Catalytic hydroprocessing of waste cooking oil for the production of drop-in aviation fuel and optimization for improving jet biofuel quality in a fixed bed reactor

Selective Single‐step Co‐hydroprocessing of Light Cycle Oil and Waste Cooking Oil Mixtures for Diesel Fuel Production

“…[18] The improvement in density can be attributed to the formation of both normal and iso-paraffins during the catalytic hydroprocessing of WCO when co-processed with LCO. [19] Toth et al [15] also discovered the same findings where the density of the final products improved with the inclusion of WCO.…”

“…Moreover, the highest improvement (10.7 %) is obtained only for LCO/WCO 70/30 blended feedstock at the highest temperature (380 °C), which reached the diesel specification (0.82–0.845 g/mL) [18] . The improvement in density can be attributed to the formation of both normal and iso‐paraffins during the catalytic hydroprocessing of WCO when co‐processed with LCO [19] . Toth et al [15] .…”

“…Herein, when the temperature was raised to 380 °C (highest temperature), poly‐aromatic saturation was not favoured as compared to lower temperatures. This phenomenon could be attributed to the fact that when WCO is added to LCO and hydroprocessed, cracking reactions prove to be as effective as saturating poly‐aromatics, especially at elevated temperatures [19] …”

“…This phenomenon could be attributed to the fact that when WCO is added to LCO and hydroprocessed, cracking reactions prove to be as effective as saturating poly-aromatics, especially at elevated temperatures. [19] Cetane number content Cetane number is a crucial characteristic since it reveals ignition delay and interval between fuel injection and the beginning of combustion in diesel engines. The dependence of the cetane number on the aromatic concentration and the inverse relationship between its values are well known.…”

“…This could be attributed to the fact that the triglycerides present in the WCO got transformed into normal paraffins, leading to a rise in the cetane number of the product. [19] When compared to other types of hydrocarbons found in diesel fuel, long-chain paraffins provide the best ignition quality features. [21] However, as shown in Figure 4, none of the products matches the specifications, despite the fact that the minimum cetane number required in Europe is 51.…”