RU2007136601A - Способ одновременного получения чистых фракций гелия и азота - Google Patents

Способ одновременного получения чистых фракций гелия и азота Download PDF

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RU2007136601A
RU2007136601A RU2007136601/06A RU2007136601A RU2007136601A RU 2007136601 A RU2007136601 A RU 2007136601A RU 2007136601/06 A RU2007136601/06 A RU 2007136601/06A RU 2007136601 A RU2007136601 A RU 2007136601A RU 2007136601 A RU2007136601 A RU 2007136601A
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fraction
nitrogen
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Ханс ШМИДТ (DE)
Ханс ШМИДТ
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Линде Акциенгезельшафт (De)
Линде Акциенгезельшафт
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    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/42—Nitrogen or special cases, e.g. multiple or low purity N2
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    • F25J2270/88—Quasi-closed internal refrigeration or heat pump cycle, if not otherwise provided

Abstract

1. Способ одновременного получения чистых фракций гелия и азота из содержащего по меньшей мере метан, азот и гелий исходного потока, заключающийся в том, что исходный поток (1, 2) подвергают парциальной конденсации (Е) и разделяют (D) на богатую гелием газовую фракцию (3) и богатую азотом и метаном жидкую фракцию (5), богатую гелием газовую фракцию (3, 4) подают в ступень (R) очистки, в которой путем адсорбции, мембранного разделения и/или ректификации получают чистую фракцию (4') гелия, и по меньшей мере один отдельный поток (9) богатой азотом и метаном жидкой фракции (5) подают на стадию ректификационного (Т) получения из нее чистой фракции азота. ! 2. Способ по п.1, отличающийся тем, что по меньшей мере один отдельный поток (6) богатой азотом и метаном жидкой фракции (5) расширяют (а), нагревают за счет теплообмена с конденсируемым исходным потоком (1) и испаряют и после повторного сжатия примешивают к исходному потоку (1) перед его конденсацией (Е). ! 3. Способ по п.1, отличающийся тем, что по меньшей мере один отдельный поток (14) богатой азотом и метаном жидкой фракции (5) расширяют (d), нагревают (Е) и подают (15) на стадию ректификационного (Т) получения чистой фракции азота. ! 4. Способ по п.1, отличающийся тем, что исходный поток (1) перед его парциальной конденсацией (Е) подвергают одно- или многоступенчатому сжатию. ! 5. Способ по п.3, отличающийся тем, что полученную на стадии ректификационного (Т) получения чистой фракции азота газовую фракцию (16) подают (17, 6, 7) на предусмотренное перед парциальной конденсацией (Е) одно- или многоступенчатое сжатие. ! 6. Способ по п.3, отличающийся тем, что чистую фракцию азота (18, 20), полученную на стадии ее ректификацион�

Claims (8)

1. Способ одновременного получения чистых фракций гелия и азота из содержащего по меньшей мере метан, азот и гелий исходного потока, заключающийся в том, что исходный поток (1, 2) подвергают парциальной конденсации (Е) и разделяют (D) на богатую гелием газовую фракцию (3) и богатую азотом и метаном жидкую фракцию (5), богатую гелием газовую фракцию (3, 4) подают в ступень (R) очистки, в которой путем адсорбции, мембранного разделения и/или ректификации получают чистую фракцию (4') гелия, и по меньшей мере один отдельный поток (9) богатой азотом и метаном жидкой фракции (5) подают на стадию ректификационного (Т) получения из нее чистой фракции азота.
2. Способ по п.1, отличающийся тем, что по меньшей мере один отдельный поток (6) богатой азотом и метаном жидкой фракции (5) расширяют (а), нагревают за счет теплообмена с конденсируемым исходным потоком (1) и испаряют и после повторного сжатия примешивают к исходному потоку (1) перед его конденсацией (Е).
3. Способ по п.1, отличающийся тем, что по меньшей мере один отдельный поток (14) богатой азотом и метаном жидкой фракции (5) расширяют (d), нагревают (Е) и подают (15) на стадию ректификационного (Т) получения чистой фракции азота.
4. Способ по п.1, отличающийся тем, что исходный поток (1) перед его парциальной конденсацией (Е) подвергают одно- или многоступенчатому сжатию.
5. Способ по п.3, отличающийся тем, что полученную на стадии ректификационного (Т) получения чистой фракции азота газовую фракцию (16) подают (17, 6, 7) на предусмотренное перед парциальной конденсацией (Е) одно- или многоступенчатое сжатие.
6. Способ по п.3, отличающийся тем, что чистую фракцию азота (18, 20), полученную на стадии ее ректификационного (Т) получения, переохлаждают (Е').
7. Способ по п.6, отличающийся тем, что технологический поток (22), используемый для переохлаждения (Е') чистой фракции (18, 20) азота, полученной на стадии ее ректификационного (Т) получения и предпочтительно представляющий собой отдельный поток полученной чистой фракции (18, 20) азота, расширяют, нагревают за счет теплообмена с переохлаждаемым технологическим потоком (20) и подают (23, 17, 6, 7) на предусмотренное перед парциальной конденсацией (Е) одно- или многоступенчатое сжатие.
8. Способ по одному из пп.1-7, отличающийся тем, что для теплообмена между всеми нагреваемыми и охлаждаемыми технологическими потоками (1, 3, 6, 14, 12, 25) используют один теплообменник предпочтительно пластинчатого типа.
RU2007136601/06A 2005-03-04 2006-02-28 Способ одновременного получения чистых фракций гелия и азота RU2007136601A (ru)

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DE102005010054A DE102005010054A1 (de) 2005-03-04 2005-03-04 Verfahren zum gleichzeitigen Gewinnen einer Helium- und einer Stickstoff-Reinfraktion
DE102005010054.6 2005-03-04

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AU (1) AU2006220067A1 (ru)
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