Refining Processes Handbook
Filled with handy process flow diagrams, this comprehensive reference covers the technologies and operations of petroleum refineries and provides material on operating a jointly owned and operated refinery.
TABLE OF CONTENTS Refining Processes Handbook
REVERSE ALLOCATION
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The absolute values of all balancing-grade (including loss) deltas are added to obtain the absolute value of combined total deltas (AVCTD).
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The ratio of the absolute value of delta for each product and AVCTD is multiplied by the total imbalance (sum of delta allocations) to obtain the reverse allocation of that product for the other participant. The sum of such reverse allocation for each participant is equal to and of opposite sign to that participant s total imbalance (sum of delta allocations), accordingly eliminating the imbalance.
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The total allocation of each participant is the sum of the retrospective DOP plus the sum of allocations for such product made under steps 3 and 4.
The preliminary product allocation is now complete.
Example 16 4: PRELIMINARY ALLOCATION
Two participants, AOC and BOC, run a 250 mbpd oil refinery. Participant AOC has a 210 mbpd refinery capacity and participant BOC has a 40 mbpd refinery capacity. The refinery is operated as a joint-ownership refinery as per their processing agreement (see the Appendix). The entire product allocation procedure for effecting their preliminary allocation is shown in Tables 16 1 to 16 8.
| PRODUCT | AOC | BOC | TOTAL |
|---|---|---|---|
| 1138B | 60000 | 46590 | 106590 |
| 1149B | 0 | 0 | 0 |
| 150 | 17839 | 0 | 17839 |
| 201 | 0 | 864 | 864 |
| 210 | 946831 | 227578 | 1174409 |
| 220 | 0 | 0 | 0 |
| 383 | 0 | 0 | 0 |
| 390 | 76800 | 0 | 76800 |
| 395 | 0 | 0 | 0 |
| 397 | 512647 | 80716 | 593363 |
| 397E | 0 | 0 | 0 |
| 398 | 44100 | 0 | 44100 |
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