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1. In an acetone recovery process, acetone is recovered from an air stream by absorbing it with water in an absorber (air is assumed insoluble in water). The air stream (95 wt% air, 3 wt% acetone and 2 wt% water) is fed to the bottom side of the absorber at a rate of 1000 kg/h, and leaves from the top side of the absorber with 0.5 wt% water and 0 wt% acetone. Pure water is fed to the top side of the absorber and leaves from the bottom side with 19 wt% acetone. This water stream is fed to a distillation column to separate acetone from water. The wt% of acetone in the top and bottom streams of the distillation column are 99% and 4% respectively. Draw a flowchart for the process (label all streams) and calculate the mass flow rates of ALL unknown streams.

1. In an acetone recovery process, acetone is recovered from an air stream by absorbing it with water in an absorber (air is assumed insoluble in water). The air stream (95 wt% air, 3 wt% acetone and 2 wt% water) is fed to the bottom side of the absorber at a rate of 1000 kg/h, and leaves from the top side of the absorber with 0.5 wt% water and 0 wt% acetone. Pure water is fed to the top side of the absorber and leaves from the bottom side with 19 wt% acetone. This water stream is fed to a distillation column to separate acetone from water. The wt% of acetone in the top and bottom streams of the distillation column are 99% and 4% respectively. Draw a flowchart for the process (label all streams) and calculate the mass flow rates of ALL unknown streams.

Introduction to Chemical Engineering Thermodynamics
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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1. In an acetone recovery process, acetone is recovered from an air stream by absorbing it with water in an absorber (air is assumed insoluble in water). The air stream (95 wt% air, 3 wt% acetone and 2 wt% water) is fed to the bottom side of the absorber at a rate of 1000 kg/h, and leaves from the top side of the absorber with 0.5 wt% water and 0 wt% acetone. Pure water is fed to the top side of the absorber and leaves from the bottom side with 19 wt% acetone. This water stream is fed to a distillation column to separate acetone from water. The wt% of acetone in the top and bottom streams of the distillation column are 99% and 4% respectively. Draw a flowchart for the process (label all streams) and calculate the mass flow rates of ALL unknown streams.
Transcribed Image Text:1. In an acetone recovery process, acetone is recovered from an air stream by absorbing it with water in an absorber (air is assumed insoluble in water). The air stream (95 wt% air, 3 wt% acetone and 2 wt% water) is fed to the bottom side of the absorber at a rate of 1000 kg/h, and leaves from the top side of the absorber with 0.5 wt% water and 0 wt% acetone. Pure water is fed to the top side of the absorber and leaves from the bottom side with 19 wt% acetone. This water stream is fed to a distillation column to separate acetone from water. The wt% of acetone in the top and bottom streams of the distillation column are 99% and 4% respectively. Draw a flowchart for the process (label all streams) and calculate the mass flow rates of ALL unknown streams.
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