A fresh stream of pure ethane(C2H6) combined with a recycle stream are fed to a combustion chamber and burned with excess air. The gas mixture exiting the chamber is fed to a filter where 70% of the ethane is removed and recycled to the reactor inlet. The stack gas removed from the filter contains 10.1% O2, 4.5% CO2, 1.5% CO, 0.3% ethane and balanced N2 and H2O. Calculate recycle ratio (moles of recycle/moles of fresh feed), conversion of ethane in combustion chamber, percentage of excess for air (%excess) and the molar composition of the stack gas leaving the filter.

The basis of the calculation is taken as 100 mol of the stack gas. Stack gas composition: 10.1% O2,…

Answered: A fresh stream of pure ethane(C2H6)…

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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A fresh stream of pure ethane(C₂H₆) combined with a recycle stream are fed to a combustion chamber and burned with excess air. The gas mixture exiting the chamber is fed to a filter where 70% of the ethane is removed and recycled to the reactor inlet. The stack gas removed from the filter contains 10.1% O₂, 4.5% CO₂, 1.5% CO, 0.3% ethane and balanced N₂ and H₂O. Calculate recycle ratio (moles of recycle/moles of fresh feed), conversion of ethane in combustion chamber, percentage of excess for air (%excess) and the molar composition of the stack gas leaving the filter.

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