A plant modification has been proposed that will allow recovery of a by-product. The modification consists of adding the following equipment: 

Distillation column, height 30m, diameter 3m, 50 sieve trays, operating pressure 10 bar U-tube heat exchanger, area 60 m² Kettle reboiler, area 110 m² Horizontal pressure vessel, volume 3 m³ , operating pressure 10 bar Storage tank, volume 50 m³ Two centrifugal pumps, flow rate 3.6 m³ /h, driver power 500 W Three centrifugal pumps, flow rate 2.5 m³ /h, driver power 1 kW (two installed plus one spare) 

Estimate the installed ISBL capital cost of the modification if the plant is to be built from type 304 stainless steel. Estimate the cost using both Hand’s method and the factors given in Table 6.4.

 

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Table 6.4 Typical factors for estimation of project fixed capital cost Process type Fluids- solids Item 1. Major equipment, total purchase cost fer Equipment erection fp Piping f, Instrumentation and control fel Electrical f. Civil f, Structures and buildings f, Lagging and paint ISBL cost, C = EC₂ x Offsites (OS) Design and Engineering (D&E) Contingency (X) Total fixed capital cost CFC = C (1 + OS)(1 + D&E + X) = C x = SC, x Fluids Ce 0.3 0.8 0.3 0.2 0.3 0.2 0.1 3.3 0.3 0.3 0.1 1.82 6.00 Ce 0.5 0.6 0.3 0.2 0.3 0.2 0.1 3.2 0.4 0.25 0.1 1.89 6.05 Solids Ce 0.6 0.2 0.2 0.15 0.2 0.1 0.05 2.5 0.4 0.2 0.1 1.82 4.55 Orti Activate Wind