RU2006120410A - METHOD AND INSTALLATION FOR PROVIDING HIGH FREQUENCY OXYGEN BY CRYOGENIC AIR DISTILLATION - Google Patents

METHOD AND INSTALLATION FOR PROVIDING HIGH FREQUENCY OXYGEN BY CRYOGENIC AIR DISTILLATION Download PDF

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RU2006120410A
RU2006120410A RU2006120410/06A RU2006120410A RU2006120410A RU 2006120410 A RU2006120410 A RU 2006120410A RU 2006120410/06 A RU2006120410/06 A RU 2006120410/06A RU 2006120410 A RU2006120410 A RU 2006120410A RU 2006120410 A RU2006120410 A RU 2006120410A
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oxygen
column
air
stage
supplied
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RU2006120410/06A
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RU2354902C2 (en
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Ален ГИЙЯР (FR)
Ален ГИЙЯР
Жан-Жак ШОЛЛА (FR)
Жан-Жак ШОЛЛА
Ксавье ПОНТОН (FR)
Ксавье ПОНТОН
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Л`Эр Ликид Сосьете Аноним А Директуар Э Консей Де Сюрвейянс Пур Л`Этюд Э Л`Эксплуатасьон Де Проседе Жорж Клод (Fr)
Л`Эр Ликид Сосьете Аноним А Директуар Э Консей Де Сюрвейянс Пур Л`Этюд Э Л`Эксплуатасьон Де Проседе Жорж Клод
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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
    • F25J3/04951—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network
    • 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
    • F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
    • F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • 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
    • 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
    • F25J3/04593—The air gas consuming unit is also fed by an air stream
    • F25J3/04606—Partially integrated air feed compression, i.e. independent MAC for the air fractionation unit plus additional air feed from the air gas consuming 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
    • 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
    • F25J3/04812—Different modes, i.e. "runs" of operation
    • 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
    • F25J3/04812—Different modes, i.e. "runs" of operation
    • F25J3/04824—Stopping of the process, e.g. defrosting or deriming; Back-up procedures
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/02—Mixing or blending of fluids to yield a certain product
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
    • F25J2215/52—Oxygen production with multiple purity O2
    • 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

Claims (10)

1. Способ обеспечения кислородом высокой чистоты путем криогенной дистилляции воздуха посредством установки, содержащей первый (1) и второй (2) аппараты разделения воздуха, причем первый аппарат разделения воздуха содержит колонну среднего давления (2A), колонну низкого давления(4A), находящуюся в тепловой взаимосвязи с колонной среднего давления, и колонну смешения (6A), причем1. A method of providing high purity oxygen by cryogenic air distillation by means of an apparatus comprising first (1) and second (2) air separation apparatuses, the first air separation apparatus comprising a medium pressure column (2A), a low pressure column (4A) located in thermal relationship with the medium pressure column, and the mixing column (6A), and i) воздух на дистилляцию подают в колонну среднего давления,i) distillation air is supplied to a medium pressure column, ii) жидкости, обогащенные кислородом и азотом, подают из колонны среднего давления в колонну низкого давления,ii) liquids enriched with oxygen and nitrogen are supplied from the medium pressure column to the low pressure column, iii) на первом этапе работы аппарата в верх колонны смешения подают поток жидкости, обогащенной кислородом, из колонны низкого давления,iii) at the first stage of operation of the apparatus, a stream of oxygen-enriched liquid from a low-pressure column is supplied to the top of the mixing column iv) на первом этапе работы с верха колонны смешения отбирают поток кислорода невысокой чистоты и подают, по меньшей мере, часть его на первую потребляющую установку (5),iv) at the first stage of operation, a low-purity oxygen stream is taken from the top of the mixing column and at least a part of it is supplied to the first consuming unit (5), v) на первом этапе работы подают воздух в колонну смешения,v) at the first stage of operation, air is supplied to the mixing column, vi) на первом этапе работы второй аппарат обеспечивает кислород высокой чистоты для второй потребляющей установки (9),vi) in the first stage of operation, the second apparatus provides high-purity oxygen for the second consuming installation (9), отличающийся тем, чтоcharacterized in that vii) на втором этапе работы в первом аппарате снижают при необходимости до нуля поток жидкости, обогащенной кислородом, введенной в верх колонны смешения, снижают при необходимости до нуля поток воздуха, поданного в колонну смешения, и снижают при необходимости до нуля поток кислорода невысокой чистоты, отобранного сверху колонны смешения, иvii) in the second stage of operation in the first apparatus, if necessary, the flow of oxygen-enriched liquid introduced into the top of the mixing column is reduced to zero, the flow of air supplied to the mixing column is reduced to zero, if necessary, and the oxygen stream of low purity is reduced to zero, if necessary, selected from above the mixing column, and viii) на втором этапе работы отводят в куб колонны низкого давления первого аппарата поток, обогащенный кислородом высокой чистоты, и подают его, по меньшей мере, на вторую потребляющую установку.viii) at the second stage of operation, a stream enriched with high purity oxygen is diverted into the cube of the low pressure column of the first apparatus, and it is supplied to at least the second consuming installation. 2. Способ по п. 1, в котором на втором этапе работы второй аппарат (2) не снабжает кислородом высокой чистоты вторую потребляющую установку (9) или снабжает только частью кислорода высокой чистоты, требующегося второй потребляющей установке.2. The method according to claim 1, in which, in the second stage of operation, the second apparatus (2) does not supply high purity oxygen to the second consuming installation (9) or supplies only part of the high purity oxygen required by the second consuming installation. 3. Способ по п. 1, в котором первая потребляющая установка (5) является доменной печью, а вторая потребляющая установка (9) является конвертером или дуговой печью.3. The method according to claim 1, in which the first consuming installation (5) is a blast furnace, and the second consuming installation (9) is a converter or an arc furnace. 4. Способ по п. 3, в котором на первом этапе доменная печь (5) снабжается воздухом, обогащенным кислородом, а на втором этапе доменная печь снабжается или воздухом, или воздухом, менее обогащенным кислородом, чем тот, которым она снабжалась на первом этапе.4. The method according to p. 3, in which at the first stage the blast furnace (5) is supplied with oxygen enriched air, and in the second stage the blast furnace is supplied with either air or air less enriched with oxygen than that which it was supplied at the first stage . 5. Способ по одному из пп.1-4, в котором колонна смешения (6A) на втором этапе не работает.5. The method according to one of claims 1 to 4, in which the mixing column (6A) in the second stage does not work. 6. Способ по одному из пп.1-4, в котором вторая потребляющая установка (9) на первом этапе питается кислородом только из второго аппарата разделения воздуха (2), а на втором этапе работы питается только кислородом, поступающим из первого аппарата (1).6. The method according to one of claims 1 to 4, in which the second consuming installation (9) at the first stage is supplied with oxygen only from the second air separation apparatus (2), and at the second stage of operation it is powered only with oxygen coming from the first device (1 ) 7. Установка обеспечения кислородом путем криогенной дистилляции воздуха, содержащая первый (1) и второй (2) аппараты разделения воздуха, причем первый аппарат разделения воздуха включает колонну среднего давления (2A), колонну низкого давления(4A), находящуюся в тепловой взаимосвязи с колонной среднего давления, и колонну смешения (6A), содержащая: 7. Installation of providing oxygen by cryogenic distillation of air, containing the first (1) and second (2) air separation apparatus, the first air separation apparatus includes a medium pressure column (2A), a low pressure column (4A), which is in thermal relationship with the column medium pressure, and a mixing column (6A) containing : a) средства для подачи воздуха на дистилляцию в колонну среднего давления,a) means for supplying distillation air to the medium pressure column, b) средства для подачи жидкости, обогащенной кислородом и азотом, из колонны среднего давления в колонну низкого давления,b) means for supplying a liquid enriched in oxygen and nitrogen from a medium pressure column to a low pressure column, c) средства для подачи в верх колонны смешения потока жидкости, обогащенной кислородом, поступающей из колонны низкого давления,c) means for supplying to the top of the mixing column a stream of oxygen-enriched liquid from the low pressure column, d) средства для подачи воздуха в куб колонны смешения,d) means for supplying air to the cube of the mixing column, e) средства для отбора с верха колонны смешения потока кислорода невысокой чистоты и средства для подачи, по меньшей мере, части его на первую потребляющую установку,e) means for withdrawing from the top of the mixing column a low-purity oxygen stream and means for supplying at least a portion of it to the first consuming installation, f) средства для подачи кислорода высокой чистоты из второго аппарата разделения воздуха на вторую потребляющую установку,f) means for supplying high purity oxygen from a second air separation apparatus to a second consuming installation, отличающаяся тем, что она содержитcharacterized in that it contains g) средства для снижения при необходимости до нуля потока жидкости, обогащенной кислородом, поданного в верх колонны смешения,g) means for reducing, if necessary, to zero, the flow of oxygen-enriched liquid supplied to the top of the mixing column, h) средства для снижения при необходимости до нуля потока воздуха, подаваемого в куб колонны смешения,h) means for reducing, if necessary, to zero the flow of air supplied to the cube of the mixing column, i) средства для отбора из куба колонны низкого давления первого аппарата потока кислорода высокой чистоты и средства для подачи этого потока на вторую потребляющую установку.i) means for withdrawing from the cube of the low pressure column of the first apparatus an oxygen stream of high purity and means for supplying this stream to a second consuming installation. 8. Установка по п. 7, в которой первая потребляющая установка (5) является доменной печью, а вторая потребляющая установка (9) является конвертером или дуговой печью.8. Installation according to claim 7, in which the first consuming installation (5) is a blast furnace, and the second consuming installation (9) is a converter or an arc furnace. 9. Установка по п. 8, содержащая средства для снабжения доменной печи (5) кислородом невысокой чистоты из первого аппарата (1) и средства для прекращения подачи кислорода невысокой чистоты из первого аппарата в доменную печь.9. Installation according to claim 8, comprising means for supplying the blast furnace (5) with oxygen of low purity from the first apparatus (1) and means for stopping the supply of oxygen of low purity from the first apparatus to the blast furnace. 10. Установка по одному из пп.7-9, содержащая, по меньшей мере, один компрессор (13) кислорода высокой чистоты, расположенный до второй потребляющей установки (9) и за первым аппаратом (1) разделения воздуха.10. Installation according to one of claims 7 to 9, comprising at least one high purity oxygen compressor (13) located before the second consuming installation (9) and behind the first air separation apparatus (1).
RU2006120410/06A 2003-11-10 2004-11-10 Method and installation for high purity oxygen provision by means of cryogenic distillation of air RU2354902C2 (en)

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