Patent · US Active

Purification and liquefaction of biogas by combination of a crystallization system with a liquefaction exchanger

US11066347B2 · kind B2 · utility

0Cited by

0References

17Claims

0Family size

Assignee

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

Inventors

Antonio Trueba · Paris, FR
Jorge Ernesto Tovar Ramos · Cachan, FR
Frederic Crayssac · Meudon, FR
Solene Valentin · Meudon, FR
Marine ANDRICH · La Porte des Loges, FR

Key dates

Filing date	Apr 3, 2020
Grant date	Jul 20, 2021
Priority date	—
Expiry date	Apr 3, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E50/30
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Plant and process for the production of liquid methane from a feed gas stream comprising at least methane and carbon dioxide. A feed gas stream is injected into a CO2 crystallizer in countercurrent fashion against a stream of predominantly liquid methane, thereby crystallizing amounts of carbon dioxide from the feed gas stream. Gaseous methane recovered from the CO2 crystallizer is liquefied at a liquefaction exchanger.

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