Influence of cyclopentane on supercritical solvent deasphalting behavior of Canadian oil sand bitumen
Bibliographic record
Abstract
Canadian oilsand bitumen VTB(Vacuum topped bitumen) is separated into deasphalted oil(DAO) and de-oiled asphalt(DOA) on a supercritical solvent deasphalting and post-extraction asphalt granulation device.n-Pentane and a mixed solvent composed of 10 vol% cycolpentane and 90vol% n-pentane are chosen as the solvent in the experiment.The properties of DAO and DOA are compared to investigate the influence of cyclopentane on solvent deasphalting behavior.It is found that the yield of DAO can raise 1 wt%-4 wt% when the n-pentane is replaced by mixed solvent.Even though the properties of DAO have no apparent differences for the two kinds of solvents,the DOA softening points obtained with mixed solvent are 3-13℃ higher than that of n-pentane.Therefore,the nice asphalt particles could be produced with the mixed solvent composing of cyclopentane.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".