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Duct burners operate in some of the most extreme environments, enduring hurricane-force winds and blistering temperatures round-the-clock. Inadequate or improperly engineered equipment often leads to issues such as failing or fractured on burners.
CFD analysis resolved a major performance issue at a natural gas plant. By identifying and correcting bypass flow in the HRSG, optimal steam and power output were restored. This showcases the effectiveness of CFD in solving complex industrial problems.
Grade 91 is a CSEF (creep strength enhanced ferritic) alloy introduced in the late 20th century for high temperature service in power boilers. ASME BPVC-II develops material properties based on time-to-rupture data after 100,000 hrs, with a safety factor of 3.5.
Tetra Engineering is excited to once again participate in the upcoming 501F Users Group Conference! Come visit our booth our engineers will be set up and ready to discuss our services for HRSGs, High Energy Piping, Cold Weather Readiness & Digital Transformation.
Tetra Engineering will once again be offering its popular HRSG training courses at a number of locations this year. Currently scheduled are sessions at several locations in the US as well as in France and in Dubai.Please click here for the full list of courses, dates, and locations
Higher demands on outlet steam conditions has led to increased use of modified low alloy materials (9-12% Cr), such as Grade 91. The superior high temperature material properties of these types of steels (strength, fatigue resistance, creep resistance, improved steam oxidation resistance) gives the designer advantages with respect to boiler reliability and thermal performance. The advantages of using this type of materials are many; however, the long-term integrity has been a concern to the industry ever since the first installations.
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