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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 3. Отображено 3.
15-02-2018 дата публикации

REACTOR EFFLUENT WASH TO REMOVE AROMATICS

Номер: US20180043280A1
Автор: BANACH Mike, Myers David N., Nedohin Gregory J.
Принадлежит:

A process is presented for the removal or aromatics from a hydrocarbon stream. The hydrocarbon stream is generated by a dehydrogenation process that generates aromatics. The process includes a two contact cooler system with the first and second contact coolers using different coolants. The second coolant is a non-aromatic hydrocarbon coolant that will absorb aromatics. 1. A process for removing aromatics from a process stream , comprising:passing the process stream comprising paraffins, olefins and trace aromatics to a first contact cooler using a first coolant to generate a first stream;passing the first stream to a compressor to generate a second stream; andpassing the compressed stream to a second contact cooler using a second coolant to generate a third stream comprising olefins and paraffins.2. The process of further comprising:passing a hydrocarbon stream comprising paraffins to a dehydrogenation reactor to generate the process stream comprising olefins and paraffins.3. The process of further comprising passing the third stream to a cryogenic separation unit to generate an olefin and paraffin product stream.4. The process of wherein the first coolant comprises an aromatic solvent as a coolant.5. The process of wherein the second coolant comprises a paraffinic solvent or an alkylate solvent.6. The process of wherein the first stream is cooled to a temperature between 10° C. and 45° C.7. The process of wherein the first stream is compressed to a pressure between 250 kPa and 600 kPa.8. The process of wherein the first stream has a reduced aromatics content.9. The process of wherein the first stream has an aromatics content below 1500 ppmw.10. The process of wherein the third stream has an aromatics content below 100 ppmw.11. The process of wherein the third stream is cooled to a temperature between 10° C. and 45° C.12. A process for the production of olefins from paraffins claim 1 , comprising:passing a hydrocarbon stream comprising paraffins to a dehydrogenation ...

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Номер записи: 1
02-05-2019 дата публикации

DEHYDROGENATION PROCESS

Номер: US20190127298A1
Автор: Nedohin Gregory J., Sadler Clayton C., Serban Manuela, Vetter Michael J.
Принадлежит:

Large pill dehydrogenation catalysts and large screens slot width are combined in dehydrogenation units to reduce the pressure drop across the catalyst bed and reactor screens compared to conventional screen and catalyst size combinations. The catalyst has an average pill diameter in the range of 1.6 mm to 3.0 mm, and the slot width of the screen is in the range of about 30% to about 60% of the pill diameter. 1. A process for dehydrogenation of a hydrocarbon feed comprising:providing a hydrocarbon feed stream comprising at least one paraffin to a dehydrogenation reactor, the reactor comprising a shell containing at least one screen;contacting the feed stream with a catalyst in the reactor under dehydrogenation conditions, the catalyst having an average pill diameter in a range of 1.6 mm to 3.0 mm, and wherein a screen slot width of the at least one screen is in a range of about 30% to about 60% of the pill diameter; andremoving an effluent stream comprising at least one olefin from the reactor.2. The process of wherein the slot width is in the range of about 30% to about 40% of the average pill diameter.3. The process of wherein the screen slot width is in the range of about 40% to about 50% of the average pill diameter.4. The process of wherein the relative screen delta pressure drop in the screen slot width range is decreased by about 35-55% compared to a process having screen slot width in the range of about 30% to about 40% of the average pill diameter.5. The process of wherein the screen slot width is in the range of about 50% to about 60% of the average pill diameter.6. The process of wherein the relative screen delta pressure drop in the screen slot width range is decreased by about 50 to 65% compared to a process having screen slot width in the range of about 30% to about 40% of the average pill diameter.7. The process of wherein the relative delta pressure in the catalyst bed is decreased by at least 15% compared to a process using a catalyst having an ...

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Номер записи: 2
12-09-2018 дата публикации

Reactor effluent wash to remove aromatics

Номер: EP3371134A1
Автор: David N. Myers, Gregory J. Nedohin, Mike Banach
Принадлежит: UOP LLC

A process is presented for the removal or aromatics from a hydrocarbon stream. The hydrocarbon stream is generated by a dehydrogenation process that generates aromatics. The process includes a two contact cooler system with the first and second contact coolers using different coolants. The second coolant is a non-aromatic hydrocarbon coolant that will absorb aromatics.

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Номер записи: 3