HYDROTHERMAL CARBONIZATION OF SEWAGE WASTES

• Main Authors: MIKULA, ANTHONY, L, SCHENDEL, FREDERICK, J, HEILMANN, STEVEN, M, VALENTAS, KENNETH, J, VON KEITZ, MARC, GREGOR, WOOD, BRANDON, MICHAEL
• Format: Patent
• Language: English; French
• Published: 19.12.2013
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMPOUNDS THEREOF; FERTILISERS; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; LIQUEFIED PETROLEUM GAS; LUBRICANTS; MANUFACTURE THEREOF; METALLURGY; NATURAL GAS; NON-METALLIC ELEMENTS; ORGANIC CHEMISTRY; ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PHOSPHATIC FERTILISERS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The present disclosure provides methods for hydrothermally treating sewage wastes to preferably obtain valuable products, including fatty acids, carbon-neutral combustible hydrochar fuels, heavy metal salts for recycling into industrially important metals, and phosphoric acid and derivatives thereof. Fatty acids can be chemically transformed into useful products such as soaps, cosmetics and liquid transportation fuels such as biodiesel and conventional gasoline, diesel and aviation fuels; hydrochars created in the process can be combusted and the energy created used to generate electricity; heavy metal salts can be chemically reduced to form industrially important metals for use as catalysts; and phosphoric acid and its derivatives have very important roles as fertilizers in agriculture. La présente invention concerne des procédés pour le traitement hydrothermique d'eaux usées afin d'obtenir de préférence des produits utiles, comprenant des acides gras, des carburants hydrocarbonés combustibles neutres en carbone, des sels de métal lourd pour recyclage en métaux industriellement importants, et de l'acide phosphorique et des dérivés de celui-ci. Les acides gras peuvent être chimiquement transportés en produits utiles tels que des savons, des cosmétiques et des carburants de transport liquides tels que le biodiesel et des carburants conventionnels d'essence, diesel et d'aviation ; les hydrocarbures créés dans le processus peuvent être brûlés et l'énergie créée utilisée pour générer de l'électricité ; des sels de métal lourd peuvent être chimiquement réduits pour former des métaux industriellement importants pour utilisation en tant que catalyseurs ; et l'acide phosphorique et ses dérivés ont des rôles très importants en tant qu'engrais en agriculture.