Answered: In a process plant handling benzene…

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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In a process plant handling benzene compounds, a vertical thermosyphon reboiler is used in a column distilling crude benzene at 1 bar. Steam is available at 20 bar with the column bottom pressure 1.2 bar. Boiling point of benzene is 180 °C at a pressure of 1.2 bar. Molecular weight of benzene is 78 kg/kmol. Critical temperature of benzene is 652 K. Latent heat of vaporization is 39,000 kJ/kmol. Saturation temperature of steam is 215 °C. Heat load is 700 kW and heat flux is 28,000 W/m2. Reboiler Configuration: Tubes are 25 m.m O.D and 20 m.m I.D of 2 m long with triangular pitch arrangement. Determine the following design parameters: i. Area required for reboiler & amount of vaporization per hour ii. Shell inside diameter with shell clearance of 34 m.m and number of tube passes =2. iii. Outlet pipe diameter of outlet pipe and state the assumption

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