A single-effect evaporator concentrates9090 kg/hour herbal extract from 12% to 20% solids. Feed enters at 300 K and product loss with vapor is negligible. Find product flow, in integer kg/hour.
Nonvolatile solids are conserved. Feed solids rate is $9090(.12)=1090.8$ kg/hour. If product flow is P,$.20P=1090.8$,so **P=5454 kg/hour**. The remainder3636 kg/hour is evaporated water; inlet temperature is unnecessary for this mass balance.
More Evaporation and Drying questions
GATE 2024 AG Q63– Mango pulp initially 25°C and 70% wet-basis moisture is dried to 10% wet basis using95°C…
GATE 2023 AG Q33– A fluidized carrot bed has minimum-fluidization height 1.20 m, diameter .60 m, carrot…
GATE 2022 AG Q32– A forward-feed triple-effect evaporator takes pineapple juice at 6.3 kg/s and produces 50%…
GATE 2022 AG Q33– An osmo-dehydrated fruit slice has 72% moisture on wet basis. Find moisture on dry basis…
GATE 2022 AG Q62– Parboiled paddy dries from free moisture .40 to .02 kg water/kg dry solid. Dry solids99.8…
GATE 2022 AG Q65– A dryer recycles10 m³/s exhaust at 70°C,30% RH, humidity ratio .06335 kg/kg dry air. It…