Assume that the high-temperature oxidation of an organic eol- vent in excess air can be modeled as an irreversible first-order reaction (r = -k Csolvent), Now, consider a mixture of the solvent in air coming from a paint-baking oven that flows at the rate of 20 m/s (at T = 150 °C and 1 atm), The stream flows into a ther- mał exidizer (total reactor volumne is 60 m) that you are modeling as two equal-volume CSTRS in series. In the first CSTR the tem- perature is 750 °C, but the temperature drops to 700 °C in the second CSTR. At 750 °C, the reaction rate constant k is 25 sec, and k follows the Arrhenius model with an activation energy of 45,000 cal/gmol. Calculate the final concentration of solvent (in ppm) given that the inlet concentration of solvent in air is 500 ppm by volume. You may ignore any change in gas volumetric flow due to the change in moles by reaction, but you must account for changes in flow rate due to temperature.
Assume that the high-temperature oxidation of an organic eol- vent in excess air can be modeled as an irreversible first-order reaction (r = -k Csolvent), Now, consider a mixture of the solvent in air coming from a paint-baking oven that flows at the rate of 20 m/s (at T = 150 °C and 1 atm), The stream flows into a ther- mał exidizer (total reactor volumne is 60 m) that you are modeling as two equal-volume CSTRS in series. In the first CSTR the tem- perature is 750 °C, but the temperature drops to 700 °C in the second CSTR. At 750 °C, the reaction rate constant k is 25 sec, and k follows the Arrhenius model with an activation energy of 45,000 cal/gmol. Calculate the final concentration of solvent (in ppm) given that the inlet concentration of solvent in air is 500 ppm by volume. You may ignore any change in gas volumetric flow due to the change in moles by reaction, but you must account for changes in flow rate due to temperature.
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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Assume that the high-temperature oxidation of an organic solvent in excess air can be modeled as an irreversible first-order reaction
Transcribed Image Text:Assume that the high-temperature oxidation of an organic eol-
vent in excess air can be modeled as an irreversible first-order
reaction (r = -k Csolvent), Now, consider a mixture of the solvent
in air coming from a paint-baking oven that flows at the rate of
20 m/s (at T = 150 °C and 1 atm), The stream flows into a ther-
mał exidizer (total reactor volumne is 60 m) that you are modeling
as two equal-volume CSTRS in series. In the first CSTR the tem-
perature is 750 °C, but the temperature drops to 700 °C in the
second CSTR. At 750 °C, the reaction rate constant k is 25 sec,
and k follows the Arrhenius model with an activation energy of
45,000 cal/gmol.
Calculate the final concentration of solvent (in ppm) given that
the inlet concentration of solvent in air is 500 ppm by volume.
You may ignore any change in gas volumetric flow due to the
change in moles by reaction, but you must account for changes
in flow rate due to temperature.
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