Journal of
Chemical Engineering and Materials Science

  • Abbreviation: J. Chem. Eng. Mater. Sci.
  • Language: English
  • ISSN: 2141-6605
  • DOI: 10.5897/JCEMS
  • Start Year: 2010
  • Published Articles: 77

Full Length Research Paper

Addition of carbon tetrachloride as propulsion to the thermal cracking reactor based on the amount of coke formed in different coil outlet temperatures (COT)

Afshin Davarpanah
  • Afshin Davarpanah
  • Department of Petroleum Engineering, Science and Research Branch, Islamic Azad University, Science and Research Branch, Tehran, Iran.
  • Google Scholar


  •  Received: 04 November 2016
  •  Accepted: 29 December 2016
  •  Published: 31 January 2017

Abstract

Nowadays, polyvinyl chloride (PVC) is the most usual plastic. Therefore, to make PVC, its monomer called vinyl chloride (VCM) must be produced first. It is a severely endothermic reaction that is done in an ethylene dichloride thermal cracking reactor within a temperature range of 680 to 758°K and pressure range of 2500000 Pascal. Thus, this cracking reaction changes into hydrochloric acid and VCM. In production unit, monomeric chloride has the main and principal role as the core of the process of thermal cracking that occurs in the furnace. Increased wall temperature causes boil gas mixture and pyrolysis reactions. Regarding simulation, the results showed that the number of pyrolysis produced composition with maximum concentration in the length of the reactor. This illustrated that these compositions participated in secondary reactions. Furthermore, by increasing the amount of coil outlet temperatures, the amount of formed coke will increase. If carbon tetrachloride is considered as the chlorine radicals, it has an important role as the motivator in the cracking procedures, radicals causing an enhancement in VCM production.

Key words: Carbon tetrachloride, conversion factor, coke, coil outlet temperatures, thermal cracking.