-
公开(公告)号：US20230339831A1
公开(公告)日：2023-10-26
申请号：US17920201
申请日：2021-04-09
发明人： Timm SCHUHMANN , Thomas WURZEL , Bryce WILLIAMS , Veronika GRONEMANN , Tobias OELMANN , Stéphane HAAG , Nga Thi Quynh DO
IPC分类号： C07C31/04 , C07C29/153 , C07C29/151
CPC分类号： C07C31/04 , C07C29/153 , C07C29/1518
摘要： The invention relates to a process for preparing methanol, in which a synthesis gas comprising carbon oxides and hydrogen is provided, which is passed at elevated pressure and elevated temperature through a catalyst bed of a methanol synthesis catalyst for conversion of the synthesis gas to methanol to obtain a product stream comprising crude methanol and unreacted synthesis gas. Unreacted synthesis gas is recycled to the catalyst bed inlet and combined with the synthesis gas, resulting in a mixed synthesis gas. The mixed synthesis gas at the catalyst bed inlet has a stoichiometry number SN of ≥0.80, the catalyst bed in the conversion of the mixed synthesis gas to methanol has a maximum catalyst bed temperature of ≤280° C., and the mixed synthesis gas at the catalyst bed inlet has a carbon monoxide concentration of ≤20% by volume.
-
公开(公告)号：US20230043425A1
公开(公告)日：2023-02-09
申请号：US17881889
申请日：2022-08-05
发明人： Nga Thi Quynh DO , Moein MIGHANI , Yann CHOUDAR
摘要： A method for obtaining a product by electrolysis, including: a) determining a set point for a production output by minimizing a first mathematical function, which depends on the production output and on a predicted product demand; b) determining respective set points for multiple process parameters by minimizing a second mathematical function, which depends on the set point for the production output determined in a), on the process parameters and on predicted degradation effects; c) determining respective set points for changes of multiple control parameters by minimizing a third mathematical function, which depends on the set points for the process parameters determined in b) and on the changes of the control parameters; and d) obtaining the product by performing the electrolysis using the set points for the changes of the control parameters determined in c).
-
3.发明公开公开(公告)号：US20240262770A1
公开(公告)日：2024-08-08
申请号：US18435360
申请日：2024-02-07
IPC分类号： C07C29/151 , C07C29/76
CPC分类号： C07C29/1512 , C07C29/76
摘要： The invention relates to a process for producing methanol in which at least a portion of the obtained liquid raw methanol stream is decompressed to a decompression pressure in a liquid decompression apparatus, wherein the decompression pressure is lower than the synthesis pressure and wherein the liquid decompression apparatus does mechanical work. At least a portion of the mechanical work done by the liquid decompression apparatus is utilized to drive the synthesis gas compression apparatus required for compressing the synthesis gas to synthesis pressure. The utilization may be carried out indirectly, through generation of electrical energy, or directly through direct utilization of the mechanical work.
-
公开(公告)号：US20230220567A1
公开(公告)日：2023-07-13
申请号：US18124226
申请日：2023-03-21
发明人： Nga Thi Quynh DO
摘要： A method for performing an electrolysis using an electrolysis stack having multiple electrolysis cells, wherein each of the electrolysis cells has: an anode space with an anode, a cathode space with a cathode, a membrane that separates the anode space and the cathode space from each other, and a recombination catalyst. The method includes feeding an electrolysis medium to the electrolysis stack and determining a flow rate at which the electrolysis medium is fed to the electrolysis stack, providing electrical energy to the electrolysis stack for performing the electrolysis with the electrolysis medium fed to the electrolysis stack, and determining a degree of degradation of the membranes based on the determined flow rate of the electrolysis medium.
-
-
-
搜索结果
4 条记录 (耗时 0.018 秒)
