audi Aramco (Dhahran) initiated the contracting process for a major environmental upgrade at the Wasit Gas Plant, aimed at enhancing sulfur recovery efficiency. The solicitation of interest for the EPC contractor has been issued, with submissions due by April 10, 2025. The subsequent contracting timeline includes an invitation for proposals in May 2025, a bid closing in August 2025, and the awarding of the Lump Sum Turnkey (LSTK) contract in January 2026, with work commencing immediately thereafter. These developments represent a significant step in strengthening operational efficiency and environmental compliance.
The initiative includes the installation of four state-of-the-art Tail Gas Treatment Units (TGTUs) to enhance sulfur recovery efficiency to 99.9%. Each unit will feature a tail gas burner, quench column, absorber column, stripper column, and associated equipment. Additionally, comprehensive control system upgrades will be implemented to optimize process performance. These enhancements are designed to improve overall recovery efficiency and minimize sulfur emissions.
Further infrastructure improvements encompass the integration of dedicated regeneration units, reducing gas generators for hydrogen and carbon monoxide production, and modifications to key utility systems. A new cooling water system, along with an advanced oily water and stormwater management system, will be established. The scope also includes the construction of a new substation and PIB, as well as the removal of existing coalescers and sulfur seal leg funnels to streamline operations. By increasing sulfur recovery efficiency from 99.3% to 99.9+%, these enhancements will significantly reduce sulfur dioxide (SO₂) emissions, which currently exceed 3,000 mg/Nm³ (~1,100 ppmv).
The implementation of advanced treatment technologies will enable compliance with stringent environmental regulations while supporting broader sustainability objectives. This investment underscores Saudi Aramco’s commitment to responsible energy production and environmental stewardship.
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