FCCU Debutanizer Data
Plant |
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Design |
Survey |
Simulation |
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| FCCU charge, MBPSD | 25 |
30.5 |
30.5 |
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| Debutanizer charge, MBPSD | 31.1 |
29.5 |
29.5 |
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| Debutanizer reflux, MBPSD | 14.6 |
11.2 |
11.0 |
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| Debutanizer OH prod, MBPSD | 9.5 |
7.7 |
7.7 |
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| Debutanizer OH pressure, psig | 165 |
155 |
155 |
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| Overhead C5+ purity, LV% | 0.5 |
1.7 |
1.7 |
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| Bottom C4- purity, LV% | 0.05 |
0.7 |
0.7 |
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| Bottom RVP | 7.0 |
7.7 |
|||||||
| Bottom API gravity | 58.5 |
58.3 |
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| Estimated flooding percentage | 77 |
57 |
57 |
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| Condenser inlet temp, ° F | 148 |
146 |
152 |
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| Condenser outlet temp, ° F | 100 |
111 |
113 |
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| Amount of subcooling, ° F | 19 |
8 |
8 |
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| Cooling water supply temp, ° F | 80 |
65 |
65 |
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| Cooling water return temp, ° F | 105 |
102 |
102 |
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| Condenser D Q, MMBTU/hr | 29.1 |
23.8 |
23.8 |
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| LMTDc, ° F | 36.5 |
50.8 |
50.8 |
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| Overall heat transfer coef., U | 124 |
(1) | 44.3 |
44.3 |
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| Cooling water flow rate, gpm | 2,292 |
1,279 |
1,279 |
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| Cooling water D P, psi | 8 |
22 |
3 |
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| (1) The unit was over-surfaced so that the U required was only 76.3. | |||||||||