1. SEPARATION SYSTEM CSTR C- 101 C- 102 PBR V- 102 C- 103

2. Column 1: Benzene Recovery (C-101) ComponentInlet (kg/hr) Distillate (kg/hr) Bottom (kg/hr) i-Butane 4740.00 0 i-Butene 71100.00 0 1-Butene 47400.00 0 n-Butane 96.56 0 1,3-Butadiene 9480.00 0 Trans-2-Butene 16590.00 0 Cis-2-Butene 16590.00 0.17 Vinyl- cyclohexene 71070.000 Benzene 142100.00142.16141957.84 Total 379166.60 166138.70213028.00  Column Operating Data Fenske Eq.Gilliland Eq. Nmin = 9.6 stagesN=22 stages  Mass Balance Underwood Eq. Rmin = 0.0411R=0.0616 Kirkbride Eq. Nr = 2 stagesNs=20 stages Number of stages Reflux ratio Feed tray location

3. Column 2: VCH Recovery (C-102) ComponentInlet (kg/hr) Distillate (kg/hr) Bottom (kg/hr) i-Butane 0 0 0 i-Butene 0 0 0 1-Butene 0 0 0 n-Butane 0 0 0 1,3-Butadiene 0 0 0 Trans-2-Butene 0 0 0 Cis-2-Butene 0.17 0 Vinyl- cyclohexene 71070.00 0 Benzene 141957.84 140538.26 0 Total213028.00140538.4371070.00  Column Operating Data Fenske Eq.Gilliland Eq. Nmin = 11.1 stagesN=23 stages  Mass Balance Underwood Eq. Rmin = 0.67R=1.0 Kirkbride Eq. Nr = 10 stagesNs=15 stages Number of stages Reflux ratio Feed tray location

4. 3-Phase Separator: Decanter (V-102) ComponentInlet (kg/hr) Gas (kg/hr) Light Liquid (kg/hr) Heavy Liquid (kg/hr) Nitrogen 358112.535804069.594012.91132 Oxygen 45025.4945003.1522.230510.108488 Carbon Dioxide 45138.9445006.86116.958115.11933 Benzene 31.8503712.4624519.387930 Water 34794.631670.6065.27899333118.74 Vinyl- cyclohexene 3555.213366.97143188.2410 Styrene 62927.492641.14260286.340 Total 549586.10 452741.20 63708.0333136.88  Mass Balance

5. Column 3: Styrene Purification (C-103) ComponentInlet (kg/hr) Distillate (kg/hr) Bottom (kg/hr) Nitrogen 69.60 0 Oxygen 22.22 0 Carbon Dioxide 117 117.00 0 Benzene 5.28 0 Water 19.60 0 Vinyl- cyclohexene 3187.58 3123.83 63.75 Styrene 60289.90 3014.50 57275.41 TBC 4.12 0 Total63715.306372.0357343.28  Column Operating Data Fenske Eq.Gilliland Eq. Nmin = 9.10 stagesN=29 stages  Mass Balance Underwood Eq. Rmin = 7.8899R=8.126 Kirkbride Eq. Nr = 6 stagesNs=23 stages Number of stages Reflux ratio Feed tray location