The document summarizes the components and cost factors involved in purchasing plate and packed towers for mass transfer equipment. The purchased cost can be divided into the shell cost, internals cost like trays and packing, and auxiliary costs. The purchased cost is calculated as the bare cost from figures multiplied by a material factor and pressure factor. Figures are provided showing examples of tray types and cross-sectional views of plate and packed towers.

1. Mass Transfer
Equipment Cost
Dr. K. Shahzad Baig
Memorial University of Newfoundland (MUN) Canada

2. Mass Transfer Equipment Cost
Plate and Packed Towers
The purchased cost for plate and packed towers can be divided into the following
components:
(1) cost for shell, including heads, skirts, manholes, and nozzles;
(2) cost for internals, including trays and accessories, packing, supports, and
distributor plates
(3) cost for auxiliaries, such as platforms, ladders, handrails, and insulation.

3. Figure 16.1
Cross
sectional
view of a
finite stage
contactor
tower
Showing
examples of
various types
of trays

4. Figure 16.14
Cross
sectional view
of packed
tower in
operation

5. Figure 6.5 (a,b)
Vertical pressure
vessels

6. 𝑷𝒖𝒓𝒄𝒉𝒂𝒔𝒆𝒅 𝒄𝒐𝒔𝒕 =
𝒃𝒂𝒓𝒆 𝒄𝒐𝒔𝒕 𝒇𝒓𝒐𝒎 𝒇𝒊𝒈𝒖𝒓𝒆 𝒙 𝑴𝒂𝒕𝒆𝒓𝒊𝒂𝒍 𝒇𝒂𝒄𝒕𝒐𝒓 𝒙 𝑷𝒓𝒆𝒔𝒔𝒖𝒓𝒆 𝒇𝒂𝒄𝒕𝒐𝒓

11. Following books were used in preparation of notes
 Blank, L., Tarquin. A. 2005. Engineering Economy. 6th Edition, McGraw-Hill.
 Eschenbach, T. G. 2003. Engineering Economy”, 2nd Edition, Oxford University Press
 Riggs, J. L., Bedworth, D. D., Randhawa, S. U. 1996. Engineering Economics”, 4th Edition, Tata McGraw-Hill.
 Riggs, J. L., West. T. M. 1986. Essentials of Engineering Economics”, 2nd Edition, McGraw-Hill.
 Peter, M. S., Timmerhaus, K. D. 1991. Plant Design and Economics for Chemical Engineers. 4th Edition, McGraw-Hill.