EP 2167617 A1 20100331 - PROCESS TO PRODUCE A METHANE RICH GAS MIXTURE FROM GASIFICATION DERIVED SULPHUR CONTAINING SYNTHESIS GASES
Title (en)
PROCESS TO PRODUCE A METHANE RICH GAS MIXTURE FROM GASIFICATION DERIVED SULPHUR CONTAINING SYNTHESIS GASES
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES METHANREICHEN GASGEMISCHS AUS DURCH VERGASUNG GEWONNENEN SCHWEFELHALTIGEN SYNTHESEGASEN
Title (fr)
PROCÉDÉ DESTINÉ À PRODUIRE UN MÉLANGE GAZEUX RICHE EN MÉTHANE À PARTIR DE GAZ DE SYNTHÈSE CONTENANT DU SOUFRE PROVENANT D'UNE GAZÉIFICATION
Publication
Application
Priority
- EP 2008005464 W 20080703
- EP 07013482 A 20070710
- EP 08773866 A 20080703
Abstract (en)
[origin: WO2009007061A1] The present invention discloses a method for converting a raw gas into a methane-rich and/or hydrogen-rich gas, comprising the steps of : a) providing the raw gas stemming from a coal and/or biomass gasification process, thereby the raw gas comprising beside a methane and hydrogen content carbon-monoxide, carbon-dioxide, alkanes, alkenes, alkynes, tar, especially benzole and naphthalene, COS, hydrogen sulfide and organic sulfur compounds, especially thiophenes; thereby the ratio of hydrogen to carbon monoxide ranges form 0.3 to 4; b) bringing this raw gas into contact with a catalyst arranged as a fluidized bed reactor at temperatures above 200°C and at pressures equal or larger than 1 bar in order to convert the raw gas into a first product gas, thereby simultaneously convert organic sulfur components into hydrogen sulfide, reform tars, generate water/gas shift reaction and generate methane from the hydrogen/carbonmonoxide content; c) bringing the first product gas into a sulfur absorption process to generate a second product gas, thereby reducing the content of hydrogen sulfur and COS from 100 to 1000 ppm down to 1000 ppb or less; d) optionally bringing the second product gas into a carbon dioxide removal process to generate a third product gas at least almost free of carbon dioxide; e) bringing the third product gas into a 2nd methanation process to generate a forth product gas having a methane content above 5 vol%; f) ) optionally bringing the fourth product gas into a carbon dioxide removal process to generate a fifth product gas at least almost free of carbon dioxide g) bringing the fifth product gas into an hydrogen separation process in order to separate a hydrogen rich gas from a remaining methane-rich gas, called substitute natural gas.
IPC 8 full level
C10L 3/10 (2006.01)
CPC (source: EP US)
C10G 2/30 (2013.01 - EP US); C10G 2/33 (2013.01 - EP US); C10G 45/00 (2013.01 - EP US); C10G 45/04 (2013.01 - EP US); C10G 45/34 (2013.01 - EP US); C10G 47/00 (2013.01 - EP US); C10G 47/02 (2013.01 - EP US); C10G 67/02 (2013.01 - EP US); C10G 67/06 (2013.01 - EP US); C10G 67/14 (2013.01 - EP US); C10J 3/00 (2013.01 - EP US); C10L 3/08 (2013.01 - EP US); C10L 3/102 (2013.01 - EP US); C10J 2300/1665 (2013.01 - EP US); C10J 2300/1807 (2013.01 - EP US)
Citation (search report)
See references of WO 2009007061A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009007061 A1 20090115; CA 2693459 A1 20090115; CN 101802146 A 20100811; EP 2167617 A1 20100331; US 2010205863 A1 20100819
DOCDB simple family (application)
EP 2008005464 W 20080703; CA 2693459 A 20080703; CN 200880106240 A 20080703; EP 08773866 A 20080703; US 66857708 A 20080703