Design and Calculation of a Chlorinated Container to Prevent Oil Production

One of the most important problems in the catalyst regeneration operational units of refineries and petrochemical complexes is the presence of water and chlorine above the permissible limit in the hydrogen produced from these units. The aim of this article is to remove green gum material in the hydrogen gas produced from the reduction vessel. The novelty of present study is the removal rate of hydrogen produced increased from ۷۰۰ ppm to ۷۱۰ ppm which is unparalleled in the licensing of French companies. In this study, the possibility of removing water and chlorine was studied and finally, concerning the removal of oil formed from the unit output, the method proposed in this paper was proposed and implemented as an operational method in the catalyst regeneration unit. The results of the process simulation using Aspen software (version ۱.۱۰) showed that the chlorine present in the unit output has decreased from ۱۱۰۰ ppm before the changes to less than ۱۰ ppm after the process changes. Likewise, water has decreased from ۲۱۵۰ ppm before the changes to ۱۰۰ ppm. Due to these changes, the HCl present in the outlet was ۱۹۸ ppm and it reduced the outlet pH to ۴.۴ and created a completely acidic environment with high corrosiveness. By completely removing the HCl, the outlet pH increased to about ۹.۶ and the corrosion rate of the unit outlet decreased significantly. It should be noted that applying these changes to the process increased the purity of the produced hydrogen and as a result, its amount increased from ۷۰۰ ppm to ۷۱۰ ppm, or in other words, the production rate increased from ۲۰ ton/hr to ۲۲ ton/hr.

کلیدواژه ها:

Green Liquid ، Chlorine Absorber ، HCl ، H۲ ، Process