CGS Multi-Venturi Gas Absorbers

The heart of this technology is CGS' unique MULTISCRUB deck, which is designed based on the principle of multiple venturies. The MULTISCRUB rod deck consists of a multitude of pipes placed parallel to each other at equal distances to form a certain number of parallel venturies. The number of venturies for each deck and total number of decks are selected based on your efficiency requirements. The number of venturies can easily be altered by simply removing or adding pipes to the deck to suit your application. CGS' MULTISCRUB deck can be applied to the scrubbing of particulate and/or gaseous pollutants. Unlike any conventional PACKED BED ABSORBER, CGS' MULTISCRUB-V is capable of utilizing slurries containing high concentrations of solids without plugging problems. The MULTISCRUB decks are self cleaning.

For dust removal, the gas flow can be upward, downward or horizontal to suit any desired system configuration.

For gas absorption, each MULTISCRUB deck is placed in a horizontal position to maximize efficiency. The pollutant laden gas enters the unit radially near the bottom and is directed upwards through the MULTISCRUB decks. Scrub liquor is sprayed from the top utilizing large orifice, low pressure nozzles. A turbulent contacting zone between gas and scrub liquor is maintained on top of each MULTISCRUB deck to enhance mass transfer. Intimate contact between the liquid and the gas takes place in this area in a counter current mode, resulting in the absorption of the pollutants into the scrub liquor. The cleaned gas passes through a mist eliminator, which removes most of its entrained liquid droplets, before exiting the unit. The scrub liquor flows to the integral or external sump and is recycled, in part or in whole, back to the top of the tower. At least a slip stream of the scrub liquor must be discharged out of the scrub liquor loop to get rid of the absorbed pollutants. Chemicals may be added to the scrub liquor to enhance the efficiency and/or to neutralize the absorbed pollutants.

Simultaneous particulate scrubbing and gas absorption can be achieved by incorporating a high pressure drop MULTISCRUB deck for particulate removal and a combination of required number of low pressure drop absorption decks and/or spray zone in the same unit.