Tangential scrubbing tower

It is similar to the spray tower, but has many spray pipes or nozzles installed tangentially at more than one level, generally at intervals of 1000-1500 mm in vertical height. There are four nozzles at 90 ° at every level for spraying liquor. The tangential sprays clean the tower inner walls continuously and do not allow bnild np of layers of salt deposits. 

These are used in phosphatic fertiliser industries where silica/other particulate matter tend to deposit on the walls of the tower. The vendor should specify the number of nozzles, flow rate through each, circulation pump capacity (it should have semi-open impeller) and MOC of pipes, valves, etc. 

Polypropylene and HDPE can be considered as MOCs. The pipes and valves should be pressure tested before installation. 

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