Waste Heat Boilers
Big and Ugly
Waste Heat Recovery 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 Recovery Heat Boilers.
Altex designs and fabricates Waste Recovery 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 Recovery 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:
Our waste heat boiler packages include all essential pressure components and performance guarantees, ensuring reliable operation and full accountability for thermal and mechanical performance.
- Steam drums w/ vane-pack and cyclone separator internals, risers, and downcomers
- Thermal and hydraulic guarantees
- Mechanical guarantee
- Finite Element Analysis (FEA)
Construction:
Each unit is built with robust materials and precision welding techniques to withstand extreme thermal cycling and meet long-term operational demands.
- 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:
Our engineering process integrates industry codes, advanced modeling tools, and custom thermal design programs to deliver optimized, code-compliant waste heat recovery systems.
- 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:
We offer a range of customizable options to meet site-specific requirements, improve longevity, and enhance system protection under varying service conditions.
- Spargers, vortex breakers
- Refractory – brick and castable
- Tube ferrules
- Insulation
- Weather shrouds / rain shields
