Abstract
In our countercurrent belaching process, vegetable oils are bleahced in several stages. The bleaching earth and oil are separated after each treatment stage. The separated bleaching earth is fed to the preceding blenching stage, while the oil flows to the next treatment stage where it is brought into contact with less-spent bleaching earth. Fresh bleaching earth is introduced into the process before the last bleacing stage, and the spent bleaching earth is discharged from the process after the first bleaching stage. Unbleached oil is fed to the first stage, while bleached oil leaves the bleaching plant after passing through the last bleaching stage. Bleahcing earth requirements are low (up to 47% lower than for batch bleaching).In our countercurrent belaching process, vegetable oils are bleahced in several stages. The bleaching earth and oil are separated after each treatment stage. The separated bleaching earth is fed to the preceding blenching stage, while the oil flows to the next treatment stage where it is brought into contact with less-spent bleaching earth. Fresh bleaching earth is introduced into the process before the last bleacing stage, and the spent bleaching earth is discharged from the process after the first bleaching stage. Unbleached oil is fed to the first stage, while bleached oil leaves the bleaching plant after passing through the last bleaching stage. Bleahcing earth requirements are low (up to 47% lower than for batch bleaching).