Gas production system
US-11346603-B2 · May 31, 2022 · US
Method for reheating an atmospheric vaporizer using a gas originating from a cryogenic air separation unit
US11092292B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11092292-B2 |
| Application number | US-202016797764-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 21, 2020 |
| Priority date | Jan 5, 2017 |
| Publication date | Aug 17, 2021 |
| Grant date | Aug 17, 2021 |
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Abstract
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In a method for reheating an atmospheric vaporizer, a cryogenic liquid is vaporized by heat exchange with ambient air in the atmospheric vaporizer and to reheat the vaporizer, a gas is sent thereto at a temperature of at least 0° C., this gas originating from a cryogenic distillation air separation unit.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for reheating, even de-icing, an atmospheric vaporizer in which: i) in a normal operation, vaporizing a cryogenic liquid originating from a source by heat exchange with ambient air in the atmospheric vaporizer, wherein the cryogenic liquid has a main component of oxygen, nitrogen or argon; and ii) in a reheating phase, no longer sending the cryogenic liquid from the source to the atmospheric vaporizer but, instead, sending a gas to the atmospheric vaporizer at a temperature of at least 0° C., wherein said gas originates from a cryogenic distillation air separation unit, wherein the gas sent to the atmospheric vaporizer in the reheating phase is a stream of air purified of water and of carbon dioxide taken from the air supply of the cryogenic distillation air separation unit. 2. The method according to claim 1 , in which the source of the cryogenic liquid is the cryogenic distillation air separation unit. 3. The method according to claim 1 , in which the main component of the cryogenic liquid is oxygen. 4. The method according to claim 1 , in which the gas sent to the atmospheric vaporizer in reheating phase is at a temperature of at least 20° C. 5. The method according to claim 1 , in which the gas sent to the atmospheric vaporizer in reheating phase is at a temperature of at least 50° C. 6. The method according to claim 1 , in which the gas sent to the atmospheric vaporizer in the reheating phase provides sufficient heat to de-ice the atmospheric vaporizer. 7. The method according to claim 1 , in which, during the reheating phase, the atmospheric temperature is not greater than 0° C. 8. The method according to claim 1 , further comprising an absence of using electrical means to heat the atmospheric vaporizer in the reheating phase.
Assignees
Inventors
Classifications
- F25J3/04824Primary
Stopping of the process, e.g. defrosting or deriming; Back-up procedures · CPC title
- F25J5/00Primary
Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants (heat exchangers F28C, F28D, F28F) · CPC title
using a vaporiser · CPC title
the recycled stream being air · CPC title
Air heating · CPC title
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- What does patent US11092292B2 cover?
- In a method for reheating an atmospheric vaporizer, a cryogenic liquid is vaporized by heat exchange with ambient air in the atmospheric vaporizer and to reheat the vaporizer, a gas is sent thereto at a temperature of at least 0° C., this gas originating from a cryogenic distillation air separation unit.
- Who is the assignee on this patent?
- Air Liquide
- What technology area does this patent fall under?
- Primary CPC classification F25J3/04824. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 17 2021 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).