A mixture that contains 46 wt% acetone (CH;COCH,), 27% acetic acid (CH,COOH), and 27%acetic anhydride [(CH,CO);0] is distilled at 1 atm. The feed enters the distillation column at 348 K at a rate of 15,000 kg/h. The distillate (overhead product) is essentially pure acetone, and the bottoms product contains 1% of the acetone in the feed. The vapor effluent from the top of the column enters a condenser at 329 K and emerges as a liquid at 303 K. Half of the condensate is withdrawn as the overhead product, and the remainder is refluxed back to the column. The liquid leaving the bottom of the column goes into a steam-heated reboiler, in which it is partially vaporized. The vapor leaving the reboiler is returned to the column at a temperature of 398 K, and the residual liquid, also at 398 K, constitutes the bottoms producet. A flowchart of the process and thermodynamic data for the process materials follow. a) Calculate the molar flow rates and compositions of the product streams. b) Calculate the condenser cooling requirement (kJ/h). Given that Cp for Acetone ()= 2.3 KJ/Kg.K, AH; = 2 = h, = 520.6 KJ/ kg Acetone boiling point=56 °C=329 K Column overhead Acctone ), 329 K CONDENSER Distillate croduct Acstone (0, 303 K Feed 15,000 kgh DISTILLATION COLUMN 46 wt% acetone 27 wts acetic acid t) 27 wt acetic anhydride (D 348 K Vapor. 3.2 molek acctone, 73.8 molek acetic ecid, 23.0 mole% ecetic enhydride 398 K REBOILER Buttoms praduct 1% of acetore in feed +cetic acid cetie anhydride 398 K
A mixture that contains 46 wt% acetone (CH;COCH,), 27% acetic acid (CH,COOH), and 27%acetic anhydride [(CH,CO);0] is distilled at 1 atm. The feed enters the distillation column at 348 K at a rate of 15,000 kg/h. The distillate (overhead product) is essentially pure acetone, and the bottoms product contains 1% of the acetone in the feed. The vapor effluent from the top of the column enters a condenser at 329 K and emerges as a liquid at 303 K. Half of the condensate is withdrawn as the overhead product, and the remainder is refluxed back to the column. The liquid leaving the bottom of the column goes into a steam-heated reboiler, in which it is partially vaporized. The vapor leaving the reboiler is returned to the column at a temperature of 398 K, and the residual liquid, also at 398 K, constitutes the bottoms producet. A flowchart of the process and thermodynamic data for the process materials follow. a) Calculate the molar flow rates and compositions of the product streams. b) Calculate the condenser cooling requirement (kJ/h). Given that Cp for Acetone ()= 2.3 KJ/Kg.K, AH; = 2 = h, = 520.6 KJ/ kg Acetone boiling point=56 °C=329 K Column overhead Acctone ), 329 K CONDENSER Distillate croduct Acstone (0, 303 K Feed 15,000 kgh DISTILLATION COLUMN 46 wt% acetone 27 wts acetic acid t) 27 wt acetic anhydride (D 348 K Vapor. 3.2 molek acctone, 73.8 molek acetic ecid, 23.0 mole% ecetic enhydride 398 K REBOILER Buttoms praduct 1% of acetore in feed +cetic acid cetie anhydride 398 K
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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![A mixture that contains 46 wt% acetone (CH,COCH), 27% acetic acid
(CH3COOH), and 27%acetic anhydride [(CH3C0),0] is distilled at 1 atm. The
feed enters the distillation column at 348 K at a rate of 15,000 kg/h. The distillate
(overhead product) is essentially pure acetone, and the bottoms product contains
1% of the acetone in the feed. The vapor effluent from the top of the column
enters a condenser at 329 K and emerges as a liquid at 303 K. Half of the
condensate is withdrawn as the overhead product, and the remainder is refluxed
back to the column. The liquid leaving the bottom of the column goes into a
steam-heated reboiler, in which it is partially vaporized. The vapor leaving the
reboiler is returned to the column at a temperature of 398 K, and the residual
liquid, also at 398 K, constitutes the bottoms product. A flowchart of the process
and thermodynamic data for the process materials follow.
a) Caleulate the molar flow rates and compositions of the product streams.
b) Calculate the condenser cooling requirement (kJ/h).
Given that Cp for Acetone ()= 2.3 KJ/Kg.K, AH, = 2 = h, = 520.6 KJ/ kg
Acetone boiling point=56 °C=329 K
Column overhead
Acetone (v), 32g K
CONDENSER8
Distillate product
Acetone (1), 303 K
Feed 15,000 kgh
DISTILLATION
COLUMN
46 wt% acctone )
27 wt% acetic acid ()
27 w% acetic anhydride (1)
348 K
Vopor. 3.2 mole% acctone, 73.8 mole% ocetic acid,
23.0 mole% acetic anhydride
398 K
REBOILER
Bottoms product (I
1% of acetone in feed
+ acetic acid
+ acetic anhydride
398 K](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F20870adb-02a2-4dae-b464-dcdc7f1ef55e%2F062f8c2a-e82f-4d01-8772-db0d704a67ce%2F29muphq_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A mixture that contains 46 wt% acetone (CH,COCH), 27% acetic acid
(CH3COOH), and 27%acetic anhydride [(CH3C0),0] is distilled at 1 atm. The
feed enters the distillation column at 348 K at a rate of 15,000 kg/h. The distillate
(overhead product) is essentially pure acetone, and the bottoms product contains
1% of the acetone in the feed. The vapor effluent from the top of the column
enters a condenser at 329 K and emerges as a liquid at 303 K. Half of the
condensate is withdrawn as the overhead product, and the remainder is refluxed
back to the column. The liquid leaving the bottom of the column goes into a
steam-heated reboiler, in which it is partially vaporized. The vapor leaving the
reboiler is returned to the column at a temperature of 398 K, and the residual
liquid, also at 398 K, constitutes the bottoms product. A flowchart of the process
and thermodynamic data for the process materials follow.
a) Caleulate the molar flow rates and compositions of the product streams.
b) Calculate the condenser cooling requirement (kJ/h).
Given that Cp for Acetone ()= 2.3 KJ/Kg.K, AH, = 2 = h, = 520.6 KJ/ kg
Acetone boiling point=56 °C=329 K
Column overhead
Acetone (v), 32g K
CONDENSER8
Distillate product
Acetone (1), 303 K
Feed 15,000 kgh
DISTILLATION
COLUMN
46 wt% acctone )
27 wt% acetic acid ()
27 w% acetic anhydride (1)
348 K
Vopor. 3.2 mole% acctone, 73.8 mole% ocetic acid,
23.0 mole% acetic anhydride
398 K
REBOILER
Bottoms product (I
1% of acetone in feed
+ acetic acid
+ acetic anhydride
398 K
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