公开(公告)号：US20240208888A1

公开(公告)日：2024-06-27

申请号：US18288310

申请日：2022-04-26

申请人： L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude

发明人： Veronika GRONEMANN ,  Michael WILKEN ,  Tobias OELMANN

IPC分类号： C07C29/151 ,  C01B3/32

CPC分类号： C07C29/1518 ,  C01B3/32 ,  C01B2203/061 ,  C01B2210/001 ,  C01B2210/0014

摘要： The invention relates to a process and to a plant for producing methanol from a synthesis gas having a hydrogen deficit. A fresh gas stream from a reformer unit which includes hydrogen and carbon oxides is combined with a hydrogen-containing stream from a hydrogen recovery stage. This affords a synthesis gas stream having a stoichiometry number SN, defined as SN=[n(H2)−n(CO2)]/[n(CO)+n(CO2)], of less than 2.0. The synthesis gas stream is combined with a residual gas stream and the synthesis gas stream and the residual gas stream are passed through a bed of a methanol synthesis catalyst at elevated pressure and elevated temperature to obtain a product stream having methanol and the residual gas stream, and the product stream is cooled to separate methanol from the residual gas stream.

公开(公告)号：US20210188632A1

公开(公告)日：2021-06-24

申请号：US17125540

申请日：2020-12-17

申请人： L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude

发明人： Chin Han LIM ,  Hans KOPETSCH ,  Veronika GRONEMANN

IPC分类号： C01B3/34 ,  B01J19/00

摘要： The invention relates to a process for the start-up of an autothermal reformer, wherein syngas is produced in the autothermal reformer during start-up through steam reforming. To facilitate autoignition in the autothermal reformer reactor of the autothermal reformer, the reformed syngas is recycled to an upstream section of the autothermal reformer reactor and is mixed with process steam and a hydrocarbon containing process stream. As soon as a minimum hydrogen threshold concentration at the upstream section of the autothermal reformer reactor is reached in the mixed process stream, oxygen is added to the burner of the ATR reactor to obtain autoignition of the mixed process stream. Due to the process of the invention, an external hydrogen source for facilitating autoignition of the mixed stream can be omitted. The invention further relates to a plant configured to carry out the process of the invention.