Sulfur Recovery Units (SRU)
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Sulfur Recovery Units
Whether developing a maintenance plan or planning a turnaround, our clients partner with STRUCTURAL to provide services that solve problems and improve their investments. Our work is typically performed on a wide variety of sulfur recovery unit (SRU) elements, including:

  • Molten Sulfur Containment Structures (Sulfur Pits)
  • Sluiceways
  • Furnaces & Heaters
  • Condensers
  • Equipment Foundations
  • Control Rooms
Sulfur Pit Repair
Installation of precast concrete roof on sulfur pitDeterioration and damage to subsurface molten sulfur containment structures, including trenches, sumps and pits, can impact the safety and operations within sulfur recovery units. Problems, if left unaddressed, can become structural in nature, diminishing the integrity of the molten sulfur containment structure.

STRUCTURAL applies technical know-how and industry-leading experience to develop new ways to extend the life of these containment structures. Our sulfur pit solutions include:
 
  • Inspection & Evaluation
  • Carsul & Sulfur Cake Removal
  • Slab & Roof Repairs
  • Precast Roof Panels 
  • Protective Liners
  • Structural Liners
  • Steam Coil Replacement
Featured Projects
Advanced Pit Within a Pit Liner Extends Service Life
A 1,400-square-foot sulfur pit at a North American refinery required immediate assessment after a partial roof collapse. Following a visual inspection by STRUCTURAL, a full repair was recommended. Because an unscheduled outage creates challenges, however, the owner opted to repair only the collapsed portion and delay the full repair for a scheduled outage.   Read more
Full Sulfur Pit Restoration
As a by-product of the hydrocarbon refining process, molten sulfurous compounds are generated, one of which is elemental sulfur.   Read more
Pit within a Pit
A major refining company in Texas had a subsurface reinforced concrete sulfur pit that began to experience degradation when water started to enter the pit through cracks in the concrete walls.   Read more

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