Unit Ops Geankoplis Flashcards
Tests on a small scale tank 0.3m diameter
N= 0.346hz or 20.8rpm P= 9.8W t= 1.15min
A forward-feed double-effect evaporator, having 10m2 of heating surface
mcondenser= 0.15kg/s SE= 1.57 h1= 2.53 kW/m2K h2= 1.84 kW/m2K
seeds, 20% oil
5 stages
Lo= 20kg
Ln= 40kg
V1= 36kg
soda ash is mixed with lime and the liquor from the second of 3 thickeners
CaCO3= 13.7Mg/day H2O= 129Mg/day thickener: 1: 4.34% 2: 0.47% 3: 0.05%
in the extraction of acetic acid from an aqueous solution with benzene
LMDF= 0.0087 kmol/m3 OTC= 7.8x10^-4/s HTU= 1.63m
extract acetic acid from dilute aqueous solution with isopropyl ether
NTU= 5.53
K= 0.461 kg/m3-s
delta Ylm= 0.0036
a wetted-wall columb is used for absorbing sulfur dioxide from air by means of caustic soda solution
v= 1.73m/s kG= 7.56 x 10^-4 kg/m2s(kpa)
a granular material containing 40% moisturr is fed to a countercurrent rotart dryer
G= 2.07 kg/s H= 0.0284
0.126kg/s of a solid product containing 4 percent water
Qair= 3.16 m3/s Q= 276 kW Vair required= 0.66m3/s Qpreheater= 31kW Qtotal= 242kW
a mixture of water and ethyl alcohol containing 0.16 mole fraction alcohol
8 plates
4th plate from the top
D=13.55
W=78.45
it is desired to separate 1 kg/s of an ammonia 30%NH3
9 plates
Qboiler= 617kW
quartz of density 2650kg/m3
0.0103 - 0.0126 mm
a centrifuge with a phosphor bronze basket, 380mm in diameter
Pc= 2.42 x10^6 pa t= 15.1 mm
a slurry containing 100kg of whiting
Vcake/Vfiltrate= 0.0569
optimum frame thickness = 70mm
frame thickness= 60mm
glass spheres are fluidized with water
e= 0.755 density= 1367 kg/m3 p= 3605 N/m2/m
what is the yield of sodium acetate crystals from vacuum crystallizer
C=0.18kg/s
choose a bucket elevator to handle 150 tons/hr
continuous bucket elevator h= 80ft P= 24hp Belt conveyor Pempty= 7.2hp Pload= 7.425hp Pc= 14.03hp
a single effect evaportaor is to concentrate 200001b/hr of 20% solution NaOH
S=15400lb/hr
SE= 0.78
heating surface= 930 ft2
a hollow fiber permeater with do=300um
concentration polarization= 0.068
ave. velocity= 0.425 m/s
for the permeator of previous provlnlem estimate exit velocity
v= 0.425m/s
delta P= 5.03 atm
delta p= 1.26 atm
an acid solution containing 2% by mass of NaNO3 strong acid resin
20%
aqueous suspension consisting of particles of density 2500kg/m3 centrifuge with a basket
w= 503 rad/s Re= 0.46 t= 19.36s
investigate the use of gasketed plate heat exchanger
A= 72.92m2
n= 97 plates
methanol channel v= 0.51m/s
brackish water channel v= 0.96m/s
