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Chemical Plant Cost Estimation

This document outlines 5 problems to solve using CAPCOST software. The problems include: 1) Determining the bare module, total module, and grassroots cost of a toluene hydrodealkylation plant and ethylbenzene plant. 2) Determining the bare module cost of a 1-shell pass, 2-tube pass heat exchanger with specified operating conditions and materials of construction. 3) Repeating problem 2 but reversing the shell-side and tube-side fluids. 4) Determining the purchased cost and bare module cost of a distillation column separating toluene and xylene. 5) Determining the bare module cost of a similar column separating various chemical mixtures including

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267 views2 pages

Chemical Plant Cost Estimation

This document outlines 5 problems to solve using CAPCOST software. The problems include: 1) Determining the bare module, total module, and grassroots cost of a toluene hydrodealkylation plant and ethylbenzene plant. 2) Determining the bare module cost of a 1-shell pass, 2-tube pass heat exchanger with specified operating conditions and materials of construction. 3) Repeating problem 2 but reversing the shell-side and tube-side fluids. 4) Determining the purchased cost and bare module cost of a distillation column separating toluene and xylene. 5) Determining the bare module cost of a similar column separating various chemical mixtures including

Uploaded by

Tessa_mtg
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Assignment-7

1. It is recommended that the following problems be solved using CAPCOST (use a value
of CEPCI = 500).
Determine the bare module, total module, and grassroots cost of the following.
(a) Toluene hydrodealkylation plant described in Chapter 1 (see Figures 1.3 and 1.5 and
Tables 1.5 and 1.7).
(b) Ethylbenzene plant described in Appendix B, project B.2.

2. Determine the bare module cost of a 1-shell pass, 2-tube pass (1-2) heat exchanger
designed for the following operating conditions:
Maximum operating pressure (tube side) = 30 barg
Maximum operating pressure (shell side) = 5 barg
Process fluid in tubes requires stainless steel MOC
Shell-side utility (cooling water) requires carbon steel MOC
Heat exchange area = 160 m2

3. Repeat Problem 2, except reverse the shell-side and tube-side fluids. Are your results
consistent with the heuristics for heat exchangers given in Chapter 11? Which heuristic is
relevant?

4. A distillation column is initially designed to separate a mixture of toluene and xylene at


around ambient temperature (say, 100°C) and pressure (say, 1 barg). The column has 20
stainless steel valve trays and is 2 m in diameter and 14 m tall. Determine the purchased
cost and the bare module cost using a CEPCI = 500.

5. A column with similar dimensions, number of trays, and operating at the same conditions
as given in Problem 18 is to be used to separate a mixture containing the following
chemicals. For each case determine the bare module cost using a CEPCI = 500.
a. 10% nitric acid solution
b. 50% sodium hydroxide solution
c. 10% sulfuric acid solution
d. 98% sulfuric acid solution
Hint: you may need to look for the relevant MOC for part (d) on the Internet or another
resource.

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