RU2019101433A - METHOD FOR PRODUCING AIR GASES BY CRYOGENIC SEPARATION OF AIR - Google Patents

METHOD FOR PRODUCING AIR GASES BY CRYOGENIC SEPARATION OF AIR Download PDF

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RU2019101433A
RU2019101433A RU2019101433A RU2019101433A RU2019101433A RU 2019101433 A RU2019101433 A RU 2019101433A RU 2019101433 A RU2019101433 A RU 2019101433A RU 2019101433 A RU2019101433 A RU 2019101433A RU 2019101433 A RU2019101433 A RU 2019101433A
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pressure
air
pipeline
product
stream
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RU2019101433A
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RU2741174C2 (en
RU2019101433A3 (en
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Пол Конг
Минх ПХАМ-ХОЙ
Венди ЙИП
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Л'Эр Ликид, Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод
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Priority claimed from US15/382,902 external-priority patent/US10267561B2/en
Priority claimed from US15/382,896 external-priority patent/US10302356B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
    • F25J3/04084—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 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
    • 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
    • F25J3/04248—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
    • F25J3/04406—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
    • F25J3/04521—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
    • 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
    • F25J3/04836—Variable air feed, i.e. "load" or product demand during specified periods, e.g. during periods with high respectively low power costs
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/60—Details about pipelines, i.e. network, for feed or product distribution

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Claims (34)

1. Способ получения воздушных газов путем криогенного разделения воздуха, при этом способ включает этапы:1. A method for producing air gases by cryogenic air separation, the method comprising the steps: - сжатия (10) воздуха (2) до давления, подходящего для криогенной ректификации воздуха, с получением потока (12) сжатого влажного воздуха, при этом поток сжатого влажного воздуха имеет первое давление Po;- compression (10) of air (2) to a pressure suitable for cryogenic rectification of air, with obtaining a stream (12) of compressed moist air, while the stream of compressed moist air has a first pressure P o ; - очистки потока сжатого влажного воздуха от воды и диоксида углерода в системе (20) предварительной очистки с получением потока (22) сухого воздуха, имеющего меньшие количества воды и диоксида углерода по сравнению с потоком (12) сжатого влажного воздуха;- purification of the stream of compressed moist air from water and carbon dioxide in the system (20) of preliminary purification to obtain a stream (22) of dry air having smaller amounts of water and carbon dioxide compared to the stream (12) of compressed moist air; - сжатия первой части потока (24) сухого воздуха в бустер-компрессоре (30) с образованием потока (32) пережатого воздуха, при этом поток пережатого воздуха имеет первое давление PB1 пережатия;- compression of the first part of the stream (24) of dry air in the booster compressor (30) with the formation of a stream (32) of compressed air, while the stream of compressed air has the first pressure P B1 of compression; - введения второй части потока (26) сухого воздуха и потока пережатого воздуха в холодильную камеру (40) при условиях, эффективных для разделения воздуха, с образованием продукта (42) воздушного газа, при этом продукт воздушного газа имеет первое давление PP1 продукта, при этом продукт воздушного газа выбирают из группы, состоящей из кислорода, азота и их комбинаций;- introducing the second part of the dry air stream (26) and the compressed air stream into the refrigerating chamber (40) under conditions effective for air separation, with the formation of an air gas product (42), while the air gas product has the first product pressure P P1 , at the product of the air gas is selected from the group consisting of oxygen, nitrogen, and combinations thereof; - отбора продукта воздушного газа из холодильной камеры;- selection of air gas product from the refrigerating chamber; - введения продукта воздушного газа в трубопровод (60), при этом трубопровод приспособлен для транспортировки продукта воздушного газа в место, расположенное ниже по потоку от трубопровода, при этом трубопровод работает при давлении PPL трубопровода, при этом продукт воздушного газа вводят в трубопровод при первом давлении PD1 доставки;- introducing an air gas product into the pipeline (60), while the pipeline is adapted for transporting the air gas product to a place located downstream of the pipeline, while the pipeline operates at the pipeline pressure P PL , while the air gas product is introduced into the pipeline at the first delivery pressure P D1 ; - отслеживания давления PPL (PI3) трубопровода внутри трубопровода; и- monitoring the pressure P PL (PI3) of the pipeline inside the pipeline; and - регулирования одной или нескольких заданных величин давления в холодильной камере на основе давления PPL трубопровода.- regulation of one or more preset pressure values in the refrigerating chamber based on the pipeline pressure P PL . 2. Способ по п. 1, отличающийся тем, что одна или несколько заданных величин давления согласно этапу 0 представляют собой первое давление PP1 продукта.2. The method of claim 1, wherein one or more of the predetermined pressures according to step 0 is the first product pressure P P1 . 3. Способ по любому из пп. 1 и 2, отличающийся тем, что первое давление PB1 пережатия регулируют так, чтобы разность между первым давлением PD1 доставки и давлением PPL трубопровода находилась ниже данного порогового значения, при этом данное пороговое значение составляет предпочтительно менее 5 фунтов на квадратный дюйм, более предпочтительно менее 3 фунтов на квадратный дюйм.3. A method according to any one of claims. 1 and 2, characterized in that the first clamping pressure P B1 is adjusted such that the difference between the first delivery pressure P D1 and the pipeline pressure P PL is below a given threshold, the threshold being preferably less than 5 psi, more preferably less than 3 psi. 4. Способ по любому из пп. 1-3, отличающийся тем, что холодильная камера содержит главный теплообменник (80), систему колонн, имеющую двойную колонну (110), состоящую из колонны (140) более низкого давления и колонны (120) более высокого давления, конденсатор (150), расположенный в нижней части колонны более низкого давления, и насос (160) для жидкого кислорода.4. A method according to any one of claims. 1-3, characterized in that the refrigerating chamber contains a main heat exchanger (80), a column system having a double column (110), consisting of a column (140) of a lower pressure and a column (120) of a higher pressure, a condenser (150), located at the bottom of the lower pressure column, and a pump (160) for liquid oxygen. 5. Способ по п. 4, отличающийся тем, что продуктом воздушного газа является кислород, и трубопроводом является трубопровод кислорода, и при этом насос для жидкого кислорода повышает давление жидкого кислорода из колонны более низкого давления до первого давления PP1 продукта.5. A method according to claim 4, wherein the product of the air gas is oxygen and the conduit is an oxygen conduit, and wherein the liquid oxygen pump increases the pressure of the liquid oxygen from the lower pressure column to the first product pressure P P1 . 6. Способ по любому из пп. 1-5, отличающийся тем, что первое давление PP1 продукта регулируют на основе отслеживаемого давления PPL трубопровода.6. The method according to any one of claims. 1-5, characterized in that the first product pressure P P1 is controlled based on the monitored pipeline pressure P PL . 7. Способ по п. 6, отличающийся тем, что первое давление PB1 пережатия регулируют на основе первого давления PP1 продукта.7. A method according to claim 6, characterized in that the first clamping pressure P B1 is adjusted based on the first product pressure P P1 . 8. Способ по п. 4, отличающийся тем, что продуктом воздушного газа является азот, и трубопроводом является трубопровод азота.8. A method according to claim 4, wherein the product of the air gas is nitrogen and the pipeline is a nitrogen pipeline. 9. Способ получения воздушных газов путем криогенного разделения воздуха, при этом способ предусматривает первый режим работы и второй режим работы, при этом во время первого режима работы и второго режима работы способ включает этапы:9. A method for producing air gases by cryogenic air separation, wherein the method provides for the first mode of operation and the second mode of operation, while during the first mode of operation and the second mode of operation, the method includes the steps: передачи потока (26, 32) очищенного и сжатого воздуха в холодильную камеру (40) при условиях, эффективных для криогенного разделения потока воздуха, с образованием продукта (42) воздушного газа с помощью системы колонн (110), при этом поток очищенного и сжатого воздуха находится под давлением PF подачи при попадании в холодильную камеру, при этом продукт воздушного газа выбирают из группы, состоящей из кислорода, азота и их комбинаций;transferring the stream (26, 32) of purified and compressed air to the refrigerating chamber (40) under conditions effective for cryogenic separation of the air stream, with the formation of a product (42) air gas using a system of columns (110), while the stream of purified and compressed air is under the supply pressure P F when entering the refrigerating chamber, while the product of the air gas is selected from the group consisting of oxygen, nitrogen and combinations thereof; отбора продукта воздушного газа из холодильной камеры при давлении PPO продукта;taking product air gas from the refrigerating chamber at product pressure P PO ; доставки продукта воздушного газа при давлении PDO доставки в трубопровод (60) воздушного газа, при этом трубопровод воздушного газа имеет давление PPL трубопровода;delivering an air gas product at a pressure P DO of delivering an air gas to the pipeline (60), the air gas pipeline having a pipeline pressure P PL ; при этом во время второго режима работы способ дополнительно включает этапы:while during the second mode of operation, the method additionally includes the steps: отслеживания давления PPL (PI3) трубопровода; иmonitoring the pressure P PL (PI3) of the pipeline; and уменьшения разности между давлением PPL трубопровода и давлением PDO доставки.reducing the difference between the pressure P PL of the pipeline and the pressure P DO of the delivery. 10. Способ по п. 9, отличающийся тем, что этап уменьшения разности между давлением PPL трубопровода и давлением PDO доставки дополнительно включает регулирование давления PPO продукта при нахождении в холодильной камере.10. The method of claim 9, wherein the step of reducing the difference between the pipeline pressure P PL and the delivery pressure P DO further comprises adjusting the product pressure P PO while in the refrigerating chamber. 11. Способ по п. 9 или 10, отличающийся тем, что этап уменьшения разности между давлением PPL трубопровода и давлением PDO доставки дополнительно включает этап регулирования давления PF (14а, 14b) подачи.11. The method according to claim 9 or 10, characterized in that the step of reducing the difference between the pipeline pressure P PL and the delivery pressure P DO further comprises the step of adjusting the supply pressure P F (14a, 14b). 12. Способ по любому из пп. 9-11, отличающийся тем, что давление PPO продукта и давление PDO доставки по существу одинаковые.12. The method according to any one of claims. 9-11, characterized in that the product pressure P PO and delivery pressure P DO are substantially the same. 13. Устройство для получения воздушных газов путем криогенного разделения воздуха, при этом устройство содержит:13. A device for producing air gases by cryogenic separation of air, while the device contains: - главный воздушный компрессор (10), приспособленный для сжатия воздуха (2) до давления, подходящего для криогенной ректификации воздуха, с получением потока (12) сжатого влажного воздуха, при этом поток сжатого влажного воздуха имеет первое давление Po;- the main air compressor (10), adapted to compress air (2) to a pressure suitable for cryogenic rectification of air, to obtain a stream (12) of compressed moist air, wherein the stream of compressed moist air has a first pressure P o ; - систему (20) предварительной очистки, приспособленную для очистки потока сжатого влажного воздуха от воды и диоксида углерода с получением потока (22) сухого воздуха, имеющего меньшие количества воды и диоксида углерода по сравнению с потоком сжатого влажного воздуха;- a preliminary cleaning system (20) adapted to purify the stream of compressed moist air from water and carbon dioxide to obtain a stream (22) of dry air having smaller amounts of water and carbon dioxide compared to the stream of compressed moist air; - бустер-компрессор (30), находящийся в сообщении по текучей среде с системой предварительной очистки, при этом бустер-компрессор приспособлен для сжатия первой части потока (24) сухого воздуха с образованием потока пережатого воздуха, при этом поток пережатого воздуха имеет первое давление PB1 пережатия;- a booster compressor (30) in fluid communication with the pre-cleaning system, while the booster compressor is adapted to compress the first part of the dry air stream (24) to form a compressed air stream, while the compressed air stream has a first pressure P B1 clamping; - холодильную камеру (40), содержащую главный теплообменник (80), систему колонн, имеющую двойную колонну (110), состоящую из колонны (140) более низкого давления и колонны (120) более высокого давления, конденсатор (150), расположенный на нижней части колонны более низкого давления, и насос (160) для жидкого кислорода, при этом холодильная камера приспособлена для приема потока (32) пережатого воздуха и второй части потока (26) сухого воздуха при условиях, эффективных для разделения воздуха, с образованием продукта воздушного газа, при этом продукт воздушного газа выбирают из группы, состоящей из кислорода, азота и их комбинаций;- a refrigerating chamber (40) containing a main heat exchanger (80), a system of columns having a double column (110), consisting of a column (140) of a lower pressure and a column (120) of a higher pressure, a condenser (150) located on the lower parts of the column of lower pressure, and a pump (160) for liquid oxygen, while the refrigerating chamber is adapted to receive a stream (32) of compressed air and a second part of a stream (26) of dry air under conditions effective for air separation, with the formation of an air gas product wherein the air gas product is selected from the group consisting of oxygen, nitrogen, and combinations thereof; - средство для отслеживания давления (PI3) трубопровода (60), при этом трубопровод находится в сообщении по текучей среде с холодильной камерой, так что трубопровод приспособлен для приема продукта воздушного газа из холодильной камеры, при этом продукт воздушного газа имеет первое давление PP1 продукта; и- means for monitoring the pressure (PI3) of the pipeline (60), while the pipeline is in fluid communication with the refrigerating chamber, so that the pipeline is adapted to receive an air gas product from the refrigerating chamber, while the air gas product has a first product pressure P P1 ; and - средство для регулирования одной или нескольких заданных величин давления устройства (55) на основе отслеживаемого давления трубопровода, при этом одну или несколько заданных величин давления устройства выбирают из группы, состоящей из давления нагнетания насоса (160) для жидкого кислорода, давления нагнетания воздушного бустер-компрессора (30), давления нагнетания главного воздушного компрессора (10) и их комбинаций.- means for adjusting one or more preset pressure values of the device (55) based on the monitored pipeline pressure, wherein one or more preset pressure values of the device are selected from the group consisting of the discharge pressure of the pump (160) for liquid oxygen, the discharge pressure of the air booster; compressor (30), discharge pressure of the main air compressor (10) and combinations thereof. 14. Устройство по п. 13, отличающееся тем, что первое давление PP1 продукта регулируют так, чтобы разность между первым давлением PP1 продукта и первым давлением PD1 доставки находилась ниже данного порогового значения, при этом данное пороговое значение составляет предпочтительно менее 5 фунтов на квадратный дюйм, более предпочтительно менее 3 фунтов на квадратный дюйм.14. The apparatus of claim 13, wherein the first product pressure P P1 is controlled such that the difference between the first product pressure P P1 and the first delivery pressure P D1 is below a given threshold, the threshold being preferably less than 5 pounds per square inch, more preferably less than 3 psi.
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