Q3 ( The present study concerns a process in which a liquid is transferred from a storage tank to a distillation column via a centrifugal pump. The pipeline utilized in the transfer process is a commercial steel pipe with an internal diameter of 80 mm and a length of 100 m. The pipeline is subject to miscellaneous losses, which are estimated to be equivalent to 600 pipe diameters. The storage tank operates at atmospheric pressure, whereas the distillation column operates at 2.7 bar. The pump inlet is located 1.5 m below the lowest liquid level in the storage tank, and the feed point to the column is 3 m above the pump inlet. The flow rate in the pipeline is controlled by a plug-disk globe valve, which is initially assumed to be fully open. However, it is of interest to determine the range of flow rates that can be obtained by throttling the valve down to a quarter open position. Additionally, the fraction of pump work lost across the valve at a quarter open position is of concern. To further analyze this process, the operating point and pump efficiency need to be determined. The properties of the fluid being transferred are as follows: density of 900 kg/m³ and viscosity of 1.36 mN m²s.
Q3 ( The present study concerns a process in which a liquid is transferred from a storage tank to a distillation column via a centrifugal pump. The pipeline utilized in the transfer process is a commercial steel pipe with an internal diameter of 80 mm and a length of 100 m. The pipeline is subject to miscellaneous losses, which are estimated to be equivalent to 600 pipe diameters. The storage tank operates at atmospheric pressure, whereas the distillation column operates at 2.7 bar. The pump inlet is located 1.5 m below the lowest liquid level in the storage tank, and the feed point to the column is 3 m above the pump inlet. The flow rate in the pipeline is controlled by a plug-disk globe valve, which is initially assumed to be fully open. However, it is of interest to determine the range of flow rates that can be obtained by throttling the valve down to a quarter open position. Additionally, the fraction of pump work lost across the valve at a quarter open position is of concern. To further analyze this process, the operating point and pump efficiency need to be determined. The properties of the fluid being transferred are as follows: density of 900 kg/m³ and viscosity of 1.36 mN m²s.
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:Q3 (
The present study concerns a process in which a liquid is transferred from a storage tank to a distillation
column via a centrifugal pump. The pipeline utilized in the transfer process is a commercial steel pipe with
an internal diameter of 80 mm and a length of 100 m. The pipeline is subject to miscellaneous losses, which
are estimated to be equivalent to 600 pipe diameters. The storage tank operates at atmospheric pressure,
whereas the distillation column operates at 2.7 bar. The pump inlet is located 1.5 m below the lowest liquid
level in the storage tank, and the feed point to the column is 3 m above the pump inlet. The flow rate in the
pipeline is controlled by a plug-disk globe valve, which is initially assumed to be fully open. However, it is
of interest to determine the range of flow rates that can be obtained by throttling the valve down to a quarter
open position. Additionally, the fraction of pump work lost across the valve at a quarter open position is of
concern. To further analyze this process, the operating point and pump efficiency need to be determined.
The properties of the fluid being transferred are as follows: density of 900 kg/m³ and viscosity of 1.36 mN
m²s.
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