A tanker carrying toluene is unloaded, using the ship’s pumps, to an on-shore storage tank. The pipeline is 225 mm internal diameter and 900 m long. Miscellaneous losses due to fittings, valves, etc., amount to 600 equivalent pipe diameters. The maximum liquid level in the storage tank is 30 m above the lowest level in the ship’s tanks. The ship’s tanks are nitrogen blanketed and maintained at a pressure of 1.05 bar. The storage tank has a floating roof, which exerts a pressure of 1.1 bar on the liquid. The ship must unload 1000 tonne within 5 hours to avoid demurrage charges. Estimate the power required by the pump. Take the pump efficiency as 70 per cent. Physical properties of toluene: density 874 kg/m3, viscosity 0.62 mNm-2s
A tanker carrying toluene is unloaded, using the ship’s pumps, to an on-shore storage tank. The pipeline is 225 mm internal diameter and 900 m long. Miscellaneous losses due to fittings, valves, etc., amount to 600 equivalent pipe diameters. The maximum liquid level in the storage tank is 30 m above the lowest level in the ship’s tanks. The ship’s tanks are nitrogen blanketed and maintained at a pressure of 1.05 bar. The storage tank has a floating roof, which exerts a pressure of 1.1 bar on the liquid. The ship must unload 1000 tonne within 5 hours to avoid demurrage charges. Estimate the power required by the pump. Take the pump efficiency as 70 per cent. Physical properties of toluene: density 874 kg/m3, viscosity 0.62 mNm-2s
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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Chemical Engineering department
A tanker carrying toluene is unloaded, using the ship’s pumps, to an on-shore storage
tank. The pipeline is 225 mm internal diameter and 900 m long. Miscellaneous losses due
to fittings, valves, etc., amount to 600 equivalent pipe diameters. The maximum liquid
level in the storage tank is 30 m above the lowest level in the ship’s tanks. The ship’s
tanks are nitrogen blanketed and maintained at a pressure of 1.05 bar. The storage tank
has a floating roof, which exerts a pressure of 1.1 bar on the liquid.
The ship must unload 1000 tonne within 5 hours to avoid demurrage charges. Estimate
the power required by the pump. Take the pump efficiency as 70 per cent.
Physical properties of toluene: density 874 kg/m3, viscosity 0.62 mNm-2s
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