C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 7/00 (2006.01) B01J 3/00 (2006.01) C07C 9/04 (2006.01) F16J 12/00 (2006.01) F25J 3/08 (2006.01)
Patent
CA 2619776
The invention is directed to processes and apparatuses for gas treatment, in particular for the purification of methane rich gas streams, such as gas obtained from the conversion from organic matter ("biogas"). In accordance with the present invention there is provided an apparatus and a process for producing a purified methane comprising gas stream (P) from a methane containing gas stream (A), comprising the steps of: (a) pressurising said methane containing gas stream (A) and subsequently cooling it, whereby a stream comprising condensed contaminants (C) and a methane comprising stream (B) are obtained; (b) optionally feeding said methane comprising stream (B) to an adsorption unit and/or a catalytic conversion unit, whereby the concentration of contaminants in stream (B) is further decreased; and (c) cooling the methane comprising stream (B) to a temperature which is sufficient to condensate CO2 from said stream (B), whereby said purified methane comprising gas stream (P) is obtained.
L'invention concerne des procédés et des appareils pour le traitement de gaz, en particulier pour la purification de flux gazeux riches en méthane, tels qu'un gaz obtenu à partir de la conversion de matière organique ("biogaz"). L'invention concerne un appareil et un procédé servant à produire un flux gazeux comprenant du méthane purifié (P) à partir d'un flux gazeux contenant du méthane (A), comprenant les étapes consistant à : (a) pressuriser ledit flux gazeux contenant du méthane (A) et à la suite de cela le refroidir, ce par quoi on obtient un flux comprenant des contaminants condensés (C) et un flux comprenant du méthane (B) ; (b) facultativement introduire ledit flux comprenant du méthane (B) dans une unité d'adsorption et/ou une unité de conversion catalytique, ce par quoi on diminue encore la concentration des contaminants dans le flux (B) ; et (c) refroidir le flux comprenant du méthane (B) à une température qui est suffisante pour condenser le CO2 dans ledit flux (B), ce par quoi on obtient un flux gazeux comprenant du méthane purifié (P).
de Bas Mathieu Andre
de Pater Jeroen
Kuiper Jacob
Borden Ladner Gervais Llp
Gastreatment Services B.v.
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