FLEXIBLE PROCESS FOR PRODUCING BASE STOCK AND DISTILLATES BY CONVERSION-HYDROISOMERISATION USING A CATALYST WITH LOW DISPERSION FOLLOWED BY CATALYTIC DEWAXING

摘要

Flexible production process base oils and distillates for conversion hydroisomerization catalyst dispersed on a slightly 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 a silica-alumina amorphous. 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.