EP1319913A1 - Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck - Google Patents
Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck Download PDFInfo
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- EP1319913A1 EP1319913A1 EP02027308A EP02027308A EP1319913A1 EP 1319913 A1 EP1319913 A1 EP 1319913A1 EP 02027308 A EP02027308 A EP 02027308A EP 02027308 A EP02027308 A EP 02027308A EP 1319913 A1 EP1319913 A1 EP 1319913A1
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- Prior art keywords
- pressure column
- high pressure
- line
- secondary condenser
- low
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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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
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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
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
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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
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/04103—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression using solely hydrostatic liquid head
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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
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
- F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
- F25J3/04206—Division of the main heat exchange line in consecutive sections having different functions including a so-called "auxiliary vaporiser" for vaporising and producing a gaseous product
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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
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
- F25J3/04236—Integration of different exchangers in a single core, so-called integrated cores
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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
- F25J3/04248—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
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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
- F25J3/04406—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
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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
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04854—Safety aspects of operation
- F25J3/0486—Safety aspects of operation of vaporisers for oxygen enriched liquids, e.g. purging of liquids
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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
- F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
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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
- F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
- F25J3/04884—Arrangement of reboiler-condensers
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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
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
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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
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
- F25J2205/04—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation step
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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
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/42—Nitrogen
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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
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/50—Oxygen
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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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream being air
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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
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
- F25J2250/40—One fluid being air
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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
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
- F25J2250/50—One fluid being oxygen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S62/00—Refrigeration
- Y10S62/902—Apparatus
- Y10S62/905—Column
Definitions
- the invention relates to a device for generating gaseous oxygen under increased pressure with a distillation column system that includes a high pressure column and a Has low pressure column, the low pressure column above the high pressure column is arranged, with a secondary condenser, which has a liquefaction space and Has evaporation space and below the bottom of the low pressure column is arranged, with a feed air line which is connected to the high pressure column, with at least one transition line for the introduction of a fraction from the High pressure column in the low pressure column, with a liquid line for removal a liquid oxygen fraction from the low pressure column, the Liquid line leads into the evaporation chamber of the secondary condenser, and with a product line for gaseous oxygen under increased pressure, which with the Evaporation chamber of the condenser-evaporator is connected.
- the distillation column system for example a Linde double column system, is used for the low-temperature decomposition of the feed air into oxygen and nitrogen.
- the Basics of the low-temperature decomposition of air in general as well as the structure of double column systems in particular are in the monograph "Low temperature technology” by Hausen / Linde (2nd edition, 1985) and in an article by Latimer in Chemical Engineering Progress (Vol. 63, No.2, 1967, page 35).
- High-pressure column and low-pressure column are usually above one Main condenser in heat exchange relationship, in the top gas of the High pressure column against evaporating sump liquid of the low pressure column is liquefied.
- a device of the type mentioned at the outset is known from DE 2323941 A, EP 384483 B1 and EP 1074805 A1.
- the secondary condenser is used for evaporation. He is usually arranged next to the high pressure column.
- Distillation column system and secondary condenser usually also a main heat exchanger for cooling the feed air and, if necessary, a subcooling counterflow must be insulated against the entry of heat.
- This is generally used one or more envelopes filled with powder (perlite), so-called cold boxes.
- a “condenser” is used here as a “side condenser” referred to, which is arranged outside the low pressure column and its Evaporation side during operation of the plant under a higher pressure than the low pressure column stands. Evaporated oxygen there is then under one correspondingly increased pressure obtained as a gaseous product. The pressure increase is caused by the geodetic gradient (and possibly also by a Pump).
- the secondary condenser is preferably a liquid bath evaporator (Circulation evaporator): One plate heat exchanger block contains Evaporation and liquefaction passages. It is placed in a container that is partially filled with liquid to be evaporated during operation.
- the Liquid is released through the evaporation passages by means of the thermosiphon effect of the plate heat exchanger block overturned.
- the evaporation space is through these evaporation passages and through the outside space between block and Container wall formed, the liquefaction room through the liquefaction passages.
- the invention has for its object a device of the aforementioned Art to make particularly inexpensive and especially particularly compact.
- this object is achieved in that the secondary capacitor is arranged below the high pressure column.
- “Among each other” here means that the cross sections of the two parts of the apparatus in the projection onto a horizontal plane overlap, “horizontally” referring to the orientation of these parts in operational condition.
- the cross sections of secondary condenser and In this sense, high-pressure columns partially or overlap, for example Completely.
- Auxiliary condenser, high pressure column and Low pressure column arranged in a line one below the other.
- a common cold box, which encloses all three parts of the apparatus can be particularly compact and therefore be carried out inexpensively. Another advantage is the larger one vertical distance between low pressure column and secondary condenser.
- the gaseous oxygen product can therefore be under a particularly high pressure can be obtained, for example 1.5 to 3.5 bar, preferably 2 to 2.8 bar.
- the low-pressure column, high-pressure column and secondary condenser are preferably all in one Line arranged one below the other.
- the feed air line through the liquefaction room of the Secondary condenser performed.
- the feed air thus serves as a heating medium for the Evaporation of the liquid oxygen fraction and partially condenses or Completely.
- the feed air line and the secondary condenser are so are formed so that the feed air in the Auxiliary condenser is only partially condensed, for example 30 mol% or less, preferably 25 to 30 mol%.
- the entire Feed air (possibly less a turbine air quantity) through the secondary condenser out, and additional emergency air lines are unnecessary.
- the pressure in the liquefaction chamber of the secondary condenser is preferably 6 to 8 bar.
- the partially condensed feed air from the Auxiliary capacitor can be introduced into a separator (phase separator) for example, right next to the secondary condenser inside the cold box is arranged.
- Each air separation plant has a main heat exchanger for cooling Operating air against product flows. It is with the device according to the invention favorable if this main heat exchanger is arranged below the high pressure column is, especially between the high pressure column and secondary condenser. This can also the main heat exchanger from the common, compact cold box be enclosed. Separate insulation and a voluminous design of the Boxes can be avoided. The additional height of the main heat exchanger brings with it an additional pressure increase in the oxygen product.
- the feed liquid (s) for the low pressure column against the or Low pressure column gas products through indirect heat exchange in one Supercooling countercurrent supercooled.
- this additional heat exchanger also between the high pressure column and the Auxiliary capacitor is arranged. He can also use the common compact cold box. Separate insulation and one voluminous design of the box can be avoided. The additional amount of The main heat exchanger brings an additional pressure increase in the oxygen product yourself.
- the parts of the apparatus are preferably each direct in the following order arranged one above the other: secondary condenser (possibly with separator) - subcooling counterflow - Main heat exchanger - high pressure column - low pressure column.
- the invention also relates to a method for producing gaseous oxygen under increased pressure according to claims 7 to 12
- FIG. 1 the spatial structure of a device according to the invention is shown schematically. Details such as pipes, valves, measuring and actuating devices are not shown.
- a cuboid or cylindrical cold box 101 Within a cuboid or cylindrical cold box 101 are one above the other all parts of the apparatus housed that require thermal insulation. As At the bottom are a secondary capacitor 102 and the associated separator 103 the floor. Above this are the supercooling counterflow 104, the Main heat exchanger 105, the high pressure column 106 and the low pressure column 107 arranged. The space 108 between the apparatus and the cold box wall is filled with insulating powder (perlite).
- Subcooling counterflow 104 and main heat exchanger 105 can also be used as common, integrated heat exchanger block can be formed (not in Figure 1 ) Shown.
- compressed and cleaned air 1 is brought in under a pressure of, for example, 8.2 bar and enters a main heat exchanger 105 at the warm end.
- the main part of the air is removed via line 2 at the cold end of the main heat exchanger 105 and fed to the liquefaction space of a secondary condenser 102.
- the air condenses there partially.
- a two-phase mixture emerges from the secondary condenser 102 via line 3 and contains approximately 26 mol% of liquid. It is introduced into a separator 103.
- the gaseous air fraction 4 is throttled to about 6 bar (FIG. 5) and fed into the high pressure column 106 of a distillation column system which also has a low pressure column 107. (Lines 1, 2, 3 and 4 represent the "feed air line" in the exemplary embodiment.) After passing through another throttle valve 7, the liquid 6 is introduced into the low-pressure column 107 under approximately 1.5 bar.
- Gaseous top nitrogen 8 of the high pressure column 106 becomes at least part 9 in a main condenser against evaporating sump liquid Low pressure column 107 condensed.
- the liquid nitrogen 11 thus formed becomes a first part 12 is returned to the high-pressure column 106 as a return.
- On second part 14 is subcooled in a supercooling counterflow 104 and over Line 15 and valve 16 abandoned on the top of the low pressure column 107.
- the Supercooling counterflow 104 and the main heat exchanger 105 are in the Embodiment designed as an integrated heat exchanger block.
- the Liquid nitrogen 15 serves mainly as a return in the low pressure column 107; he can also be taken to a part 17 as an unpressurized liquid product (LIN) become.
- Another part 13 of the liquid nitrogen 11 from the main condenser 10 can be deducted as a liquid pressure product (PLIN).
- the gaseous products of the low pressure column 107 become cleaner and more impure Nitrogen via the product line 21/22 or via the residual gas line 23/24/25 through the supercooling counterflow 104 and the main heat exchanger 105 led and finally deducted as a product (GAN) or in the Blow off atmosphere or as a regeneration gas in a molecular sieve system used to purify the air (not shown). Also directly from the A high pressure column can be used to obtain a product. For this purpose, part 26 of the Head nitrogen 8 warmed in the main heat exchanger 105 and as a gaseous Compressed nitrogen product 27 (PGAN) won.
- a liquid oxygen fraction 28 becomes from the bottom of the low-pressure column 107 subtracted, experiences a hydrostatic pressure increase and is in the Evaporation space of the secondary condenser 102 is introduced and there is partial evaporated.
- the gaseous oxygen 29 thus formed becomes Main heat exchanger performed and finally via line 30 as a compressed gas product (GOX) led to a consumer.
- the remaining liquid oxygen is called Flushing liquid 31 from the evaporation space of the secondary condenser 102 withdrawn and either discarded or (as shown in Figure 2) as a liquid product (LOX) won; alternatively or additionally, injection into line 30 is possible.
- the one required for the equalization of the insulation losses and for the product liquefaction Cold is in the embodiment of Figure 2 by work Relaxation of a process stream generated.
- Liquid production can be mixed with a portion 36 of turbine air 34 and the residual gas 23 be removed from the process together with this.
- Figure 3 differs from Figure 2 in the different form of cold supply. There is no turbine here.
- the cooling requirement is instead covered by liquid supply from outside (liquid assist).
- liquid oxygen 337 is introduced from a liquid tank into the lower area of the low pressure column 107.
- the supply of cryogenic liquid from a nitrogen liquid tank.
- the liquid nitrogen can be introduced via line 338 into the upper region of the low-pressure column 107 and / or via line 339 into the upper region of the high-pressure column 106.
- Liquefied air or any other liquid mixture of air components can also be used to cover the cooling requirement.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
- Figur 1
- eine beispielhafte räumliche Anordnung der verschiedenen Apparateteile,
- Figuren 2 und 3
- zwei Ausführungsformen der Erfindung mit Details zur Abfolge der Verfahrensschritte, mit Kälteerzeugung durch Turbine (Figur 2) beziehungsweise mit Kältezufuhr von außen (Figur 3).
Claims (12)
- Vorrichtung zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druckmit einem Destilliersäulen-System, das eine Hochdrucksäule (106) und eine Niederdrucksäule (107) aufweist, wobei die Niederdrucksäule (107) oberhalb der Hochdrucksäule (106) angeordnet ist,mit einem Nebenkondensator (102), der einen Verflüssigungsraum und einen Verdampfungsraum aufweist und unterhalb des Sumpfs der Niederdrucksäule (107) angeordnet ist,mit einer Einsatzluft-Leitung (1, 2, 3, 4), die mit der Hochdrucksäule (106) verbunden ist,mit mindestens einer Übergangsleitung (18-19; 11-14-15) zur Einleitung einer Fraktion aus der Hochdrucksäule (106) in die Niederdrucksäule (107),mit einer Flüssigkeitsleitung (28) zum Entnehmen einer flüssigen Sauerstofffraktion aus der Niederdrucksäule (107), wobei die Flüssigkeitsleitung (28) in den Verdampfungsraum des Nebenkondensators (102) führt, undmit einer Produktleitung (29, 30) für gasförmigen Sauerstoff unter erhöhtem Druck, die mit dem Verdampfungsraum des Kondensator-Verdampfers (102) verbunden ist,
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass Niederdrucksäule (107), Hochdrucksäule (106) und Nebenkondensator (102) in einer Linie untereinander angeordnet sind.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Einsatzluft-Leitung (1, 2, 3, 4) durch den Verflüssigungsraum des Nebenkondensators (102) führt.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Einsatzluft-Leitung (1, 2, 3, 4) und der Nebenkondensator (102) so ausgebildet sind, dass während des Betriebs der Vorrichtung die Einsatzluft in dem Nebenkondensator (102) nur partiell kondensiert wird.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Einsatzluft-Leitung (1, 2, 3, 4) durch einen Hauptwärmetauscher (105) zur Abkühlung der Einsatzluft gegen Produktströme führt und der Hauptwärmetauscher (105) unterhalb der Hochdrucksäule (106) angeordnet ist, insbesondere zwischen Hochdrucksäule (106) und Nebenkondensator (102).
- Vorrichtung nach einem der Ansprüche 1 bis 5, gekennzeichnet durch eine Gasprodukt-Leitung (21-22, 23-24-25) zum Abführen eines gasförmigen Produkts aus der Niederdrucksäule (107), wobei die Gasprodukt-Leitung (21-22, 23-24-25) mit einem Unterkühlungs-Gegenströmer (104) verbunden ist, durch den außerdem die Übergangsleitung (18-19; 11-14-15) führt, und wobei der Unterkühlungs-Gegenströmer (104) zwischen der Hochdrucksäule (106) und dem Nebenkondensator (102) angeordnet ist.
- Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck in einem Destilliersäulen-System, das eine Hochdrucksäule (106) und eine Niederdrucksäule (107) aufweist, wobei die Niederdrucksäule (107) oberhalb der Hochdrucksäule (106) angeordnet ist, wobei bei dem Verfahrenein Einsatzluftstrom (1, 2, 3, 4) in die Hochdrucksäule (106) eingeleitet wird,mindestens eine Fraktion (18-19; 11-14-15) aus der Hochdrucksäule (106) in die Niederdrucksäule (107) geführt wird,eine flüssige Sauerstofffraktion der Niederdrucksäule (107) in den Verdampfungsraum des Nebenkondensators (102) eingeführt wird, der einen Verflüssigungsraum und einen Verdampfungsraum aufweist und unterhalb des Sumpfs der Niederdrucksäule (107) angeordnet ist, undgasförmiger Sauerstoff (29, 30) aus dem Verdampfungsraum des Kondensator-Verdampfers (102) abgezogen wird,
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass Niederdrucksäule (107), Hochdrucksäule (106) und Nebenkondensator (102) in einer Linie untereinander angeordnet sind.
- Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass mindestens ein Teil der Einsatzluft (1, 2, 4) durch den Verflüssigungsraum des Nebenkondensators (102) geführt wird.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass die Einsatzluft in dem Nebenkondensator (102) nur partiell kondensiert wird.
- Verfahren nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass die Einsatzluft (1) in einem Hauptwärmetauscher (105) gegen Produktströme (21, 23, 26) abgekühlt wird und der Hauptwärmetauscher (105) unterhalb der Hochdrucksäule (106) angeordnet ist, insbesondere zwischen Hochdrucksäule (106) und Nebenkondensator (102).
- Verfahren nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, dass mindestens ein gasförmiger Produktstrom (21, 23) aus der Niederdrucksäule (107) abgezogen und in einem Unterkühlungs-Gegenströmer (104) gegen die Fraktion (18-19; 11-14-15) aus der Hochdrucksäule (106) angewärmt wird, wobei der Unterkühlungs-Gegenströmer (104) zwischen der Hochdrucksäule (106) und dem Nebenkondensator (102) angeordnet ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02027308A EP1319913A1 (de) | 2001-12-14 | 2002-12-06 | Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10161584 | 2001-12-14 | ||
DE10161584A DE10161584A1 (de) | 2001-12-14 | 2001-12-14 | Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck |
EP02002634A EP1319912A1 (de) | 2001-12-14 | 2002-02-05 | Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck |
EP02002634 | 2002-02-05 | ||
EP02027308A EP1319913A1 (de) | 2001-12-14 | 2002-12-06 | Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck |
Publications (1)
Publication Number | Publication Date |
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EP1319913A1 true EP1319913A1 (de) | 2003-06-18 |
Family
ID=7709273
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02002634A Withdrawn EP1319912A1 (de) | 2001-12-14 | 2002-02-05 | Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck |
EP02027308A Withdrawn EP1319913A1 (de) | 2001-12-14 | 2002-12-06 | Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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EP02002634A Withdrawn EP1319912A1 (de) | 2001-12-14 | 2002-02-05 | Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck |
Country Status (3)
Country | Link |
---|---|
US (1) | US6662594B2 (de) |
EP (2) | EP1319912A1 (de) |
DE (1) | DE10161584A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014102014A2 (de) | 2012-12-27 | 2014-07-03 | Linde Aktiengesellschaft | Verfahren und vorrichtung zur tieftemperatur-luftzerlegung |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1582830A1 (de) * | 2004-03-29 | 2005-10-05 | Air Products And Chemicals, Inc. | Verfahren und Apparatus zur Tieftemperaturluftzerlegung |
FR2902858A1 (fr) * | 2006-06-27 | 2007-12-28 | Air Liquide | Installation comprenant au moins un equipement a isoler thermiquement |
DE102007024168A1 (de) * | 2007-05-24 | 2008-11-27 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperatur-Luftzerlegung |
FR2938320B1 (fr) * | 2008-11-10 | 2013-03-15 | Air Liquide | Installation integree de separation d'air et de chauffage d'eau destinee a une chaudiere |
EP2236964B1 (de) * | 2009-03-24 | 2019-11-20 | Linde AG | Verfahren und Vorrichtung zur Tieftemperatur-Luftzerlegung |
EP2553370B1 (de) * | 2010-03-26 | 2019-05-15 | Linde Aktiengesellschaft | Vorrichtung zur tieftemperaturzerlegung von luft |
DE102010012920A1 (de) | 2010-03-26 | 2011-09-29 | Linde Aktiengesellschaft | Vorrichtung zur Tieftemperaturzerlegung von Luft |
US20130042647A1 (en) * | 2011-08-18 | 2013-02-21 | Air Liquide Process & Construction, Inc. | Production Of High-Pressure Gaseous Nitrogen |
FR2979422A1 (fr) * | 2011-08-23 | 2013-03-01 | Air Liquide | Appareil et procede de production d'un debit riche en dioxyde de carbone par distillation |
FR2991442B1 (fr) * | 2012-05-31 | 2018-12-07 | L'air Liquide,Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Appareil et procede de separation cryogenique d'un melange de monoxyde de carbone et de methane ainsi que d'hydrogene et/ou d'azote |
EP3732414A4 (de) * | 2017-12-25 | 2021-07-21 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Einzelverpacktes lufttrenngerät mit umgekehrtem hauptwärmetauscher |
FR3119884B1 (fr) * | 2021-02-18 | 2022-12-30 | Air Liquide | Procédé de séparation d’air par distillation cryogénique |
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- 2001-12-14 DE DE10161584A patent/DE10161584A1/de not_active Withdrawn
-
2002
- 2002-02-05 EP EP02002634A patent/EP1319912A1/de not_active Withdrawn
- 2002-12-06 EP EP02027308A patent/EP1319913A1/de not_active Withdrawn
- 2002-12-16 US US10/319,582 patent/US6662594B2/en not_active Expired - Fee Related
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US4133662A (en) * | 1975-12-19 | 1979-01-09 | Linde Aktiengesellschaft | Production of high pressure oxygen |
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WO2014102014A2 (de) | 2012-12-27 | 2014-07-03 | Linde Aktiengesellschaft | Verfahren und vorrichtung zur tieftemperatur-luftzerlegung |
WO2014102014A3 (de) * | 2012-12-27 | 2015-05-28 | Linde Aktiengesellschaft | Verfahren und vorrichtung zur tieftemperatur-luftzerlegung |
Also Published As
Publication number | Publication date |
---|---|
DE10161584A1 (de) | 2003-06-26 |
EP1319912A1 (de) | 2003-06-18 |
US6662594B2 (en) | 2003-12-16 |
US20030110796A1 (en) | 2003-06-19 |
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