Page 249 - Analysis, Synthesis and Design of Chemical Processes, Third Edition

using the PFD in Figure 1.5 and the flow table given in Table 1.5.

A utility summary for all the equipment is given in Table E8.10, from which we find the total yearly utility
costs for this process:

Steam = $ 3,412,000/yr

Cooling Water = $ 165,000/yr

Fuel Gas = $2,771,000/yr

Electricity = $37,400/yr

Total Utilities = $6,385,000/yr

Raw Material Costs from the PFD, Table 8.4, and Example 8.8 are

Toluene = $53,927,000/yr

3
Hydrogen = $6,622,000/yr (based on a value of $0.118/std m )

Total Raw Materials = $60,549,000/yr

There are no waste streams shown on the PFD, so

Waste Treatment = $0.0/yr

From Example 8.2 the cost of operating labor is

Table E8.10 Summary of Utility Requirements for the Equipment in the Toluene Hydrodealkylation
Process