EP 4225471 A1 20230816 - METHOD FOR CLEANING A GAS MIXTURE BY ADDING OZONE
Title (en)
METHOD FOR CLEANING A GAS MIXTURE BY ADDING OZONE
Title (de)
VERFAHREN ZUR REINIGUNG EINES GASGEMISCHES DURCH OZONZUGABE
Title (fr)
PROCÉDÉ DE NETTOYAGE D'UN MÉLANGE GAZEUX PAR AJOUT D'OZONE
Publication
Application
Priority
- EP 20201345 A 20201012
- EP 2021078144 W 20211012
Abstract (en)
[origin: WO2022079004A1] The invention describes methods for cleaning a gas mixture. In a first step a) a gas mixture is provided, the gas mixture comprising a gas selected from the group consisting of a methane-containing biogas (3, 7) which is obtained by fermentation of organic material and which has a methane concentration of at least 40 vol.% and a pyrolysis gas which is obtained by thermal treatment of organic material and which has a carbon monoxide concentration of at least 2 vol.% or a combination thereof. The gas mixture also comprises an impurity from the group of volatile organic compounds (VOC), the gas mixture having a VOC concentration of 0.0001 to 0.2 vol.%. In a second step b), 0.0001 to 12 vol.% ozone is added to the gas mixture, which ozone oxidizes at least part of the VOC in the gas mixture. In a third step d), the gas mixture from the second step is brought into contact with a VOC-adsorbing adsorber selected from the group consisting of activated carbon, activated coke, silica gel, aluminum oxide, molecular sieve and mixtures thereof, in order to clean the gas mixture.
IPC 8 full level
B01D 53/04 (2006.01); B01D 53/72 (2006.01); B01D 53/76 (2006.01)
CPC (source: EP)
B01D 53/04 (2013.01); B01D 53/72 (2013.01); B01D 53/76 (2013.01); B01D 2251/104 (2013.01); B01D 2253/102 (2013.01); B01D 2256/24 (2013.01); B01D 2257/304 (2013.01); B01D 2257/502 (2013.01); B01D 2257/504 (2013.01); B01D 2257/708 (2013.01); Y02C 20/40 (2020.08); Y02E 50/30 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 3981498 A1 20220413; AU 2021359761 A1 20230413; EP 4225471 A1 20230816; JP 2023545148 A 20231026; WO 2022079004 A1 20220421
DOCDB simple family (application)
EP 20201345 A 20201012; AU 2021359761 A 20211012; EP 2021078144 W 20211012; EP 21790214 A 20211012; JP 2023521966 A 20211012