HF Alky Isobutane Exchanger Bypass Leak
Learnings from Incidents, HF Alkylation
In 2021, hydrofluoric acid vapors were detected by the safety instrumented subsystem (SIS) line of sight laser detection system, which activated both the rapid acid dump system and the fire suppression/unit deluge system. The source of the leak was determined to be the bypass line around the isobutane recycle cooler. Topics discussed: Residual Elements, CMLs for high RE, PMI for high RE, low flow and process deadleg identification.
Speaker:
Mark Geisenhoff, Flint Hills Resource
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Renewable Naphtha
Sustainability, Gasoline Processing
Facilitators:
Steve Philoon, Honeywell UOP
Matt Hutchinson, Axens
Speakers:
Christian Arnoux, Axens North America
Robert Auers, RBN Energy
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Casting Quality Issues in HF Alky Valves
HF Alkylation
Over the last few years, there has been an increase in through body leaks on cast HF Alkylation valves. This presentation will review several real life examples of casting failures on valves in HF Alkylation service including cross sections of the failure location. These failures have occurred on both low RE carbon steel and Alloy 400 (M35-1) castings. Some common causes of casting failures will be reviewed including sand inclusions, porosity and varying levels of shrinkage. Common locations of casting quality issues with HF Alkylation valves will be discussed including the bottom bowl area and the body to end flange transition on Alloy 400 plug valves. The presentation will also cover some of the methods that are being implemented in the industry to improve the casting quality of HF Alkylation valves along with efforts to standardize and consolidate requirements for these valves.
Speaker: Michael Alford, Marathon Petroleum
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Case for Carbon Intensity Improvement for Gasoline Units
Sustainability, Gasoline Processing
The carbon intensity of Reforming Units is inherently one of the higher processes in the refinery due to its energy requirements. This presentation will explore ways to improve carbon intensity with various equipment upgrades, as well as showing the positive impact that optimal catalyst performance can have on reducing Carbon Intensity.
Speakers:
Rhett Finch, Marathon Petroleum
Sujoy Ganguly, UOP
Tyler Krupp, Axens North America
Yaz Seif, Marathon Petroleum Company
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