Method and unit for removing carbon monoxide from a gas flow comprising CO2 and recovering energy from a flow leaving said unit

US9739485B2 · kind B2 · utility

Assignee

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

Inventors

• Nicolas Chambron · Saint-Maur-des-Fossés, FR
• Arthur Darde · Paris, FR
• Richard Dubettier-Grenier · Chennevières-sur-Marne, FR
• Mathieu LECLERC · Paris, FR

Key dates

• Filing date: Sep 25, 2013
• Grant date: Aug 22, 2017
• Expiry date: Oct 12, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23J2219/70
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a unit for the purification of a gas flow comprising CO and at least 45% CO2 and a method of operating said unit. In one embodiment, said unit contains a first compressor, a heat exchanger configured to cool the compressed gas flow, a separation chamber configured to separate head gas produced in the heat exchanger, a heater disposed on the line of the head gas originating from the separation chamber, a catalytic oxidation unit for oxidizing the compressed CO in the gas flow originating from the heater, and turbines placed downstream of the catalytic oxidation unit.