US 11,986,793 B2
Upgrading of a raw blend into a diesel fuel substitute: poly(dimethoxymethane)
Evan Visser, Spring, TX (US); and Walter Breidenstein, Boyne Falls, MI (US)
Assigned to Gas Technologies LLC, Walloon Lake, MI (US)
Filed by GAS TECHNOLOGIES LLC, Walloon Lake, MI (US)
Filed on Aug. 27, 2021, as Appl. No. 17/459,038.
Application 17/459,038 is a division of application No. 16/434,318, filed on Jun. 7, 2019, granted, now 11,103,849, issued on Aug. 31, 2021.
Application 16/434,318 is a division of application No. 15/693,991, filed on Sep. 1, 2017, granted, now 10,322,397, issued on Jun. 18, 2019.
Prior Publication US 2021/0387157 A1, Dec. 16, 2021
Int. Cl. B01J 19/24 (2006.01); B01D 3/00 (2006.01); B01D 3/14 (2006.01); B64C 27/12 (2006.01); C07C 41/56 (2006.01); C07C 41/58 (2006.01); C10G 5/06 (2006.01); C10L 1/02 (2006.01); F16H 57/00 (2012.01); F16H 57/025 (2012.01); F16H 57/04 (2010.01); F16H 57/02 (2012.01)
CPC B01J 19/245 (2013.01) [B01D 3/009 (2013.01); B01D 3/143 (2013.01); B64C 27/12 (2013.01); C07C 41/56 (2013.01); C07C 41/58 (2013.01); C10G 5/06 (2013.01); C10L 1/026 (2013.01); F16H 57/0025 (2013.01); F16H 57/025 (2013.01); F16H 57/0424 (2013.01); F16H 2057/02043 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A system for forming poly(dimethoxymethane) comprising:
a source that provides a feedstock, the feedstock includes a first formaldehyde-containing blend;
a heater configured to heat the first formaldehyde-containing blend to breakdown poly(oxymethylene) glycols and poly(oxymethylene) hemiformals into formaldehyde, methanol, water and shorter oligomers to form a second formaldehyde-containing blend;
a first reaction and separation station that receives the second formaldehyde-containing blend as the feedstock and outputs a first bottom stream and a first top stream, the first reaction and separation station positioned downstream of the heater, the second formaldehyde-containing blend including methanol, formaldehyde, and water, the first top stream including dimethoxymethane that is produced from a reaction between methanol and formaldehyde, the first bottom stream including water;
a second reaction and separation station that receives the first top stream and outputs a second bottom stream and a second top stream, the second bottom stream including poly(dimethoxymethane) and the second top stream including dimethoxymethane, methanol and ethanol; and
a third separation station that receives the second top stream and outputs a third bottom stream and a third top stream, the third bottom stream including methanol and ethanol and the third top stream including dimethoxymethane.