A gas absorber has to be designed to handle 900 m3/hr of coal gas containing 2% benzene (by volume). Coal gas enters the absorber at a temperature of 300 K containing 0.005 mole fraction of benzene and has an average molecular weight of 260. You are asked to Calculate the circulation rate of solvent per second if the column is to be operated at 1.4 times the minimum value. The equilibrium relationship is given as where, Y and X are the mole ratios of benzene to dry gas and to solvent, respectively.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

Give three differences between corrosion of metals and the corrosion of ceramics? what is static fatigue?