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Oil Refinery Upgrade for Sulphur Removal

The refinery naphtha unit was producing a blending stock with high residual sulphur content. Costain was engaged to develop a solution to produce sulphur-free gasoline.

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Total UK

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Advisory and Concept Development
Specialist Design
Complex Project Delivery
Project Management


Sulphur removal

from gasoline product

Integration of new unit

into existing site layout

Costain developed the concept and carried out front end engineering design, which comprised:

  • The development of a UOP schedule A package. Work included procurement of long lead items, generation of project sanction estimate, HAZOP studies, development of layouts and generation of construction philosophies
  • The development of the integration of the new unit into the existing refinery such that tie-ins could be made at the next shutdown
  • Detailing of offsite modification to enable reallocation of tankage and pumping facilities
  • Detailing of offsite facilities to enable online blending of gasoline

Following the completion of the front-end engineering design, Costain was awarded a contract for the execution of the detail design, procurement services and construction management for the implementation of the project.

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