Method for compressing an incoming feed air stream in a cryogenic air separation plant
US-10519962-B2 · Dec 31, 2019 · US
Method and device for producing air gases in a gaseous and liquid form with a high flexibility and by cryogenic distillation
US8997520B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8997520-B2 |
| Application number | US-53084008-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 26, 2008 |
| Priority date | Mar 13, 2007 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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Abstract
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A method of producing at least one air gas using cryogenic distillation is provided. The expanded streams coming from the two turbines are combined and then split into two fractions. The first fraction is sent to the medium-pressure column of the system in gaseous form, whereas the second fraction is returned to the cold end of the heat exchange line. At a temperature T 4 below −100° C. and above T 2 , the second fraction is sent to a turbine where it expands up to a temperature T 5 , forming an air stream. This air stream is then warmed in the heat exchange line before being discharged into the atmosphere, so that the distillation is not disturbed. A liquid product is withdrawn from the column system as final product. The sole liquid product from the apparatus is liquid oxygen, but of course other products may be produced.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of producing at least one air gas using cryogenic distillation in a system of columns comprising at least one medium-pressure column operating at a medium pressure and a low-pressure column operating at a low pressure, said at least one median pressure column and low-pressure column being thermally coupled to one another, wherein in a first operating mode and a second operating mode, the method comprises the steps of: a) pressurizing a compressed ai…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US8997520B2 cover?
- A method of producing at least one air gas using cryogenic distillation is provided. The expanded streams coming from the two turbines are combined and then split into two fractions. The first fraction is sent to the medium-pressure column of the system in gaseous form, whereas the second fraction is returned to the cold end of the heat exchange line. At a temperature T 4 below −100° C. and ab…
- Who is the assignee on this patent?
- Guillard Alain, Le Bot Patrick, Pontone Xavier, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F25J3/0429. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 07 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).