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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
发明人： Schmid-McGuinness, Teja , Shrivastava, Swatantra Kumar , David, Marion , Raulli, Elena , Judas, Frederic
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.
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公开(公告)号：EP4428095A1
公开(公告)日：2024-09-11
申请号：EP23160885.2
申请日：2023-03-09
发明人： Schmid-McGuiness, Teja , Shrivastava, Swatantra Kumar , David, Marion , Raulli, Elena , Judas, Frederic
CPC分类号： C01B3/384 , C01B3/48 , C01B2203/023320130101 , C01B2203/04320130101 , C01B2203/047520130101 , C01B2203/049520130101 , C01B2203/082720130101 , C01B2203/08520130101 , C01B2203/086620130101 , C01B2203/12720130101 , C01B2203/14220130101 , C01B2203/14720130101 , C01B2203/040520130101 , C01B2203/04620130101 , C01B2203/14820130101
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 separated into a hydrogen product and a the tail gas. The latter is subject to a tail gas separation step, producing a hydrogen rich stream, a carbon dioxide product, and an off-gas stream rich in carbon monoxide and methane. The hydrogen rich stream is recycled to the shifted synthesis gas. According to the invention, off-gas obtained in the tail gas separation step 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.
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