The Downflow Gas Contactor (DGC) reactor is a system developed by WRK Design and Services Ltd and supplied/promoted by Merrow Scientific Ltd.  The DGC reactor is one of the most efficient mass transfer devices for contacting liquids and gases.  It evolved from a novel concept of contacting a continuous liquid phase and a dispersed phase through a specially designed column inlet.  High interfacial areas are produced by exploiting a controlled hydrodynamic flow regime and do not require mechanical aids such as stirrers or baffles. 

Many industries require gas/liquid contacting in a wide range of processes and some typical examples where the DCG can be beneficial include:

Absorption, Stripping, Flotation, Ozone Treatment, Micro-bubble Generation, Oxidation, Catalytic Oxidation, Hydrogenation, Hetergeneous Reactions, Effluent Treatment, Carbonation, Fermentation, Oxygenation, Mineral Separation and more.

Properties and Benefits

• Stable bubble matrix formed
• Distinct gas-liquid interface
• Lower power consumption
• Smaller operating volume
• No foaming
• No free gas-liquid interface
• Inherently safe
• 100% gas utilisation
• Greater than 95% approach to equilibrium in very short contact times
• High and accurate control of interfacial areas
• Improved reation times and reaction specificity
• No internal moving parts
• Reduced capital and operating costs
• High gas hold-ups (50-60%)
• Tolerance to particles
• Easy scale-up without loss in efficiency
• Easy automation and control
• Batch, semi-continuous or continuous mode operation

For further detailed information please fill in the following form or visit our contact us page: