The scrubbing system uses “patented, non-plugging, low differential pressure Horizontal spray-baffle type scrubber ” “Though both horizontal and vertical versions ( Disc and Donut Scrubber) are available, we recommend the horizontal unit which provides the greatest ease of operation and maintenance. This system can be combined with Venturi Scrubber if the gas stream has significant particulate matter.

Another unique feature of our scrubbing system is it always operates in an acidic mode. When NaOH is added to the system as a makeup reagent, it converts to sodium bisulphite back to sodium sulphite, rather than existing in the scrubbing solution as free sodium hydroxide. The same is true in case soda ash is used in place of NaOH.

Another common problem in conventional scrubbers is calcium scaling in the scrubber. The scaling magnitude is predominant in an alkaline mode of operation as calcium precipitate as calcium carbonate and calcium sulfate causing severe scale formation in the scrubber. This scrubbing system operates on the acidic mode of operation and even dramatic variations in sulphur dioxide concentration cannot take back the system to the alkaline mode of operation thus calcium precipitation is practically avoided in this design of scrubbing system.