SU1416820A1 - Method of producing pure argon - Google Patents

Method of producing pure argon Download PDF

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Publication number
SU1416820A1
SU1416820A1 SU864159641A SU4159641A SU1416820A1 SU 1416820 A1 SU1416820 A1 SU 1416820A1 SU 864159641 A SU864159641 A SU 864159641A SU 4159641 A SU4159641 A SU 4159641A SU 1416820 A1 SU1416820 A1 SU 1416820A1
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USSR - Soviet Union
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zone
pressure
oxygen
argon
fed
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SU864159641A
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Russian (ru)
Inventor
Виктор Петрович Беляков
Георгий Борисович Наринский
Василий Егорович Карпов
Алексей Иванович Ляпин
Вадим Александрович Гарин
Виктор Иванович Зотов
Юрий Георгиевич Писарев
Виталий Константинович Волков
Любовь Андреевна Арсентьева
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Предприятие П/Я А-3605
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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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04654—Producing crude argon in a crude argon column
    • F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
    • F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
    • F25J3/04678—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser cooled by oxygen enriched liquid from high pressure column bottoms
    • 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04654—Producing crude argon in a crude argon column
    • F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
    • F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
    • F25J3/04703—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser being arranged in more than one vessel
    • 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04654—Producing crude argon in a crude argon column
    • F25J3/04709—Producing crude argon in a crude argon column as an auxiliary column system in at least a dual pressure main column system
    • 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04721—Producing pure argon, e.g. recovered from a crude argon column
    • F25J3/04727—Producing pure argon, e.g. recovered from a crude argon column using an auxiliary pure argon column for nitrogen rejection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • F25J3/04878—Side by side arrangement of multiple vessels in a main column system, wherein the vessels are normally mounted one upon the other or forming different sections of the same 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/58—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being argon or crude argon
    • 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
    • F25J2235/58—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being argon or crude argon

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

Abstract

Изобретение относитс  к криогенной технике и м.б. использовано при разделении воздуха методом низ- кот-рной ректификации на воздухораз- делительных установках, предназначенных дл  получени  чистого аргона. Цель изобретени  - повьтение экономичности ; путем сокращени  капитальных и эксплуатационных затрат. Чистый аргон получают из смеси, содержащей кислород, аргон и азот, методом ректификации с получением газового и жидкостного потоков сначала в первой зоне 1 низкого давлени , а затем во второй зоне 4 низкого давлени  с частичной очисткой от кислорода . Дополнительно ввод т третью зону 7 с повьшенным давлением по отношению к верхним част м зон 1 и 4. Давление в верхней части зоны 4 снижают до атмосферного. Газовый поток из верхней части зоны 4 подают на вход дожимающего устройства 5, где сжимают до давлени  зоны 7 и по . трубопроводу 6 подают в нижнюю часть зоны 7. Обогащенный кислородом жидкостный поток из нижней части зоны 7 под давлением, создаваемым насо сом 9, по трубопроводу 8 возвращают в верхнюю часть зоны 4. Газовый поток перед сжатием после зоны 4 м.б. нагрет теплом полученного сжатого потока, который нужно предварительно охладить внешним теплоносителем. 1 3.п. ф-лы,, 2 ил. :-8 (ЛThe invention relates to cryogenic engineering and m. used in air separation by low-temperature distillation in air separation plants designed to produce pure argon. The purpose of the invention is to increase efficiency; by reducing capital and operating costs. Pure argon is obtained from a mixture containing oxygen, argon and nitrogen, using a distillation method to obtain gas and liquid streams, first in the first low pressure zone 1 and then in the second low pressure zone 4 with partial purification from oxygen. Additionally, a third zone 7 is introduced with an increased pressure with respect to the upper parts of zones 1 and 4. The pressure in the upper part of zone 4 is reduced to atmospheric. The gas stream from the upper part of zone 4 is fed to the inlet of the booster device 5, where it is compressed to the pressure of zone 7 and along. Pipeline 6 is fed to the lower part of zone 7. The oxygen-enriched liquid stream from the lower part of zone 7 under pressure from pump 9 is returned to the upper part of zone 4 by pipeline 8. Gas flow before compression after zone 4 may be. heated by the heat of the obtained compressed stream, which must be pre-cooled by an external coolant. 1 3.p. f-ly, 2 ill. : -8 (L

Description

JJ

ИзобретениеInvention

относитс  к криоген- ной технике, а точнее к разделению воздуха методом низкотемпературной ректификации, и может быть использо- при комплексном разделении воздуха на воздухоразделительных уста- i OBKax, предназначенных дл  получе- йи  чистого аргона.refers to the cryogenic technique, or rather to the air separation by the method of low-temperature rectification, and can be used for complex air separation into air separation plants i OBKax, designed to obtain pure argon.

Целью изобретени   вл етс  повы- шение экономичности путем сокращени  1|:апитальных и эксплуатационных атрат.The aim of the invention is to improve the economy by reducing 1 |: apital and operational costs.

I На фиг, 1 показано устройство, в котором реализовали предлагаемый спо- Срб получени  чистого аргона; на г. 2 - устройство с дожимающим устройством .I Fig. 1 shows a device in which the proposed method Srb for producing pure argon was realized; on r. 2 - a device with a booster device.

Устройство содержит первую зону 1The device contains the first zone 1

йиэкого давлени , котора  посредством20 создани  давлени  насосом 9 или заThis pressure, which by means of 20 pressures by pump 9 or

трубопроводов 2 и 3 соединена со {второй зоной А низкого давлени . До- 1жш4ающее устройство 5 трубопроводом 16 соединено с третьей зоной 7 повышенного давлени . Нижн   часть третьей зоны 7 трубопроводом 8 и насосом 9 соединена с верхней частью второй зоны 4 низкого давлени . Трубопровод 10  вл етс  байпасом насоса 9. Треть  зона 7 повьш1енного давлени  трубопроводом 11 св зана с узлом 12 получени  чистого аргона. Дожимающее устройство 5 посредством устройства 13, устройства 14 и тру-, бопровода 6 св зано с нижней частью третьей зоны 7.pipelines 2 and 3 are connected to the second low pressure zone A. The upstream device 5 is connected to a third pressure zone 7 by a pipe 16. The lower part of the third zone 7 is connected by a pipeline 8 and a pump 9 to the upper part of the second low pressure zone 4. Pipeline 10 is a bypass of pump 9. A third zone 7 of the increased pressure pipe 11 is connected to the unit 12 for producing pure argon. The booster device 5 by means of the device 13, the device 14 and the pipe and tube 6 is connected with the lower part of the third zone 7.

2525

30thirty

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счет гидростатического столба (труб провод 10) в качестве флегмы подают в верхнюю часть второй зоны 4 низко го давлени . Очищенный от кислород поток из верхней части третьей зоны 7 по трубопроводу 11 подают в узел 12 получени  чистого аргона.the hydrostatic column account (pipe wire 10) as reflux is fed to the upper part of the second low pressure zone 4. The oxygen-free stream from the upper part of the third zone 7 is fed via conduit 11 to the pure argon production unit 12.

При работе устройства, когда газовый поток перед дополнительным сж тием нагревают в теплообмене со сжа тым потоком, который предварительно охлаждают внешним теплоносителем, устройство (фиг. 2), в которой реал зован предлагаемый способ, работает следующим образом.When the device is in operation, when the gas stream is heated before heat in a heat exchange with a compressed stream that is previously cooled by an external heat carrier, the device (Fig. 2), in which the proposed method is implemented, works as follows.

В процессе разделени  воздуха с получением аргона методом низкотемп ратурной ректификации из средней ча ти первой зоны 1 низкого давлени  п трубопроводу, 2 вывод т газообразную смесь, содержащую кислород, аргон и азот, и подают в нижнюю часть вто рой зоны 4 низкого давлени . В последней производ т предварительную очистку от кислорода методом низкотемпературной ректификации. Обогаще ную кислородом жидкость из нижней части второй зоны 4 по трубопроводу 3 возвращают в среднюю часть первой зоны 1 низкого давлени .In the process of air separation to produce argon by low-temperature distillation from the middle part of the first low pressure zone 1 and pipeline, 2 the gaseous mixture containing oxygen, argon and nitrogen is removed and fed to the lower part of the second low pressure zone 4. In the latter, preliminary purification from oxygen is carried out by the method of low-temperature distillation. The oxygen-rich liquid from the bottom of the second zone 4 is returned via conduit 3 to the middle part of the first low pressure zone 1.

Устройство (фиг. 1), в котором реализован предлагаемый способ, работает следунлцим образом.The device (Fig. 1), in which the proposed method is implemented, works in the following way.

В процессе разделени  воздуха с 40 получением аргона методом низкотемпературной ректификации из средней части первой зоны 1 низкого давле- ни  по трубопроводу 2 вывод т газо- образную смесь, содержащую кислород, 45 аргон, азот, и подают в нижнюю часть второй зоны 4 низкого давлени . В последней производ т предварительную очистку от кислорода методом низкотемпературной ректификации. Обо- jO гащенную кислородом жидкость из нижней части второй зоны 4 по трубопроводу 3 возвращают в среднюю часть первой зоны 1 низкого давлени .In the process of air separation with 40 argon production by low-temperature distillation, a gaseous mixture containing oxygen, 45 argon, nitrogen, is fed through the pipeline 2 from the middle part of the first low pressure zone 1 and fed to the bottom of the second low pressure zone 4. In the latter, preliminary purification from oxygen is carried out by the method of low-temperature distillation. The oxygen-wetted oxygen from the bottom of the second zone 4 is returned via conduit 3 to the middle part of the first low pressure zone 1.

Обедненный кислородом газовый по- ток из верхней части второй зоны 4 низкого давлени  подают на вход дожимающего устройства 5, где сжимают до давлени  третьей зоны 7 и поAn oxygen-depleted gas stream from the upper part of the second low pressure zone 4 is fed to the inlet of the booster device 5, where it is compressed to the pressure of the third zone 7 and

трубопроводу 6 подают в нижнюю часть третьей зоны 7. Давление в третьей зоне 7 зависит от конкретной схемы, но должно быть более-невысоким, чем давление в верхних част х первой и второй зон 1 и 4 низкого давлени  и и определ етс  суммой гидравлических сопротивлений третьей зоны 7 при последующей очистке от азота, а также Давлением выдаваемого чистого аргона .pipeline 6 is fed to the lower part of the third zone 7. The pressure in the third zone 7 depends on the particular circuit, but must be lower than the pressure in the upper parts of the first and second low pressure zones 1 and 4 and is determined by the sum of the third hydraulic resistances zone 7 in the subsequent purification of nitrogen, as well as the pressure of the pure argon produced.

В третьей зоне 7 повышенного давлени  происходит окончательна  очистка газового потока от кислорода методом низкотемпературной ректификации. Из нижней части третьей зоны 7 по трубопроводу 8 вывод т обогащенную кислородом жидкость и посредствомIn the third zone 7 of the overpressure, the final purification of the gas stream from oxygen occurs by the method of low-temperature distillation. From the lower part of the third zone 7, the oxygen-enriched liquid is removed via pipeline 8 and

0 создани  давлени  насосом 9 или за0 creating pressure by pump 9 or beyond

5five

00

5five

0 5 O 0 5 o

счет гидростатического столба (трубо- провод 10) в качестве флегмы подают в верхнюю часть второй зоны 4 низкого давлени . Очищенный от кислорода поток из верхней части третьей зоны 7 по трубопроводу 11 подают в узел 12 получени  чистого аргона.the hydrostatic column account (pipe 10) as reflux is fed to the upper part of the second low pressure zone 4. The oxygen-free stream from the upper part of the third zone 7 is supplied via conduit 11 to the pure argon production unit 12.

При работе устройства, когда газовый поток перед дополнительным сжатием нагревают в теплообмене со сжатым потоком, который предварительно охлаждают внешним теплоносителем, устройство (фиг. 2), в которой реали- зован предлагаемый способ, работает следующим образом.During operation of the device, when the gas stream is heated in heat exchange with a compressed stream, which is previously cooled by an external heat carrier, before an additional compression, the device (Fig. 2), in which the proposed method is implemented, works as follows.

В процессе разделени  воздуха с получением аргона методом низкотемпе- ратурной ректификации из средней части первой зоны 1 низкого давлени  по трубопроводу, 2 вывод т газообразную смесь, содержащую кислород, аргон и азот, и подают в нижнюю часть второй зоны 4 низкого давлени . В последней производ т предварительную очистку от кислорода методом низкотемпературной ректификации. Обогащенную кислородом жидкость из нижней части второй зоны 4 по трубопроводу 3 возвращают в среднюю часть первой зоны 1 низкого давлени .In the process of separating air to produce argon by low-temperature distillation from the middle part of the first low pressure zone 1 through a pipeline, 2 the gaseous mixture containing oxygen, argon and nitrogen is removed and fed to the bottom of the second low pressure zone 4. In the latter, preliminary purification from oxygen is carried out by the method of low-temperature distillation. The oxygen-enriched fluid from the bottom of the second zone 4 is returned via conduit 3 to the middle part of the first low pressure zone 1.

Обедненньй кислородом газовый поток из верхней части второй зоны 4 низкого давлени  подают на вход устройства 14, где нагревают в теплообмене со сжатым потоком, а затем подают на дожимающее устройство 5. Сжатый поток охлаждают предварительно внешний теплоносителем в устройстве 13, а затем в устройстве 14 иAn oxygen-depleted gas stream from the upper part of the second low-pressure zone 4 is fed to the inlet of the device 14, where it is heated in heat exchange with a compressed stream, and then fed to the booster device 5.

314314

по трубопроводу 6 подают в нижнюю часть третьей зоны 7 повышенного дав- лени  Давление в третьей зоне 7 повышенного давлени  зависит от конкретной схемы, но должно бытВ более высоким, чем давление верхних част х первой и второй зон 1 и 4 низкого д г лени .The pipeline 6 is supplied to the lower part of the third pressure zone 7. The pressure in the third pressure zone 7 depends on the particular scheme, but it must be higher than the pressure of the upper parts of the first and second zones 1 and 4 of low g.

Claims (2)

1. Способ получени  чистого арго- на из смеси, содержащей кислород,1. The method of obtaining pure argon from a mixture containing oxygen 68206820 аргон, азот, путем ее ректификации с получением газового и жидкостного потоков сначала в первой зоне низкого давлени , а атем во второй зоне низкого давлени  с частичной очисткой от кислорода, отличающйй- с   тем, что, с целью повышени  экономичности путем сокращени  капиталь10 ных и эксплуатационных затрат, дополнительно ввод т третью зону с по- вышеннБ1М давлением по отношению к верхним част м первой и второй зон, давление в верхней части второй зоныargon, nitrogen, by its distillation to produce gas and liquid streams, first in the first low pressure zone, and then in the second low pressure zone with partial purification from oxygen, which, in order to increase efficiency by reducing capital and operational costs, an additional zone is additionally introduced, with an increased B1M pressure relative to the upper parts of the first and second zones, the pressure in the upper part of the second zone 15 снижают до атмосферного, газовый поток из верхней части второй зоны сжимают до давлени  третьей зоны и подают в нижнюю часть этой зоны, а обогащенньй кислородом жидкостный15 is reduced to atmospheric, the gas flow from the upper part of the second zone is compressed to the pressure of the third zone and fed to the lower part of this zone, and the oxygen-enriched liquid 0 поток из нижней части третьей зоны под давлением возвращают в верхнк о часть второй зоны.0, the flow from the bottom of the third zone under pressure is returned to the upper part of the second zone. 2. Способ по п. 1, отличающийс  тем, что газовый поток2. The method according to claim 1, characterized in that the gas stream 25 перед сжатием после второй зоны нагревают теплом полученного сжатого потока, который предварительно охлаждают внешним теплоносителем.25 before compression, after the second zone, the resulting compressed stream is heated with heat, which is pre-cooled by an external heat transfer medium.
SU864159641A 1986-12-12 1986-12-12 Method of producing pure argon SU1416820A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983194A (en) * 1990-02-02 1991-01-08 Air Products And Chemicals, Inc. Production of high purity argon
US4994098A (en) * 1990-02-02 1991-02-19 Air Products And Chemicals, Inc. Production of oxygen-lean argon from air
US5682767A (en) * 1996-11-18 1997-11-04 Air Liquide Process And Construction Argon production

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Криогенное оборудование. Каталог. Ч. 2, М.: ЦИНТИХимнефтемаш, 1976, с. 4. ,(54) СПОСОБ ПОЛУЧЕНИЯ ЧИСТОГО АРГОНА ИЗ СМЕСИ *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983194A (en) * 1990-02-02 1991-01-08 Air Products And Chemicals, Inc. Production of high purity argon
US4994098A (en) * 1990-02-02 1991-02-19 Air Products And Chemicals, Inc. Production of oxygen-lean argon from air
US5682767A (en) * 1996-11-18 1997-11-04 Air Liquide Process And Construction Argon production

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