Effect of Fractionation Severity

Upon Composition and Bottom's RVP

Case

I

II

III

IV

V

Simulation

Medium RVP

Medium RVP

Matching

Some C₄

No C₄

Plant Data

Plant Data

in LSR

in LSR

Minimum RVP

Flows, BPSD

OH prod

2,511

2,806

2,852

2,864

3,055

Btms prod

6,253

6,733

6,687

6,675

6,484

Feed

9,228

9,539

9,539

9,539

9,539

Reflux

6,909

6,909

10,000

19,000

18,000

Purities

% C₅'s in OH

---

0.03%

0.01%

1.30%

6.24%

% C₄'s in btm

---

0.87%

0.19%

0.0024%

0.0003%

Bottoms RVP

9.3

9.3

9.0

8.9

8.5

Temperatures

Top

140

140

141

141

149

Bottom

300

300

302

303

305

% flood

---

38%

56%

85%

106%