Exercise 1It is desired to reduce the 2% CO, in 23 Ib/sec of a natural gas stream usingabsorption in aqueous diethylamine flowing at 40 lb/sec. Either 1 ½ in.Raschig rings or 1 ½ in. Pall rings are being considered for packing. Apressure drop of 0.25 in H,O/ft is desired to minimize foaming. Underoperating conditions, the densities of the gas and the liquid are 2.8 and 63Ib/ft³, respectively; the liquid viscosity is 2 centistokes."Determine the flooding velocity and the tower's cross-sectional area usingthe succeeding procedures Determination of Flooding VelocityProcedure1. Obtain liquid density (pL) and viscosity(H), gas density(pg) and packing factor(Fp)2. Calculate the ratio of flow of entering liquid to entering gas (L/G) from problemdata.3. Calculate FLG= (L/G)(p_/Pg)0.54. Obtain Souders-Brown coefficient Cs from Fig. 14-48/14-41 (HB) using FLG andpressure drop of 1.5 in Hg5. Solve Uf=Cs[(PL-PG/(PL Fp)]0-5[PL/H]0.05using appropriate units in the HB6. Gp= UFPG

1. Qg=G=23 lb/sec ................flow rate of gas 2. QL=L=40 lb/sec ................flow rate of…

Answered: It is desired to reduce the 2% CO2 in…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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1. Based on the following figure, answer the following questions : (a) How many actual trays are present if there is a partial condenser and reboiler? Are the top and bottom products a liquid or vapor? (b) What is the vapor and liquid molar fractions at the third tray? (c) At what tray is the feed placed? Is it above or below that tray? 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 0.1 0.2 1-Pentene/1-Hexene 0.3 0.4 0.5 14.7 psia 0.6 0.7 0.8 ||||||||||| 0.9 1
A petroleum gas mixture containing 65% propane, 25% of propylene and 10% of butane (mole percent) is burned with with 40% excess air. All the butane and propylene are consumed and 90% of the propane. There is no CO in the outlet gas. Calculate the composition of the flue gases on a dry basis, assuming that the moisture content of the air is negligible
In the process of drying carrots using a parallel flow drying system, the material with a moisture content of 85% enters the drying system at a rate of 500 Kg / hour to produce dry carrots with a moisture content of 20%. If it is known that hot air used as the drying medium has a humidity ratio of 0.006 Kg of water per Kg of dry air and the flow of hot air enters the system at a rate of 200 Kg of air for each dry matter produced, calculate the ratio of humidity to air leaving the system assuming that the system is under steady state conditions.
28.21 A 1 x 10-2 m spherical pellet is sprayed with a very thin coat of paint. The paint contains a volatile solvent. To dry the pellet, a 300 K and 1.013 × 105 Pa air stream flows around it with a bulk velocity of 1 m/s. The estimated loading of the solvent in the wet paint is 0.12 g solvent/cm³. Physical properties are vapor pressure of the solvent = 1.27 x 104 Pa mass diffusivity of solvent in air = 9.62 x 10-6 m²/s kinematic viscosity of air density of air = 1.569 x 10-5 m²/s = 1.177 kg/m³ thermal conductivity of air thermal diffusivity of air heat capacity of air = 2.624 x 10-2 J/m.s. K = 2.216 x 10-5 m²/s = 1.006 J/g. K = 78 g/g mole molecular weight of the solvent Use the McAdam's¹¹ equation Nu = 0.37(Redp) 0.6 (Pr) 1/3, where Redp dp vx V to evaluate (a) the heat-transfer coefficient, h; (b) the mass-transfer coefficient, ke; (c) the molar flux of the solvent into the air stream.
Find the percent ionization of a 0.250 M HC2H3O2 solution at 25 °C.
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