Heads, vessel INDEX

Cost of Column The cost of the vessel, including heads, skirt, nozzles, and ladderways, is usually estimated on the basis of weight. Figure 14-82 provides early 1990 cost data for the shell and heads, and Fig. 14-83 provides 1990 cost data for connections. For very approximate estimates of complete columns, including internals, Fig. 14-84 may be used. As for Figs. 14-82 and 14-83, the cost index is 904. 

The f.o.b. purchase cost, at a CE index = 394, of the empty vessel, Cy, but including nozzles, manholes, and supports, based on the weight in pounds of the shell and the two heads, W, depends on orientation, as shown in Figure 16.13. The correlating equations are... 

An adiabatic reactor consists of a cylindrical vessel with elliptical heads, with an inside diameter of 6.5 ft (78 in.) and a tangent-to-tangent length of 40 ft (480 in.). Gas enters the reactor at a pressure of 484 psia and 800°F. Exit conditions are 482 psia and 850°F. The vessel will be oriented in a horizontal position. Estimate the vessel thickness in inches, weight in pounds, and purchase cost in dollars for a CE cost index of 400. The vessel contains no internals and the gas is non-corrosive. The barometric pressure at the plant site is 14 psia. 

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