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http://dx.doi.org/10.9713/kcer.2013.51.2.245

A Study of Complex Distillation Arrangements Using Dividing Wall Columns for Improved Depropanizing, Debutanizing and Deisobutanizing Fractionation of NGL  

Nguyen, Van Duc Long (School of Chemical Engineering, Yeungnam University)
Jang, Sungkeun (School of Chemical Engineering, Yeungnam University)
Lee, Moonyong (School of Chemical Engineering, Yeungnam University)
Publication Information
Korean Chemical Engineering Research / v.51, no.2, 2013 , pp. 245-249 More about this Journal
Abstract
The depropanizing, debutanizing and deisobutanizing fractionation steps of processing natural gas liquids were improved through studying complex distillation arrangements, including the double dividing wall column arrangement (DDWC), the sequence including a dividing wall column (DWC) and a bottom DWC (BDWC), and the sequence including a DWC and a BDWC with top vapor recompression heat pump. These arrangements offer benefits by decreasing reboiler and condenser power consumption. Reducing the number of columns and their diameters can potentially reduce construction costs. The result also showed that operating cost could be reduced most significantly through novel combinations of internal and external heat integration: bottom dividing wall columns employing a top vapor recompression heat pump.
Keywords
Dividing Wall Column; DWC; Heat Pump; Thermally Coupled Distillation Column; Heat Integration; NGL Recovery;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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