Question

Problem 3 An Absorber, packed to the height of 4.5 m, has been designed to reduce the concentration level of a mercaptan pollutant in an exhausted gas stream from 5 to 0.3 mole %. A nonvolatile, mercaptan-free solvent stream is fed to the top of the tower and flows counter current to the 0.236 m s of the exhausted gas stream. The solvent leaves the bottom of the tower containing 3.05 mole % mercaptan. At the pressure and temperature of the tower, 293 K, and 1.013X10 Pa, the equilibrium data for the mercaptan-solvent system are as follows: 0.01 0.02 0.03 0.04 mole- Mercaptan mole-mercap tan-freesolvent mole- Mercap tan mole-mercap tan-free-Air 0.0045 0.0145 0.0310 0.0545 Determine the overall mass transfer capacity coefficient Kya by the use of the numerical or graphical integration and determine the diameter if the tower is packed with 1 inch Berl Saddles and the gas pressure drop within the packing is limited to 300 N/m of packing. The gas enters the tower with an average molecular weight of 180 and viscosity of 3 X 10Pa.s and a specific gravity of 0.81.

Answer 1

Absorber ht: 4.5m. 031 si with 0377 70 (Marsaptain) Hola a koy the Ey -0 S ouley kys 9-16 0.92399 1 33) amit capacity cofficient = 1016, adaya Kaya = 100) A 6. G-01 098 299.00 Sameter 4 porting cp=fgn y densiya 810 Ag/m op- 3000/ yout 30 V- Slope Rana 0:0545 +0u5 Y=1661X X-mole ~Moreoptan o Trae ref captus u ert True reprez- Y-8-es 00215 Y = 0.0536 000 % D: 0-90 ,-0. lng a coft mit T = 2936 P1013kosta, 1:413 4105 41-236 = NXP:34x 293 159.814 madhe lopt tons of mells log = 9.814 malls, a fit string of you. As flight aftwith a H10 ANTO by 6*(1-) - 9.fu{) = 9.7648 Cy976 128x4x 3x3x0.236 By w ays Pynet 344x300 88 90o = 128x4x de 9 do d = 0.7690 = 0.220 drameter of tower = 0.2727 d. they too Ito - A To Arputzal bieden Obu A Prek 2ows y 1152 = 571 Nwe Wrong M-PC +03 TEOTY NTU-4-874 ja ru n t 46 - 0932. | [14.