Waste sunflower oil and/or light cycle oil hydrotreating over NiW/pseudoboehmite+SBA-15 and NiW commercial catalyst

摘要

Actual increasing crude oil demands can be covered by several methods: more intensive use of renewable resources, deeper and more effective treating of heavy fractions and crude oil residues, or increase in crude oil production. From environmental point of view, the combination of renewable and fossil resources seems to be highly promising. The most efficient is so called co-processing, where fossil and renewable materials are treated together. These processes are usually in all the oil refineries for by-products valorization. Triglycerides based materials are the most preferred compounds for the green diesel and representatives of suitable renewable feedstocks. By other side, million cubic meters per day of light cycle oil (LCO) is produced worldwide. LCO is one of the products of the fluid catalytic cracking (FCC) of vacuum distillates, atmospheric residues and other heavy fractions. LCO can be upgraded by different ways to fulfill requirements of European Union (EN 590). Different commercial processes, typically hydrotreating and/or hydrocracking, are being used in the presence for upgrading the LCO. The hydrotreating process is attractive for production of diesel or fuel oil range products, while hydrocracking processes are more selective for naphtha range products. The co-processing of aromatic LCO and paraffinic vegetable oil has the potential to generate synergy for further improvement of the product quality. Our aim was to study the catalytic activity and co-processing effects on the catalysts, using light cycle oil (LCO) and/or waste sunflower oil (WSO) using a high content (1:1) of LCO.