he major objective of a roasting process is to eliminate the Sulphur contained in the concentrate and to provide a calcine. In a roasting plant, 1000 kg per hour of molybdenum(IV) sulphide (MoS2) is roasted with 25 % excess air to obtain MoO3 calcine in a chamber-type roasting furnace. Preheated air enters the reactor at 400 K while MoS2 enters at room temperature. After the process, the waste gases leave the reactor at 1000 K, and the calcine leaves at 850 K. a) Draw process flowsheet and heat balance diagram (ref. temp is 298 K) b) Calculate the amount of off-gas per hour in moles. c) Calculate the amount of calcined MoO3 per hour in kg.
he major objective of a roasting process is to eliminate the Sulphur contained in the concentrate and to provide a calcine. In a roasting plant, 1000 kg per hour of molybdenum(IV) sulphide (MoS2) is roasted with 25 % excess air to obtain MoO3 calcine in a chamber-type roasting furnace. Preheated air enters the reactor at 400 K while MoS2 enters at room temperature. After the process, the waste gases leave the reactor at 1000 K, and the calcine leaves at 850 K. a) Draw process flowsheet and heat balance diagram (ref. temp is 298 K) b) Calculate the amount of off-gas per hour in moles. c) Calculate the amount of calcined MoO3 per hour in kg.
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section5.5: Enthalpy Changes For Chemical Reactions
Problem 1RC: 1. For the reaction 2 Hg(l) + O2(g) → 2 HgO(s), ∆rH° = 181.6 kJ/mol-rxn. What is the enthalpy change...
Related questions
Question
- The major objective of a roasting process is to eliminate the Sulphur contained in the concentrate and
to provide a calcine. In a roasting plant, 1000 kg per hour of molybdenum(IV) sulphide (MoS2) is roasted
with 25 % excess air to obtain MoO3 calcine in a chamber-type roasting furnace. Preheated air enters
the reactor at 400 K while MoS2 enters at room temperature. After the process, the waste gases leave
the reactor at 1000 K, and the calcine leaves at 850 K.
a) Draw process flowsheet and heat balance diagram (ref. temp is 298 K)
b) Calculate the amount of off-gas per hour in moles.
c) Calculate the amount of calcined MoO3 per hour in kg.
![Supplemental:
Mo=95.95 g/mol
S= 32.06 g/mol
O=16 g/mol
N=14 g/mol
AHMos2,298K = -276.14 kj/mol
AHMO03,298K = -745.1 kj/mol
AHsozle),298K = -296.8 kj/mol
Mean value of Cp 02 = 30.10 J/mol*K
Mean value of Cp n2 = 29.05 J/mol*K
[H°so K - H°298 K]Mo03 = 20.24 kJ/mol
Mean value of Cp so2 = 47 J/mol*K
SO2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5c6bd4da-2604-45da-a86a-cb2f5a84b5f1%2Fb5f07f70-ed62-4ce3-bcc0-7cb656a97361%2F6qp87s_processed.png&w=3840&q=75)
Transcribed Image Text:Supplemental:
Mo=95.95 g/mol
S= 32.06 g/mol
O=16 g/mol
N=14 g/mol
AHMos2,298K = -276.14 kj/mol
AHMO03,298K = -745.1 kj/mol
AHsozle),298K = -296.8 kj/mol
Mean value of Cp 02 = 30.10 J/mol*K
Mean value of Cp n2 = 29.05 J/mol*K
[H°so K - H°298 K]Mo03 = 20.24 kJ/mol
Mean value of Cp so2 = 47 J/mol*K
SO2
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 5 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781133949640
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:
OpenStax
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781133949640
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:
OpenStax
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
Chemistry: An Atoms First Approach
Chemistry
ISBN:
9781305079243
Author:
Steven S. Zumdahl, Susan A. Zumdahl
Publisher:
Cengage Learning