US 11,773,332 B2
Method of manufacturing renewable diesel from biological feedstock
Thomas Bass, Mandeville, LA (US); James Rolston, Friendswood, TX (US); and Terry Sparkman, Beaumont, TX (US)
Assigned to Green Carbon Development, LLC, Houston, TX (US)
Filed by Green Carbon Development, LLC, Houston, TX (US)
Filed on Jul. 1, 2022, as Appl. No. 17/856,707.
Application 17/856,707 is a continuation in part of application No. 17/557,329, filed on Dec. 21, 2021.
Claims priority of provisional application 63/282,804, filed on Nov. 24, 2021.
Claims priority of provisional application 63/128,526, filed on Dec. 21, 2020.
Prior Publication US 2022/0333016 A1, Oct. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C10G 3/00 (2006.01); C11C 1/04 (2006.01); C11C 1/10 (2006.01); C11B 3/00 (2006.01); C11C 3/12 (2006.01)
CPC C10G 3/46 (2013.01) [C10G 3/50 (2013.01); C11B 3/006 (2013.01); C11C 1/04 (2013.01); C11C 1/10 (2013.01); C11C 3/12 (2013.01); C10G 2300/1011 (2013.01); C10G 2300/202 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4081 (2013.01); C10G 2300/708 (2013.01); C10G 2400/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing fuel comprising C10 to C18 alkanes, the method comprising:
introducing water and a primary feedstock comprising biologically-derived triglycerides and catalyst poisons into a first reaction chamber under counter-current flow conditions;
hydrolyzing the triglycerides of the primary feedstock within the first reaction chamber for at least an hour and simultaneously obtaining, via liquid-liquid extraction, (i) an aqueous fraction comprising glycerol and a first portion of the catalyst poisons and (ii) a non-aqueous fraction comprising a second portion of the catalyst poisons and free fatty acids resulting from hydrolysis of the triglycerides;
obtaining an intermediate feedstock comprising at least a portion of the non-aqueous fraction;
distilling the intermediate feedstock to form a purified intermediate feedstock comprising free fatty acids and a bottom stream containing unreacted triglycerides, diglyceride, monoglyceride, free fatty acids, and remaining catalyst poisons;
hydrotreating the purified intermediate feedstock in a second reaction chamber comprising hydrogen and a metallic catalyst to produce the fuel comprising C10 to C18 alkanes;
removing the remaining catalyst poisons from the bottom stream to form a recycle stream containing unreacted triglycerides, diglyceride, monoglyceride, and free fatty acids; and
returning the recycle stream to the first reaction chamber.