Benzene reduction in gasoline by alkylation with higher olefins

A benzene-rich gasoline stream is alkylated with higher olefins in contact with a fluid bed of shape selective zeolite catalyst to produce a gasoline product stream reduced in benzene content wherein the high octane value alkylaromatics formed by benzene alkylation are of low carbon number, essentially C10-. Concurrently, a portion of olefins in the gasoline stream are converted to gasoline boiling range hydrocarbons and the sulfur content of the gasoline feedstream is lowered. Besides enhancing the octane value of the feedstream, the process results in a lower Reid vapor pressure and lower sulfur content.

Naphtha cracking

A process for naphtha cracking comprises contacting the naphtha feedstock with a catalyst comprising an inorganic, porous, non-layered crystalline phase material exhibiting, after calcination, an X-ray diffraction pattern with at least one peak at a d-spacing greater than about 18 Angstrom Units and having a benzene adsorption capacity of greater than 15 grams of benzene per 100 grams of said material at 6.7 kPa (50 torr) and 25°C.

Isoparaffin-olefin alkylation process.

THE ALKYLATION OF AN ISOPARAFFIN WITH AN OLEFIN TO PROVIDE ALKYLATE IS CARRIED OUT IN THE PRESENCE OF, AS CATALYST, A ZEOLITE HAVING THE FOLLOWING X-RAY DIFFRACTION LINES:INTERPLANAR D-SPACING (A)RELATIVE INTENSITY I/Io x 100 12.36 ? 0.4M-VS 11.03 ? 0.2M-S 8.83 ? 0.14M-VS 6.18 ? 0.12M-VS 6.00 ? 0.10W-M 4.06 ? 0.07W-S 3.91 ? 0.07M-VS 3.42 ? 0.06VS

Isoparaffinolefin-alkylierungsprozess