Propionic acid is to be produced by reacting sodium propionate with hydrochloric acid according to the elementary, liquid-phase reaction: C₂H5COONa+HCI C₂H5COOH + NaCl Molar Masses: 96 74 This reaction is second order and reversible. The reaction was carried out in a pilot scale batch. reactor. Equimolar quantities of sodium propionate and hydrochloric acid were added such that the concentration of each species was 2.7 gmol/L. The data shown in the table below were obtained from sampling the pilot scale batch reactor at different times i.e. Time (min) 0 10 20 30 % conversion of C2H5COONa 0 39 55 64 36.5 50 73 ∞0 80 (a) Determine the value of the equilibrium constant Kc. (b) Determine the value of the rate constant k. Hint: Draw a graph and determine k from the slope. (c) The reaction is to be carried out in the plant scale batch reactor at the same conditions as the pilot scale reactor. For the plant scale reactor the initial concentration of sodium propionate will be 323 kg/m³ and that of hydrochloric acid 123.4 kg/m³. An average density of approximately 1199 kg/m³ may be assumed for design purposes. The estimated turnaround time for charging the reactor, heating to reaction temperature, cooling after the reaction, and discharging the reactor contents will be an additional 45 minutes. A final reactor conversion of 75% is required. Determine the volume of the plant scale batch reactor required to produce 1360 kg/h of propionic acid.

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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Propionic acid is to be produced by reacting sodium propionate with hydrochloric acid according
to the elementary, liquid-phase reaction:
C₂H5COONa+ HCI → C₂H5COOH + NaCl
36.5
Molar Masses:
96
74
This reaction is second order and reversible. The reaction was carried out in a pilot scale batch
reactor. Equimolar quantities of sodium propionate and hydrochloric acid were added such that
the concentration of each species was 2.7 gmol/L. The data shown in the table below were
obtained from sampling the pilot scale batch reactor at different times i.e.
Time (min)
0
10
20
30
50
00
% conversion of C2H5COONa
0
39
55
64
73
80
(a) Determine the value of the equilibrium constant Kc.
(b) Determine the value of the rate constant k.
Hint: Draw a graph and determine k from the slope.
(c) The reaction is to be carried out in the plant scale batch reactor at the same conditions as
the pilot scale reactor. For the plant scale reactor the initial concentration of sodium
propionate will be 323 kg/m³ and that of hydrochloric acid 123.4 kg/m³. An average density of
approximately 1199 kg/m³ may be assumed for design purposes.
The estimated turnaround time for charging the reactor, heating to reaction temperature,
cooling after the reaction, and discharging the reactor contents will be an additional 45
minutes. A final reactor conversion of 75% is required.
Determine the volume of the plant scale batch reactor required to produce 1360 kg/h of
propionic acid.
Transcribed Image Text:Propionic acid is to be produced by reacting sodium propionate with hydrochloric acid according to the elementary, liquid-phase reaction: C₂H5COONa+ HCI → C₂H5COOH + NaCl 36.5 Molar Masses: 96 74 This reaction is second order and reversible. The reaction was carried out in a pilot scale batch reactor. Equimolar quantities of sodium propionate and hydrochloric acid were added such that the concentration of each species was 2.7 gmol/L. The data shown in the table below were obtained from sampling the pilot scale batch reactor at different times i.e. Time (min) 0 10 20 30 50 00 % conversion of C2H5COONa 0 39 55 64 73 80 (a) Determine the value of the equilibrium constant Kc. (b) Determine the value of the rate constant k. Hint: Draw a graph and determine k from the slope. (c) The reaction is to be carried out in the plant scale batch reactor at the same conditions as the pilot scale reactor. For the plant scale reactor the initial concentration of sodium propionate will be 323 kg/m³ and that of hydrochloric acid 123.4 kg/m³. An average density of approximately 1199 kg/m³ may be assumed for design purposes. The estimated turnaround time for charging the reactor, heating to reaction temperature, cooling after the reaction, and discharging the reactor contents will be an additional 45 minutes. A final reactor conversion of 75% is required. Determine the volume of the plant scale batch reactor required to produce 1360 kg/h of propionic acid.
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