MICROWAVE ASSISTED BIOMASS EXTRACTION PROCESS AND INSTALLATION
Номер патента: FR2955331B1
Опубликовано: 11-05-2012
Автор(ы): Bernard Mompon, Jean-Yves Anizon
Принадлежит: Archimex
Опубликовано: 11-05-2012
Автор(ы): Bernard Mompon, Jean-Yves Anizon
Принадлежит: Archimex
Реферат: The process of extracting a natural product comprising a volatile molecule and/or a less volatile molecule from a biological material by microwaves, comprises placing the biological material in an enclosure (1) in the absence of any solvent, extracting a portion of the volatile natural product from the biological material by applying microwaves, and heating the main portion of the enclosure for compensating a temperature drop resulting from the water evaporation of the biological material. The extraction is carried out by irradiating the biological material by microwaves. The process of extracting a natural product comprising a volatile molecule and/or a less volatile molecule from a biological material by microwaves, comprises placing the biological material in an enclosure (1) in the absence of any solvent, extracting a portion of the volatile natural product from the biological material by applying microwaves, and heating the main portion of the enclosure for compensating a temperature drop resulting from the water evaporation of the biological material. The extraction is carried out by irradiating the biological material by microwaves in the enclosure to increase the temperature of the biological material at a temperature greater than 100[deg] C and at a reference pressure of 1.1-5 bars, reducing the pressure intermittently within the enclosure from 0.1-4 bars depending on the reference pressure reached during the microwave irradiation of the biological material, collecting and condensing a vapor containing the natural product. The reference pressure at the interior of the enclosure is 1.3-3 bars during the step of irradiating the biological material, and the decrease in pressure is 0.3-3 bars. Steam is injected inside the enclosure under a pressure of 1.4-2.2 bars and at 109-124[deg] C such that the rise in pressure of the enclosure is 0.4-2 bars/minute. The step of separating the natural product comprises refrigerating the water vapor containing the natural compounds, settling the liquid mixture resulting from the refrigeration and separating such natural compounds and water resulting from the settling. A part of water resulting from the settling step is injected into the enclosure to perform a step of irradiation on the biological residual material. The step of microwave irradiation is conducted to apply a power of 100-10000 W/kg of material with mechanical stirring. An independent claim is included for an installation for extracting a natural product comprising a volatile molecule and/or a less volatile molecule from a biological material by microwaves.
Hydrofluorocarbon solvent recycling in biomass extraction.
Номер патента: GB2353736A. Автор: Stuart Corr,James David Morrison,Frederick Thomas Murphy,Robert Low,Paul A Dowdle. Владелец: Imperial Chemical Industries Ltd. Дата публикации: 2001-03-07.