Many catalytic reactions rely on platinum, palladium and other precious metal catalysts. When the activity of the catalyst declines to the point that it must be replaced, the used catalyst can be sent to a refiner to recover precious metal. This 8-page paper discusses the variouis factors that should be considered when using a refiner.
This paper covers key aspects for modeling and design of batch reactors, including: heat-up and cool-down performance, sensitivity analysis for reactor parameters, boil-up rate predictions, thermal stability under exothermic conditions, control system design and loop tuning parameters, condenser rating, and process emissions predictions.
Most chemical processors use precious-metal-bearing catalysts for facilitating and/or speeding chemical reactions. These catalysts are typically composed of platinum group metals (PGMs). After a number of process cycles the catalysts lose their efficacy and must be replaced with fresh catalysts. Spent catalysts are sent to a precious-metals refiner for recovery and refining of the valuable PGMs remaining in this material. Selecting—and working with—a precious-metals refiner is critical to ensure highest possible returns and peace of mind with regard to environmental concerns. Download and read this 22-page white paper to learn more about recovering precious metals from spent catalysts.
Precious metals are often present in hydrocarbon, petrochemical, and chemical catalysts. Techniques for recovering precious metals have been around for many years; yet many catalyst owners have misconceptions about how their refining organizations work. In "The Five Myths of Refining Precious Metals", critical information is shared about the chemical processing industry:
Crucial aspects of weighing
Sampling and analysis of catalysts
Methods of catalyst recovery
What to look for in a proposal from a precious metals refiner
Understanding the cost of quality
How to ensure maximum precious metals return value
Environmental, ethical, and regulatory compliance issues