Technical & Troubleshooting Guides
Practical sizing, troubleshooting, and technical guidance for molecular sieve systems.
How Do You Know When to Replace a Dechlorination Catalyst Guard Bed?
There's no fixed calendar date for replacing a dechlorination catalyst guard bed. This guide covers the three signals that actually matter — outlet chlorine breakthrough, organic chloride slip even when HCl looks clean, and rising pressure drop from green oil fouling — and why watching HCl alone isn't enough.
How Do You Know When to Replace Oxygen Generator Molecular Sieve in a PSA Oxygen Concentrator?
Learn the practical warning signs — from declining oxygen purity to bed attrition — that indicate it's time to replace Oxygen Generator Molecular Sieve in a PSA system.
3A Molecular Sieve for Transformer Oil Purification: How Online Dehydration Works
Online molecular sieve purification systems continuously remove moisture from transformer oil without taking the transformer out of service. This guide explains how 3A Molecular Sieve dehydrates oil at the molecular level, where 4A fits as an alternative, and how this differs from desiccant breathers and oil reclamation.
How Do You Know When to Replace 5A Molecular Sieve in a PSA Oxygen Generator?
PSA oxygen systems regenerate 5A molecular sieve on every pressure cycle — but regeneration isn't the same as replacement. Here's how to tell the difference before purity drops for good.
How Do You Know When to Replace an Ammonia Refining Desulfurization Catalyst?
The practical warning signs that tell you an Ammonia Refining Desulfurization Catalyst needs replacing — before sulfur breaks through into your ammonia synthesis loop.
How Do You Know When to Replace an Iron Oxide Desulfurization Catalyst?
Learn the operating signals — outlet H₂S, temperature profile, pressure drop — that indicate an Iron Oxide desulfurization catalyst bed needs replacement, and the factors that shift its service life.
How Do You Know When to Replace Molecular Sieve in an Air Separation Unit (ASU) Pre-Purification Bed?
Rising pressure drop and CO2/moisture breakthrough are the two most reliable signs an ASU pre-purification molecular sieve bed needs replacement — but neither should be judged on a single reading. This guide walks through the warning signs, what's actually degrading inside the bed, and how to separate normal aging from a genuine end-of-life signal.
How Often Should You Regenerate a Co-Mo Hydrogenation Catalyst Before Replacement?
How many times can you regenerate a Co-Mo hydrogenation catalyst before replacement makes more economic sense? A breakdown of deactivation mechanisms, warning signs, and the regeneration-vs-replace decision.
What Regeneration Temperature Does a COS Adsorbent Bed Need to Avoid Early Breakthrough?
A COS adsorbent bed that breaks through earlier than usual often isn't at end of life — it's the regeneration temperature that's drifted off spec. This guide covers how thermal swing regeneration works, what happens when purge temperature runs too low or too high, and how to verify your setup is fully reactivating the bed.
How Do You Know When to Replace Dry Adsorbent? H2S and Moisture Breakthrough Warning Signs
How to recognize early H2S and moisture breakthrough signs in a dry adsorbent bed, what operating conditions shorten service life, and when to plan replacement.
How Often Should You Replace Activated Alumina in a Molecular Sieve Guard Bed?
Activated alumina guard beds protect your molecular sieve system, but they don't last forever. Here's how to tell the difference between a bed that needs regeneration and one that needs full replacement — before a saturated guard bed lets moisture or oil straight through to your CMS or PSA oxygen system.
How Many Times Can You Regenerate CD Adsorbent Before Fresh Replacement Makes More Sense?
CD adsorbent is rated for N₂ purge regeneration up to 340°C — but regenerable doesn't mean unlimited. Here's how to read your own operating data to decide when another cycle still makes sense, and when a fresh charge is the safer call.