Gas scrubbing

Venturi scrubbers are used to remove particulate matter from a gas stream. A „Venturi Scrubber“ consist of a contact section called a venturi section in combination with a droplet separator section.

Exhaust gas with dust is fed into the venturi section where it passes through a water mist at the venturi throat at high velocity. This results in thorough mixing of water droplets and dust particles which agglomerate to form larger particles which are subsequently removed from the gas in the separator section.
The water supply units and spraying systems allow recirculation of water with high dust contents. These systems are used for cleaning particulate matter from exhaust gas with stringent emission level, soluble dust mainly in the mineral and chemical industry.

Packed tower scrubbers are used to remove particulate and / or vapor contaminants from an exhaust gas stream by way of dilution or absorption.
A packed tower is an efficient method of carrying out mass transfer between gas and liquid phases. Packed tower scrubbers incorporate packing media
to facilitate intimate contact between a scrubbing liquid and gas to be scrubbed.
Applications are: reduction of dust or gaseous emission levels, product recovery, air pollution and odor control.
In countercurrent scrubber operation, the gas flows upward through the packing material, while the liquid flows downward by gravity through the
packing material. The liquid wets the surfaces of the packing material, providing a large amount of surface area for diffusion of one or more components of the gas stream into the liquid stream, thereby cleaning the gas.