Table 5: Key Design parameters of the figure 1b 4-column configuration to recover and Purify BTX from sulfolane extract.

Parameter	BTEX Recovery Column	Benzene Column	Toluene Column	Xylenes Column
Number of Theoretical Stages	13	33	24	190
1st Feed Stage	3	19	12	4
Approximate Average Column Pressure, bar	1.41	1.34	1.51	2.34
Estimated Overhead Temperature, °C	102	58	117	152
Estimated Bottoms Temperature, °C	310	136	149	156
Estimated Reflux Ratio	1.8	5.0	4.6	9.5
Product Purity (wt%)	99.1	99.2	99.0	98.0