Rice barn spent earth

he process refers to recovery of oil from spent bleaching earth recovered from vegetable oil refining process. The process involves three sub- processes comprising of a) reacng the spent bleaching earth with a solvent selected from a group consisng of toluene, acetone, xylene, isopropyl alcohol or n- hexane at a temperature between 35°C. to 50°C.; b) separang the solids and liquid from slurry formed in the previous step; and c) extracng oil from the liquid fracon obtained in the previous step. The separaon of the solids and the liquid from slurry can be achieved in two steps. The slurry mixture of solids and liquid is first separated into a solid fracon and a liquid fracon. The solid fracon so separated sll contains a significant poron of oil. Therefore, the solid fracon is reacted with some solvent. The other slurry of solids and liquids is again separated into a solid fracon and a liquid fracon.

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