DE202009010874U1 - Device for producing a gaseous print product by cryogenic separation of air - Google Patents

Device for producing a gaseous print product by cryogenic separation of air Download PDF

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Publication number
DE202009010874U1
DE202009010874U1 DE200920010874 DE202009010874U DE202009010874U1 DE 202009010874 U1 DE202009010874 U1 DE 202009010874U1 DE 200920010874 DE200920010874 DE 200920010874 DE 202009010874 U DE202009010874 U DE 202009010874U DE 202009010874 U1 DE202009010874 U1 DE 202009010874U1
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air
gaseous
pressure
turbines
producing
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DE200920010874
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Linde GmbH
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Linde GmbH
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Priority to DE200920010874 priority Critical patent/DE202009010874U1/en
Publication of DE202009010874U1 publication Critical patent/DE202009010874U1/en
Priority to CN2010800357860A priority patent/CN102741636A/en
Priority to EP10749468A priority patent/EP2464937A2/en
Priority to US13/389,862 priority patent/US20120174625A1/en
Priority to PCT/EP2010/004883 priority patent/WO2011018207A2/en
Priority to RU2012108588/06A priority patent/RU2012108588A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F25J3/04951—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network
    • F25J3/04963—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network and inter-connecting equipment within or downstream of the fractionation unit(s)
    • 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
    • F25J3/04048—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams
    • F25J3/04054—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams of 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
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04048—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams
    • F25J3/04066—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams of oxygen
    • 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
    • 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
    • F25J3/04163—Hot end purification of the feed air
    • F25J3/04169—Hot end purification of the feed air by adsorption of the impurities
    • F25J3/04175—Hot end purification of the feed air by adsorption of the impurities at a pressure of substantially more than the highest pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • 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
    • 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
    • F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • 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
    • F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
    • F25J3/04381—Details relating to the work expansion, e.g. process parameter etc. using work extraction by mechanical coupling of compression and expansion so-called companders
    • 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
    • F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
    • F25J3/04393—Details relating to the work expansion, e.g. process parameter etc. using multiple or multistage gas work expansion
    • 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
    • F25J3/04951—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network
    • F25J3/04957—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network and inter-connecting equipments upstream of the fractionation unit (s), i.e. at the "front-end"
    • 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/20—Integrated compressor and process expander; Gear box arrangement; Multiple compressors on a common shaft
    • 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/24—Multiple compressors or compressor stages in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/02—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream
    • F25J2240/04—Multiple expansion turbines in parallel

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

Abstract

Vorrichtung zur Erzeugung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft zur Erzeugung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft
– mit einem Luftverdichter zur Verdichtung von Einsatzluft,
– einem Hauptwärmetauscher zur Abkühlung der verdichteten Einsatzluft,
– einem Destilliersäulen-System zur Erzeugung mindestens eines flüssigen Produktstroms aus verdichteter Einsatzluft,
– einer Pumpe zur Erhöhung des Drucks des flüssigen Produktstroms,
– Mitteln zur Einführung des flüssigen Hochdruck-Produktstroms in den Hauptwärmetauscher,
– Mitteln zum Abziehen des Hochdruck-Produktstroms aus dem Hauptwärmetauscher als gasförmiges Druckprodukt und mit
– zwei seriell verbundenen Turbinen zur arbeitsleistenden Entspannung eines Teilstroms der Einsatzluft,
gekennzeichnet durch
– Mittel zur mechanischen Kopplung der beiden Turbinen.Apparatus for producing a gaseous print product by cryogenic separation of air to produce a gaseous print product by cryogenic separation of air
With an air compressor for the compression of feed air,
A main heat exchanger for cooling the compressed feed air,
A distillation column system for producing at least one liquid product stream of compressed feed air,
A pump for increasing the pressure of the liquid product stream,
Means for introducing the high pressure liquid product stream into the main heat exchanger,
- Means for removing the high-pressure product stream from the main heat exchanger as a gaseous pressure product and with
Two serially connected turbines for work-performing expansion of a partial flow of the feed air,
marked by
- Means for mechanical coupling of the two turbines.

Figure 00000001
Figure 00000001

Description

Die Erfindung betrifft eine Vorrichtung zur Erzeugung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft gemäß dem Oberbegriff des Schutzanspruchs 1.The The invention relates to a device for producing a gaseous printed product by cryogenic separation of air according to the preamble of the protection claim 1.

Die Methode der Erzeugung eines gasförmigen Druckprodukts durch Verdampfung (beziehungsweise – bei überkritischem Druck – Pseudo-Verdampfung) einer Hochdruckflüssigkeit wird auch ”Innenverdichtung” genannt. Bei der Luftzerlegung wird Sie häufig bei der Gewinnung von gasförmigem Drucksauerstoff eingesetzt. Alternativ oder zusätzlich kann aber auch gasförmiger Druckstickstoff oder eine andere Luftkomponente mittels Innenverdichtung gewonnen werden. Es ist bekannt, bei einem derartigen Verfahren zwei serielle Turbinen zur arbeitsleistenden Entspannung eines Teilstroms der Einsatzluft einzusetzen.The Method of generating a gaseous Printed product by evaporation (or - in supercritical Pressure - pseudo-evaporation) a high pressure liquid is also called "internal compaction". When air separation becomes common in the recovery of gaseous pressure oxygen used. Alternatively or additionally but also gaseous Pressurized nitrogen or another air component by internal compression be won. It is known in such a method two serial turbines for work-performing expansion of a partial flow to use the feed air.

Insbesondere bezieht sich die Erfindung auf Luftzerlegungssysteme zur Erzeugung von Drucksauerstoff und anderen Produkten mit Hilfe der Innenverdichtung mit einem einzelnen Hauptluftverdichter (ohne extern angetriebenen Booster-Verdichter oder völlig ohne Nachverdichtung von Teilluftströmen). Das Destilliersäulen-System weist in der Regel eine Hochdrucksäule und eine Niederdrucksäule auf, die über einen gemeinsamen Kondensator-Verdampfer, den Hauptkondensator, gekoppelt sind. Dieses System kann als klassische Doppelsäule ausgebildet sein, aber auch andere Zweisäulenanordnungen sowie Drei- und weitere Mehrsäulensysteme kommen in Frage.Especially The invention relates to air separation systems for production of pressure oxygen and other products with the help of internal compression with a single main air compressor (without externally driven Booster compressor or completely without recompression of partial air flows). The distillation column system As a rule, has a high-pressure column and a low-pressure column, which has a common condenser-evaporator, the main capacitor, coupled are. This system can be designed as a classic double column, but also other two-pillar arrangements as well as three and more multi-pillar systems come into question.

Die Luft wird dabei im Hauptluftverdichter auf ein höheres als konventionellen 6-bar-Niveau verdichtet, bis auf etwa Umgebungstemperatur abgekühlt und in einem Adsorber von Wasser, CO2 und weiteren Verunreinigungen befreit. Die Luft wird danach hauptsächlich in zwei Teilströme aufgeteilt. Ein Teilstrom (Turbinenstrom) wird im Hauptwärmetauscher abgekühlt in Turbinen auf etwa den Druck der Hochdrucksäule entspannt und zum Säulensystem geleitet. Der zweite Teilstrom (Drosselstrom) wird zuerst in einem oder mehreren in Serie geschalteten Boosterverdichter komprimiert, welche von den oben genannten Turbinen angetrieben werden. Danach wird dieser Teilluftstrom in dem Hauptwärmetauscher abgekühlt und in einem Drosselventil oder einer so genannten Flüssigturbine (oder auch einer Kombination aus beiden) auf etwa den Druck der Hochdrucksäule entspannt und ebenfalls zu Säulensystem geleitet. Im Säulensystem werden beide Teilströme in Sauerstoff, Stickstoff und gegebenenfalls weitere Produkte getrennt. Die Produkte zur Innenverdichtung werden aus dem Säulensystem flüssig entnommen, in einer oder mehreren Pumpen auf den höheren Druck gebracht und im Hauptwärmetauscher bis auf etwa Umgebungstemperatur angewärmt mit Hilfe der oben beschriebenen warmen Luftströme. Andere gasförmige Produkte und Restgase wie zum Beispiel Unreinstickstoff werden aus dem Säulensystem gasförmig entnommen und ebenfalls im Hauptwärmetauscher bis auf etwa Umgebungstemperatur angewärmt.The air is compressed in the main air compressor to a higher than conventional 6-bar level, cooled to about ambient temperature and freed in an adsorber of water, CO 2 and other impurities. The air is then divided mainly into two streams. A partial stream (turbine stream) is cooled down in the main heat exchanger in turbines to approximately the pressure of the high-pressure column and passed to the column system. The second partial flow (throttle flow) is first compressed in one or more series-connected booster compressors, which are driven by the above-mentioned turbines. Thereafter, this partial air flow is cooled in the main heat exchanger and expanded in a throttle valve or a so-called liquid turbine (or a combination of both) to about the pressure of the high pressure column and also passed to the column system. In the column system, both partial streams are separated into oxygen, nitrogen and optionally further products. The products for internal compression are removed from the column liquid, brought in one or more pumps to the higher pressure and warmed in the main heat exchanger to about ambient temperature by means of the above-described warm air streams. Other gaseous products and residual gases such as impure nitrogen are taken from the gas column system and also heated in the main heat exchanger to about ambient temperature.

Der ”Hauptwärmetauscher” kann aus einem oder mehreren parallel und/oder seriell verbundenen Wärmetauscherabschnitten gebildet sein, zum Beispiel aus einem oder mehreren Plattenwärmetauscher-Blöcken.The "main heat exchanger" can off one or more parallel and / or serially connected heat exchanger sections be formed, for example, from one or more plate heat exchanger blocks.

Für das beschriebene Verfahren ist es typisch, dass man zur Realisierung eine oder zwei Booster-Turbinen verwendet. Dabei ist die Schaltung so ausgeführt, dass die Turbinen nicht sich selbst boostern, sondern einen anderen Strom verdichten. In der Turbine wird also ein Strom entspannt, der davor nicht in der durch die Turbine angetriebenen Boosterstufe verdichtet wurde. Das führt zu einer komplizierten Verschaltung. Große Probleme bereitet in diesem Fall die Auslegung von entsprechenden Turbine-Booster-Einheiten, die mit einer Booster-Turbine nicht immer machbar ist. Auch die Verfügbarkeit der Gesamtanlage wird negativ beeinflusst, da ein Ausfall der Turbine unweigerlich dazu führt, dass die Anlage abgestellt werden soll.For the described It is typical of the process that one or two booster turbines are used to implement it used. The circuit is designed so that the turbines are not Boost yourself, but compress another stream. In The turbine is therefore a stream relaxed, the front not in the was compressed by the turbine driven booster stage. The leads to a complicated interconnection. Great problems in this Case the design of appropriate turbine booster units, which is not always feasible with a booster turbine. Also the Availability of Overall system is negatively affected, as a failure of the turbine inevitably leads that the system should be shut down.

Der Erfindung liegt die Aufgabe zugrunde, diese Nachteile mindestens teilweise zu vermeiden.Of the Invention is based on the object, these disadvantages at least partly to be avoided.

Diese Aufgabe wird durch das kennzeichnende Merkmal des Schutzanspruchs 1 gelöst. Die abhängigen Ansprüche enthalten besonders bevorzugte Ausgestaltungen der Erfindung.These Task is by the characterizing feature of the protection claim 1 solved. The dependent ones claims contain particularly preferred embodiments of the invention.

Anstelle einer oder zweier üblicher Booster-Turbinen werden zwei seriell verbundene Turbinen eingesetzt, die mechanisch miteinander gekoppelt sind, beispielsweise über eine gemeinsame Welle oder eine Getriebemaschine. Besonders vorteilhaft ist die Konstruktion mit beiden Turbinerädern in einem gemeinsamen Gehäuse, die einen gemeinsame Welle antreiben und so eine Einheit darstellen. Die gemeinsame Welle treibt eine Bremsvorrichtung an, die vorzugsweise durch einen Generator oder einen Verdichter, insbesondere einen Nachverdichter für einen Teilstrom der Luft gebildet wird.Instead of one or two usual ones Booster turbines use two serially connected turbines, which are mechanically coupled to each other, for example via a common shaft or a gear machine. Is particularly advantageous the construction with two turbine wheels in a common housing, the drive a common wave and thus represent a unity. The common shaft drives a braking device, preferably by a generator or a compressor, in particular a After-compressor for a partial flow of air is formed.

Bei der Verwendung eines Generators werden die Ströme wird das Verfahren vereinfacht. Wenn die Turbineneinheit ausfällt, kann die Anlage weiter mit externer Kälte betrieben werden, zum Beispiel der Zufuhr flüssigen Stickstoffs aus einem Tank (LIN-Injection). Damit ergibt sich eine hohe Verfügbarkeit.at By using a generator, the currents will simplify the process. If the turbine unit fails, the system can continue to be operated with external cooling, for example the Feed liquid Nitrogen from a tank (LIN injection). This results in a high availability.

Die Erfindung sowie weitere Einzelheiten der Erfindung werden im Folgenden anhand von in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert. Die Zeichnungen zeigen nur die wesentlichen Ausschnitte der Vorrichtung, insbesondereThe invention and further details of Invention will be explained in more detail below with reference to exemplary embodiments illustrated in the drawings. The drawings show only the essential details of the device, in particular

1 bis 5 Details des Hauptwärmetauschers und der Turbinen und 1 to 5 Details of the main heat exchanger and turbines and

6 und 7 spezielle Verschaltungen der Turbinen. 6 and 7 special interconnections of the turbines.

Einander entsprechende Bauteile beziehungsweise Verfahrensschritte tragen in allen Zeichnungen dieselben Bezugszeichen.each other wear corresponding components or process steps in all drawings the same reference numerals.

In 1 strömt Luft 1 vom Hauptluftverdichter und der nachfolgenden Luftreinigung (beides nicht dargestellt) unter sehr hohem Druck heran und wird in einen ersten Teilstrom 2 (Turbinenstrom) und einen zweiten Teilstrom 3 (Drosselstrom) aufgeteilt.In 1 air flows 1 from the main air compressor and the subsequent air cleaning (both not shown) under very high pressure and is in a first partial flow 2 (Turbine flow) and a second partial flow 3 (Choke current) split.

Der erste Teilstrom 2 wird in den Hauptwärmetauscher 10 am warmen Ende eingeleitet und bei einer Zwischentemperatur über Leitung 4 wieder entnommen und anschließend in einer ersten Turbine 5 arbeitsleistend auf einen Zwischendruck entspannt. Die Zwischendruckluft 6 wird im Hauptwärmetauscher 10 wieder angewärmt (Zwischenanwärmung) und über Leitung 7 einer zweiten Turbine 8 zugeführt und dort arbeitsleistend vom Zwischendruck auf etwa den Betriebsdruck der Hochdrucksäule des Destilliersäulen-Systems (nicht dargestellt) entspannt. Die Abluft 9 der zweiten Turbine 8 wird der Hochdrucksäule als im Wesentlichen gasförmige Einsatzluft zugeleitet.The first partial flow 2 gets into the main heat exchanger 10 introduced at the warm end and at an intermediate temperature via line 4 taken again and then in a first turbine 5 working to a relaxed intermediate pressure. The intermediate compressed air 6 is in the main heat exchanger 10 warmed up again (intermediate heating) and via pipe 7 a second turbine 8th fed and there work-performing from the intermediate pressure to about the operating pressure of the high-pressure column of the distillation column system (not shown) relaxed. The exhaust air 9 the second turbine 8th is fed to the high-pressure column as a substantially gaseous feed air.

Der zweite Teilstrom 3 wird unter dem sehr hohen Druck bis zum kalten Ende durch den Hauptwärmetauscher 10 geführt und liefert dabei die Wärme für einen unter Druck verdampfenden oder pseudo-verdampfenden Sauerstoffstrom, der als flüssiger Produktstrom aus dem Destilliersäulen-System entnommen wurde. (Dieser Strom ist hier nicht dargestellt; dies gilt auch für die übrigen Rückströme durch den Hauptwärmetauscher.) Der kalte zweite Teilstrom wird in einem Drosselventil 11 auf etwa Hochdrucksäulendruck entspannt und flüssig oder als Zweiphasengemisch in eine oder mehrere Säulen des Destilliersäulen-Systems eingeleitet.The second partial flow 3 gets under the very high pressure to the cold end through the main heat exchanger 10 while supplying the heat for a pressurized or pseudo-evaporating oxygen stream, which was taken as a liquid product stream from the distillation column system. (This flow is not shown here, as is the rest of the backflow through the main heat exchanger.) The cold second substream becomes a throttle valve 11 Relaxed to about high-pressure column pressure and liquid or introduced as a two-phase mixture in one or more columns of the distillation column system.

Die beiden Turbinen 5, 8 sind mechanisch gekoppelt, und zwar über eine gemeinsame Welle 12, die sie beide antreiben. Auf dieser Welle sitzt außerdem ein Generator 13, der die in den Turbinen erzeugte und auf die Welle 12 übertragene mechanische Energie in elektrische Energie umwandelt.The two turbines 5 . 8th are mechanically coupled, via a common shaft 12 They drive both of them. There is also a generator on this shaft 13 that generated in the turbines and on the shaft 12 transferred mechanical energy converts into electrical energy.

2 unterscheidet sich dadurch von 1, dass die Turbinen 5, 8 stattdessen mit einem Verdichter 213 gebremst werden, der als Nachverdichter für die gesamte Einsatzluft 1 ausgebildet ist. 2 is different from this 1 that the turbines 5 . 8th instead with a compressor 213 be braked, as a re-compressor for the entire feed air 1 is trained.

In 3 wird im Unterschied zu 2 die Gesamtluft 1 in dem Hauptwärmetauscher 310 etwas abgekühlt, bevor sie über Leitung 301 zum Nachverdichter 313 und über Leitung 302 wieder zum warmen Ende des Hauptwärmetauschers geleitet wird.In 3 is unlike 2 the total air 1 in the main heat exchanger 310 cooled down a bit before going over line 301 to the re-compressor 313 and via wire 302 is directed back to the warm end of the main heat exchanger.

Der Hauptwärmetauscher der 4 wird durch zwei serielle Blöcke 410a, 410b gebildet. Ähnlich wie in den 2 und 3 wird die Gesamtluft auf eine kryogene Temperatur abgekühlt und dann über Leitung 401 zu dem Nachverdichter 413 geführt, der als Kaltverdichter ausgebildet ist.The main heat exchanger of the 4 is through two serial blocks 410a . 410b educated. Similar in the 2 and 3 the total air is cooled to a cryogenic temperature and then over line 401 to the booster 413 guided, which is designed as a cold compressor.

In 5 wird der mit den Turbinen 5, 7 gekoppelte Kaltverdichter 513 nicht mit Luft beaufschlagt, sondern mit dem verdampften Produktstrom 53. Dazu wird der flüssige Produktstrom 51 (hier flüssiger Sauerstoff LOX aus der Niederdrucksäule des Destilliersäulen-Systems) nach der Druckerhöhung in einer Pumpe 52 wie üblich dem kalten Ende des Hauptwärmetauschers 10 zugeführt. Dort wird er aber nicht unmittelbar bis zum warmen Ende geleitet, sondern nach der Verdampfung beziehungsweise Pseudo-Verdampfung bei einer Zwischentemperatur wieder gasförmig entnommen (Leitung 53) und dem Kaltverdichter 513 zugeführt. Erst unter dann weiter erhöhtem Druck wird er über Leitung 54 dem Hauptwärmetauscher wieder an geeigneter Stelle zugeleitet. Über Leitung 55 wird schließlich das gasförmige Druckprodukt (PGOX) vom warmen Ende entnommen.In 5 will be the one with the turbines 5 . 7 coupled cold compressors 513 not pressurized with air, but with the vaporized product stream 53 , This is the liquid product stream 51 (here, liquid oxygen LOX from the low-pressure column of the distillation column system) after the pressure increase in a pump 52 as usual the cold end of the main heat exchanger 10 fed. There, however, it is not led directly to the warm end, but removed after evaporation or pseudo-evaporation at an intermediate temperature again in gaseous form (line 53 ) and the cold compressor 513 fed. Only then under further increased pressure is he over line 54 the main heat exchanger fed back to a suitable location. Via wire 55 Finally, the gaseous pressure product (PGOX) is removed from the warm end.

6 zeigt zwei mögliche Verschaltungen der Generatorturbine gemäß 1. In der linken Variante befindet sich der Generator im gleichen Gehäuse wie die Turbinen. Dies ist auch bei der mittleren Variante so; hier ist jedoch der Generator an gleicher Welle zwischen beiden Turbinen angeordnet. Beide Schaltungen sind der Ersatz für zwei separate Generatorturbinen (rechts). 6 shows two possible interconnections of the generator turbine according to 1 , In the left variant, the generator is in the same housing as the turbines. This is also the case with the middle variant; Here, however, the generator is arranged on the same shaft between the two turbines. Both circuits are the replacement for two separate generator turbines (right).

7 zeigt zwei mögliche Verschaltungen des mit den beiden Turbinen gekoppelten Verdichters gemäß den 2 bis 5. In der linken Variante befindet sich der Verdichter im gleichen Gehäuse wie die Turbinen. Dies ist auch bei der zweiten Variante von links so; hier ist jedoch der Generator an gleicher Welle zwischen beiden Turbinen angeordnet. Beide Schaltungen sind der Ersatz für zwei separate Turbinen-Booster-Kombinationen, wie sie in zwei Varianten rechts dargestellt sind. 7 shows two possible interconnections of the coupled with the two turbines compressor according to the 2 to 5 , In the left variant, the compressor is in the same housing as the turbines. This is also the case with the second variant from the left; Here, however, the generator is arranged on the same shaft between the two turbines. Both circuits are the replacement for two separate turbine-booster combinations, as shown in two variants on the right.

Claims (4)

Vorrichtung zur Erzeugung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft zur Erzeugung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft – mit einem Luftverdichter zur Verdichtung von Einsatzluft, – einem Hauptwärmetauscher zur Abkühlung der verdichteten Einsatzluft, – einem Destilliersäulen-System zur Erzeugung mindestens eines flüssigen Produktstroms aus verdichteter Einsatzluft, – einer Pumpe zur Erhöhung des Drucks des flüssigen Produktstroms, – Mitteln zur Einführung des flüssigen Hochdruck-Produktstroms in den Hauptwärmetauscher, – Mitteln zum Abziehen des Hochdruck-Produktstroms aus dem Hauptwärmetauscher als gasförmiges Druckprodukt und mit – zwei seriell verbundenen Turbinen zur arbeitsleistenden Entspannung eines Teilstroms der Einsatzluft, gekennzeichnet durch – Mittel zur mechanischen Kopplung der beiden Turbinen.Apparatus for producing a gaseous print product by cryogenic separation of air to produce a gaseous print pro low-temperature decomposition of air - with an air compressor for compressing feed air, - a main heat exchanger for cooling the compressed feed air, - a distillation column system for producing at least one liquid product stream of compressed feed air, - a pump for increasing the pressure of the liquid product stream, - Means for introducing the liquid high-pressure product stream into the main heat exchanger, - means for removing the high-pressure product stream from the main heat exchanger as gaseous pressure product and with - two serially connected turbines for work-performing expansion of a partial flow of the feed air, characterized by - means for mechanical coupling of the two turbines. Vorrichtung zur Erzeugung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft nach Anspruch 1 mit einem Generator, der mechanisch mit den beiden Turbinen gekoppelt ist.Device for producing a gaseous printed product by cryogenic separation of air according to claim 1 with a Generator mechanically coupled to the two turbines. Vorrichtung zur Erzeugung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft nach Anspruch 1 oder 2, mit einem Verdichter, der mechanisch mit den beiden Turbinen gekoppelt ist.Device for producing a gaseous printed product by cryogenic separation of air according to claim 1 or 2, with a compressor that is mechanically coupled to the two turbines. Vorrichtung zur Erzeugung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft nach Anspruch 3, dadurch gekennzeichnet, dass der Verdichter als Nachverdichter für einen Teilstrom der Luft ausgebildet ist.Device for producing a gaseous printed product by cryogenic separation of air according to claim 3, characterized in that the compressor is used as a booster for a Partial flow of the air is formed.
DE200920010874 2009-08-11 2009-08-11 Device for producing a gaseous print product by cryogenic separation of air Expired - Lifetime DE202009010874U1 (en)

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DE200920010874 DE202009010874U1 (en) 2009-08-11 2009-08-11 Device for producing a gaseous print product by cryogenic separation of air
CN2010800357860A CN102741636A (en) 2009-08-11 2010-08-10 Method and device for producing a gaseous pressurized oxygen product by cryogenic separation of air
EP10749468A EP2464937A2 (en) 2009-08-11 2010-08-10 Method and device for producing a gaseous pressurized oxygen product by cryogenic separation of air
US13/389,862 US20120174625A1 (en) 2009-08-11 2010-08-10 Method and device for producing a gaseous pressurized oxygen product by cryogenic separation of air
PCT/EP2010/004883 WO2011018207A2 (en) 2009-08-11 2010-08-10 Method and device for producing a gaseous pressurized oxygen product by cryogenic separation of air
RU2012108588/06A RU2012108588A (en) 2009-08-11 2010-08-10 METHOD AND DEVICE FOR PRODUCING GAS-COMPRESSED OXYGEN PRODUCT BY LOW-TEMPERATURE AIR SEPARATION

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012017488A1 (en) 2012-09-04 2014-03-06 Linde Aktiengesellschaft Method for building air separation plant, involves selecting air separation modules on basis of product specification of module set with different air pressure requirements
DE102013012606A1 (en) 2013-02-19 2014-08-21 CRYOTEC Anlagenbau GmbH Modular process plant, in particular air separation plant with a variety of plant components
FR3012211A1 (en) * 2013-10-18 2015-04-24 Air Liquide PROCESS FOR DEAZATING NATURAL GAS WITH OR WITHOUT RECOVERING HELIUM

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012017488A1 (en) 2012-09-04 2014-03-06 Linde Aktiengesellschaft Method for building air separation plant, involves selecting air separation modules on basis of product specification of module set with different air pressure requirements
DE102013012606A1 (en) 2013-02-19 2014-08-21 CRYOTEC Anlagenbau GmbH Modular process plant, in particular air separation plant with a variety of plant components
WO2014128120A2 (en) 2013-02-19 2014-08-28 CRYOTEC Anlagenbau GmbH Modular processing system, in particular air separating system with a plurality of system components
DE102013012606B4 (en) * 2013-02-19 2015-08-06 CRYOTEC Anlagenbau GmbH Modular process plant, in particular air separation plant with a variety of plant components
FR3012211A1 (en) * 2013-10-18 2015-04-24 Air Liquide PROCESS FOR DEAZATING NATURAL GAS WITH OR WITHOUT RECOVERING HELIUM
WO2015055938A3 (en) * 2013-10-18 2015-12-03 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for denitrogenation of natural gas with or without helium recovery
US10006699B2 (en) 2013-10-18 2018-06-26 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for denitrogenation of natural gas with or without helium recovery
EA034668B1 (en) * 2013-10-18 2020-03-04 Л'Эр Ликид, Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод Method for denitrogenation of natural gas with or without helium recovery

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