Waste Heat Boilers

Big and Ugly

Waste Heat Boilers are a critical component in Waste Heat Recovery Systems and must be suitable to resist inlet gas temperatures exceeding 2600°F. Refractory lining and tubesheet design are critical in ensuring metal temperatures and stresses do not exceed Code and design limits.

Altex designs and fabricate Waste Heat Boilers to ASME VIII-Div.1 and ASME I Codes. FEA can be used in some cases for non-UHX tubesheet design, complicated geometries, and extreme temperature gradients.

 

Above 2-pass Waste Heat Boiler w/ integral Steam Drum is 14.75-ft wide x 35.5-ft long x 22.1-ft high and weighs 164-tons empty.

Scope of Supply:

  • Steam drums w/ vane-pack and cyclone separator internals, risers, and downcomers
  • Thermal and hydraulic guarantees
  • Mechanical guarantee
  • Finite Element Analysis (FEA)
  • Spargers, vortex breakers
  • Refractory – brick and castable
  • Tube ferrules
  • Insulation
  • Weather shrouds / rain shields

Construction:

  • Carbon Steel SA-179, SA-192, or 1-1/4 Cr-Mo T11 tubes, typical
  • Weld-overlay and cladding available
  • Strength-welded tube-tubesheet joints, including `deep-J’ groove
  • Inner-bore welded tube-tubesheet joints - cold (shell) side of tubesheet
  • UHX or ASME I flexible “knuckle” style tubesheets
  • 1% slope typical
Waste-construction-section
engineering and Design section

Engineering & Design:

  • ASME Section I and Section VIII-Div.1
  • Typically, non-code tubeside
  • HTRI and in-house thermal design programs
  • PV Elite, Code Calc, Compress, Nozzle-Pro, FE Pipe, 661 Pro, Flanged & Flued for mechanical.
  • 3D modeling using Autodesk Inventor
  • 2D fabrication drawings using AutoCAD.