80results about How to "High acid density" patented technology

A kind of hydrocarbon-oil desulfuration agent contains, on the catalyst-weight basis, 15-60% phosphorus-modified and rare-earth-contained Y type zeolite, 10-60% inorganic oxide, and 0-75% clay; and phosphorus-modified and rare-earth-contained Y type zeolite contains, in weight percent, 0.5-8% phosphorus in presence as P2O5 and 18-35% rare-earth in presence as RE2O3, Moreover, the proportion of silicon and aluminium in zeolite is lower than 6.

The present invention discloses an aluminum-rich Beta zeolite synthesis method, which comprises: placing aluminum nitrate in a high temperature furnace, and calcining to synthesize alumina; mixing an inorganic base, an aluminum source, a silicon source and water, and stirring to obtain a silicon aluminum gel; adding the obtained alumina, and drying until the water is completely evaporated; and finally loading the dried gel into the upper portion of the reactor, adding a fixed amount of ammonia water to the bottom portion of the reactor, and carrying out crystallization synthesis to obtain the Beta zeolite. According to the present invention, the synthesized Beta zeolite is low silica-alumina ratio zeolite, and has high crystallinity, and the generation of miscellaneous crystals is effectively avoided and the operation is simple and easy to perform.

The invention discloses a method for removing nitride in an oil product by utilizing multi-sulfonate ionic liquid. The method comprises the following steps: adding the multi-sulfonate ionic liquid into the oil product to carry out protonation removal on non-alkaline nitride in the oil product and carry out sulfonation removal on alkaline nitride in the oil product. Specifically, the method comprises the following steps: mixing the multi-sulfonate ionic liquid with the oil product according to the mass / volume ratio of 1g / 450mL; stirring under a room-temperature condition for 20min to 30min to enable pyrrole in the oil product to be subjected to protonation reaction, so as to generate polypyrrole; carrying out sulfonation transformation on isoquinoline to generate 5-isoquinoline sulfonic acid to remove the isoquinoline. According to the method disclosed by the invention, the non-alkaline nitride which takes the pyrrole as a representative can be protonated by the strong acidity in the ionic liquid and further reacts to generate the polypyrrole, so as to remove the non-alkaline nitride; on the other hand, the alkaline nitride which takes the isoquinoline as a representative can be subjected to the sulfonation transformation to generate the 5-isoquinoline sulfonic acid to remove the alkaline nitride; a thiophene type sulfur-containing compound in the oil product and an olefin typecompound can be subjected to alkylation, so that disturbance, caused by the sulfur-containing compound, on a denitrification process is greatly reduced.

The present invention provides a composite solid acid catalyst consisting of from 50%-80% by weight of a porous inorganic support, from 15% to 48% by weight of a heteropoly compound loaded thereon, and from 2% to 6% by weight of an inorganic acid. The present invention further provides a process for preparing said composite solid acid catalyst and a process for conducting an alkylation reaction by using such catalyst. The composite solid acid catalyst of the present invention has the acid sites type of Brönsted acid and has an acid sites density of not less than 1.4×10−3 mol H+ / g. Moreover, said composite solid acid catalyst has the homogeneous acid strength distribution, and is a solid acid catalyst having excellent performances.