Towards an energy-friendly and cleaner solvent-extraction of vegetable oil

① Leaching column, ② multiple hearth desolventizer-toaster, ③ 1st evaporator, ④ 2nd evaporator, ⑤stripping tower, ⑥ cooler, ⑦ absorption column, ⑧ desorption column, ⑨ water/hexane separator, ⑩ waste water treatment plant. Areas of potential improvements are yellow-highlighted. Current Oil-extraction Process and Potential Improvements.136