European Journal of Technology and Design, 2014, Vol.(6), № 4 169 Copyright © 2014 by Academic Publishing House Researcher Published in the Russian Federation European Journal of Technology and Design Has been issued since 2013. ISSN: 2308-6505 E-ISSN: 2310-3450 Vol. 6, No. 4, pp. 169-172, 2014 DOI: 10.13187/ejtd.2014.6.169 www.ejournal4.com UDC 69 Presentation of Novel Basic Conditions for Sweetening of Crude Oil 1 Farshad Farahbod 2 Alison Zamanpour 3 Mohammad Hossein Zabihi Shirazi Fard 1 Islamic Azad University, Firoozabad, Fars, Iran Department of Chemical Engineering, Firoozabad Branch E-mail: mf_fche@iauf.ac.ir 2 Islamic Azad University, Firoozabad, Fars, Iran E-mail: zamanpour.a@gmail.com 3 Islamic Azad University, Firoozabad, Fars, Iran E-mail: mhzabihish@gmail.com Abstract The important feature which is considered is to improve the adsorption efficiency of hydrogen sulphide from hydrocarbon fuels such as petroleum oil by applying the zinc oxide as nano catalyst. Totally, the optimum conditions to eliminate the hydrogen sulphide from petroleum oil are evaluated in this paper, experimentally. In this paper, zinc oxide nano particles are synthesized and are contacted with flow of sour petroleum. A method of removing sulphur from sour oil by nano catalyst is a novel method. ZnO nano catalyst of 35 nm in diameter is used to treat the sour oil. The useful correlations are presented to predict the optimum conditions for sweetening of crude oil by ZnO as nano catalyst. Keywords: nano; oil; crude; catalyst. Introduction A more generalized description of nanotechnology was subsequently established by the National Nanotechnology Initiative, which defines nanotechnology as the study and application of fine particles which are sized from 1 to 100 nanometres in all of the science fields [1]. Sulphur compounds in fuels such as petroleum oil cause problems on two fronts: they release toxic oiles during combustion, and they damage metals and catalysts in engines and fuel cells. They usually are removed using a liquid treatment that adsorbs the sulphur from the petroleum oil, but the process is cumbersome and requires that the oil be cooled and reheated, making the fuel less energy efficient [2]. To solve these problems, researchers have turned to solid metal oxide adsorbents, but those have their own sets of challenges. While they work at high temperatures, eliminating the need to cool and re-heat the fuel, their performance is limited by stability issues. They lose their activity after only a few cycles of use [3]. Previous studies found that sulphur adsorption works best at the surface of solid metal oxides. So, the authors set out to create a material with maximum surface area. The solution seems to be tiny grains of zinc oxide nano particles, uniting high surface area, high reactivity and