respectively provided with a first door 12 for opening or closing the main cavity 7.
As an embodiment of the air separation device for cryogenic oxygen production, the isolation box 5 is fixedly arranged on the inner wall of the tower body 1, the small cavity 6 is formed by enclosing the isolation box 5 and the inner wall of the tower body 1,
a manhole 13 is arranged at a position, corresponding to the small cavity 6, on the tower body 1, and a second door 14 is arranged at the manhole 13.
The manhole 13 is arranged, so that an operator can conveniently enter the small cavity 6 to overhaul the throttle valve.
As one embodiment of the air separation device for cryogenic oxygen production, the upper part of the small cavity 6 is provided with a sand filling port II 15, and the lower part is provided with a sand discharging port II 16; the second sand loading port 15 and the second sand discharging port 16 are arranged on the second door 14; the arrangement of the sand filling port II 15 facilitates the filling of the pearly-luster sand 8 in the small cavity 6, and the arrangement of the sand discharge port II 16 prevents the pearly-luster sand 8 from splashing in the discharge process caused by the oversized opening compared with the sand discharge process caused by directly opening the manhole 13.
As an embodiment of the air separation device for cryogenic oxygen production, a cover plate I17 for opening or closing the sand filling port II 15 is arranged at the position of the sand filling port II;
a cover plate II 18 for opening or closing the sand discharge port II 16 is arranged at the sand discharge port II.
As an embodiment of the air separation device for cryogenic oxygen production, the bottom of the isolation box 5 is also provided with a bracket 19, one end of the bracket 19 is fixedly connected with the isolation box 5, and the other end is fixedly connected with the tower body 1.
As an embodiment of the air separation device for cryogenic oxygen production, the isolation box 5 is provided with 1 pair of pipe penetrating ports;
the liquid air conveying pipeline 40, the liquid nitrogen conveying pipeline 41 and the liquid nitrogen reflux pipeline 34 penetrate through the 1 pair of pipe penetrating ports on the corresponding isolation boxes 5.
As an embodiment of the air separation device for cryogenic oxygen production, the liquid air conveying pipeline 40, the liquid nitrogen conveying pipeline 41 and the liquid nitrogen reflux pipeline 34 are provided with heat insulation covers 21 at positions corresponding to the pipe penetrating ports, and the heat insulation covers 21 are welded outside the corresponding pipelines and are enclosed with the corresponding pipelines to form heat insulation cavities 22.
As an embodiment of the air separation unit for cryogenic oxygen production of the present utility model, the heat-insulating cover 21 is welded to the corresponding pipe orifice.
As an embodiment of the air separation unit for cryogenic oxygen production of the present utility model, a temperature sensor 20 is disposed in the small chamber 6. According to the utility model, the temperature sensor 20 is arranged in the small cavity 6, before sand skimming, whether the throttle valve leaks or not can be judged by checking the temperature change before and after liquid leakage in the small cavity 6, the leakage point is clear, and the targeted overhaul can be carried out without determining whether the throttle valve leaks or not after sand skimming one by one.
As an embodiment of the air separation device for cryogenic oxygen production, a plurality of overhaul platforms 45 are fixedly arranged outside the tower body 1, and the overhaul platforms 45 are arranged below the corresponding sand discharge port 10 or manhole 13.
As an embodiment of the air separation device for cryogenic oxygen production, a ladder stand 46 is arranged between the ground and the overhaul platform 45, between the adjacent overhaul platforms 45 and between the overhaul platform 45 and the tower top of the tower body 1.
As an embodiment of the air separation unit for cryogenic oxygen generation of the present utility model, the first air inlet 29 is provided at the middle of the upper rectifying tower 27,
the second air inlet 31 is provided at the lower part of the lower rectifying tower 25;
the nitrogen discharge port 42 is arranged at the top of the upper rectifying tower 27, and the dirty nitrogen discharge port 43 is arranged at the upper part of the upper rectifying tower 27; the oxygen discharge port 44 is provided in the lower portion of the upper rectifying column 27.
As an embodiment of the air separation device for cryogenic oxygen production, the middle part of the upper rectifying tower 27 is also provided with a liquid air inlet 28, and the upper part of the upper rectifying tower 27 is provided with a liquid nitrogen inlet 30;
the bottom of the lower rectifying tower 25 is provided with a liquid air outlet 32, the upper part of the lower rectifying tower 25 is provided with a medium-pressure nitrogen outlet 33 and a liquid nitrogen reflux port 35,
the condensing evaporator 26 is provided with a nitrogen condensing duct 36,
the subcooler 24 is provided with a liquid-air subcooling pipeline 37 and a liquid nitrogen subcooling pipeline 38;
two ends of a medium-pressure nitrogen delivery pipeline 39 are respectively communicated with the medium-pressure nitrogen outlet 33 of the lower rectifying tower 25 and the inlet end of a nitrogen condensation pipeline 36 of the condensation evaporator 26;
two ends of the liquid nitrogen reflux pipeline 34 are respectively communicated with an outlet end of a nitrogen condensing pipeline 36 of the condensing evaporator 26 and a liquid nitrogen reflux port 35 of the lower rectifying tower 25;
two ends of the liquid-air conveying pipeline 40 are respectively communicated with a liquid-air outlet 32 of the lower rectifying tower 25 and a liquid-air inlet 28 of the upper rectifying tower 27; the liquid-air supercooling pipe 37 of the supercooler 24 is disposed on the liquid-air delivery pipe 40;
two ends of the liquid nitrogen conveying pipeline 41 are respectively communicated with the liquid nitrogen reflux pipeline 34 and the liquid nitrogen inlet 30 of the upper rectifying tower 27; the liquid nitrogen supercooling pipe 38 of the supercooler 24 is provided on the liquid nitrogen delivery pipe 41.
The nitrogen-oxygen separation principle of the utility model:
the air purified and decontaminated by the utility model is divided into two parts, one part is cooled and enters a lower rectifying tower 25 of the air separation tower 23 for rectification, and the other part is cooled and adiabatically expanded and enters an upper rectifying tower 27 of the air separation tower 23 for rectification;
after the air entering the lower rectifying tower 25 is primarily separated by the lower rectifying tower 25, oxygen-enriched liquid air containing oxygen about percent is obtained at the bottom of the lower rectifying tower 25, and the purity is less than PPmO is obtained at the top of the lower rectifying tower 25 2 Medium pressure pure nitrogen gas;
the liquid air pumped out from the bottom of the lower rectifying tower 25 is supercooled by the cooler 24 and enters the upper rectifying tower 27 to participate in rectification, while after being cooled into liquid nitrogen by the medium-pressure pure nitrogen condensing evaporator 26 at the top of the lower rectifying tower 25, one part of the liquid air returns into the lower rectifying tower 25, and the other part of the liquid air enters the upper rectifying tower 27 to be rectified after being supercooled by the cooler 24.
Through the rectification of the upper rectifying tower 27, the separation of nitrogen and oxygen is realized, the nitrogen is discharged from the top of the upper rectifying tower 27, the polluted nitrogen is discharged from the upper part of the upper rectifying tower 27, and the oxygen is discharged from the bottom of the upper rectifying tower 27.
The above described embodiments are only preferred examples of the utility model and are not exhaustive of the possible implementations of the utility model. Any obvious modifications thereof, which would be apparent to those skilled in the art without departing from the principles and spirit of the present utility model, should be considered to be included within the scope of the appended claims.

Claims (10)

1. The utility model provides an air separation device for cryogenic oxygen generation, includes tower body (1), set up in empty separation tower (23), subcooler (24) in tower body (1), liquid empty transfer line (40), liquid nitrogen transfer line (41) and liquid nitrogen reflux pipeline (34), and set up V1 choke valve (2) on liquid nitrogen transfer line (41), set up V2 choke valve (3) on liquid empty transfer line (40), and set up V3 choke valve (4) on liquid nitrogen reflux pipeline (34), characterized in that, be provided with 3 insulation case (5) in tower body (1) to isolate 3 independent little cavitys (6) and 1 main cavity (7), V1 choke valve (2), V2 choke valve (3), V3 choke valve (4) set up respectively in 3 little cavitys (6), empty separation tower (23), subcooler (24) set up in main cavity (7); and pearly-luster sand (8) is filled in the main cavity (7) and the 3 small cavities (6).
2. The air separation device for cryogenic oxygen production according to claim 1, wherein a sand filling port I (9) and a plurality of sand discharging ports I (10) are arranged on the main cavity (7), the sand filling port I (9) is arranged on a top wall of the tower body (1), and the sand discharging ports I (10) are arranged on a side wall of the tower body (1) at positions corresponding to the main cavity (7);
a top cover (11) for opening or closing the sand filling port I (9) is arranged at the sand filling port I (9);
and the first sand discharge openings (10) are respectively provided with a first door (12) for opening or closing the main cavity (7).
3. The air separation device for cryogenic oxygen production according to claim 1, wherein,
the isolation box (5) is fixedly arranged on the inner wall of the tower body (1), the small cavity (6) is formed by enclosing the isolation box (5) and the inner wall of the tower body (1),
a manhole (13) is arranged at a position, corresponding to the small cavity (6), on the tower body (1), and a door two (14) is arranged at the manhole (13).
4. A space division device for cryogenic oxygen generation according to claim 3, wherein,
the upper part of the small cavity (6) is provided with a sand filling port II (15), and the lower part is provided with a sand discharging port II (16); the second sand filling port (15) and the second sand discharging port (16) are arranged on the second door (14);
a cover plate I (17) for opening or closing the sand filling port II (15) is arranged at the sand filling port II;
and a cover plate II (18) for opening or closing the sand discharge port is arranged at the sand discharge port II (16).
5. The air separation device for cryogenic oxygen production according to claim 1, wherein a bracket (19) is further arranged at the bottom of the isolation box (5), one end of the bracket (19) is fixedly connected with the isolation box (5), and the other end is fixedly connected with the tower body (1).
6. The air separation device for cryogenic oxygen production according to claim 1, wherein the isolation box (5) is provided with 1 pair of pipe penetrating ports;
the liquid air conveying pipeline (40), the liquid nitrogen conveying pipeline (41) and the liquid nitrogen backflow pipeline (34) penetrate through the 1 pair of pipe penetrating openings on the corresponding isolation boxes (5).
7. The cryogenic oxygen generation air separation device according to claim 6, wherein heat insulation covers (21) are arranged on the liquid air conveying pipeline (40), the liquid nitrogen conveying pipeline (41) and the liquid nitrogen backflow pipeline (34) at positions corresponding to the pipe penetrating openings, and the heat insulation covers (21) are welded outside the corresponding pipelines and are enclosed with the corresponding pipelines to form heat insulation cavities (22).
8. A cryogenic oxygen generating air separation plant according to claim 7, characterized in that the heat insulation cover (21) is welded to the corresponding pipe orifice.
9. The air separation device for cryogenic oxygen production according to claim 1, wherein,
a temperature sensor (20) is arranged in the small cavity (6).
10. The air separation device for cryogenic oxygen production according to claim 1, wherein,
a plurality of overhaul platforms (45) are fixedly arranged outside the tower body (1), and the overhaul platforms (45) are arranged below the corresponding sand discharge openings (10) or the corresponding manholes (13);
and a crawling ladder (46) is arranged between the ground and the overhaul platform (45), between adjacent overhaul platforms (45) and between the overhaul platform (45) and the top wall of the tower body (1).
CN202223496124.2U 2022-12-27 2022-12-27 Air separation device for cryogenic oxygen production Active CN218895581U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223496124.2U CN218895581U (en) 2022-12-27 2022-12-27 Air separation device for cryogenic oxygen production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223496124.2U CN218895581U (en) 2022-12-27 2022-12-27 Air separation device for cryogenic oxygen production

Publications (1)

Publication Number Publication Date
CN218895581U true CN218895581U (en) 2023-04-21

Family

ID=85995671

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223496124.2U Active CN218895581U (en) 2022-12-27 2022-12-27 Air separation device for cryogenic oxygen production

Country Status (1)

Country Link
CN (1) CN218895581U (en)

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