Patent · US Active

Method and appliance for separating a mixture containing carbon dioxide by cryogenic distillation

US9851142B2 · kind B2 · utility

0Cited by

3References

5Claims

0Family size

Assignee

L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

Arthur Darde · Paris, FR
Mathieu LECLERC · Paris, FR

Key dates

Filing date	Sep 24, 2013
Grant date	Dec 26, 2017
Priority date	—
Expiry date	Sep 24, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In a method for separating at least one lighter impurity of a gaseous mixture containing at least 30% mol of carbon dioxide, a liquid (101) enriched with carbon dioxide is drawn off into a vat of a distillation column (25), at least part (27) of the liquid enriched with carbon dioxide is vaporized and then heated to a first temperature higher than the boiling temperature thereof in the exchanger and leaves the exchanger at the hot end thereof, and at least part of the vaporized and heated liquid is sent from the hot end of the exchanger at the first temperature, without being cooled in the exchanger and without having been compressed, to the lower part of the distillation column, where it participates in the distillation while enriching itself.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.