55results about How to "Octane reduction" patented technology

A modified catalyst of C3-C11 petroleum spirit, comprising 0.1-5.0 mass% of mixed rare-earth oxide or antimony trioxide, 95.0-99.1 mass% of carrying agent, wherein the carrying agent comprises 50-80 mass% of HZSM-5 zeolite and 20-50 mass% of gamma-aluminum oxide. The catalyst fits for low octane rating gasoline modification for boosting the octane and lowering olefin content.

A process for deeply hydrorefining poor-quality gasoline includes such steps as removing biolefine from FCC full-fraction gasoline at lower temp, and modifying (arylisomerizing) and hydrodesulfurizing at higher temp. The hydrodesulfarizing catalyst is the hydrorefining catalyst containing copper oxide and / or zinc oxide.

The invention provides a light hydrocarbon sweetening catalyst based on aluminum oxide crystal face regulation and control and a preparation method of the light hydrocarbon sweetening catalyst. The light hydrocarbon sweetening catalyst is prepared by taking gamma-aluminum oxide after hydro-thermal treatment regulation and control as a carrier and nickel and molybdenum and active metals. The light hydrocarbon sweetening catalyst provided by the invention is a high-activity and high-selectivity catalyst, can be used for catalyzing thiol and alkadiene in light hydrocarbon to act to generate large-molecular sulfide, can be also used for catalyzing selective hydrogenation saturation of diolefin, is high in sweetening activity and high in diolefin hydrogenation selectivity when being compared with a conventional catalyst and is long in circulation period and relatively good in industrial application prospect as active components are not lost and low in probability of inactivation.

The catalyst for aliphatic mono-olefine hydrosaturation catalyst is formed from active component and carrier, in which active component comprises (wt%) Mo2O3 5-20%, NiO 4-15% and X1 1-5%, in which X1 is one or several kinds selected from B, P and Si, besides, it also can include adjuvant X2, the weight percentage content of X2 is 0-5%, and its carrier is active alumina. Said catalyst is applicable to hydrosaturation of C4-C20 fatty olefines, specially applicable to hydrosaturation of light olefines, such as ethylene, propylene and butylene oligomer gasoline to produce gasoline with high octane value. Its hydrogenation condition includes: temp. is 180-300 deg.C, pressure is 1.5-4.0 MPa, liquid hourly space velocity is 1.0-5.0 h(-1) and mole ratio of hydrogen and olefine is 1.5-2.5.

The invention discloses a conversion technology for catalytic diesel. The conversion technology comprises the following steps that (1) mixed materials of catalytic cracking diesel and hydrogen enter ahydrogenation reactor for hydrofining reaction; (2) hydrofining reaction effluent directly enters a cracking reactor and is subjected to contact reaction with hydrocracking catalyst beds in the cracking reactor, wherein a hydrocracking reactor is filled with an upper hydrocracking catalyst bed and a lower hydrocracking catalyst bed in a grading manner, a catalyst of the upper bed takes W-Ni and / or Mo-Ni as an active metal component and takes a modified Y molecular sieve and / or alkali metal or alkaline earth metal modified aluminum oxide as a carrier, and a catalyst of the lower bed takes Mo-Co as an active metal component and takes the modified Y molecular sieve and carbon deposit aluminum oxide as a carrier; and (3) the hydrocracking reaction effluent obtained in the step (2) is subjected to separation and fractionation so as to obtain a naphtha component and a diesel component. According to the conversion technology, on the premise that the conversion rate of the catalytic diesel isbetter met, the hydrogenation saturation of a generated gasoline component is reduced, and the octane value of the gasoline component is increased.