Fig. 1. Column Thermodynamic Inefficiency for separatingmidpoint component in indirect sequence (component B:mid-point component)6)
Fig. 2. Schematic of LPG process
Fig. 3. Comparing simulated product mole fraction to reference4,18)
Fig. 4. Schematic diagram of a divided wall column
Fig. 5. Design flow diagram for a divided wall column
Fig. 6. Equivalent simple column configuration to divided wallcolumn
Fig. 7. Schematic of a divided wall column diagram for simulation
Fig. 8. Composition by tray position in a divided wall column
Fig. 9. Three-dimensional plot of duties between operationvariables of vapor flow and liquid flow
Fig. 10. Case study results for efficient liquid flow
Fig. 11. Case study results for efficient vapor flow
Table 1. Total feed & de-methanizer feed conditions
Table 2. Material balance of LPG process
Table 3. Operating result in a divided wall column
Table 4. Case study result in efficient number of tray (case study 1: base A, case study 2: base B)
Table 5. Case study result in withdraw tray
Table 6. Case study result in internal liquid flow
Table 7. Case study result in internal vapor flow
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