Once the oil passes through our stringent process of neutralization, pre treatment and bleaching, it becomes a mixture of the required liquid, along with certain colouring bodies, odoriferous matter as well as fatty-acids. These harmful wastes affect the quality of the oil in a great manner. More so, they(especially the odoriferous matter) impart and foul smell along with a weird color. In order to get rid of such items, the oil goes through a De-acidification procedure. This process consists of four 3 divisions- de-aeration, regeneration and final heating, all of which is carried out thanks to the utilization of high vaccum coupled with open steam with considerable residence time. Once this strict operation is taken care of, the oil is cooled and the certain anti-oxidants are mixed with the remaining solution so as to increase it’s durability aspect.
CONTINUOUS DEODORISATION SYSTEM
With the help of a technology-driven Deareator Feed Pump, our Feed Tanks consistently pump out quality-oriented bleached oil. In the initial stages, the oil is first warmed up to a certain temperature via an outgoing deodorized oil, which is preceded by the Deaerating Heater (if required). All of this takes place in the pre-heated the Deaerating Economizer. Each of the containers are allowed to fill up to the brim with vaccum, so as to trim down the residual air created to the least. Once this is done perfectly, the Discharge Pumps then carries forward the heated oil Heat equipments, which further raises the temperature of the liquid to greater degrees, thanks to our effective range of hot deodorized oil. At this stage, the oil is at it’s maximum heat, and is thus processed with the help of a thermal fluid, which is obtained through the Thermal Oil Heater. In the end, a particular section of the fatty acids are removed completely, so that the liquid temperature keeps rising.
Stripping-Our packed columns are occupied by a unique packaged structure, which is devised by our team of experts. Thanks to this construction, once the blistering hot oil enters the columns, it is evenly distributed into thin films, and are agitated thanks to the stripping steam flowing counters present on the lower end of the columns. Thanks to this process, the fatty acids along with numerous other evaporable impurities present in the oil are diffused and separated out with the stream. Since the residence time of the column is only for around a few minutes, the majority of the fatty acids which consist of aldehydes, ketones etc. In the oil are instantly removed, just before any heat creates unrecoverable damage.
Deodorizing-after the heavy stripping process takes place, the removed oil is transferred to a Deodorizer, where it divides itself into the channels of a series of vertically stacked compartments (trays), most of which is carried out a stripping stream. After this, a constant thermal action breaks down carotene and other color bodies, which enable the liquid to have a lighter color than before. Do note, that the remaining fatty acids, by this time, has already come down to an insignificant level. The steam then glides via the pre-packed columns, and the positive point is that there are absolutely no separate steam required for the stripping column. An important fact to keep in mind here, is that the maximum retention time required in the Deodorizer in roughly at max 70 minutes.
Cooling-How is the deodorized oil cooled? Well, the liquid is first transferred to the advanced Deodorizing Economizer machines at first. From here, once the oil is released, then a ‘Product Pump’ is utilized, which boosts the cooling process of this discharge, by storing them in temperature controlled Deaerating machines and Product Cooler. Finally, once we add a special anti-oxidant to the oil present in the Deodorised Economizer machines, they are at last sent to our storage facilities, with the help of cyclic product filters.
Distillate Recovery-After reading the above information, one must be wondering what would happen to the waste impurities which were once segregated. Well, these fatty acids and impure particulate are condensed and recycled via vapour scubbers, but only once they are evaporated from the oil and once cooled. With the help of a Distillate Pump, the distillate matter is circulated and is finally cooled with the help of low temperature water. The leftover materials are then dismissed from the scrubbers to storage vents.
Designed as per international standards, the Deaerator is powered with a live steam injection system coupled with full vacuum, which ensures optimal deareation of the liquid which cuts down the polymerization inside the heat exchangers.
Majority of the heat is returned back from the deodorized oil, so as to make sure that the oil temperatures in order to enhance it’s shelf life.