Green force engineers presents wet scrubbing system that is designed on the principle of sieve tray scrubbing system, which is presumed to be the latest and bet. The velocity of flue gases in this system is kept extremely low so that scrubbing is most efficient. The emission norms in india are 150mg/nm3 [maxm]. However scrubbers, which have emission norms of less then 40 mg/nm3 can be supplied to desiring sugar mills. The normal pressure drop across the scrubber is 60mm. However, this can be adjusted as per existing fans of the boiler of the sugar mills. Normally no extra fan or motor is needed in this design. But in case, if existing i.D. Fan is not able to handle extra pressure drop of scrubber and ducting, replacement of i.D. Fan or additional fan is required. Efficient demister is provided in the scrubber to check extra flow of entrained water with flue gases going to the chimney. This is the on line system and operating without by pass line at many places and also fitted with backwash arrangement systems, which gives trouble free operation years together. The slurry handling does not required manual labour. The makeup water requirement is approx. 10 percent of the water in circulation. The scrubber is normally supplied in m.S. Construction. Besides green force engineers provides heat recovery system, non conventional method of waste heat recovery system etc.