eat exchangers, vacuum pumps or ejectors, process pumps and instrumentation represent some of the critical components of distillation columns (Figure 1). Often, the problems of the column and its auxiliary equipment are inseparable. A problem with one item of the auxiliary equipment can impose a limit on a column's capacity or separation ability, or both. For example, an undersized reflux valve may constrain the reflux rate, or a fouled reboiler may-suppress column boilup.

The troubleshooter can pinpoint

A problem with any of the auxiliary equipment can hobble the operation of a distillation column y

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