RU2011137411A - Способ сжижения потока с высоким содержанием углеводородов - Google Patents

Способ сжижения потока с высоким содержанием углеводородов Download PDF

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RU2011137411A
RU2011137411A RU2011137411/06A RU2011137411A RU2011137411A RU 2011137411 A RU2011137411 A RU 2011137411A RU 2011137411/06 A RU2011137411/06 A RU 2011137411/06A RU 2011137411 A RU2011137411 A RU 2011137411A RU 2011137411 A RU2011137411 A RU 2011137411A
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fraction
mixture
refrigerants
liquefied
high content
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RU2537480C2 (ru
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Хайнц БАУЭР
Райнер ЗАППЕР
Даниэль ГАРТЕ
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Линде Акциенгезелльшафт
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    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
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Abstract

1. Способ сжижения фракции с высоким содержанием углеводородов при одновременном удалении фракции с высоким содержанием C, при этом охлаждение и сжижение фракции с высоким содержанием углеводородов происходит при непрямом теплообмене посредством смеси хладагентов циркуляционного контура смеси хладагентов, в котором смесь хладагентов подвергают по меньшей мере двухступенчатому сжатию, и удаление фракции с высоким содержанием Cпроисходит на регулируемом уровне температуры, при этом смесь хладагентов разделяют на газообразную и жидкую фракцию, обе фракции переохлаждаются, расширяются, по существу, до давления всасывания первой ступени компрессора и по меньшей мере частично выпариваются, отличающийся тем, что по меньшей мере временно по меньшей мере один частичный поток (19, 24) сжиженной, прежде газообразной фракции смеси (15) хладагентов расширяется (j, h) и подмешивается к расширенной жидкой фракции смеси (21) хладагентов.2. Способ по п.1, отличающийся тем, что частичный поток (19, 24) сжиженной, прежде газообразной фракции смеси (15) хладагентов на холодном конце теплообменника (E3) между подлежащей сжижению фракцией (1, 2) с высоким содержанием углеводородов и смесью (15, 17, 18, 20, 20', 22) хладагентов и/или при надлежащей промежуточной температуре отводится, расширяется (j, h) и подмешивается к расширенной жидкой фракции смеси (21) хладагентов, при этом надлежащая промежуточная температура устанавливается тогда, когда смесь (15) хладагентов переохлаждена по меньшей мере на 5°C, предпочтительно на 10°C относительно состояния кипения.3. Способ по п.1 или 2, отличающийся тем, что теплообмен между подлежащей сжижению фракцией (1, 2) с высок�

Claims (6)

1. Способ сжижения фракции с высоким содержанием углеводородов при одновременном удалении фракции с высоким содержанием C2+, при этом охлаждение и сжижение фракции с высоким содержанием углеводородов происходит при непрямом теплообмене посредством смеси хладагентов циркуляционного контура смеси хладагентов, в котором смесь хладагентов подвергают по меньшей мере двухступенчатому сжатию, и удаление фракции с высоким содержанием C2+ происходит на регулируемом уровне температуры, при этом смесь хладагентов разделяют на газообразную и жидкую фракцию, обе фракции переохлаждаются, расширяются, по существу, до давления всасывания первой ступени компрессора и по меньшей мере частично выпариваются, отличающийся тем, что по меньшей мере временно по меньшей мере один частичный поток (19, 24) сжиженной, прежде газообразной фракции смеси (15) хладагентов расширяется (j, h) и подмешивается к расширенной жидкой фракции смеси (21) хладагентов.
2. Способ по п.1, отличающийся тем, что частичный поток (19, 24) сжиженной, прежде газообразной фракции смеси (15) хладагентов на холодном конце теплообменника (E3) между подлежащей сжижению фракцией (1, 2) с высоким содержанием углеводородов и смесью (15, 17, 18, 20, 20', 22) хладагентов и/или при надлежащей промежуточной температуре отводится, расширяется (j, h) и подмешивается к расширенной жидкой фракции смеси (21) хладагентов, при этом надлежащая промежуточная температура устанавливается тогда, когда смесь (15) хладагентов переохлаждена по меньшей мере на 5°C, предпочтительно на 10°C относительно состояния кипения.
3. Способ по п.1 или 2, отличающийся тем, что теплообмен между подлежащей сжижению фракцией (1, 2) с высоким содержанием углеводородов и смесью (15, 17, 18, 20, 20', 22) хладагентов осуществляется в многопоточном теплообменнике (E3), который предпочтительно выполнен в виде пластинчатого теплообменника или витого теплообменника.
4. Способ по п.1 или 2, при котором удаление фракции с высоким содержанием C2+ осуществляется по меньшей мере в одной разделительной колонне, отличающийся тем, что по меньшей мере временно частичный поток (5) подлежащей сжижению фракции с высоким содержанием углеводородов подается в головную область разделительной колонны (T).
5. Способ по п.1 или 2, при котором удаление фракции с высоким содержанием C2+ осуществляется по меньшей мере в одной разделительной колонне, отличающийся тем, что по меньшей мере временно частичный поток (5) подлежащей сжижению фракции с высоким содержанием углеводородов подается в нижнюю область разделительной колонны (T).
6. Способ по п.1 или 2, при котором удаление фракции с высоким содержанием C2+ осуществляется по меньшей мере в одной разделительной колонне, отличающийся тем, что посредством кипятильника (E4), которым снабжена разделительная колонна (T), устанавливается температура нижней части разделительной колонны.
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