US 12,359,139 B2
System and methods of processing waste to generate energy and green hydrogen
Karen Meyer Bertram, Huntington Beach, CA (US)
Assigned to Integrated Energy, LLC, Huntington Beach, CA (US)
Filed by Integrated Energy LLC, Huntington Beach, CA (US)
Filed on May 19, 2023, as Appl. No. 18/199,772.
Prior Publication US 2024/0384188 A1, Nov. 21, 2024
Int. Cl. F23G 7/00 (2006.01); B01J 6/00 (2006.01); C01B 3/02 (2006.01); C10J 3/72 (2006.01)
CPC C10J 3/72 (2013.01) [B01J 6/008 (2013.01); C01B 3/02 (2013.01); F23G 7/001 (2013.01); C10J 2300/0909 (2013.01); C10J 2300/0916 (2013.01); C10J 2300/0923 (2013.01); C10J 2300/1606 (2013.01); C10J 2300/165 (2013.01); C10J 2300/1675 (2013.01); C10J 2300/1684 (2013.01); F23G 2201/10 (2013.01); F23G 2201/303 (2013.01); F23G 2206/203 (2013.01); F23G 2209/26 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of producing electricity, green hydrogen and clean water from sewage sludge, comprising:
using a dryer to partially dehydrate the sewage sludge:
(a) receive moist hot air from the partial dehydrating of the sewage sludge;
(b) produce a dried intermediate from the partial dehydrating of the sewage sludge; and
(c) produce a dried hot air stream and, using a condenser, produce recovered water from the moist hot air, wherein the dried hot air stream used to further dry the sewage sludge, and wherein the recovered water is clean water;
electrolyzing, using an electrolyzer, a first portion of the recovered water to produce oxygen and the green hydrogen;
feeding a second portion of the recovered water to a hybrid chiller to be used as a cooling stream for the condenser;
feeding the dried intermediate to at least one thermal convertor via an airlock mechanism. wherein the airlock mechanism ensures the at least one convertor remains oxygen-free for pyrolysis;
pyrolyzing the dried intermediate to produce a syngas and a char, wherein the step of pyrolyzing occurs within a temperature range and residence time that decomposes Per-and Polyfluoroalkyl Substances (PFAS) compounds;
combusting at least some of the syngas to operate a turbine;
operating the turbine to run a generator to produce the electricity; and
recovering waste heat from the turbine to use in drying the sewage sludge.