Edible Oil Bleaching Technology

Date:2018-08-06 12:59

  Bleaching section is a major part of palm oil mill process,Bleaching process is carried out to remove color pigments, residual phosphatides, metals, soaps and oxidation products. To achieve this we carry out bleaching earth and activated carbon bleaching process in two stages in a continuous manner. In the first stage oil is heated at 100-110 °C and mixed with bleaching earth and kept at suitable temperature and mixed with mild agitation by specially designed turbine blades agitator system under vacuum. Oil is sprayed through specially designed nozzles & mixed with bleaching earth and sufficient retention time is given to attain maximum possible bleaching of oil. By spraying oil moisture is removed in the vessel itself. In the second stage oil slurry is pumped to a set of vertical pressure leaf filters where two filters are used alternatively to remove oil from bleaching earth and cake is discharged through bottom actuated butterfly valve. After filtration oil is circulated through candle type polish filters to further polish the oil & remove any traces of particles.

  Advantages of Huatai Bleaching Plant:

  · Uniform quality product

  · Reduced bleaching earth consumption

  · High reduction in color by efficient process.

  · Highly efficient agitator, low power consumption.

  · Efficient dosing of bleaching earth in the bleacher vessel

  · Low carry over of bleaching earth in the vacuum system

  · Maximum life of filter leaves.

  · Low loss of oil in spent

  · Low steam consumption.