US 12,435,277 B2
Cost efficient integration of hydrothermal liquefaction and wet oxidation wastewater treatment
Ib Johannsen, Aarhus (DK)
Assigned to Circlia Nordic ApS, Aarhus (DK)
Appl. No. 17/786,948
Filed by CIRCLIA NORDIC APS, Aarhus (DK)
PCT Filed Dec. 20, 2020, PCT No. PCT/DK2020/050397
§ 371(c)(1), (2) Date Jun. 17, 2022,
PCT Pub. No. WO2021/121526, PCT Pub. Date Jun. 24, 2021.
Prior Publication US 2023/0013664 A1, Jan. 19, 2023
Int. Cl. C10G 1/06 (2006.01); C02F 1/02 (2023.01); C02F 1/74 (2023.01); C02F 11/18 (2006.01); C02F 103/26 (2006.01)
CPC C10G 1/065 (2013.01) [C02F 1/025 (2013.01); C02F 1/74 (2013.01); C02F 11/18 (2013.01); C02F 2103/26 (2013.01); C02F 2303/10 (2013.01); C10G 2300/1011 (2013.01); C10G 2300/4081 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A hydrothermal liquefaction (HTL) system for production of bio-crude oil comprising:
an inlet unit for aqueous slurries of biomass;
a high pressure pump providing an outlet pressure of at least 100 bar in fluid communication with the inlet unit;
a continuous hydrothermal liquefaction (HTL) reactor comprising one or more separate HTL reactors, adapted to produce bio-crude oil;
a heat exchanger, adapted to being heated directly or indirectly via a product stream of a hydrothermal liquefaction (HTL) reactor or a wet oxidation reactor;
a continuous wet oxidation reactor comprising one or more separate wet oxidation reactors adapted to process aqueous wastewater generated by the continuous hydrothermal liquefaction (HTL) reactor; and
a hydrothermal liquefaction (HTL) process heater that is adapted to receive thermal energy from a wet oxidation reactor,
wherein the one or more separate hydrothermal liquefaction (HTL) reactors and the one or more separate wet oxidation reactors are arranged co- or counter-current in direct thermal contact on opposite sides of a tubular heat exchanger optionally within a multitubular system.