Edible oil refining the first step, is the hair oil pretreatment, namely, as far as possible to remove (isolated) hair oil insoluble mechanical impurities.Especially in refined oil equipment by pressing oil, containing suspended solids.The existence of such impurities. Will make the hair oil, please send, storage and processing operations such as create difficulties, directly affects the quality and yield of the refined oil.Commonly used pretreatment method. Sedimentation, filtration and centrifugation three kinds of refined oil equipment to choose from.
(a) settlement
Sedimentation, in wool oil pool (if no fuel tank). It is the use of gravity sedimentation, let the heavy impurities sink to the bottom, the oil floats on top.Settling efficiency depends on the particle size of mechanical impurities and the proportion of oil and impurities. At the same time, maintain a certain amount of oil temperature, lower oil drilling degrees, can speed up the settlement.Settlement to miscellaneous equipment. Sichuan is relatively simple. But the efficiency is low. Not fully meet the requirements of continuous production.General - are settlement as auxiliary measures, and filtration or centrifugation, to reduce the load of filtering and centrifugal separation equipment.
(2) filter
Filter, it is a floating oil mixture, through filter media (namely the filter medium, is researched for the filter cloth, mesh), through liquid Hugh grease, being trapped and solid content on the surface of the vacuum filter (http://www.palmmill.com/Products/proc/33.html) medium. To achieve the aim of removing impurity.Factors, which affect the filtration velocity, filtration pressure, filter medium, the effective use of the area, the temperature of the oil (the degree decided to plant), kinds of filter medium, etc.Commonly used equipment for the oil filter, plate and frame filter press, leaf filter, tube-type filter press.
1. The plate and frame filter press plate frame filter press by the stand...