Page 305 - Chemical engineering design

280
S 1
1
MT
Capacity of plant 2
S 2 Capacity of plant 1 CHEMICAL ENGINEERING MT 1
s Reactor conversion
Ł
Asterisk ( ) indicates that these dimensions are dependent on the type of equipment.
6.14. PROBLEMS
6.1. The capital cost of a plant to produce 100 t per day of aniline was 8.5 million US
dollars in mid-1992. Estimate the cost in pounds sterling in January 2004. Take
the exchange rates as: £1 D $2.0 in mid-1992 and £1 D $1.8 in January 2004.
6.2. The process used in the manufacture of aniline from nitrobenzene is described
in Appendix G, design problem G.8. The process involves six significant stages:
Vaporisation of the nitrobenzene
Hydrogenation of the nitrobenzene
Separation of the reactor products by condensation
Recovery of crude aniline by distillation
Purification of the crude nitrobenzene
Recovery of aniline from waste water streams
Estimate the capital cost of a plant to produce 20,000 tonne per year.

6.3. A reactor vessel cost £365,000 in June 1998, estimate the cost in mid-2004.
6.4. The cost of a distillation column was $225,000 in early 1998, estimate the cost
in January 2004.
6.5. Using the data on equipment costs given in this chapter, estimate the cost of the
following equipment:
2
1. A shell and tube heat exchanger, heat transfer area 50 m , floating head type,
carbon steel shell, stainless steel tubes, operating pressure 25 bar.
2
2. A kettle reboiler: heat transfer area 25 m , carbon steel shell and tubes,
operating pressure 10 bar.
3. A horizontal, cylindrical, storage tank, 3 m diameter, 12 m long, used for
liquid chlorine at 10 bar, material carbon steel.
4. A plate column: diameter 2 m height 25 m, stainless clad vessel, 20 stainless
steel sieve plates, operating pressure 5 bar.

6.6. Compare the cost the following types of heat exchangers, to give a heat transfer
2
area of 10 m . Take the construction material as carbon steel.
1. Shell and tube, fixed head
2. Double-pipe
6.7. Estimate the cost of the following items of equipment:
1. A packaged boiler to produce 20,000 kg/h of steam at 10 bar.
2. A centrifugal compressor, driver power 75 kW
3. A plate and frame filter press, filtration area 10 m 2