The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2019
Filed:
Jun. 13, 2017
Dow Global Technologies Llc, Midland, MI (US);
Steven L. F. Corthals, Wachtebeke, BE;
Thomas Davidian, Ghent, BE;
Gerolamo Budroni, Terneuzen, NL;
Peter E. Groenendijk, Hulst, NL;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The present invention provides methods for making propanal in a reaction comprising the oxidative coupling of methane (OCM) and oxygen as a reactant stream in a gas phase reaction, preferably in the presence of water or steam, to form ethylene, ethane, carbon dioxide (CO), water and syngas (CO and H) in a first reactor as an ethylene stream, and then forming propanal in a second reactor by feeding to the second reactor the ethylene stream with the syngas from the first reactor in the gas phase and hydroformylating in the presence of a catalyst for a water shift reaction. In the method, the ratio of Hto CO in the syngas is maintained by either co-feeding steam into the first reactor or the second reactor to generate additional Hin the syngas, or by forming CO in the second reactor from the water shift reaction by feeding the COfrom the ethylene stream into the second reactor.