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It is desired to concentrate a NaOH solution from 12.5 % to 40% in a double effect evaporator. 50,000 lb/hr of feed solution enters the evaporator at 120 oF, and steam at 15 psig is available for effecting the concentration. Vacuum in the 2nd effect is held at 24in. Hg, and water from a cooling tower is available at 85 oF. Estimate
(a) quantity of feed and water needs for the forward feed operation,
(b) quantity of feed and condenser water need for the backward feed operation,
(c) Surface need for the operation in (a), suppose U is 400 and 250 Btu/hr(ft2) (oF) for the first and second effect respectively. UD equal to 450 and 350 in two effects correspondingly.
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in the combustion of heptane in oxygen CO2 was produced.if 500kg of dry ice was produced of which 50% of the CO2 was converted to dry ice,what is the amount of heptane needed to bu
Explain lattice energy The lattice energy of an ionic solid is calculates the strength of bonds in that ionic compound. It is given the symbol U and is equal to the amount o
#synthesis and uses of westron
problems of scales and sludge formation
Thermal spelling: The breaking or cracking or peeling off the refractory is known as spelling. A good refractory must show a good resistance to thermal spelling. Thermal spelling
1. Discuss the relation between the structure and following properties of polymers a) Crystallinity b) Elasticity 2 . Explain the manufacture of Neoprene rubber. Menti
What is wrong with each of the following attempts to write an electron configuration? Justify your answer with suitable explanation. (a) 1s22s3 (b) 1s22s22p23s2 (c) 1s22s23s2 (d) 1
Explain Loss Angle Loss Angle can be described as the arc-tangent of the electrical dissipation factor.
will u provide chemical properties of nitroparaffins and its block diagram for preparation of nitroparaffins?
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