F22B1/00—Methods of steam generation characterised by form of heating method
F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
F22B1/08—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being steam
Control the process of distillation under pressure or vacuum without use of vacuum pumps, distileries are with different volumes, they distilling a raw material in dry or liquid condition, extracting for second time essential oils from liquid results obtained after distilation