Low-Mercury & Mercury-Free Catalyst Unit Maintenance

Targeted at severe HCl corrosion in acetylene hydrochlorination (VCM synthesis) units, this service upgrades and renews reactor tubes, valves, fittings, and sampling loops—deploying Hastelloy or specialty stainless alloys at critical sections to restore gas-path sealing and flow capacity. Each C₂H₂, HCl, and N₂ mass flow controller is individually calibrated to guarantee multi-channel ratio consistency and repeatability. Following overhaul, the entire system undergoes pressure-hold leak testing alongside synchronized commissioning of the caustic tail-gas scrubber and safety interlocks for zero-leak startup. Services cover legacy unit retrofits, OEM spare parts supply, and periodic inspections to minimize unplanned downtime.