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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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ACTIVITY 1 INVESTIGATION OF THE STORE Investigate the store of any one of the laboratories in your study centre and write a report in approximately 500 words. Procedure
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
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hi, i am designing an (absorption column), i need help. either by a tutor to take me through the design, or by actually doing the design. please let me know if you help thanks
ac++ programming which calculate molcular weight of hydrocarbon compounds
The magnetic behavior of materials can be classified into the following five major groups: 1. Diamagnetism 2. Paramagnetism 3. Ferromagnetism 4. Ferrimagnetism 5. Antiferr
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