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Distillative separation, particularly of thermolabile volatile substances, is often associated with a significant reduction in quality due to the thermal degradation of the substances being distilled. For example, many substances containing plant matter, such as essential oils, can scarcely be distilled without degradation.
State-of-the-art distillation methods are based mainly on steam distillation as a carrier steam distillation for primary extraction, which merely results in a complex mixture of substances as essential oil.
Electrical precipitators are used to precipitate particles out of gas streams in a process for which the electrical resistance of the particles plays a decisive role in how the precipitator functions.
An electrical precipitator is suitable for precipitating particulate matter with a specific electrical resistance within a range from 10⁴ to 1011 Ωcm. Particulate matter with higher electrical resistance causes what is called a “back corona”, which severely disrupts the precipitation process.
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