D.) The propane is being combusted with 150% excess air. If all the propane is burned, write a ratio of Moles O, leaving combustor Moles C29H56 entering cracker
D.) The propane is being combusted with 150% excess air. If all the propane is burned, write a ratio of Moles O, leaving combustor Moles C29H56 entering cracker
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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Can you help me with part d?
Transcribed Image Text:Question 3: Inside a high-temperature hydrocarbon cracker, an equimolar mixture of
three high molecular weight hydrocarbons are being 'cracked,' or broken down into lower
molecular weight molecules suitable for use as liquid fuel. Propane (C3H3), a much shorter
hydrocarbon that exists as a gaseous species, is also produced as a byproduct. Gaseous
hydrocarbons are separated out from the remaining liquids (all other species) and then burned to
provide heat to the hydrocarbon cracker, undergoing incomplete combustion and yielding 12
times more CO2 than CO. Assume that 80% of the high molecular weight hydrocarbons are
cracked following the reactions shown below.
C29H56 → C3H8 + C3H18 + C10H16 + C3H14
C27H62 → C3H8 + 3C3H18
C44H78 → 2C3H3 + 3C10H16 + C3H14
A.) Draw and label a process flow diagram.
B.) Are moles conserved in the hydrocarbon cracker? Explain your answer
C.) Write all (balanced) chemical reactions that are occurring in the combustion process unit.
D.) The propane is being combusted with 150% excess air. If all the propane is burned, write a
ratio of
Moles O, leaving combustor
Moles C29H56 entering cracker
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