Flexible method of producing base oils and middle distillates with a conversion-hydroisomerization followed by catalytic dewaxing.

摘要

Flexible production process base oils and middle distillates conversion- hydroisomerization followed by catalytic dewaxing.; The invention relates to a process, improved manufacturing base oils and very high quality middle distillates simultaneous production of high quality, comprising the successive steps of hydroisomerization and catalytic dewaxing.; Hydroisomerization takes place in the presence of a catalyst containing at least one noble metal deposited on an amorphous acidic support, the dispersion being 20-100% metal. Preferably the support is an amorphous silica-alumina.; The catalytic dewaxing takes place in the presence of a catalyst containing at least one hydro-dehydrogenating element (group VII) and at least one molecular sieve (zeolite preferred). Preferably, the sieve is selected from NU-10, EU-1, EU-13 and ferrierite zeolite.