oil refining 2

Question 1

Physical refining-steam refining

Answer 1

Use steam stripping under vacuum

Question 2

Physical refining-steam refining more suitable for

Answer 2

oils with high FFA, low phosphatides SUCH AS PALM OIL AND COCONUT OIL

Question 3

degumming is essential in straem refining

Answer 3

to reduce phosphatidesphysi

Question 4

physical refining

Answer 4

no soapstock

Question 5

Advantage of physical refining over chemical refining

Answer 5

• simpler operation
  -oil losses are reduced
  -elimination of soapstock
  -less capital intensice
  -ise of chemicals is reduced
  -less effluent load

Question 6

disadvantage of physical refinining

Answer 6

can oil be used with certain types of crude oils
causes partial loss of tocopherol
require high temp an dhigh vacuum

Question 7

Chemical Refining

Answer 7

01 To saponify FFA by alkaline solution
02 FFA & gums - removed during neutralisation
03 Produces soapstock
04 More suitable for low FFA oils
05 More adaptable to low quality crude oils

Question 8

Advatage of chemical refining

Answer 8

-Successful reduction of FFA
-Can be used with a wider variety of crude oils
-Product is more chemically stable & has longer shelf life

Question 9

Disadvantage of chemical refining

Answer 9

-oil loses saponification and separation loss
-relatively low yield
-expensive trearment and disposal of soapstock