Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Vapour & liquid load both
Running cost of steam for reboiler
Running cost of cooling water for condenser
Fixed charges initially

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Process Equipment and Plant Design
Seamless pipe is made

By extrusion & casting into static and centrifugal molds
From rolled strips formed into cylinders and seam-welded
Both B and C
By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer point and further reducing it by rolling gas drawing

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