The plant is to use Hexane as solvent to extract oil and other chemical compositions from wood stumps and vegetable seeds. The plant includes a preparation unit which chips feed material into small size to enhance extraction efficiency. Depending on feed material, the counter-current extraction process may vary from 60 to 160 minutes. Hexane solvent is sprayed over the moving bed of material and the oil compositions are removed from the material. The mixture of oil and solvent forms miscella which is sent to distillation unit. Extracted material is fed to desolventiser. Miscella is heated and flashed/stripped gradually to separate hexane and oil components. This process is under vacuum to reduce hexane losses and minimize steam consumption. Uncondensed vapor from distillation is trapped in mineral oil and recovered in the recovery section.