The Downflow Gas Contactor Reactor

The Downflow Gas Contactor Reactor (DGC) is one of the most efficient gas liquid contacting devices available for the process industries. It has evolved from a novel concept of contacting a continuous liquid phase with a dispersed gas phase through a specially designed entry section.

Under operating conditions large quantities of reaction gas and slurry liquid are introduced via a proprietary reactor inlet to create a well dispersed gas/liquid dispersion of high gas hold-ups and very high gas/liquid mass transfer area (1000 m²/m³ to 6000 m²/m³ depending on bubble sizes). The high gas/liquid ratio throughout the dispersion in the column results in excellent gas-liquid contacting and enables the maximum possible gas-liquid mixing.

The gas/liquid dispersion is maintained at a desired level within the reactor preventing gas bubbles flowing through the outlet of the reactor and thus ensuring 100% gas utilisation.

Current Patent Applications

• UK Patent Application No. 2465412 – “Biodiesel production in a Downflow Gas Contactor Reactor.” (Published in May 2010).
• UK Patent (under application): “Carbon Entrapment  from Air and Biogas Enhancement using a DGC Reactor”.

Many industries require gas/liquid contacting in a wide range of processes and the DGC can be beneficial to all of them.

For all applications of the DGC, WRK will provide the following services:

• Process development
• Basic process design
• Detailed engineering and supply of key-equipment
• Modular plant construction
• Commissioning and start-up services

Contact us now if you would like further information on the DGC reactor and how our services can help you.