Share Price

Visbreaking

Since 1990, Amec Foster Wheeler and UOP have designed and licensed more than 50 visbreaking units.

Visbreaking is a non-catalytic thermal process that converts atmospheric or vacuum residues via thermal cracking to gas, naphtha, distillates, and visbroken residue. Atmospheric and vacuum residues are typically charged to a visbreaking unit to reduce fuel oil viscosity and increase distillate yield in the refinery.

Key benefits:
  • High sulphur fuel oil reduction
  • Reduces distillate cutter stock requirements, hence distillate available for more valuable transportation fuels
  • Low cost upgrading.
There are two types of visbreaking technology that are commercially available: the ‘coil’ or ‘furnace’ type and the ‘soaker’ process. Together with UOP, we offer both types. The coil visbreaking unit design achieves the desired conversion and viscosity reduction within a dedicated soaking coil in the furnace. We have engineered a number of soaker type visbreaking units in which the majority of conversion reactions take place over a longer residence time in a soaker drum.

Visbreaking units can be configured with vacuum flashers on the tar stream to produce more heavy gas oil distillate and can also be configured as two-stage visbreaking/thermal cracking unit for maximum yield of lighter distillates. A number of the units we have designed have integrated visbreaking and thermal cracking sections.

Technology

Amec Foster Wheeler has extensive knowledge and experience in all refining processes and technologies

Return to topTop