Adsorption Removal of Benzene from Hydrocarbon Fractions in the Production of Commercial Motor Gasolines

Abstract

The prospects and features of the implementation of the process of adsorption purification of hydro-carbon fractions from benzene in the production of commercial motor gasoline are considered. It is known that benzene belongs to hazard class I according to the IARC classification, as a result of which its maximum removal from gasoline is one of the main tasks of the oil refining industry. It has been proven that adsorption purification, which is a selective method, is a promising process aimed at ensuring the required quality of automotive gasoline in accordance with current environmental safety standards (Euro 5) due to its simplicity of implementation, high selectivity, and economic and environ-mental advantages. Benzene removal is a rather complex technical task, but it can be effectively implemented using modern adsorbents such as NaY and ZSM-5 zeolites (selectivity – 80–95 %) and MIL-101 and UiO-66 MOF systems (selectivity – 90–99 %). The main direction of integrating adsorption purification of hydrocarbons from benzene is the possibility of its technological combination with gasoline secondary processing units, catalytic cracking, and reforming within a single automobile gasoline production facility.