mixture
Hydrocracker unconverted oil (bleed)
Hydrogen-rich, practically sulfur-free bottoms of a recycle hydrocracker, bled at 2 to 3 % of the fresh feed to keep polyaromatics from building up in the recycle loop (REF BREF 2015, section 2.13); used as FCC feed, fuel oil or lube base oil. No composition recorded yet: one goes in only with its source (docs/registry.md, Fuel mixtures).
Made by
- Hydrocracking of vacuum gas oil, single-stage recycleCo-productConcept · not reviewed
Used by
When a process with this chemical is added to the library, it appears here.
Routes compared
One route in the Atlas makes Hydrocracker unconverted oil (bleed): nothing to compare yet. A comparison appears when a second route is added.
Per 1 kg of Hydrocracker unconverted oil (bleed): inventory from each route's LCI dataset, unallocated; footprints per the functional unit of their own LCA.
| Route | Tier, design maturity, review status | Geography, year | Energy | Feedstocks | Key emissions | Footprint | Comparability |
|---|---|---|---|---|---|---|---|
| Hydrocracking of vacuum gas oil, single-stage recyclehigh-pressure fixed-bed hydrocracking (100 to 200 barg, 340 to 425 degC, REF BREF Table 2.9), single-stage with recycle of the unconverted oil; once-through, two-stage, mild and residue hydrocracking are not modelled | Tier 1 (sourced conceptual)Design maturity: Concept (research)Not independently reviewedDataset review: unreviewed | RER, 1999 | a co-product of a multi-output dataset (product:hydrocracked-products, product:fuel-gas besides it): its share needs the allocation of the LCI database build | no footprint | – | ||
ISO 14044 requires a critical review (by a panel of interested parties, ISO/TS 14071) of a comparative assertion intended to be disclosed to the public. These routes are listed side by side for screening; a statement that one is better than another needs that review. None of these routes has had such a review.