C - Chemistry – Metallurgy – 11 – B
Patent
C - Chemistry, Metallurgy
11
B
C11B 9/02 (2006.01) C11B 9/00 (2006.01) C11B 3/12 (2006.01)
Patent
CA 2681816
A method of extracting essential oil from biomass wastes puts biomass wastes, such as wood residuals, wood chips or other plants, in an air-tight oxygen-free reaction vessel to be heated up indirectly, for conducting a thermal pyrolysis cracking reaction (i.e. dry distillation); and guides volatile gas which is distilled when the processed wastes disintegrate, into a condenser to be condensed as liquid which is then separated into water and oil through an oil-water separation tank. Whereas, non-liquefied gas is discharged outside after deodorizing, and residuals in the reaction vessel are processed with high-temperature dry distillation once to become activated carbons. In processing, temperature and pressure in the reaction vessel are controlled in multiple phases, along with using a suction pump of a changeable speed and a changeable flow rate to suck out air in high speed in phases, to keep internal pressure of the reaction vessel at a low pressure condition, thereby shortening a processing time and acquiring high quality essential oil and activated carbons as by-products. The present invention also includes a system device to implement this method. In the oil-water separation tank of this device, an ultrasonic generator is provided to re-disintegrate tars, which improves quality of the oil products.
Lin Wei-Chih
R. William Wray & Associates
LandOfFree
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