ES2292231T3 - Instalacion combinada de un horno y de un aparato de destilacion de aire y procedimiento de puesta en practica. - Google Patents

Instalacion combinada de un horno y de un aparato de destilacion de aire y procedimiento de puesta en practica. Download PDF

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ES2292231T3
ES2292231T3 ES99900984T ES99900984T ES2292231T3 ES 2292231 T3 ES2292231 T3 ES 2292231T3 ES 99900984 T ES99900984 T ES 99900984T ES 99900984 T ES99900984 T ES 99900984T ES 2292231 T3 ES2292231 T3 ES 2292231T3
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air
blower
super
turbine
compressor
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Alain Guillard
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Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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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
    • 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
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04139—Combination of different types of drivers mechanically coupled to the same compressor, possibly split on multiple compressor casings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • 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
    • F25J3/04024—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 purified feed air, so-called boosted 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
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04115—Arrangements of compressors and /or their drivers characterised by the type of prime driver, e.g. hot gas expander
    • F25J3/04133—Electrical motor as the prime mechanical driver
    • 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
    • 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
    • F25J3/0446—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 the heat generated by mixing two different phases
    • F25J3/04466—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 the heat generated by mixing two different phases for producing oxygen as a mixing column overhead gas by mixing gaseous air feed and liquid 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
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
    • F25J3/04551—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production
    • F25J3/04557—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production for pig iron or steel making, e.g. blast furnace, Corex
    • 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
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04593—The air gas consuming unit is also fed by an air stream
    • F25J3/046—Completely integrated air feed compression, i.e. common MAC
    • 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
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04612—Heat exchange integration with process streams, e.g. from the air gas consuming unit
    • F25J3/04618—Heat exchange integration with process streams, e.g. from the air gas consuming unit for cooling an air stream fed to the air fractionation unit
    • 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
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
    • 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
    • Y10S62/915—Combustion

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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Processing Of Solid Wastes (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
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Abstract

Instalación combinada que comprende al menos un horno (FM) alimentado con aire comprimido por al menos un soplador (S), y al menos un aparato de destilación de aire alimentado al menos en parte por el soplador (S) y que suministra el oxígeno (O) al horno, el aparato comprendiendo al menos una columna de presión media (MP) que recibe el aire a la presión (P1) del soplador y al menos una turbina criogénica (T) que expande una parte de este aire proveniente del soplador, y una columna de mezclado (CM) que suministra dicho oxígeno y que recibe el aire proveniente del soplador super-comprimido por un super-compresor (C) acoplado a la turbina (T), caracterizado porque el conjunto super-compresor/turbina criogénica (C-T) está acoplado a al menos un motor de asistencia auxiliar (EM).

Description

Instalación combinada de un horno y de un aparato de destilación de aire y procedimiento de puesta en práctica.
La presente invención concierne a las instalaciones combinadas con al menos un horno, típicamente un horno de tratamiento de metal, alimentado con aire comprimido por al menos un soplador, y por al menos un aparato de destilación de aire, alimentado al menos en parte por dicho soplador y que proporciona el oxígeno al horno, el aparato comprendiendo al menos una columna de presión media que recibe el aire a la presión del soplador y al menos una turbina criogénica que expande una parte de ese aire proveniente del soplador, y una columna de mezclado que suministra dicho oxígeno y que recibe el aire proveniente del soplador super-comprimido por un super-compresor acoplado a la turbina.
Una instalación de este tipo es descrita en el documento US-A-5-244 489 (Grenier), al cual se podrá referir para más detalles. En este documento el super-compresor de aire suministrado a la columna de mezclado es impulsado por una turbina de mantenimiento en frío que expande la parte del flujo de aire dirigido a la columna de presión media, en una disposición considerable para efectuar la super-compresión necesaria, agitar una parte importante del aire de alimentación de la columna de presión media provocando pérdidas del rendimiento de extracción y de energía así como sobre dimensionamientos de los puestos de refrigeración y de depuración del aire de alimentación del aparato de destilación.
La presente invención tiene como objeto proponer una instalación combinada del tipo mencionado más arriba, que permite costos de explotación reducidos y con una mayor flexibilidad en la selección de los intervalos de funcionamiento.
Para hacer esto, según una característica de la invención, el conjunto super-compresor/turbina criogénica es acoplado a al amenos un motor de asistencia auxiliar, típicamente eléctrico.
La presente invención tiene igualmente como objeto proponer un procedimiento de realización de este tipo de instalación combinada según la reivindicación 3.
Según una característica más particular de la invención, la asistencia es aportada por un motor eléctrico acoplado al árbol del conjunto super-compresor/turbina.
La asistencia a los conjuntos compresor/turbina es conocida desde hace algunos años, en particular para asistir los turbo-compresores de motores de combustión interna (cf US-A-4 485 310, de Valroger o más recientemente, US-A-5 560 208, Halimi y otros, con asistencia eléctrica, o US-A-4 622 817, Kobayashi, con asistencia hidráulica). El estado de la técnica no enseña para nada las aplicaciones de alimentación de aparatos de destilación según la presente invención.
Otras características y ventajas de la presente invención resultarán de la descripción siguiente de un modo de realización, dado a título ilustrativo pero no limitativo, hecho con relación al dibujo anexo en el cual:
la figura 1 es una vista esquemática de una instalación combinada según la invención.
En la figura 1, se ha representado esquemáticamente un horno de tratamiento de metal, en este caso un alto horno (FM), y un aparato de destilación de aire asociado que comprende esencialmente, en el ejemplo representado, una línea de intercambio principal LE, una doble columna con una columna de presión media MP y una columna de baja presión BP, y una columna de mezclado CM.
De la parte superior de la columna de mezclado CM por una línea O el oxígeno de mediana pureza que, según la invención, después de atravesar la línea de intercambio LE, desemboca en la línea de aire comprimido principal por encima del horno FM para enriquecer con oxígeno el aire suministrado a este último. Clásicamente, de la parte superior de la columna de baja presión BP parte una línea de nitrógeno impuro N_{i}. En una variante, en el ejemplo representado, la columna de baja presión BP es rebasada con un minarete M que utiliza como reflujo el nitrógeno líquido proveniente de la columna MP y produce en su parte de arriba el nitrógeno puro evacuado por una línea N_{p} para una utilización en el lugar o en las cercanías de éste último.
El horno FM y el aparato de destilación son alimentados con aire por un mismo soplador S que suministra en una línea de aire comprimido principal A que alimenta al menos el horno FM con un fuerte volumen de aire (superior típicamente a 100 000 Nm^{3}/h) bajo una presión media P_{1} inferior a 6 x 10^{5} Pa, típicamente entre 3 x 10^{5} Pa y 5,5 x 10^{5} Pa. La línea A puede igualmente alimentar, de manara simultánea o alterna, otro horno de tratamiento de metal, por ejemplo un horno eléctrico con el procedimiento AOD. De la línea principal A parte un circuito de derivación de aire D que alimenta el aparato de destilación con aire enfriado y luego depurado en un aparato de depuración E, típicamente del tipo por adsorción. Por debajo de este aparato de depuración E, el circuito D se divide en una primera línea J de alimentación de la doble columna y una segunda línea L de alimentación de aire de la columna de mezcla CM.
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Según un aspecto de la invención, una parte del flujo de aire en la línea J es derivada en la línea de intercambio LE y agitado en una turbina criogénica T para ser introducido en la columna de baja presión BP a baja presión de esta última. La turbina T está acoplada a un super-compresor C dispuesto en la línea L para super-comprimir el aire proveniente del soplador y dirigirlo a la columna de mezclado CM a una presión P_{2} superior a la presión P_{1} de al menos 0,3 x 10^{5} Pa e inferior a 1,5 x 10^{5} Pa, típicamente comprendida entre 0,4 x 10^{5} Pa y 0,8 x 10^{5} Pa. Según un aspecto de la invención, el conjunto super-compresor/turbina C-T es asistido por al menos un motor EM acoplado a la línea del árbol del conjunto C-T. El motor EM es de un tipo eléctrico o hidráulico, tales como los descritos en los documentos antes mencionados. En la práctica, la energía pico es del orden de 30 a 500 kW, según las características de la instalación combinada y siendo inversamente correlacionada a la presión expedida por el soplador S.
Aunque la presente invención haya sido descrita con relación a un modo de realización particular, no se encuentra limitada sino por el contrario es susceptible de modificaciones y de variantes que aparecerán al hombre del arte permaneciendo dentro del marco de las reivindicaciones a continuación.

Claims (5)

1. Instalación combinada que comprende al menos un horno (FM) alimentado con aire comprimido por al menos un soplador (S), y al menos un aparato de destilación de aire alimentado al menos en parte por el soplador (S) y que suministra el oxígeno (O) al horno, el aparato comprendiendo al menos una columna de presión media (MP) que recibe el aire a la presión (P_{1}) del soplador y al menos una turbina criogénica (T) que expande una parte de este aire proveniente del soplador, y una columna de mezclado (CM) que suministra dicho oxígeno y que recibe el aire proveniente del soplador super-comprimido por un super-compresor (C) acoplado a la turbina (T), caracterizado porque el conjunto super-compresor/turbina criogénica (C-T) está acoplado a al menos un motor de asistencia auxiliar (EM).
2. Instalación según la reivindicación 1, caracterizado porque el motor de asistencia comprende al menos un motor eléctrico (EM).
3. Procedimiento de realización de una instalación combinada que comprende al menos un horno (FM) alimentado con aire comprimido por al menos un soplador (S) que suministra el aire a una primera presión (P_{1}) y con oxígeno por al menos un aparato de separación de aire, que comprende al menos una columna de presión media (MP)y una columna de mezclado (CM), alimentada con aire al menos en parte por el soplador (S), en el cual la columna de mezclado es alimentada con aire proveniente del soplador (S) y super-comprimido por un super-compresor (C) acoplado a al menos una turbina criogénica (T) que expande una parte del aire de alimentación del aparato de destilación, caracterizado porque comprende la etapa de aportar al conjunto super-compresor/turbina una energía de asistencia para mantener en la columna de mezclado (CM) una super-compresión comprendida entre aproximadamente 0,4 x 10^{5} Pa y 0,8 x 10^{5} Pa con relación a la presión (P_{1}) de salida del soplador.
4. Procedimiento según la reivindicación 3, caracterizado porque la energía de asistencia es una energía eléctrica.
5. Procedimiento según la reivindicación 4, caracterizado porque la energía de asistencia está comprendida entre 30 y 500 kw.
ES99900984T 1998-01-23 1999-01-22 Instalacion combinada de un horno y de un aparato de destilacion de aire y procedimiento de puesta en practica. Expired - Lifetime ES2292231T3 (es)

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FR9800723 1998-01-23
FR9800723A FR2774158B1 (fr) 1998-01-23 1998-01-23 Installation combinee d'un four et d'un appareil de distillation d'air et procede de mise en oeuvre

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AT (1) ATE372493T1 (es)
AU (1) AU740591B2 (es)
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CA (1) CA2284167C (es)
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FR2782154B1 (fr) * 1998-08-06 2000-09-08 Air Liquide Installation combinee d'un appareil de production de fluide de l'air et d'une unite dans laquelle se produit une reaction chimique et procede de mise en oeuvre
US6192707B1 (en) * 1999-11-12 2001-02-27 Praxair Technology, Inc. Cryogenic system for producing enriched air
US6282901B1 (en) 2000-07-19 2001-09-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Integrated air separation process
EP1197717A1 (en) * 2000-10-12 2002-04-17 Linde Aktiengesellschaft Process and apparatus for air separation
FR2862004B3 (fr) * 2003-11-10 2005-12-23 Air Liquide Procede et installation d'enrichissement d'un flux gazeux en l'un de ses constituants
FR2862128B1 (fr) * 2003-11-10 2006-01-06 Air Liquide Procede et installation de fourniture d'oxygene a haute purete par distillation cryogenique d'air
FR2864214B1 (fr) * 2003-12-22 2017-04-21 Air Liquide Appareil de separation d'air, appareil integre de separation d'air et de production d'un metal et procede de demarrage d'un tel appareil de separation d'air
DE102006039616B3 (de) * 2006-08-24 2008-04-03 Eberhard Otten Verfahren und Vorrichtung zur Speicherung von Brenngas, insbesondere Erdgas

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FR2504992B1 (fr) * 1981-04-30 1986-11-14 Valbrev Combinaison d'une turbo-machine de compression ou de detente et d'un moteur electrique
FR2677667A1 (fr) * 1991-06-12 1992-12-18 Grenier Maurice Procede d'alimentation d'un haut-fourneau en air enrichi en oxygene, et installation de reduction de minerai de fer correspondante.
GB9208647D0 (en) * 1992-04-22 1992-06-10 Boc Group Plc Air separation
US5582036A (en) * 1995-08-30 1996-12-10 Praxair Technology, Inc. Cryogenic air separation blast furnace system

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EP0970336A1 (fr) 2000-01-12
AU740591B2 (en) 2001-11-08
FR2774158B1 (fr) 2000-03-17
JP2001516439A (ja) 2001-09-25
DE69937022T2 (de) 2008-05-29
CN1255967A (zh) 2000-06-07
DE69937022D1 (de) 2007-10-18
BR9904783A (pt) 2000-03-08
ATE372493T1 (de) 2007-09-15
AU2061899A (en) 1999-08-09
KR100567646B1 (ko) 2006-04-05
EP0970336B1 (fr) 2007-09-05
KR20000076374A (ko) 2000-12-26
CA2284167C (fr) 2008-04-15
US6122932A (en) 2000-09-26
FR2774158A1 (fr) 1999-07-30
WO1999037963A1 (fr) 1999-07-29
CA2284167A1 (fr) 1999-07-29

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