PRODUCT SEPARATION & PURIFICATION METHOD AND SYSTEM

• Main Authors: RAVN, Esben, IVERSEN, Steen Brummerstedt, JENSEN, Claus Uhrenholt, VELLING, Anders Bach, EGHOLM, Henrik
• Format: Patent
• Language: English; French; German
• Published: 26.10.2022
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The invention relates to a method of separating and purifying products from a hydrothermal and/or solvothermal conversion process of carbonaceous material adapted to convert a feed stream comprising carbonaceous material at a pressure of at least 100 bar and a temperature of at least 300° C., where the converted feed stream (product mixture) comprises a mixture of CO2 containing gas, an oil phase, an aqueous phase comprising water soluble organics and dissolved salts, and inorganic solid phase; where the product mixture is cooled to a temperature in the range 40 to 250° C., and depressurized to a pressure in the range 1 to 30 bar, the method comprising-separating a gas comprising CO2 from the product mixture in a degasser such as a flash separator, and-separating a water phase from the at least partly degassed converted feed mixture in a first separation step of the separation, and adding washing agents in the form of an acidifying agent and a diluent to the at least partly degassed and at least partly dewatched product mixture, and separating the mixture with added washing agents into an oil rich phase, a water rich phase and a solid rich phase in a second step of the separation process, and further at least partly recovering the diluent from the oil rich phase.