Assignment:
Consider the hollow-fiber BFW deaerator described in question. If the water flow rate increases to 60,000 kg/h while everything else remains constant, calculate the fraction of the entering dissolved oxygen that can be removed
Q1. Boiler feed water (BFW) must be deareated to avoid corrosion problems in the boilers. Hollow fibers made of microporous polypropylene can be used for very fast removal of dissolved oxygen from water, therefore making a compact BFW deaerator possible (Yang and Cussler, 1986). For a given boiler, 40,000 kg/h of BFW is needed. Design a hollow-fiber membrane module for that purpose, assuming that the unit is capable of removing 99% of the dissolved oxygen present in natural waters at 298 K.
Provide complete and step by step solution for the question and show calculations and use formulas.