March 2007

Process Technology

Increase distillation capacity with side heaters and coolers

Debottlenecking towers involves close review of product yields while reducing tray flooding and energy consumption

Yahyaabadi, R., Esfahan Oil Refining Co.

Increasing distillation capacity for a column is a complex problem. The hydraulic loads used to separate out various product streams vary with each section of the column. Changes in one section can adversely impact other sections of the distillation process, thus compromising total yields of the operation. But there are options to overcome debottlenecks in distillation units. In this case history, side heater/cooler capacity is successfully applied to increase capacity of straight-run gasoline (SRG) stabilizer. Limits of distillation units. Often, distillation columns are forced to increase feedrates thereby raising unit capacity. Several options are available to debottleneck these columns

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