Patent ID: 9217113
Filing Date: 2015-12-22
Classification: C07C,C10G,C10L,Y02P

Abstract:
1. A process of co-producing biofuels and glycols comprising: (i) providing a bio-based feedstock stream containing carbohydrates and water; (ii) contacting, in a first reaction system, the bio-based feedstock stream with an aqueous phase reforming catalyst at a temperature in the range of 120° C. to 280° C. and 0.1 to 150 bar of hydrogen to form a first intermediate stream containing plurality of oxygenated intermediates comprising at least 5 wt %, based on the total oxygenates content, of glycols that comprises ethylene glycol (EG) and 1,2-propylene glycol (PG), and other monooxygenates; (iii) contacting, in a second reaction system, at least a first portion of said first intermediate stream in the presence of a aqueous phase reforming catalyst at a temperature in the range of 160° C. to 280° C. to produce a second intermediate stream containing plurality of oxygenated intermediates; (iv) processing at least a portion of the second intermediate stream to form a liquid fuel; (v) providing a second portion of said first intermediate stream to a first separation system; (vi) separating a portion of said first intermediate stream, in the first separation system, to a monooxygenates stream comprising monooxygenates and a glycol rich stream comprising at least 10 wt %, based on the total oxygenates, of glycols by flashing; (vii) separating from the glycol rich stream glycols and remaining oxygenates stream; (viii) contacting, in a third reaction system, at least a portion of said remaining oxygenates stream in the presence of a aqueous phase reforming catalyst at a temperature in the range of 160° C. to 280° C. to produce a recycle oxygenates stream and hydrogen; (ix) providing at least a portion of said recycle oxygenates stream and a portion of said hydrogen to the first reaction system; and (x) recovering glycols.