mixture
C9+ aromatics (heavy aromatics cut)
Aromatics with nine or more carbon atoms (trimethylbenzenes, ethyltoluenes, heavier), the bottoms of an aromatics plant's xylene column; used for gasoline blending, refinery reprocessing or as transalkylation feed (LVOC BREF 2017, 4.2.2.3.1). No composition recorded yet: one goes in only with its source (docs/registry.md, Fuel mixtures).
Made by
- Benzene, toluene and mixed xylenes by solvent extraction of catalytic reformateCo-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 C9+ aromatics (heavy aromatics cut): nothing to compare yet. A comparison appears when a second route is added.
Per 1 kg of C9+ aromatics (heavy aromatics cut): 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 |
|---|---|---|---|---|---|---|---|
| Benzene, toluene and mixed xylenes by solvent extraction of catalytic reformateliquid-liquid or extractive-distillation extraction with sulfolane-type solvent, clay treatment, distillation; para-xylene recovery, isomerisation, toluene conversion and pygas feed are not modelled | Tier 1 (sourced conceptual)Design maturity: Concept (research)Not independently reviewedDataset review: unreviewed | RER, 2012 | a co-product of a multi-output dataset (product:benzene, product:toluene, product:xylenes, product:raffinate 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.