Tangent Length

Steve [13] introdueed the eoneept of the aspeet ratio of a reaetor (defined as the tangent -to- tangent length of the reaetor divided by the reaetor diameter). It was shown that when the aspeet ratio (R) is the same for model and prototype reaetors, then the inerease in the... 

Reaetor straight side (tangent-to-tangent) length, ft... 

The tangent to tangent length of the drum will be approximately 24 in. greater than Lf to accommodate inlet and outlet nozzles and baffles. 

Tb is the thickness of the shell at the bottom, Tp is thickness required for the operating pressure, D is the diameter of the shell and tray, L is tangent-to-tangent length of the shell... 

The added cost, CpL, for platforms and ladders depends on the vessel inside diameter, D in feet and, for a vertical vessel, on the tangent-to-tangent length of the shell, L, in feet, and is given by ... 

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. 

A distillation column is to be used to separate isobutane from -butane. The column, which is equqjped with 100 sieve trays, has an inside diameter of 10 ft (120 in.) and a tangent-to-tangent length of 212 ft (2,544 in.). Operating conditions are 110 psia and 150 F at the bottom of the tower and 100 psia and... 

From Table 16.26, the material factor is 1.00. Thus, = 462,400. To this is added the cost of the platforms and ladders from Eq. (16.58), which, however, is applied outside of its range of 27 to 170 ft for the tangent-to-tangent length of the shell. 

Golden-section search. Use 10 steps of the golden-section search method to find the optimal dimensions for the cylindrical reactor vessel in Example 16.11. In that example, the dimensions of the vessel are given as the inside diameter, D = 6.5 ft, and tangent-to-tangent length, Z, = 40 ft. These dimensions are not... 

T/T = tangent to tangent length, in V = shear force, kips Zc = radial distance from centerline of shell to centroid of combined section of ring and effective length of shell, in. 

Horizontal vessels supported by two saddles (Fig, 12. le) act as simply supported beams. For vessels with dished heads (Fig, 12,16o) the equivalent beam length is taken as L + AH 3 where L is the tangent-to-tangent length of the vessel and... 

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