The ‘Squeaky Clean Domestic Chemicals Co.’ has another process onsite that is has been running for many years. This process produces 20 kg per hour of a coke residue (pure carbon) as a byproduct which is separated by a cyclone and sent to landfill. This process runs continuously 24 hours a day, 7 days a week, 365 days a year.The company uses natural gas to run a system of boilers to provide hot water at 90°C for many of its processes. A recent graduate joins the company and suggests that they might be wasting a valuable resource by simply disposing of the coke. Approximately how much could the company save by using combustion of the carbon to heat its process water given that the standard enthalpy of combustion of carbon is - 397 kJmol-1 and that the cost of natural gas (methane) is £0.12 kWh?

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
icon
Related questions
Question

The ‘Squeaky Clean Domestic Chemicals Co.’ has another process onsite that is has been running for many years. This process produces 20 kg per hour of a coke residue (pure carbon) as a byproduct which is separated by a cyclone and sent to landfill. This process runs continuously 24 hours a day, 7 days a week, 365 days a year.
The company uses natural gas to run a system of boilers to provide hot water at 90°C for many of its processes. A recent graduate joins the company and suggests that they might be wasting a valuable resource by simply disposing of the coke. Approximately how much could the company save by using combustion of the carbon to heat its process water given that the standard enthalpy of combustion of carbon is - 397 kJmol-1 and that the cost of natural gas (methane) is £0.12 kWh? 

Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The