Abstract: This study focuses on ruthenium recovery from spent catalysts in petrochemical industry and proposes optimized process, equipment, and safety and environmental protection solutions through technical retrofit. After the retrofit, statistical analysis was conducted to validate performance indicators, while modern consulting methods were employed to evaluate economic and social benefits. The research ultimately recommends intelligent safety control and optimized application of chlorine-based processes in precious metal catalyst recovery. The results demonstrate significant optimization potential in the liquid chlorine chlorination method for precious metal catalyst recovery. This technical retrofit has notably enhanced ruthenium metal recovery rates, improved chlorine utilization efficiency, significantly upgraded remote control capabilities and reduced safety and environmental risks. The findings provide technical guidance for the recovery of ruthenium from ruthenium-containing waste in the petrochemical industry, facilitating circular and sustainable development.

Key words: petrochemical, precious metal catalyst, ruthenium recovery, process optimization, safety and environmental control