Tag catalyst activation

Why is sulfiding necessary?

Without sulfiding, the catalyst remains inactive and cannot drive hydrodesulfurization (HDS) or hydrodenitrification (HDN) reactions. Proper sulfiding ensures the catalyst achieves full activity and longevity, preventing deactivation and maintaining fuel quality standards (sulfur <10 ppm).

How is the sulfiding process monitored?

Modern refineries use online H₂S and hydrogen analyzers to monitor sulfiding progress. The process involves:

1. Drying and wetting the catalyst bed.
2. Gradually heating the reactor while introducing the sulfiding agent.
3. Tracking H₂S concentration in the effluent gas to detect breakthrough — the point at which the catalyst becomes fully sulfided.
4. Holding at a final temperature (typically 600–660°F) until completion.

What is a Sulfiding Agent? Enhance Catalyst Performance in Refining & Petrochemicals
A sulfiding agent is a specially formulated chemical designed to introduce sulfur into catalysts and industrial systems. It plays a crucial role in optimizing catalyst activation and maintaining high performance in refining and petrochemical processes. By ensuring catalysts reach their ideal sulfided state, sulfiding agents help improve efficiency, extend catalyst life, and enhance overall process reliability.