A simple atmospheric distillation tower as shown in the Figure below have a capacity of 1200 bbl/day. Steam vapor with flow rate of 567 Ib/hr at Temp. 535 F and (Cp=0.5) is supported blow the flash zone. Given the information in the Table below Latent Mol. Steam + Gasoline 286 Ib/hr Ср heat wt Reflux Gasoline 3415 0.56 120 110 Naphtha 754 0.55 113 155 Kerosene 2765 0.57 100 185 Naphta 335 F Kerosene 420 F Gas Oil 1530 0.59 90 240 Temp. Reduced Crude oil 600 F Gas oil 510 F 5610 0.72 576 F Crude Steam 535 F Loss 96 Crude Oil 14170 Reduced crude 510 F 1. Make a heat balance to determine the amount of heat that must be removed to keep the tower in thermal balance? 2. How many pounds of reflux are required if cold reflux at 80 F is used? 3. Calculate the correct temperature at the top of the tower using Claussius - Clapeyron eq. it the total pressure at top of the tower = 780 mmHg and the dew point of 100% Gasoline at 760 mmHg on the EFV curve is 296 F.?
A simple atmospheric distillation tower as shown in the Figure below have a capacity of 1200 bbl/day. Steam vapor with flow rate of 567 Ib/hr at Temp. 535 F and (Cp=0.5) is supported blow the flash zone. Given the information in the Table below Latent Mol. Steam + Gasoline 286 Ib/hr Ср heat wt Reflux Gasoline 3415 0.56 120 110 Naphtha 754 0.55 113 155 Kerosene 2765 0.57 100 185 Naphta 335 F Kerosene 420 F Gas Oil 1530 0.59 90 240 Temp. Reduced Crude oil 600 F Gas oil 510 F 5610 0.72 576 F Crude Steam 535 F Loss 96 Crude Oil 14170 Reduced crude 510 F 1. Make a heat balance to determine the amount of heat that must be removed to keep the tower in thermal balance? 2. How many pounds of reflux are required if cold reflux at 80 F is used? 3. Calculate the correct temperature at the top of the tower using Claussius - Clapeyron eq. it the total pressure at top of the tower = 780 mmHg and the dew point of 100% Gasoline at 760 mmHg on the EFV curve is 296 F.?
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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Transcribed Image Text:A simple atmospheric distillation tower as shown in the Figure below have a capacity of 1200
bbl/day. Steam vapor with flow rate of 567 Ib/hr at Temp. 535 F and (Cp=0.5) is supported
blow the flash zone. Given the information in the Table below
Steam + Gasoline 286
Latent Mol.
Cp
Ib/hr
heat
wt
Reflux
Gasoline
3415
0.56
120
110
Naphtha
754
0.55
113
155
Naphta 335 F
Kerosene
2765
0.57
100
185
Kerosene 420 F
Gas Oil
1530
0.59
90
240
Temp.
Reduced
Crude oil 600 F
Gas oil 510 F
5610
0.72
576 F
Crude
Steam 535 F
Loss
96
Crude Oil
14170
Reduced crude 510 F
1. Make a heat balance to determine the amount of heat that must be removed to keep the tower
in thermal balance?
2. How many pounds of reflux are required if cold reflux at 80 F is used?
3. Calculate the correct temperature at the top of the tower using Claussius - Clapeyron eq. if
the total pressure at top of the tower 780 mmHg and the dew point of 100% Gasoline at
760 mmHg on the EFV curve is 296 F.?
Petroleum refining
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