Processing Residues
Acid oils and fatty acid distillates for fuel processing.
Showing 1–7 of 7 products
Soapstock Acid Oil
Soapstock acid oil is the generic acidulated refinery residue, made from whatever oils a refinery was processing. It is the cheapest fatty feedstock available and the most variable, so it is always bought against a lot analysis.
Distillers Corn Oil
Distillers corn oil is recovered from the stillage of dry-mill ethanol plants, after the starch has already been fermented. Because it is a residue rather than a crop, it qualifies as a waste-based feedstock under most incentive schemes.
Soybean Acid Oil
Soybean acid oil is the acidulated soapstock from soybean refining. It is the cheapest route to a soybean-derived ester, but its high polyunsaturate content gives the resulting fuel poor oxidation stability.
Rapeseed Acid Oil
Rapeseed acid oil is recovered by acidulating the soapstock from rapeseed oil refining. As a residue stream it qualifies as waste-based feedstock, and its high free fatty acid content routes it to acid esterification rather than the alkali process.
Sunflower Acid Oil
Sunflower acid oil is the acidulated soapstock from sunflower oil refining. It is generally paler and lower in phosphatides than soybean or rapeseed acid oil, which makes it marginally cleaner to process.
Palm Fatty Acid Distillate (PFAD)
Palm Fatty Acid Distillate (PFAD), rich in free fatty acids, is an abundant and low‑cost feedstock converted via esterification and transesterification into biodiesel (FAMEs) or hydrotreated renewable diesel (HVO), making it a critical waste‑derived resource for sustainable energy production.
Palm Kernel Fatty Acid Distillate (PKFAD)
PKFAD is the deodoriser distillate from palm kernel oil refining, rich in lauric and myristic acids. As a processing residue at high free fatty acid content, it is a low-cost esterification feedstock for biodiesel and renewable diesel.