Related Questions

A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides
A Higher economy
B Lower capacity
C Both A & B
D Lower economy
Fqra cold viscous feed, backward feed gives __________ than forward feed.
A A higher capacity
B A lower capacity
C Lower economy
D None of these
In a backward feed multiple effect evaporator
A Feed is introduced in the first effect
B Feed flows from low pressure to high pressure
C No pumps are required between successive effects
D None of these
Multiple effect evaporators ar used to
A Increase the steam economy & decrease the capacity
B Increase the steam economy & the capacity
C Decrease the steam economy & the capacity
D Decrease the steam economy & increase the capacity
Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the
A Practical limit reached, due to low heat transfer rate because of inadequate temperature difference
B Economic limit reached, when the plant cost exceeds the saving of steam
C Both A & B
D Neither A nor B
Multiple effect evaporators are commonly used in the manufacture of P. Paper Q. Superphosphate R. Sugar S. Fats
A P and Q
B P and R
C P and S
D R and S
In a forward feed multiple effect, the pressure build up will be
A Least at the inlet of the first effect
B Least at the outlet of the last effect
C Highest at the inlet of the last effect
D Highest at the outlet of the last effect
In a forward feed multiple effect evaporator, the pressure is
A Highest in last effect
B Lowest in last effect
C Same in all effects
D Dependent on the number of effects
In a forward feed multiple effect evaporator unit
A Viscosity of liquid is highest in first effect
B Transfer from effect to effect is done by pumps
C No pump is required to withdraw the product from the last effect
D None of these
For a cold dilute feed to produce thick viscous liquor, backward feeding as compared to forward feeding results in
A Increased economy
B Decreased economy
C Lower capacity
D No effect on economy

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