US 12,344,590 B2
Process for the recovery of solvent and isolation of humin materials and compositions thereof
Staffan Torssell, Bromma (SE); Marco Antonio Saucedo, Cambridge (GB); Christopher Paul Dunckley, San Jose, CA (US); and Kenneth P. Keckler, Naperville, IL (US)
Assigned to Stora Enso Oyj, Helsinki (FI)
Appl. No. 17/594,328
Filed by Stora Enso Oyj, Helsinki (FI)
PCT Filed Apr. 1, 2020, PCT No. PCT/US2020/026203
§ 371(c)(1), (2) Date Oct. 11, 2021,
PCT Pub. No. WO2020/214419, PCT Pub. Date Oct. 22, 2020.
Claims priority of provisional application 62/834,143, filed on Apr. 15, 2019.
Prior Publication US 2022/0162178 A1, May 26, 2022
Int. Cl. C07D 307/46 (2006.01)
CPC C07D 307/46 (2013.01) 9 Claims
OG exemplary drawing
 
1. A process for isolating humins from a feed source, comprising:
providing a feed source to a thin-film evaporator, wherein the feed source comprises:
a multicomponent solvent comprising water and a water-miscible aprotic organic solvent; and
a dissolved dry residue comprising a humin compound content;
wherein the feed source has a pH of between about 1-4 pH; and
processing the feed source within the thin-film evaporator to provide an isolated solid material comprising:
a moisture content of about 0.3-2 wt. %;
a furan containing compound content of about 0.9-5 wt. %;
a sugar content of about 0.1-2 wt. %;
a dioxane content of about 0.02-1 wt. %; and
an ash content of about 0.1-6 wt. %.