The presence of oleophilic impurities in the crude petroleum causes
A.corrosion in the crude distillation unit column overhead system
B.erosion of crude petroleum pumps
C.fouling of heat transfer surfaces
D.all of the above
A.corrosion in the crude distillation unit column overhead system
B.erosion of crude petroleum pumps
C.fouling of heat transfer surfaces
D.all of the above
A.slightly below atmospheric pressure
B.slightly above atmospheric pressure
C.above 5 atm
D.above 15 atm
A.furfural
B.hydrogen peroxide
C.liquid sulphur dioxide
D.phenol
A.liquid sulphur dioxide
B.a mixture of diethylene glycol and water
C.a mixture of methyl ethyl ketone and benzene
D.iron
A.4?C
B.180?C
C.480?C
D.37?C
A.200 to 220?C
B.120 to 130?C
C.40 to 50?C
D.250 to 275?C