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CCR Naphtha Reforming Regenerator Side Turnaround Atmospheric Regenerator Part 1 of 2

This article focuses on the turnaround (TA) of a UOP CCR PlatformingTM regenerator and covers activities related to the atmospheric regenerator, although, much of what’s written here can be applied to UOP CycleMaxTM, as well.  We’ll focus on the preparation and removal of disengaging hopper and regenerator inner screen. A separate article(s) will follow to […]

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CCR Naphtha Reforming Regenerator Side – Zone by Zone: Surge Hopper and Reduction Zone

The final topic in the “Regenerator Zone-by-Zone” series will be on the Reduction Zone (RZ). It is noted that there have been several design and equipment improvements with the UOP CycleMaxTM RZ vs. the older Atmo units, but the goal is still the same, to complete the reduction of an oxidized catalyst prior to it […]

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CCR Naphtha Reforming Regenerator Side – Zone by Zone Explained: Air Drying Zone

Introduction: Continuing from my previous article on the CCR Regenerator – Chlorination Zone we’ll now move on to the Air Drying Zone (ADZ). On the regenerator side of the CCR we’ve covered the Disengaging Hopper (DH), Burn Zone (BZ) and Chlorination Zone (CZ). Provided these steps were carried out correctly, the catalyst entering the ADZ […]

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CCR Naphtha Reforming Regenerator Side – Zone by Zone Explained Chlorination Zone

Introduction: Continuing the conversation on  CCR Regenerator – Burn Zone, we’ll  move on to the Chlorination Zone (CZ). In this article we’ll use the UOP CCRTM  Atmospheric Regenerator (commonly referred to as “Atmo”) as a primary reference.  It’s noted there are some physical layout and equipment differences between the UOP CycleMaxTM and the older Atmo […]

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CCR Naphtha Reforming Regenerator Side – Zone by Zone Explained Burn Zone

Introduction: Prior to continuing with turnaround (TA) on the regenerator side, it seemed appropriate to explain the purpose and operation of each zone in the regenerator.  I’ll explain how inner screen fouling in the Burn Zone (BZ) depletes O2 in the Chlorination Zone (CZ) and the consequences. I’ll discuss how and when to correctly set […]

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CCR Naphtha Reforming | Unit Turnarounds III | Rx Side Inspection – Cat Collector and Lift Lines

Introduction This article is the third on CCR Naphtha Reforming and moves forward from CCR Rx Turnaround I and Turnarounds II covering the inspection of catalyst collectors, both internal and external.  The article will discuss how to avoid catalyst flow obstructions and important considerations on lift line evaluation and change out.  We’ll share frequently overlooked […]

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CCR Naphtha Reforming Unit Turnarounds II Rx Internals Inspection w/ Upflow Centerpipe

This article is the second in a series on Rx Internals Inspection but with focus on equipment underneath the coverdeck.  Although, I’d like to touch on a broader TA topic that merits reinforcement with contractors and refinery personnel alike – protecting gaskets and seating surfaces. Turnarounds bring a level of activity with the movement of […]

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CCR Naphtha Reforming: Radial Flow Reactors Catalyst Bed Pressure Explained – Avoiding Rx Internals Damage

Introduction: Before continuing with CCR Naphtha Reforming Turnarounds it seemed appropriate to explain the cause and effects of unchecked thermal cycles and high catalyst bed pressure. This information is vital to understanding how to mitigate Rx internals damage and improves the ability of operators and engineers to evaluate unit equipment and catalyst performance more effectively.  […]

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CCR Naphtha Reforming Refinery Unit Turnarounds — Rx Internals Inspection w/ Upflow Centerpipe

Introduction Scheduled turnarounds (TA’s) on CCR naphtha reforming units are infrequent with customers targeting every 5+ years, and frequently hitting their targets.  That leaves little opportunity for many engineers and operators to participate in these events. So, it seemed appropriate to generate an article that shares what I’ve experienced during my career, while keeping each […]

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What is Catalyst Pinning?

Feedback on my last blog “Can Feed Sulfur be Both Good and Bad,” led to our new topic on catalyst pinning. This is a great topic suggested by a LinkedIn connection.  With that, I went to the Internet and searched for articles published on “Catalyst Pinning”. I found several, but they were all scholarly articles that […]

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