Oxygen contact desorbs nickel from the ruthenium catalyst, preventing deterioration and maintaining high activity during partial hydrogenation.
Absorption zone removes hydrogen sulfide from FCC absorber off-gas before selective hydrotreating reactor processing.
A single-atomic Ce-doped alumina carrier anchors active metal components to maintain metallic properties during high-temperature thermochemical reactions.
Neutralizing sulfonic acid groups on macroporous resin with metal ions prevents acid loss and reactor corrosion while maintaining high dimer selectivity.
Direct heat exchange between the de-ethanizer column and first C2 splitter reduces refrigerant usage in ethylene preparation.
Hydrocarbon extraction solvent recovers hydrogen chloride from alkylation effluent, preventing substance loss during catalyst regeneration.
An eggshell catalyst concentrates nickel in a peripheral crust to improve activity while reducing metal content and sulfur poisoning.
Dual-pressure distillation columns separate unsaturated hydrocarbons with minimal energy consumption.