Designing and installing linings for Sulfur Recovery Units since the mid 1950’s.
The demands on SRUs (Sulfur Recovery Units) today are more severe than any time in the past: higher operating temperatures, more throughput, O2 enrichment, swing operations (part time air/O2), faster startups/shutdowns, stricter emission limits, etc. Materials and design approaches of yesteryear often result in unreliable performance and extended and expensive maintenance requirements. The size of today’s units combined with higher operating temperatures and swings, as well as the vessels’ high and low temperature corrosion points, create complex issues requiring careful consideration to optimize refractory reliability and performance.
Some of the critical factors that affect refractory reliability and life cycle cost include:
Air operation &/or O2 enrichment
Vessel size or diameter
Shape or geometry (ie: heads, cones, transitions, flat walls, etc)
Hotface material quality & thickness
Backup material quality & thickness
Lining construction details
Shell corrosion points (high and low)
Burner harmonics &/or flame impingement
High temperature refractory deformation
Checkerwall/choke ring construction details
External thermal protection system
Expansion accommodation (radially and linearly)
Keying action (self-supported lining designs)
Upset conditions (thermal and pressure related events)
Temperature measurement means (internal and external)
Quality and skill of the installation contractor
Thorpe’s engineers combine over 60 years of experience in material science and accepted engineering practices to develop engineered linings. We are not limited to any single supplier for material options but are able to design solutions utilizing the most appropriate materials for the job. Thorpe’s designs and recommendations are based upon solid engineering principles and real-life findings from our field inspection and maintenance activities.
Our capabilities include:
Refractory failure analysis
Existing system evaluations (for weak links in the lining)
Heat transfer calculations for different surface configurations and orientations
Proprietary thermal software modeling program (radiant and convective heat loss) for cylindrical horizontal shrouded vessels
Proprietary high temperature testing regime for severe service brick products
Expansion allowances and joint designs
Lining stabilization systems
Anchoring systems and layout details
Bill of Materials
Field Technical Advisors to assist the installation of our designs
Reaction furnaces have the capability of melting the best refractory materials available today. This includes air operated units during upset conditions or uncontrolled operation. Thorpe’s goal is to optimize lining systems via:
Three Keys to Reliability
Best Material Selection
Thorpe has been optimizing linings for Sulfur Recovery Units since the mid 1950’s!
In this unprecedented time, Thorpe wants to express its dedication to maintaining a safe and clean workplace for our employees, and consistent service for our customers. We must all take action and do our part to stop the spread of COVID-19. To effectively combat this, it’s imperative we unite with our communities and implement procedures that prioritize those around us.
Thorpe understands the situation is quickly changing, and there is no way to predict what the upcoming weeks or months may look like. We can, however, ensure our continual evaluation of COVID-19 and the alteration of preventative measures as needed. In the end, our goal is to protect our staff and continue to provide services to our customers. For more information, please contact us at (713) 644-1247.