Originating in processed crude oil, arsenic has long been recognized as a severe catalyst poison. Compared to other contaminants, arsenic is a genuine poison, since it actively titrates the working catalytic sites by forming NiAs or CoAs.
Topsoe offers a number of highly efficient arsenic-trap catalysts that catch and accumulate arsenic many times more effectively than conventional hydrotreating catalysts. These arsenic guards can also be used effectively as part of a tailored hydrodemetallization (HDM) solution.
Catalysts
Catalysts
The performance catalysts we supply for this application are listed below.
CatalystsTK-41
TK-41 has very high affinity for arsenic trapping in VGO and gas oil services, where it is also able to trap Ni/V/Si. TK-41 is available in ring shape and has been developed as a first-stage guard catalyst for use in grading systems where arsenic pick-up is needed. Application Integral part of the...
CatalystsTK-49
TK-49 is a high-nickel catalyst based on an alumina carrier. It is available in a quadralobe shape, and it has been developed for use in catalyst bed grading systems, where maximum arsenic pick-up is needed. Application Catalyst grading systems.
Services
Services
The services we supply for this application are listed below.
ServicesCatalyst Loading
All plants – even those with lots of turnaround experience – can run into trouble during loading. When a problem occurs, it can lead to longer turnarounds and, in the worst case, result in an underperforming catalyst. That makes proper loading an important step in profitable plant operation. Topsoe...
ServicesGeneral Technical Service
Optimal interaction between catalyst and technology is crucial if your plant is to perform at its best. Topsoe’s General Technical Service employs the full weight of our knowledge and experience to advise, inform and guide you towards improvement. All General Technical Service is provided as in-...
ServicesPlant Assessment / Optimization
Refineries and chemical plants are complex and vulnerable to changes over time. These changes can degrade performance and impact negatively on day-to-day operations and, ultimately, your bottom line. Whether you choose a catalyst performance evaluation or full-scale process and catalyst...
ServicesSampling & Analysis
As a general rule, the more you know about a plant or unit’s operating conditions, the better you’ll be able to keep performance, cost-efficiency and profits high. Our Sampling & Analysis service is your direct route to the detailed insight it takes to make better decisions. During start-ups...
ServicesStart-up & Reduction / Activation
Starting up your plant or unit is a complicated and time-consuming procedure that involves monitoring numerous parameters and ensuring the right start-up sequencing. If not performed correctly, it can result in delays or even damage to your catalysts, unit or plant. Our Start-up & Reduction/...
ServicesTroubleshooting
Catalysts and processes normally operate smoothly, yet suboptimal performance can occur from time to time. Since most issues have multiple root causes – usually originating in external factors – the process of solving an issue can be difficult and complex. Our Troubleshooting service draws on the...
