Edible Oil Refining Plant
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We are offering edible oil refining plant. Svm agro processor is a leading manufacturer, exporter & supplier of edible oil refining plant. The edible oil refining plant is a unique industrial equipment, which is highly efficient in refining edible oil. The edible oil refining plant has a robust construction and employs a number of processes. The processes have been explained in detail below :
process
continuous neutralizing process
the shortmix plant is built up as an entirely closed system and is designed to handle vegetable oils in thefollowing operations:
degumming water degumming gum conditioning with concentrated phosphoric acid water washingvacuum dryingthe above mentioned operations form stages of continuous degumming and alkali refining process and the dry neutralized oil is obtained continuously from the plant.
gum conditioning stage
the degummed oil from intermediate storage tank is heated to the required temperature for refining by heat exchanger and pumped to gum conditioning mixer, where oil is mixed with required quantity of concentrated phosphoric acid, pumped into the mixer by a metering pump. The oil is allowed to hold in gum conditioning mixer where precipitation of phosphatides and metal compounds takes place and then fed to neutralization mixer.
water degumming
crude oil is pumped in a continuous and constant stream by pump heated to required temperature in k, the plate heat exchanger mixed with pre-calculated quantity of water in an inline mixer and fed to a precipitation tank. Oil-water mixture is allowed sufficient residence time in the precipitation tank for the gums to agglomerate on hydration and then pumped to separator si where the oil and hydrated gums are separated and pumped to storage, disposal, or gum drying plant in case of soybean gums and degummed oil is stored in degummed oil tank.
water washing stage
hot water is mixed with the neutral oil from s2 in water washing mixer and this water, enriched with residual soap is removed from oil in the oil below 70 ppm.
vaccum drying process
washed oil is fed continuously by vacuum pump to the vacuum dryer and sprayed through specially designed nozzles. The vacuum dryer is kept under a vacuum of 70 torr. The dried oil from the vacuum chamber is continuously drawn and pumped by pump to intermediate storage tank.
bleaching process
the incoming oil enters the oil heater where oil is heated to the bleaching temperature. Bleaching chemicals are proportioned into the bleacher by automatically working dosing unit. The bleacher operates under vacuum of 700 mm hg or absolute pressure 70 mm of hg. The bleacher vessel is equipped with an agitator in each compartment to maintain good mixing of bleaching chemicals and oil. After bleaching, the slurry of hot oil and bleaching earth is transferred to the filter section for removing bleaching chemicals.
continuous deodorizing process
the preheated oil is filtered in filters and then pumped in to the deaeratorvessel (ak 801) where it is deaerated. After deaearation the oil is continuously heated in regenerative heat exchanger (e802) utilising hot oil from the deodouriser. The final deodourising temperature is achieved in a shell and tube heat exchanger by thermal oil, which is circulated through an automatically working heating unit.
next the oil enters the packed column deodouriser (ak802) where it flows continuously through
the packing in the stripping section of the column. The specially designed distributor ensures uniform distribution of the hot oil over the entire packing area. As the oil flows down it meets the upward flow of steam which strips away the volatile material from the oil at the given temperature, and system pressure.
the packing provides sufficient mass transfer surface for effective removal of volatile material. The oil trickling down at the bottom of the stripping section is collected. Flow control system at the outlet of the deodorizer ensures maintenance of required level in the bottom of the stripping section. The steam used for "stripping off" volatile matters in the oil is distributed evenly and intensively by separate spargers installed between two baffles. The steam meets the deodorizer oil stripped of all volatile matter and rises through the stripping section, stripping off the volatile matter from the oil.
the countercurrent flow of steam and oil in this manner across specially designed packing ensures lower steam consumption than conventional deodorisers. The deodouriser oil leaving the deodouriser is immediately cooled by the regenerative heat exchanger (ak803) , and then further cooled in a shell and tube heat exchanger (ak804) finally the oil is passed through two alternatively working polish filters (f 803 & f 804) before cooling in plate heat exchanger ak 805 and sending to storage.
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