mixture
Raffinate-1 (C4 raffinate)
Crude C4 after butadiene extraction: isobutene, n-butenes and butanes; composition by the crude C4 cut. The slug is not raffinate-1, which would read like a process id. No composition recorded yet: one goes in only with its source (docs/registry.md, Fuel mixtures).
Made by
- 1,3-Butadiene by extractive distillation of a steam-cracker crude C4 cutCo-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 Raffinate-1 (C4 raffinate): nothing to compare yet. A comparison appears when a second route is added.
Per 1 kg of Raffinate-1 (C4 raffinate): 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 |
|---|---|---|---|---|---|---|---|
| 1,3-Butadiene by extractive distillation of a steam-cracker crude C4 cutcontinuous extractive distillation with a polar solvent (NMP in the BASF process, also acetonitrile or DMF); the energy data are for C4 separation without the solvent stated; butadiene by dehydrogenation of butane or butenes is not modelled | Tier 1 (sourced conceptual)Design maturity: Concept (research)Not independently reviewedDataset review: unreviewed | RER, 2006 | a co-product of a multi-output dataset (product:butadiene, product:c4-purge 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.