How to operate edible oil refinery machine?
The general flow diagram is as follows:
Edible oil refinery process flow chart
Preparation for starting edible oil refinery machine:
1.Test crude oil,and test acid value and color,if you have laboratory, please do sample test.
2. Connect cooling water
3. Prepare bleaching clay,caustic soda(NaOH) and coal;
4. Connect electric power.
5. Check whether vacuum pump,air compressor,filter and heat conduction oil pump are ok.
6. When changing heat conduction oil,must heat it for 5 hours about 98℃.If there is no steam to spill from head tank,it’s ok to heat it to 280℃ slowly.
Alkaline refining operation instruction:
Starting equipment: Light heat conduction oil furnace,control the temperature of heat conduction oil at about 98℃.Start vacuum pump,after it’s normal,it’s ready to be used.Operation process of batch refining:
(1)feeding oil (2)heating (3)acid refining (4) alkali refining (5)water washing 2-3 times (6)drying and dehydration, the total time is about 24 hours.
Alakli refining operation methods include low temperature concentrated alkali method(initial temperature is 20-30℃,alkalinity is 20-30Be) and high temperature light alkali method(initial temperature is 75℃,alkalinity is 10-16Be) according to alkalinity and oil temperature,the former is used widely,and the latter is mainly used for crude oil with low acid value,light color and little impurities.
Water washingAfter soap-stock is discharged,continue to heat oil to 90℃,then add hot water for water washing and stirring.Water temperature should be about 5-10℃higher than oil temperature.If water temperature is too low, it will cause emulsification easily.After finishing adding water,continue to stir t for 5 mins,then static settlement for 4 hours, discharge soap water,water wash 2-3 times repeatedly,it depends on clear oil quality. Heat water washing clear oil to 105℃ slowly,stir and dehydrate for 1 hour,water washing clear oil can also suck into decolorization pot directly for vacuum drying for 30mins.
Decolorization operation instruction:
Decolorization tower of edible oil refinery machine
Deodorization operation instruction:
Decolorant oil is sucked into deodorization pot by vacuum pump, when vacuum degree reaches above 755mmHg,start distillation and at the same time, time for deodorization.
Deodorization tower of edible oil refinery machine
2.Deodorization temperature: 240℃/755mmHg 260℃/759mmHg
3.Deodorization vacuum degree: above 755mmHg.
4.During the whole timing process:must steam distillation.
5.After finishing deodorization,continue to shut off direct steam under vacuum condition,shut off heat conduction oil,open cooling water valve,when the temperature of oil decreases to about 40-80℃,shut off vacuum pump valve, after inspection by sampling is qualified,it will be packed and the whole high class cooking oil production process is finished.
Caution with large scale oil refining machine:
1. (1)After changing heat conduction oil every time,the temperature of heat conduction oil furnace must be kept at about 90℃ and circulated for above 5 hours.
2. (2)About neutralization pot and decolorization and deodorization equipment,heat energy must be distributed and adjusted reasonably.When deodorizing,must guarantee the temperature of deodorized oil at 240-260℃,other equipments are mainly adjusted by valves.
3. (3)After maintenance,all heat conduction pipelines must use graphite gasket,adopt high temperature valves when changing valves.
4. (4)Before lighting heat conduction furnace, must start heat conduction oil pump firstly, after heat conduction oil furnace’s flameout, heat conduction oil pump must remain in operation, it can not be shutted off until the temperature of heat conduction oil decreases below 100℃.
Large scale edible oil refinery machine video:
800tpd fully continuous soybean oil refining machine running video
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