US 12,331,252 B2
Method of desulfurizing an oil composition
Mathew Selwyn Wyatt, Karlovy Vary (CZ)
Assigned to CURVE ENERGY PTE. LTD., High Street Centre (SG)
Appl. No. 18/018,250
Filed by CURVE ENERGY PTE. LTD., High Street Centre (SG)
PCT Filed Jul. 28, 2021, PCT No. PCT/IB2021/056836
§ 371(c)(1), (2) Date Jan. 26, 2023,
PCT Pub. No. WO2022/023986, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 2020902648 (AU), filed on Jul. 28, 2020.
Prior Publication US 2023/0287277 A1, Sep. 14, 2023
Int. Cl. C10G 21/20 (2006.01); C10G 21/16 (2006.01); C10G 21/18 (2006.01); C10G 53/14 (2006.01)
CPC C10G 21/20 (2013.01) [C10G 21/16 (2013.01); C10G 21/18 (2013.01); C10G 53/14 (2013.01); C10G 2300/202 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of desulfurizing an oil composition, the method comprising:
flowing an oil composition comprising sulfur through a conduit comprising a constricted region, wherein oil-phase bubbles form in the constricted region and collapse by hydrodynamic cavitation in a turbulent zone downstream of the constricted region;
contacting the oil composition with an immiscible deep eutectic solvent in the turbulent zone, thereby extracting at least a portion of the sulfur from the oil composition into association with the deep eutectic solvent; and
separating the deep eutectic solvent and the extracted sulfur from the desulfurized oil composition.