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Methanol is produced by the following reaction: CO2 + 3H2 + CH:OH + H2O Fraction conversion in methanol reactor is 70% on once through the reactor. The methanol reactor effluent is cooled to condense all the methanol and water, with the non condensed gases recycle to methanol reactor feed. Because the fresh feed contains N2 as impurity a portion of the recycle stream must be purged as shown in the flow diagram. All composition on the flow sheet are in mole percent, and the H3 CO; ratio in recycle stream and purge is 3/1. a) How many moles of H2 are lost in purge. b) The recycle to purge ratio in Kmole Kmole c) How much methanol solution. (in Kg) Recycle H2, CO2, N2 Purge H2 CO: N2= 10% 1000 Kmole Methanol Condenser reactor Fresh feed COo= 20% Н0- 18% Methanol solution H= 60% N= 2%

Methanol is produced by the following reaction: CO2 + 3H2 + CH:OH + H2O Fraction conversion in methanol reactor is 70% on once through the reactor. The methanol reactor effluent is cooled to condense all the methanol and water, with the non condensed gases recycle to methanol reactor feed. Because the fresh feed contains N2 as impurity a portion of the recycle stream must be purged as shown in the flow diagram. All composition on the flow sheet are in mole percent, and the H3 CO; ratio in recycle stream and purge is 3/1. a) How many moles of H2 are lost in purge. b) The recycle to purge ratio in Kmole Kmole c) How much methanol solution. (in Kg) Recycle H2, CO2, N2 Purge H2 CO: N2= 10% 1000 Kmole Methanol Condenser reactor Fresh feed COo= 20% Н0- 18% Methanol solution H= 60% N= 2%

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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Material and energy balance
Methanol is produced by the following reaction: CO2 + 3H2 CH:OH + H2O Fraction conversion in methanol reactor is 70% on once through the reactor. The methanol reactor effluent is cooled to condense all the methanol and water, with the non condensed gases recycle to methanol reactor feed. Because the fresh feed contains N2 as impurity a portion of the recycle stream must be purged as shown in the flow diagram. All composition on the flow sheet are in mole percent, and the H/CO2 ratio in recycle stream and purge is 3/1. a) How many moles of H2 are lost in purge. b) The recycle to purge ratio in Kmole Kmole c) How much methanol solution. (in Kg) Recycle H2, CO2, N2 Purge H2 CO2 N2= 10% 1000 Kmole Methanol Condenser reactor Fresh feed CO== 20% H2O= 18% Methanol solution H= 60% N= 2% Atomic weight: C=12, H=1, 0=16
Transcribed Image Text:Methanol is produced by the following reaction: CO2 + 3H2 CH:OH + H2O Fraction conversion in methanol reactor is 70% on once through the reactor. The methanol reactor effluent is cooled to condense all the methanol and water, with the non condensed gases recycle to methanol reactor feed. Because the fresh feed contains N2 as impurity a portion of the recycle stream must be purged as shown in the flow diagram. All composition on the flow sheet are in mole percent, and the H/CO2 ratio in recycle stream and purge is 3/1. a) How many moles of H2 are lost in purge. b) The recycle to purge ratio in Kmole Kmole c) How much methanol solution. (in Kg) Recycle H2, CO2, N2 Purge H2 CO2 N2= 10% 1000 Kmole Methanol Condenser reactor Fresh feed CO== 20% H2O= 18% Methanol solution H= 60% N= 2% Atomic weight: C=12, H=1, 0=16
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