Visbreaking of Petroleum residual fractions soaker mode

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Visbreaking of Petroleum residues is done by mild thermal cracking for production of fuel oil with reduction of viscosity, improved pour point & stability and for up-gradation of residual fractions


Salient Features

  1. •  Soaker visbreaking requires smaller furnace and less waste heat recovery equipment leading to a capital saving of 10-15 percent

    •  Fuel consumption in case of soaker visbreaking is approx 15 percent ower than that for coil visbreaking

    •  Increased cycle length

    •  To upgrade soaker visbreaking technology by providing internals in soaker drum


  1. •  Jointly developed by EIL and commercialized in IOC, Gujarat (Revamp), in 1982. Commercialized in IOC, Mathura (revamp); IOC, Haldia (Revamp); CPCL, Chennai (Revamp) KRL, Kochi; IOC Panipat, HPCL, Vizag.

    •  Recently, HPCL-Vizag has approved the licensing of the revamp of their Visbreaking unit which involves design, fabrication and installation of internals inside the soaker drum

User Industries

  1. •  Indian Oil Corporation Limited (IOCL) Gujarat

    •  Indian Oil Corporation Limited (IOCL), Mathura

    •  Indian Oil Corporation Limited (IOCL), Hadia

    •  Chennai Petroleum Corporation Limited (CPCL), Chennai

    •  Kocchi Refinery Limited (KRL), Kocchi

    •  Indian Oil Corporation Limited (IOCL), Panipat

    •  Hindustan Petroleum Corporation Limited (HPCL), Vizag

For further information please contact

Mr. Suryadev Kumar
Sr. Scientist
Indian Institute of Petroleum
Dehradun – 248 005
Email :
Phone : 0135 2525704