HEATING AND COOLING METHOD FOR A HIGH PRESSURE PROCESSING SYSTEM

• Main Authors: IVERSEN, Steen Brummerstedt, JENSEN, Claus Uhrenholt, IRONSIDE, Andrew
• Format: Patent
• Language: English; French; German
• Published: 24.03.2021
• Subjects: CARBURETTING AIR OR OTHER GASES; 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; PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; 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 heating and cooling a feed mixture in a continuous high pressure process for transforming carbonaceous materials into liquid hydrocarbon products in a high pressure processing system adapted for processing a feed mixture at a temperature of at least 340° C. and a pressure of at least 150 bar, the high pressure processing system comprising a first and a second heat exchanger having a heat transfer fluid comprising at least 90% water, preferably at least 99% water circulating in the external part of the first and the second heat exchanger, the first heat exchanger comprising a cold internal input side and a hot internal output side, the second heat exchanger comprising a hot internal input side and a cold internal output side, the system further comprising a high pressure water heater and a high pressure water cooler between the first and the second heat exchanger, where the pressurized feed mixture is heated by feeding the feed mixture to the cold internal side of the first heat exchanger, heating and pressurizing the heat transfer fluid to a pressure of at least 240 bar and a temperature of at least 400° C. at the input to the hot external side of the first heat exchanger, where the cooled heat transfer fluid from the first heat exchanger having a temperature in the range 150 to 300° C. is further cooled to a temperature of 60 to 150° C. in the high pressure water cooler prior to entering the cold external side of the second heat exchanger, where the pressurized, heated and converted feed mixture is cooled to a temperature in the range 60 to 200° C. by feeding it to the internal side of the second heat exchanger, and where the partly heated heat transfer fluid is further heated in the high pressure water heater before entering the first heat exchanger.