CN116817541B - Medical oxygen filling process blowdown gas recovery device - Google Patents

Medical oxygen filling process blowdown gas recovery device Download PDF

Info

Publication number
CN116817541B
CN116817541B CN202311109696.7A CN202311109696A CN116817541B CN 116817541 B CN116817541 B CN 116817541B CN 202311109696 A CN202311109696 A CN 202311109696A CN 116817541 B CN116817541 B CN 116817541B
Authority
CN
China
Prior art keywords
gas
baffle
rotating shaft
top area
tower
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202311109696.7A
Other languages
Chinese (zh)
Other versions
CN116817541A (en
Inventor
李文跃
缪成林
刘慧黠
辛峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qiqihar Liming Gas Co ltd
Original Assignee
Qiqihar Liming Gas Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qiqihar Liming Gas Co ltd filed Critical Qiqihar Liming Gas Co ltd
Priority to CN202311109696.7A priority Critical patent/CN116817541B/en
Publication of CN116817541A publication Critical patent/CN116817541A/en
Application granted granted Critical
Publication of CN116817541B publication Critical patent/CN116817541B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/005—Pipe-line systems for a two-phase gas-liquid flow
    • 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
    • F25J3/044—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 single pressure main column system only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/52—Mechanical actuating means with crank, eccentric, or cam
    • F16K31/528—Mechanical actuating means with crank, eccentric, or cam with pin and slot
    • F16K31/5286—Mechanical actuating means with crank, eccentric, or cam with pin and slot comprising a sliding valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
    • 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
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed air
    • 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
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
    • F25J3/0426—The cryogenic component does not participate in the fractionation
    • 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
    • F25J3/04896—Details of columns, e.g. internals, inlet/outlet devices
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/04—Mixing or blending of fluids with the feed stream
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/42—Nitrogen
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/50—Oxygen

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The invention relates to the technical field of oxygen recovery, and discloses a medical oxygen filling process emptying gas recovery device, which comprises a rectifying tower, wherein a liquid inlet pipe is arranged on the rectifying tower, the other end of the liquid inlet pipe is communicated with an input air source and a recovery gas source, the liquid inlet pipe is used for injecting liquid mixed gas of the input air and the recovery gas into the rectifying tower, a liquid outlet pipe is arranged at the bottom of the rectifying tower, a reboiler is arranged at the other end of the liquid outlet pipe, and the output end of the reboiler is connected with an air inlet pipe; according to the invention, the temperature in the top area of the rectifying tower is reduced and regulated until the temperature in the top area is lower than the boiling point temperature of oxygen and higher than the boiling point temperature of nitrogen, so that the oxygen mixed with the nitrogen in the top area is condensed and stuck on the inner wall of the rectifying tower in the top area, the oxygen in the top area is separated from the nitrogen, and the purity of the nitrogen output in the top area is improved.

Description

Medical oxygen filling process blowdown gas recovery device
Technical Field
The invention relates to the field of oxygen recovery, in particular to a medical oxygen filling process venting gas recovery device.
Background
The filling of medical oxygen generally needs to ensure that the oxygen content in a filling pipeline reaches 99.6% or more and then the medical oxygen filling state can be achieved, and medical oxygen cylinders qualified in cleaning and disinfection treatment also need to be subjected to gas washing, so that the medical oxygen cylinders can be filled with oxygen only according to filling standards, when the medical oxygen cylinders are subjected to gas washing, high-purity oxygen is required to be firstly filled into each steel cylinder, when the pressure in the cylinders reaches 0.7MPa, an air-out valve is opened, the oxygen in the cylinders is completely exhausted, the oxygen is replaced for two times, the air possibly existing in the cylinders is completely replaced, and then the medical oxygen in each oxygen cylinder can be filled according to the standards.
In the current whole oxygen filling process, because oxygen is not harmful gas, the atmospheric gases are directly discharged at the present stage, and although the oxygen content in the atmospheric gases does not reach the medical standard, the oxygen content in the gases is quite high, and the direct discharge leads to resource waste, so in order to avoid waste, a person skilled in the art usually adds a suction device in the medical oxygen filling room to recover the atmospheric gases (high oxygen) in the filling room.
The recycled vent gas, though the oxygen ratio is higher than that of air, can not be directly used as an oxygen product, and the vent gas needs to be further separated and purified to obtain the oxygen product which can be used.
The separation of liquid air is a preparation method of oxygen, and is a physical method, and the principle is that the boiling point of nitrogen in air is lower than that of oxygen (the boiling point of oxygen is minus 183 ℃ and the boiling point of nitrogen is minus 196 ℃); because the air ratio in the vent gas recovered in the medical oxygen filling process is not small, in order to improve the separation efficiency, the recovered vent gas is mixed with the input air in the liquid air separation method to form mixed gas to be input into the rectifying tower for separation and purification, but because the concentration of the mixed gas is higher than that of the pure input air before, the oxygen content which can be separated by the mixed gas input into the rectifying tower in the same volume is different from that of the air input into the rectifying tower in the same volume, the oxygen content which can be separated by the mixed gas is far higher than that of the air, so that in the rectifying tower, the oxygen content which can be separated between bottom layer tower plates is more, the nitrogen content which can be separated between top layer tower plates is reduced along with the increase of the oxygen content between the bottom layer tower plates, the air pressure in the bottom area is higher than that of the input air, so that the oxygen in the bottom layer area can be input into the top area and the nitrogen are mixed, the purity of the nitrogen is reduced, and the obtained nitrogen product cannot reach the expected purity under the process is caused.
Disclosure of Invention
The invention provides a device for recycling vent gas in a medical oxygen filling process, which solves the technical problem that the nitrogen product obtained cannot reach the expected purity due to the fact that oxygen is mixed in a nitrogen separation zone in the top area of a rectifying tower in the related technology.
The invention provides a medical oxygen filling process emptying gas recovery device, which comprises a rectifying tower, wherein a liquid inlet pipe is arranged on the rectifying tower, the other end of the liquid inlet pipe is communicated with an input air source and a recovery gas source, the liquid inlet pipe is used for injecting liquid mixed gas of input air and recovery gas into the rectifying tower, a liquid outlet pipe is arranged at the bottom of the rectifying tower, a reboiler is arranged at the other end of the liquid outlet pipe, the output end of the reboiler is connected with an air inlet pipe, the other end of the air inlet pipe is communicated with the interior of the rectifying tower, a first air outlet pipe is arranged at the top of the rectifying tower, and a condenser is arranged at the other end of the first air outlet pipe;
the inside of rectifying column installs a plurality of vertical column plates, the region between two adjacent column plates is the gas-liquid contact region, the closing plate is installed at the inner chamber top of rectifying column, the closing plate is located the top of column plate, be the top region between the column plate and the closing plate that are located the rectifying column top, it has two ventholes that intermittently open and close to run through on the closing plate, install temperature regulation and control unit on the rectifying column, temperature regulation and control unit corresponds with the top region and arranges, temperature regulation and control unit includes the sleeve pipe, sleeve pipe fixed mounting is on rectifying column outer wall, install cold source entry and cold source export on the sleeve pipe, cold source gas enters into the sleeve pipe from the cold source entry, discharge from the cold source export, regulate and control the temperature in the top region, make the temperature in the top region be less than the boiling temperature of oxygen and be higher than the boiling temperature of nitrogen gas.
In a preferred embodiment, the temperature regulation unit further comprises a temperature sensor, the detection end of the temperature sensor is located in the top area, and the temperature sensor is used for monitoring the temperature in the top area in real time.
In a preferred embodiment, a mixing mechanism is mounted in the top region, the mixing mechanism comprising a first shaft, the first shaft being rotatably mounted on the tray, a driving member mounted at a bottom end of the first shaft for driving the first shaft to rotate, a cross bar mounted at a top end of the first shaft, the cross bar rotating in the top region when the first shaft rotates to agitate the gas in the top region.
In a preferred embodiment, a scraping rod is mounted at the end of the cross rod, which is far away from the first rotating shaft, the scraping rod is in contact with the inner wall of the rectifying tower in the top area, the length direction of the scraping rod is obliquely arranged with the axial direction of the first rotating shaft, and when the first rotating shaft rotates, the scraping rod scrapes down liquid on the inner wall of the rectifying tower.
In a preferred embodiment, the sealing plate is provided with an opening and closing mechanism, the opening and closing mechanism comprises a first baffle and a second baffle which are arranged in parallel, two air outlet holes are also formed in the two air outlet holes, guide rods are respectively arranged on the first baffle and the second baffle in a sliding mode, the first baffle and the second baffle are respectively arranged on the two guide rods in a sliding mode, the first baffle and the second baffle are respectively matched with the air outlet holes, the sealing plate is further provided with a transmission mechanism, and the transmission mechanism is used for driving the first baffle and the second baffle to slide along the guide rods to open or close the air outlet holes.
In a preferred embodiment, the transmission mechanism comprises a turntable, the turntable is rotatably mounted on the sealing plate, a convex tooth is mounted on the periphery of the turntable, a first groove is formed in one side, close to the second baffle, of the first baffle, a second groove is formed in one side, close to the first baffle, of the second baffle, the convex tooth is matched with the first groove and the second groove, when the turntable rotates, the convex tooth is matched with the first groove to drive the first baffle to slide along the guide rod, and when the convex tooth is matched with the second groove, the second baffle is driven to slide along the guide rod.
In a preferred embodiment, the transmission mechanism further comprises a second rotating shaft, the second rotating shaft is fixedly arranged on the rotary table, the second rotating shaft and the rotary table are coaxially arranged, a gear is arranged on the second rotating shaft, a limit sleeve is arranged on the sealing plate, a rack is slidably arranged on the limit sleeve and is connected with the gear in a meshed mode, a bar frame is arranged at the bottom of the rack, the length direction of the rack is vertically distributed with the length direction of the bar frame, a vertical rod is fixedly connected to the top of the cross rod, the other end of the vertical rod is movably arranged in the bar frame, when the first rotating shaft rotates, the vertical rod reciprocates in the bar frame, and the rack is driven to reciprocate along the length direction of the limit sleeve, so that the gear is driven to rotate.
In a preferred embodiment, a second air outlet pipe is installed on the rectifying tower, the output end of the second air outlet pipe is connected with the input end of the oxygen bottle, and the height of the second air outlet pipe is lower than that of the first air outlet pipe.
In a preferred embodiment, the inlet of the feed pipe is connected to two compressors, the inlet of which is connected to an inlet pump, one of the compressors being for compressing the recovery gas into a liquid recovery gas and the other compressor being for compressing the inlet air into liquid air.
In a preferred embodiment, the liquid outlet pipe is provided with two output ends, one output end of the liquid outlet pipe is connected with the reboiler, the other output end of the liquid outlet pipe is connected with the tower kettle, and the output end of the tower kettle is connected with the input end of the reboiler.
The invention has the beneficial effects that: according to the invention, the temperature in the top area of the rectifying tower is reduced and regulated until the temperature in the top area is lower than the boiling point temperature of oxygen and higher than the boiling point temperature of nitrogen, so that the oxygen mixed with the nitrogen in the top area is condensed and stuck on the inner wall of the rectifying tower in the top area, the oxygen in the top area is separated from the nitrogen, and the purity of the nitrogen output in the top area is improved; on the other hand, the temperature of the top area is reduced, so that oxygen can be reliquefied again, the air pressure in the top area can be reduced, the pressure difference between the top area and the area below the rectifying tower is increased, heating-generated gas in the area below the rectifying tower is conveniently increased, and the nitrogen separation efficiency is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic perspective view of the rectifying tower of the present invention.
FIG. 3 is a schematic diagram showing a front sectional structure of the rectifying column of the present invention.
Fig. 4 is a schematic view of the first state of the cooperation of the mixing mechanism and the opening and closing mechanism according to the present invention.
Fig. 5 is a schematic view showing a second state where the mixing mechanism and the opening and closing mechanism of the present invention are engaged.
Fig. 6 is an enlarged schematic view of the structure of fig. 4 a in accordance with the present invention.
Fig. 7 is a schematic bottom view of the combination of the mixing mechanism and the opening and closing mechanism of the present invention.
Fig. 8 is a schematic view of the mixing mechanism of fig. 7 rotated 90 degrees counterclockwise in accordance with the present invention.
Fig. 9 is a schematic side view of the mixing mechanism and the opening and closing mechanism of the present invention.
Fig. 10 is a schematic elevational view of the combination of the mixing mechanism and the opening and closing mechanism of the present invention.
In the figure: 1. a rectifying tower; 110. a tray; 120. a sealing plate; 121. an air outlet hole; 122. a limit sleeve; 11. a liquid inlet pipe; 12. an air inlet pipe; 13. a liquid outlet pipe; 14. the first air outlet pipe is arranged; 15. a gas-liquid contact region; 2. a temperature control unit; 21. a sleeve; 22. a cold source inlet; 3. a mixing mechanism; 31. a first rotating shaft; 32. a cross bar; 33. a scraping rod; 4. an opening and closing mechanism; 41. a first baffle; 411. a first groove; 42. a second baffle; 421. a second groove; 43. a guide rod; 5. a transmission mechanism; 51. a turntable; 511. convex teeth; 52. a second rotating shaft; 521. a gear; 53. a rack; 54. a bar frame; 55. a vertical rod; 100. an input pump; 200. a compressor; 300. a reboiler; 400. a condenser; 500. and (3) a tower kettle.
Detailed Description
The subject matter described herein will now be discussed with reference to example embodiments. It is to be understood that these embodiments are merely discussed so that those skilled in the art may better understand and implement the subject matter described herein and that changes may be made in the function and arrangement of the elements discussed without departing from the scope of the disclosure herein. Various examples may omit, replace, or add various procedures or components as desired. In addition, features described with respect to some examples may be combined in other examples as well.
As shown in fig. 1-10, the device for recycling the emptying gas in the medical oxygen filling process comprises a rectifying tower 1, wherein a liquid inlet pipe 11 is arranged on the rectifying tower 1, the other end of the liquid inlet pipe 11 is communicated with an input air source and a recycling gas source, the liquid inlet pipe 11 is used for injecting liquid mixed gas of the input air and the recycling gas into the rectifying tower 1, a liquid outlet pipe 13 is arranged at the bottom of the rectifying tower 1, a reboiler 300 is arranged at the other end of the liquid outlet pipe 13, an output end of the reboiler 300 is connected with an air inlet pipe 12, the other end of the air inlet pipe 12 is communicated with the inside of the rectifying tower 1, an air outlet pipe I14 is arranged at the top of the rectifying tower 1, and a condenser 400 is arranged at the other end of the air outlet pipe I14.
The rectifying tower 1 is provided with a second air outlet pipe, the output end of the second air outlet pipe is connected with the input end of the oxygen bottle, and the height of the second air outlet pipe is lower than that of the first air outlet pipe 14.
The input end of the liquid inlet pipe 11 is connected with two compressors 200, the input end of the compressor 200 is connected with an input pump 100, one compressor 200 is used for compressing the recovered gas into liquid recovered gas, and the other compressor 200 is used for compressing the input air into liquid air.
The drain pipe 13 is provided with two output ends, and one output end of the drain pipe 13 is connected with the reboiler 300, and another output end of the drain pipe 13 is connected with the tower kettle 500, and the output end of the tower kettle 500 is connected with the input end of the reboiler 300.
The inside of rectifying column 1 is installed a plurality of vertical column plates 110, the region between two adjacent column plates 110 is gas-liquid contact region 15, closing plate 120 is installed at the inner chamber top of rectifying column 1, closing plate 120 is located the top of column plate 110, be the top region between column plate 110 and the closing plate 120 that is located the top in rectifying column 1, two intermittent on-off's ventholes 121 are run through on the closing plate 120, install temperature regulation and control unit 2 on rectifying column 1, temperature regulation and control unit 2 corresponds with the top region and arranges, temperature regulation and control unit 2 includes sleeve pipe 21, sleeve pipe 21 fixed mounting is on rectifying column 1 outer wall, install cold source entry 22 and cold source export on the sleeve pipe 21, cold source gas enters into sleeve pipe 21 from cold source entry 22, discharge from the cold source export, regulate and control the temperature in the top region, make the temperature in the top region be less than the boiling point temperature of oxygen and be higher than the boiling point temperature of nitrogen gas.
The temperature regulation and control unit 2 further comprises a temperature sensor, wherein a detection end of the temperature sensor is positioned in the top area, and the temperature sensor is used for monitoring the temperature in the top area in real time.
In the present invention, the recovered gas and the input air are mixed before passing through the liquid inlet pipe 11, and the pipeline of the recovered gas into the rectifying tower 1 is different from the pipeline of the input air into the rectifying tower 1, specifically, the recovered gas or the input air is filtered to remove dust in the gas through a filter, then pressurized by the compressor 200, then the pressurized gas is injected into the refrigerating device and cooled by liquid nitrogen, the compressed cold air is expanded to be liquid air with the temperature of 200 ℃ below zero, and then enters the rectifying tower 1, but in the present embodiment, the gas injected into the rectifying tower 1 is the mixed gas of the recovered gas and the input air, and then the liquid gas of the recovered gas and the input air is injected into the rectifying tower 1 through the liquid inlet pipe 11 after being mixed before being injected into the rectifying tower 1.
It should be noted that, when the temperature of the reboiler 300 of the rectifying tower 1 increases to-196 degrees celsius (the boiling point of nitrogen), nitrogen is separated, and when the temperature of the reboiler 300 of the rectifying tower 1 increases to-183 degrees celsius (the boiling point of oxygen), oxygen is separated, wherein the nitrogen is lower than the oxygen due to the boiling point, so the first outlet pipe 14 of the nitrogen is positioned at the top of the rectifying tower 1, i.e. on the top area, above the sealing plate 120, the second outlet pipe of the oxygen is positioned in the middle of the rectifying tower 1, i.e. between two adjacent trays 110, below the first outlet pipe 14; therefore, the invention can separate the nitrogen and the oxygen in the mixed gas based on practice.
It should be further noted that, the temperature control unit 2 further includes a control system, where the control system obtains a control effect of the cold source gas on the top area based on the temperature in the top area received by the temperature sensor, and then controls a flow rate of the cold source gas (liquid nitrogen) in the sleeve 21 based on the control effect, for example, when the temperature in the top area measured by the temperature sensor does not reach a preset temperature interval, the flow rate of the cold source gas in the sleeve 21 is accelerated to take away more heat in the top area, so as to improve a temperature reduction degree in the top area; the temperature sensors can be arranged in a plurality, the detection ends of the temperature sensors are uniformly distributed in the top area, and the control system judges the regulation and control effect of the temperature regulation and control unit 2 based on the detection results of the temperature sensors, so that the regulation and control function of the temperature regulation and control unit 2 is more accurate.
In this embodiment, the implementation scenario specifically includes: firstly, arranging all pipelines, introducing the mixed liquid gas of the recovered gas and the input air onto the column plate 110, enabling the mixed liquid gas to flow downwards from the column plate 110, and enabling the reboiler 300 to evaporate nitrogen with a lower boiling point firstly, so that the nitrogen rises to contact with the mixed liquid flowing downwards, contact between a liquid phase and a gas phase is realized, mass transfer is carried out, and the separation effect is improved; by arranging a sealing plate 120 at the top of the inner cavity of the rectifying tower 1, a closed space is formed in the top area relative to the area between two adjacent tower plates 110 below, and evaporated nitrogen stays and gathers temporarily in the top area;
then, a temperature regulation and control unit 2 arranged in the top area of the rectifying tower 1 injects cold source gas into the sleeve 21 through a cold source inlet 22 to change the temperature of the tower wall of the rectifying tower 1, so as to cool and regulate the temperature of the top area inside the rectifying tower, and the temperature in the top area is monitored in real time by combining with a temperature sensor until the temperature in the top area is lower than the boiling point temperature of oxygen and higher than the boiling point temperature of nitrogen, so that the oxygen mixed with the nitrogen in the top area is condensed and stuck on the inner wall of the rectifying tower 1 in the top area when encountering cold, the oxygen in the top area is separated from the nitrogen, and the purity of the nitrogen output in the top area is further improved; on the other hand, the temperature in the top area is reduced, so that not only can oxygen be liquefied again, but also the air pressure in the top area can be reduced, the pressure difference between the top area and the area below the rectifying tower 1 is increased, and the pressure difference is increased, so that the heating gas in the area below the rectifying tower 1 is conveniently increased, and the nitrogen separation efficiency is improved.
In one embodiment of the present invention, the mixing mechanism 3 is installed in the top area, the mixing mechanism 3 includes a first rotating shaft 31, the first rotating shaft 31 is rotatably installed on the tray 110, a driving member is installed at the bottom end of the first rotating shaft 31 to drive the first rotating shaft 31 to rotate, a cross bar 32 is installed at the top end of the first rotating shaft 31, and when the first rotating shaft 31 rotates, the cross bar 32 rotates in the top area to stir the gas in the top area.
It should be noted that, the driving member is a motor or other devices capable of driving the first rotating shaft 31 to rotate; the first rotating shaft 31 rotates to drive the cross rod 32 to rotate in the top area, agitate nitrogen in the top area, accelerate nitrogen flow in the top area, enable gas to be sufficiently and uniformly cooled by the temperature regulating unit 2, and be favorable for improving oxygen condensation effect in the top area and assisting nitrogen purification.
In one embodiment of the present invention, a scraping rod 33 is mounted at the end of the cross bar 32 far from the first rotating shaft 31, the scraping rod 33 contacts with the inner wall of the rectifying tower 1 in the top area, the length direction of the scraping rod 33 is inclined to the axial direction of the first rotating shaft 31, and when the first rotating shaft 31 rotates, the scraping rod 33 scrapes the liquid on the inner wall of the rectifying tower 1.
The scraping rod 33 is made of a soft material, such as rubber, sponge, etc.; when the inclined scraping rod 33 rotates, the liquid on the inner wall of the rectifying tower 1 can be scraped by the scraping rod 33, and the scraped liquid has a component force in the vertical direction, so that the liquid can flow onto the tower plate 110 along the tower wall to be mixed with the mixed liquid gas again, the technical problem that condensed oxygen is adhered to the tower wall, a diaphragm layer is formed between the tower walls of the rectifying tower 1, the cooling effect of the top area is reduced, and the temperature regulation is affected is solved.
In one embodiment of the present invention, an opening and closing mechanism 4 is installed on the sealing plate 120, the opening and closing mechanism 4 includes a first baffle 41 and a second baffle 42 which are arranged in parallel, two air outlets 121 are also provided, guide rods 43 are slidably provided on the two air outlets 121, the first baffle 41 and the second baffle 42 are slidably provided on the two guide rods 43, the first baffle 41 and the second baffle 42 are adapted to the air outlets 121, a transmission mechanism 5 is also installed on the sealing plate 120, and the transmission mechanism 5 is used for driving the first baffle 41 and the second baffle 42 to slide along the guide rods 43 to open or close the air outlets 121.
The intermittent opening of the air outlet holes 121 facilitates the formation of a closed area in the top area in a short time, so that the nitrogen stays in the area for a short time, and the purification of the stay nitrogen is facilitated.
In one embodiment of the present invention, the transmission mechanism 5 includes a turntable 51, the turntable 51 is rotatably mounted on the sealing plate 120, a convex tooth 511 is mounted on the periphery of the turntable 51, a first slot 411 is formed on a side of the first baffle 41 adjacent to the second baffle 42, a second slot 421 is formed on a side of the second baffle 42 adjacent to the first baffle 41, the convex tooth 511 is adapted to both the first slot 411 and the second slot 421, when the turntable 51 rotates, the convex tooth 511 is matched with the first slot 411 to drive the first baffle 41 to slide along the guide rod 43, and when the convex tooth 511 is matched with the second slot 421, the second baffle 42 is driven to slide along the guide rod 43.
The transmission mechanism 5 further comprises a second rotating shaft 52, the second rotating shaft 52 is fixedly arranged on the rotary table 51, the second rotating shaft 52 and the rotary table 51 are coaxially arranged, a gear 521 is arranged on the second rotating shaft 52, a limit sleeve 122 is arranged on the sealing plate 120, a rack 53 is slidably arranged on the limit sleeve 122, the rack 53 is connected with the gear 521 in a meshed mode, a bar frame 54 is arranged at the bottom of the rack 53, the length direction of the rack 53 is vertically distributed with the length direction of the bar frame 54, a vertical rod 55 is fixedly connected to the top of the cross rod 32, the other end of the vertical rod 55 is movably arranged in the bar frame 54, when the first rotating shaft 31 rotates, the vertical rod 55 reciprocates in the bar frame 54, and the rack 53 is driven to reciprocate along the length direction of the limit sleeve 122, so that the gear 521 is driven to rotate.
It should be noted that, the rotation of the first rotating shaft 31 drives the cross bar 32 to rotate, the cross bar 32 drives the vertical rod 55 to make a circular motion around the first rotating shaft 31, and because the rack 53 and the bar frame 54 are limited and guided by the limiting sleeve 122, when the vertical rod 55 makes a circular motion, the bar frame 54 is driven by the rack 53 to drive the rack 53 to reciprocate along the length direction of the rack 53, along with the reciprocation of the rack 53, the rack 53 is meshed with the gear 521, when the rack 53 moves from the leftmost end to the rightmost end, the gear 521 just rotates forward for one circle, when the rack 53 moves from the rightmost end to the leftmost end, the gear 521 just rotates backward for one circle, the state of fig. 7 is described as an initial state, the first rotating shaft 31 rotates anticlockwise, the bar frame 54 and the rack 53 transversely move leftmost (leftmost side), the gear 521 rotates forward (anticlockwise), the second rotating shaft 52 drives the turntable 51 to rotate anticlockwise, so that the convex tooth 511 is matched with the first groove 411 on the first baffle 41, and then the turntable 51 continues rotating after being matched, the turntable 51 moves left, so that the first baffle 41 is pushed to open, the air outlet hole 121 is opened, and the nitrogen gas can be discharged from the air outlet area 121 into the air outlet area 400; when the convex tooth 511 is disengaged from the first slot 411, the convex tooth 511 continues to rotate, before the convex tooth 511 is not engaged with the second slot 421, both air outlet holes 121 are opened at this time, when the convex tooth 511 continues to rotate and engage with the second slot 421, the second baffle plate 42 is pushed to move right, the lower air outlet hole 121 is closed, only the upper air outlet hole 121 is opened at this time, the discharge amount and the discharge speed of nitrogen in the top area can be limited, and when the turntable 51 rotates 360 degrees, the right end of the rack 53 is engaged with the gear 521, the bar frame 54 also moves to the leftmost side, the vertical rod 55 is positioned in the middle of the chute in the bar frame 54, the vertical rod 55 drives the bar frame 54 to move right (leftmost side to rightmost side) along with the continued rotation of the first rotary shaft 31, the gear 521 starts to rotate clockwise, that is, the turntable 51 starts to rotate clockwise, the convex teeth 511 are matched with the second groove 421 on the second baffle 42, the second baffle 42 is pushed to move left along the guide rod 43 along with the rotation of the convex teeth 511, the lower air outlet holes 121 are opened, after the convex teeth 511 are separated from the second groove 421, the convex teeth 511 continue to rotate, before the convex teeth 511 are not matched with the first groove 411, the two air outlet holes 121 are opened, the discharge amount and the discharge speed of nitrogen in the top area are fastest, after the convex teeth 511 continue to rotate and are matched with the first groove 411, the first baffle 41 is pushed to move right along with the clockwise rotation of the convex teeth 511, the upper air outlet holes 121 are closed, and at the moment, only the lower air outlet holes 121 are opened, and the discharge amount and the discharge speed of nitrogen in the top area are limited.
The invention provides a transmission mechanism 5 which drives the two air outlet holes 121 on the sealing plate 120 to intermittently open during the rotation of the first rotating shaft 31, so as to regulate and control the discharge amount and the discharge speed of nitrogen in the top area.
The embodiment has been described above with reference to the embodiment, but the embodiment is not limited to the above-described specific implementation, which is only illustrative and not restrictive, and many forms can be made by those of ordinary skill in the art, given the benefit of this disclosure, are within the scope of this embodiment.

Claims (6)

1. The utility model provides a medical oxygen fills atmospheric gas recovery unit of dress process, its characterized in that includes rectifying column (1), install feed liquor pipe (11) on rectifying column (1), feed liquor pipe (11)'s output and rectifying column (1) intercommunication, feed liquor pipe (11)'s input and input air source and recovery gas source intercommunication, feed liquor pipe (11) are used for injecting liquid input air and recovery gas's mixed gas into rectifying column (1), drain pipe (13) are installed to rectifying column (1)'s bottom, drain pipe (13)'s input and rectifying column (1) intercommunication, reboiler (300) are installed to drain pipe (13)'s output, just reboiler (13)'s output and rectifying column (300) input intercommunication, reboiler (300)'s output is connected with intake pipe (12), and intake pipe (12)'s output and intake pipe (12) input intercommunication, intake pipe (12) output and rectifying column (1) internally-mounted, a rectifying column (14) and rectifying column (14) are installed to outlet pipe (13), a rectifying column (14) is installed to a rectifying column (14), the output end of the first air outlet pipe (14) is communicated with the input end of the condenser (400);
the inside of the rectifying tower (1) is provided with a plurality of vertically arranged tower plates (110), the area between two adjacent tower plates (110) is a gas-liquid contact area (15), the top of the inner cavity of the rectifying tower (1) is provided with a sealing plate (120), the sealing plate (120) is positioned above the tower plates (110), the space between the uppermost tower plate (110) and the sealing plate (120) in the rectifying tower (1) is a top area, two intermittently opened and closed gas outlet holes (121) are penetrated through the sealing plate (120), the rectifying tower (1) is provided with a temperature regulating unit (2), the temperature regulating unit (2) is correspondingly arranged with the top area, the temperature regulating unit (2) comprises a sleeve (21), the sleeve (21) is fixedly arranged on the outer wall of the rectifying tower (1), a cold source inlet (22) and a cold source outlet are arranged on the sleeve (21), cold source gas enters the sleeve (21) from the cold source inlet, is discharged from the cold source outlet, and the temperature in the top area is lower than the temperature in the top area and is lower than the boiling point area of nitrogen;
the mixing mechanism (3) is arranged in the top area, the mixing mechanism (3) comprises a first rotating shaft (31), the first rotating shaft (31) is rotatably arranged on the tower plate (110), a driving piece is arranged at the bottom end of the first rotating shaft (31) and is used for driving the first rotating shaft (31) to rotate, a cross rod (32) is arranged at the top end of the first rotating shaft (31), and when the first rotating shaft (31) rotates, the cross rod (32) rotates in the top area and stirs gas in the top area;
the sealing plate (120) is provided with an opening and closing mechanism (4), the opening and closing mechanism (4) comprises a first baffle (41) and a second baffle (42) which are arranged in parallel, two air outlet holes (121) are also formed, guide rods (43) are arranged on the two air outlet holes (121) in a sliding mode, the first baffle (41) and the second baffle (42) are respectively arranged on the two guide rods (43) in a sliding mode, the first baffle (41) and the second baffle (42) are matched with the air outlet holes (121), the sealing plate (120) is also provided with a transmission mechanism (5), and the transmission mechanism (5) is used for driving the first baffle (41) and the second baffle (42) to slide along the guide rods (43) to open or close the air outlet holes (121);
the transmission mechanism (5) comprises a rotary table (51), the rotary table (51) is rotatably arranged on the sealing plate (120), a convex tooth (511) is arranged on the periphery of the rotary table (51), a first groove (411) is formed in one side, close to a second baffle (42), of the first baffle (41), a second groove (421) is formed in one side, close to the first baffle (41), of the second baffle (42), the convex tooth (511) is matched with the first groove (411) and the second groove (421), when the rotary table (51) rotates, the convex tooth (511) drives the first baffle (41) to slide along the guide rod (43) when being matched with the first groove (411), and drives the second baffle (42) to slide along the guide rod (43) when the convex tooth (511) is matched with the second groove (421);
the transmission mechanism (5) further comprises a second rotating shaft (52), the second rotating shaft (52) is fixedly arranged on the rotating disc (51), the second rotating shaft (52) and the rotating disc (51) are coaxially arranged, a gear (521) is arranged on the second rotating shaft (52), a limit sleeve (122) is arranged on the sealing plate (120), a rack (53) is slidably arranged on the limit sleeve (122), the rack (53) is connected with the gear (521) in a meshed mode, a bar frame (54) is arranged at the bottom of the rack (53), the length direction of the rack (53) is vertically distributed with the length direction of the bar frame (54), a vertical rod (55) is fixedly connected to the top of the cross rod (32), the other end of the vertical rod (55) is movably arranged in the bar frame (54), and when the first rotating shaft (31) rotates, the vertical rod (55) reciprocates in the bar frame (54) to drive the rack (53) to reciprocate along the length direction of the limit sleeve (122), so that the gear (521) is driven to rotate.
2. The medical oxygen filling process venting gas recovery device according to claim 1, wherein the temperature regulation unit (2) further comprises a temperature sensor, the detection end of the temperature sensor is located in the top area, and the temperature sensor is used for monitoring the temperature in the top area in real time.
3. The medical oxygen filling process venting gas recovery device according to claim 2, wherein a scraping rod (33) is installed at the end of the cross rod (32) far away from the first rotating shaft (31), the scraping rod (33) is in contact with the inner wall of the rectifying tower (1) in the top area, the length direction of the scraping rod (33) is obliquely arranged with the axial direction of the first rotating shaft (31), and when the first rotating shaft (31) rotates, the scraping rod (33) scrapes down liquid on the inner wall of the rectifying tower (1).
4. The medical oxygen filling process emptying gas recovery device according to claim 3, wherein a second gas outlet pipe is installed on the rectifying tower (1), the output end of the second gas outlet pipe is connected with the input end of the oxygen cylinder, and the height of the second gas outlet pipe is lower than that of the first gas outlet pipe (14).
5. The medical oxygen filling process venting gas recovery device according to claim 4, wherein the input end of the liquid inlet pipe (11) is connected with two compressors (200), the input end of the compressors (200) is connected with an input pump (100), one of the compressors (200) is used for compressing the recovered gas into liquid recovered gas, and the other compressor (200) is used for compressing the input air into liquid air.
6. The medical oxygen filling process venting gas recovery device according to claim 5, wherein the liquid outlet pipe (13) is provided with two output ends, one output end of the liquid outlet pipe (13) is connected with the reboiler (300), the other output end of the liquid outlet pipe (13) is connected with a tower kettle (500), and the output end of the tower kettle (500) is connected with the input end of the reboiler (300).
CN202311109696.7A 2023-08-31 2023-08-31 Medical oxygen filling process blowdown gas recovery device Active CN116817541B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311109696.7A CN116817541B (en) 2023-08-31 2023-08-31 Medical oxygen filling process blowdown gas recovery device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311109696.7A CN116817541B (en) 2023-08-31 2023-08-31 Medical oxygen filling process blowdown gas recovery device

Publications (2)

Publication Number Publication Date
CN116817541A CN116817541A (en) 2023-09-29
CN116817541B true CN116817541B (en) 2023-11-10

Family

ID=88139619

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311109696.7A Active CN116817541B (en) 2023-08-31 2023-08-31 Medical oxygen filling process blowdown gas recovery device

Country Status (1)

Country Link
CN (1) CN116817541B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB386205A (en) * 1931-05-20 1933-01-12 Mathias Frankl Process for the partial separation of gaseous mixtures
WO1993021488A1 (en) * 1992-04-13 1993-10-28 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Ultra-high purity nitrogen and oxygen generator
DE10139727A1 (en) * 2001-08-13 2003-02-27 Linde Ag Method and device for obtaining a printed product by low-temperature separation of air
CN101027527A (en) * 2004-08-03 2007-08-29 圣波尔股份有限公司 Energy efficient, inexpensive extraction of oxygen from ambient air for portable and home use
CN102252500A (en) * 2011-05-09 2011-11-23 浙江新锐空分设备有限公司 Method for utilizing oxygen-nitrogen liquefaction device to prepare high-purity oxygen
CN102442647A (en) * 2011-09-30 2012-05-09 浙江新锐空分设备有限公司 Method for preparing high-purity oxygen from liquid oxygen
CN112944803A (en) * 2021-02-02 2021-06-11 中国人民解放军海军航空大学青岛校区 Oxygen production equipment and oxygen production method
CN213514664U (en) * 2020-10-26 2021-06-22 深圳市怡禾技术有限公司 Air separation oxygen generator with multiple precooling functions
CN114570158A (en) * 2022-05-06 2022-06-03 山东神驰化工集团有限公司 Methanol hydrogen production carbon dioxide recovery device and recovery method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2435152A4 (en) * 2009-05-08 2012-12-26 Arruda Aniz Diderot De Versatile distillation cell

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB386205A (en) * 1931-05-20 1933-01-12 Mathias Frankl Process for the partial separation of gaseous mixtures
WO1993021488A1 (en) * 1992-04-13 1993-10-28 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Ultra-high purity nitrogen and oxygen generator
DE10139727A1 (en) * 2001-08-13 2003-02-27 Linde Ag Method and device for obtaining a printed product by low-temperature separation of air
CN101027527A (en) * 2004-08-03 2007-08-29 圣波尔股份有限公司 Energy efficient, inexpensive extraction of oxygen from ambient air for portable and home use
CN102252500A (en) * 2011-05-09 2011-11-23 浙江新锐空分设备有限公司 Method for utilizing oxygen-nitrogen liquefaction device to prepare high-purity oxygen
CN102442647A (en) * 2011-09-30 2012-05-09 浙江新锐空分设备有限公司 Method for preparing high-purity oxygen from liquid oxygen
CN213514664U (en) * 2020-10-26 2021-06-22 深圳市怡禾技术有限公司 Air separation oxygen generator with multiple precooling functions
CN112944803A (en) * 2021-02-02 2021-06-11 中国人民解放军海军航空大学青岛校区 Oxygen production equipment and oxygen production method
CN114570158A (en) * 2022-05-06 2022-06-03 山东神驰化工集团有限公司 Methanol hydrogen production carbon dioxide recovery device and recovery method thereof

Also Published As

Publication number Publication date
CN116817541A (en) 2023-09-29

Similar Documents

Publication Publication Date Title
CN206315491U (en) A kind of vacuum distillation system
CN109646732A (en) A kind of dedicated drainage care device of liver and gall surgical department
CN116817541B (en) Medical oxygen filling process blowdown gas recovery device
CN103785185A (en) Evaporation and concentration system and method
CN213912396U (en) Reduced pressure distillation device
CN109534370B (en) Battery grade lithium carbonate crude product stirring and washing device
CN208440279U (en) A kind of process units of super clean, high purified hydrofluoric acid
KR101242208B1 (en) Acid leaching system for silicon powder
CN207532829U (en) A kind of low temperature extraction device
CN206529481U (en) It is a kind of can enzyme digestion reaction vacuum scraper concentrator
CN111994951B (en) Method for recovering hafnium tetrachloride in crude zirconium tetrachloride purification process
CN112142002B (en) Controllable hydrogen manufacturing system of aluminium alkali reaction
CN210613275U (en) Device for recovering crude allicin in waste gas generated in black garlic processing
CN209655841U (en) A kind of condenser
CN220485375U (en) Organic waste liquid distillation recovery processing device
CN209778363U (en) Vacuum sublimation evaporation freezing sea water desalination equipment
CN208351794U (en) Molecular distillation production line instructional device
CN211885435U (en) Organic chemical distillation reflux device
CN116020250B (en) Hydrogen purification device in hydrolysis hydrogen production process
CN220939133U (en) MVR evaporation crystallization device
CN215026129U (en) Effectual chemical industry distillation extraction device of cooling
CN203307314U (en) Fragrance extractor
CN220309828U (en) Chemical product purifying equipment
CN212222418U (en) Hydrogen peroxide purification device
CN220736232U (en) Fraction treatment device after reduced pressure distillation

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant