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Technical & Practical

April 1, 2012

Revamping Your Process Plant

An overview of some options to consider for increasing capacities

Siddhartha Mukherjee Air Liquide Engineering and Construction, Lurgi India

Here we study what margins are available and where the bottlenecks are in a process plant. Debottlenecking a process plant begins with a process study that involves evaluating the plant in its entirety and identifying the obstacles that come in the way of an increase in the capacity. It could be a restricted pipe size that could come in the way of a required increased flow, or a heat exchanger where the surface area falls short of the required, future heat-load requirements. It could be a column, where increased vapor-liquid traffic leads to an unacceptable pressure drop. It could be a control valve, which even at full open condition, allows only a portion of the intended flow. In most cases, it is a combination of some or all of these factors....

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