2results about How to "Low pour point" patented technology

This invention provides a method for producing lubricating oil base oil from heavy feedstock and the resulting lubricating oil base oil. The method includes: cutting the heavy feedstock to obtain a light component, a middle fraction, and a bottom wax; wherein the boiling point ranges of the light component, the middle fraction, and the bottom wax are 170-300℃, 300-500℃, and >500℃, respectively; subjecting the bottom wax to a first isomerization reaction under the catalysis of a first isomerization catalyst to obtain a first isomerization product; subjecting the first isomerization product and the middle fraction to a second isomerization reaction under the catalysis of a second isomerization catalyst to obtain a second isomerization product; subjecting the second isomerization product to hydrorefining; and then fractionating the obtained refined product to obtain the lubricating oil base oil. The lubricating oil base oil produced by this method has high yield, low pour point, low cloud point, and high viscosity index, making it a high-quality lubricating oil base oil.

This invention belongs to the field of lubricating oil technology and discloses a method for synthesizing isopropylnaphthalene and its application. The method for synthesizing isopropylnaphthalene includes reacting a naphthalene source and an alkylating agent under an inert atmosphere and in the presence of a composite catalyst to obtain isopropylnaphthalene; the composite catalyst is a molecular sieve and SO4 supported on the molecular sieve. 2‑ Based on the mass of the composite catalyst being 100%, the SO4 2‑ The mass fraction is 2% to 11%; the composite catalyst of the present invention uses SO4 2‑ Loaded on a molecular sieve support, on the one hand, SO4 2‑ The combination of the superacid properties and the high specific surface area and certain pore structure of the molecular sieve can provide more acidic sites. The resulting composite catalyst exhibits high reaction conversion rate and selectivity for diisopropylnaphthalene in the naphthalene / 2-isopropylnaphthalene and propylene isopropylation reactions.