RECOVERY OF VALUABLE OLEFINS FROM “COKER KERO STREAM” USING UREA ADDUCTION PROCESS

Abstract

Crude oil is distilled in petroleum refineries to get the useful fraction out of it. The aim of refineries is to get the useful possible product out from the last left drop of crude oil. For this the oil first fed to atmosphere distillation followed by vacuum distillation, the residue from vacuum distillation process is then fed for cracking. One such cracking is called coking as the final residue from it is coke. The kerosene obtain from this coking is called „Coker Kero‟. This project is meant to recover linear olefins (C10-C14) out of this coker kero. For this we used urea adduction process. The urea adduction process is a well known clatheration phenomenon of tunnel like structure formation of urea due to their intermolecular hydrogen bonding behavior. The structure forms a helical in presence of hydrocarbon and captures linear olefins and paraffins due to its dimensional constrain. The branched and substituted hydrocarbon will be washed off by subsequent washing with petroleum ether. The linear olefin obtain from this method can be used in many applications like making surfactant, plasticizer, synthetic lubricant etc and one of such application is to polymerize it to form ultra high molecular weight drag reducing agent used for pipeline transportation of crude/ petroleum product.