Hydrogen sulfide is absorbed by a solution of methanolamine (MEA) in a packed column. At the top

Question:

Hydrogen sulfide is absorbed by a solution of methanolamine (MEA) in a packed column. At the top of the column, gas is at 20 atm and it contains 0.1% of H2S, while the absorbent contains 250 mol/m3 of free MEA. The diffusivity of MEA in solution is 0.64 times that of H2S. The reaction is normally regarded as irreversible and instantaneous.HS + RNH HS + RNH; (A) (B)

For the flow rates and packing usedKA = 0.03 S-1 kaga = 60 mol/m.s.atm HA = 1  10-4 m.atm/mol, Henry's law constant for HS in water.

(a) Find the rate of absorption of H,S in MEA solution.
(b) To find out whether it is worthwhile using MEA absorbent, determine how much faster is absorption with MEA compared to absorption in pure water. This problem was adapted from Danckwerts (1970).

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question
Question Posted: