Production of high-cetane diesel fuel from low-quality...

Details Production of high-cetane diesel fuel from low-quality... Production of high-cetane diesel fuel from low-quality...

C - Chemistry, Metallurgy

10

G

C10G 69/06 (2006.01) C10L 1/08 (2006.01)

Patent

CA 2621231

A method is taught for producing diesel fuels of high cetane value from a triglyceride feedstock, comprising pretreating the triglyceride feedstock by thermal cracking to partially convert the triglycerides and produce a middle distillates stream, and catalytically hydrotreating the middle distillate fraction to produce high cetane value diesel fuels. A biomass-derived diesel fuel is also taught having sulphur content below 10 ppm, a cetane-value of at least 70, a cloud point below 0oC and a pour point of less than -4 oC. A blended diesel fuel is also taught comprising 5 to 20 vol.% of the biomass- derived diesel fuel of the present invention and 80 to 95 vol.% of a petroleum diesel, based on total volume of the blended diesel fuel.

La présente invention concerne un procédé destiné à produire des carburants diesel d~indice de cétane élevé à partir d'une charge de triglycéride, comprenant le prétraitement de la charge de triglycéride par un thermocraquage afin de convertir partiellement les triglycérides et pour produire des flux de distillats moyens, et l~hydrotraitement catalytique de la fraction de distillat moyen afin de produire des carburants diesel d~indice de cétane élevé. La présente invention concerne également un carburant diesel dérivé de biomasse ayant une teneur en soufre inférieure à 10 ppm, un indice de cétane d~au moins 70, un point de trouble inférieur à 0 °C et un point d~écoulement inférieur à -4 °C. La présente invention concerne également un carburant diesel mélangé comprenant de 5 à 20 % en volume du carburant diesel dérivé de biomasse de la présente invention et de 80 à 95 % en volume d'un diesel de pétrole, sur la base du volume total du carburant diesel mélangé.

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