Mercury Adsorber

Mercury present in natural gas can corrode aluminium plate-fin liquefaction cold boxes, leading to equipment leakage and scrappage. The mercury adsorber is designed specifically for the removal of gaseous mercury and serves as an indispensable safety protection device for LNG liquefaction.

Working Principle

Feed gas passes through a bed of sulphur-impregnated activated carbon or precious-metal adsorbent. Elemental mercury reacts with the adsorbent and is retained within the bed. The gas with qualified mercury concentration at the outlet protects the downstream cryogenic cold box.

Core Advantages

✅ High adsorption capacity, outlet mercury content ＜0.01 μg/m³ 

✅ Switchable twin-tower arrangement, allowing adsorbent replacement without shutdown 

✅ Vertical vessel design with uniform flow field for stable adsorption efficiency 

✅ Integrated skid package equipped with sampling ports and differential pressure monitoring 

✅ Suitable for high-pressure natural gas service conditions

Technical Parameters

Design Pressure: 3.0~10 MPa Medium: Purified natural gas Adsorbent: Sulphur-impregnated activated carbon

Applications

Pre-treatment for LNG liquefaction, protection of aluminium cold boxes, treatment of mercury-containing gas sources