Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Methanol is to be used as an entrainer in an azeotropic fractionator. Liquid ethanol is pumped from a storage tank on ground floor to a

Methanol is to be used as an entrainer in an azeotropic fractionator. Liquid ethanol is pumped from a storage tank on ground floor to a reactor on level 2 at height Z2 using a centrifugal pump. The lowest liquid level in the tank is not allowed to go below the height of Z1. Line segment L1 from the tank to the pump is a 3(1)/(2) inch schedule 40 commercial steel, and is 20 m long from the tank outlet to the pump inlet. This line segment has 3\times 90\deg standard long elbows and 1\times globe valve that is fully open. Line segment L2 from the pump outlet to the fractionator inlet is also a 3(1)/(2) inch schedule 40 commercial steel, and is 90 m long. The Segment L1 has 5\times 90\deg standard long elbows and 2\times globe valve that is fully open, 4\times gate valves (2\times fully open, 2\times (1)/(2) open). The tank and fractionator are both at atmospheric pressure. The flowrate of methanol is 24 tonnes/hr. Estimate the power required by the pump by performing the following steps:
a) Calculate the design static head of the system (head in m)[1]
b) Specify the piping dimensions of the system (ID and OD in mm)[3]
c) Provide the design flow specifications for the pump i.e. flowrate (m3/hr) and velocity (m/s)[4]
d) Calculate the dynamic head of the system (head in m)[8]
e) Calculate the power required by the pump motor [4]
f) If NPSH required by the pump is 6m, will the pump be able to do the required task? [5]
Z1=1 m, Z2=5 m, T =30\deg C. Take the pump efficiency as 70%.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Thermodynamics for Engineers

Authors: Kenneth A. Kroos, Merle C. Potter

1st edition

1133112862, 978-113311286

More Books

Students also viewed these Chemical Engineering questions