METHOD AND APPARATUS FOR RECOVERING AND CLEANING NITROUS OXIDE INCLUDED IN WASTE GAS

• Main Authors: CHEVALIER GILBERT, URNER PHILIPPE
• Format: Patent
• Language: English
• Published: 05.09.2000
• Edition: 7
• Subjects: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS THEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

PROBLEM TO BE SOLVED: To recover nitrous oxide included in a waste gas or an off gas by an effective method, and, if possible, to recycle it or enable it to be economically utilized. SOLUTION: This method for recovering and/or cleaning at least a part of nitrous oxide included in a waste gas flow containing the nitrous oxide and at least one other gaseous compound comprises (a) separating at least a part of the nitrous oxide included in the waste gas flow by permeation, and (b) recovering at least a part of the gaseous nitrous oxide separated in the step (a).