TY - JOUR ID - 130196 TI - New Method of Corrosion in Isomerization Units JO - Advanced Journal of Chemistry, Section A JA - AJCA LA - en SN - 2645-7768 AU - Samimi, Amir AD - Risk Specialist and Process Engineer in Oil and Gas Refinery Company, Isfahan, Iran Y1 - 2021 PY - 2021 VL - 4 IS - 3 SP - 206 EP - 219 KW - Chlorine KW - Feed KW - Isomerization Unit KW - corrosion DO - 10.22034/ajca.2021.277905.1248 N2 - Naphtha isomerization is one of the reactions present in catalytic conversion process of heavy naphtha. The catalyst is highly active at 80-100 °C; however, due to corrosion, environmental issues, and the lack of appropriate selectivity, it has not been commonly used. In addition, since naphtha conversion catalysts act at 320-450 °C and at this temperature isomerization is not appropriately done, the catalyst did not show good activity in isomerization of light alkanes. The presence of a known concentration of HCl on the catalyst surface will cause the Bronsted places to have stability and maintain the catalytic activity during the reaction. In this research study, the conditional contract arrangement was utilized to extract the relevant knowledge in isomerization for 3 major factors: H2/HC, optimum pH and acidic site in catalyst. Results revealed that, the best range of temperature of light Naphtha in feed was less 30 °C, pressure of recycle gas was more than 35 bar, the H2/HC was less than 0.05, conditions of feed (temperature was less than 35 °C, pressure was more than 19 bar), optimum pH was less than 5.5 and the ratio of metal and acidic site in catalyst was under 6. UR - http://www.ajchem-a.com/article_130196.html L1 - http://www.ajchem-a.com/article_130196_c73ffb2be7b91189dbacfa833a54cfac.pdf ER -