公开(公告)号：US20210269380A1

公开(公告)日：2021-09-02

申请号：US17261235

申请日：2019-07-11

Applicant: HALDOR TOPSØE A/S

Inventor： Emil Andreas TJÄRNEHOV ,  Per Juul DAHL

IPC: C07C29/152 ,  C07C29/151

Abstract: A method for producing methanol comprises the steps of passing a feed stream of methanol synthesis pas through a main methanol reactor containing a methanol synthesis catalyst, to form a mixed gas containing methanol, cooling the mixed gas containing methanol, separating methanol from the mixed pas and heating the mixed gas. The stream of heated mixed gas is passed through an additional methanol reactor containing a methanol synthesis catalyst, and the effluent from the additional methanol reactor is mixed with the feed stream of methanol synthesis gas and passed through the main methanol reactor.

公开(公告)号：US20210221758A1

公开(公告)日：2021-07-22

申请号：US17055399

申请日：2019-06-11

Applicant: HALDOR TOPSØE A/S

Inventor： Søren Grønborg ESKESEN ,  Per Juul DAHL ,  Emil Andreas TJÄRNEHOV ,  Max THORHAUGE

IPC: C07C29/154 ,  B01J21/04 ,  B01J23/80 ,  B01J19/18

Abstract: The deterioration of methanol synthesis catalysts that is caused by iron poisoning of the catalyst is counteracted by using a catalyst containing a maximum of 100 ppmw Fe in the synthesis process. The method is especially useful in a methanol synthesis plant comprising a make-up gas compressor and a synthesis reactor in a methanol loop with a once-through pre-converter installed between the make-up gas compressor and the methanol loop.

公开(公告)号：US20210188747A1

公开(公告)日：2021-06-24

申请号：US17055284

申请日：2019-06-11

Applicant: HALDOR TOPSØE A/S

Inventor： Søren Grønborg ESKESEN ,  Per Juul DAHL ,  Emil Andreas TJÄRNEHOV ,  Max THORHAUGE

IPC: C07C29/154 ,  B01J23/80 ,  B01J19/00 ,  C07C29/152

Abstract: A process for the production of methanol from synthesis gas via an equilibrium reaction is conducted in a methanol preconverter within a certain operational window, said operational window being defined by the area below an approximately linear curve of the partial pressure of carbon monoxide vs. the boiling water temperature for water temperatures between 210 and 270° C. Methanol of different product grades may be obtained by operating in specific areas of the operational window.