公开(公告)号：EP4428096A1

公开(公告)日：2024-09-11

申请号：EP23160906.6

申请日：2023-03-09

申请人： L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

发明人： Schmid-McGuinness, Teja ,  Shrivastava, Swatantra Kumar ,  David, Marion ,  Raulli, Elena ,  Judas, Frederic

IPC分类号： C01B3/38 ,  C01B3/48

CPC分类号： C01B3/48 ,  C01B2203/023320130101 ,  C01B2203/04120130101 ,  C01B2203/041520130101 ,  C01B2203/04320130101 ,  C01B2203/04720130101 ,  C01B2203/047520130101 ,  C01B2203/049520130101 ,  C01B2203/082720130101 ,  C01B2203/08520130101 ,  C01B2203/086620130101 ,  C01B2203/12720130101 ,  C01B2203/14720130101 ,  C01B2203/14820130101 ,  C01B3/384 ,  C01B2203/14220130101

摘要： The invention relates to a process for producing hydrogen, comprising a steam methane reforming (SMR) step for producing synthesis gas, in which heat for the endothermic reaction is at least partially provided by converting electrical energy into heat. The synthesis gas is subject to a water-gas shift step and the shift product is subject to a chemical scrubbing step, to afford a carbon dioxide product stream and a hydrogen raw product stream. The hydrogen raw product stream is further purified by means of a hydrogen production step, which affords pure hydrogen and an off-gas stream. The off-gas stream, rich in carbon monoxide and methane, is recycled to the hydrocarbon containing feedstock stream, so that a combined stream of hydrocarbon containing feedstock, off-gas and steam is supplied to the steam methane reforming (SMR) step.