US 12,453,931 B2
Compositions for low-temperature distillation of high-boiling-point molecules
C. Russell Thomas, Boulder, CO (US)
Assigned to Natural Extraction Systems, LLC, Boulder, CO (US)
Appl. No. 18/553,182
Filed by NATURAL EXTRACTION SYSTEMS, LLC, Boulder, CO (US)
PCT Filed Apr. 1, 2022, PCT No. PCT/US2022/023140
§ 371(c)(1), (2) Date Sep. 28, 2023,
PCT Pub. No. WO2022/212898, PCT Pub. Date Oct. 6, 2022.
Claims priority of provisional application 63/250,863, filed on Sep. 30, 2021.
Claims priority of provisional application 63/250,917, filed on Sep. 30, 2021.
Claims priority of provisional application 63/173,196, filed on Apr. 9, 2021.
Claims priority of provisional application 63/170,308, filed on Apr. 2, 2021.
Prior Publication US 2024/0189737 A1, Jun. 13, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 11/02 (2006.01); B01D 5/00 (2006.01); C07C 45/78 (2006.01); C11B 9/02 (2006.01); B01D 11/00 (2006.01)
CPC B01D 5/006 (2013.01) [B01D 11/02 (2013.01); B01D 11/0253 (2013.01); C07C 45/78 (2013.01); C11B 9/027 (2013.01); B01D 2011/007 (2013.01)] 4 Claims
 
1. A composition, comprising a gas phase and a condensed phase, wherein:
the condensed phase comprises sawdust;
the gas phase comprises a molecule;
the molecule is furfural;
the condensed phase comprises the molecule;
the gas phase has a temperature and a pressure;
the temperature of the gas phase is greater than 100 degrees Celsius and no greater than 235 degrees Celsius;
the composition has a rate of sensible heat transfer from the gas phase to the condensed phase of at least 2 joules per gram of the condensed phase per second and no greater than 20 kilojoules per gram of the condensed phase per second;
the molecule has a boiling point at the pressure of the gas phase;
the boiling point of the molecule is greater than the temperature of the gas phase;
the molecule has a vapor pressure at the temperature of the gas phase;
the vapor pressure of the molecule is less than the pressure of the gas phase;
the condensed phase consists of one or both of a solid phase and a liquid phase;
the condensed phase is suspended in the gas phase;
the composition comprises at least 1 gram of the condensed phase per cubic meter of the gas phase;
the composition comprises no greater than 1 gram of the condensed phase per liter of the gas phase;
the composition comprises at least 2 micrograms of the furfural per gram of the condensed phase;
the composition comprises no greater than 200 milligrams of the furfural per gram of the condensed phase;
the composition comprises at least 2 micrograms of the furfural per gram of the gas phase;
the composition comprises no greater than 200 milligrams of the furfural per gram of the gas phase;
the composition has an average velocity of at least 100 millimeters per second;
the composition has a turbulent flow; and
the condensed phase has a surface-area-to-volume ratio of at least 500 per meter.