Identify the incorrect statement regarding the application of valve trays, sieve trays, and bubble cap trays in continuous distillation columns.

Pick out the wrong statement pertaining to the use of valve tray, seive tray and bubble cap trays in continuous distillation column ? - PakMcqs

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Subject: Process Equipment and Plant Designchemical-engineering › process-equipment-and-plant-design
Published: 3 Mar 2019
Last updated: 28 May 2026

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Although bubble cap trays are the costliest, they are ideal when handling low vapor rates and require a reliable liquid seal at all flow conditions.The Murphree efficiency values of valve, sieve, and bubble cap trays are almost the same, but sieve and valve trays usually achieve higher maximum efficiency than bubble cap trays.Valve and sieve trays incur higher maintenance expenses compared to bubble cap trays because of their more complex design features.Valve trays offer the greatest turn-down ratio, meaning the widest range between maximum and minimum vapor flow rates, allowing for the most flexible operation.

Explanation

Option C is incorrect because valve and sieve trays generally require less maintenance than bubble cap trays due to their simpler construction. Bubble cap trays, being more intricate, typically have higher upkeep costs. The other statements accurately describe the characteristics and performance of these trays in distillation columns.

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Identify the incorrect statement regarding the application of valve trays, sieve trays, and bubble cap trays in continuous distillation columns.

Explanation

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