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 for Waste Heat Boilers.
Altex designs and fabricates 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)
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
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.
Options and Trim:
- Spargers, vortex breakers
- Refractory – brick and castable
- Tube ferrules
- Insulation
- Weather shrouds / rain shields
