below summarizes the results obtained from the computer simulations table iv______________________________________run purpose______________________________________1 base case2 effect of increasing number of stages3 effect of increasing feed temperature for white liquor4 effect of decreasing white liquor feed rate5 effect of adjusting white liquor feed rate to meet specon methanol in overhead6 sup 1effect of lowering tower pressure7 sup 2effect of increasing the naoh concentration in the whiteliquor from 2 0 to 3 0 molar8 sup 2effect of adjusting white liquor feed rate to most specon methanol in overhead when naoh concentration inwhite liquor is 3 0 molar______________________________________ 1 in case 6 the use of a lower tower pressure had a positive effect on methanol retention however the amount of methyl mercaptan contained in the scrubbed gas stream was increased 2 in cases 7 and 8 increasing the amount of sodium hydroxide contained in the white liquor allowed one to dramatically increase the methanol contained in the scrubbed gas stream while also keeping trs gas levels low table v__________________________________________________________________________white liquor naoh no of tower p overhead gmoles hr retainedrun gmp t u00b0 c molar stages atm ch sub 4 s h sub 2 s meoh methanol__________________________________________________________________________1 29 0 100 0 2 0 3 1 0 1 37 0 01 6636 9 622.