Patent ID: 8840714

Claim:
A wet scrubber useful for cleaning a process gas containing sulphur dioxide comprising: at least one spray level system for receiving an absorption liquid and for atomizing said absorption liquid, with the at least one spray level system comprising at least a first tubular portion equipped with nozzles distributed substantially evenly over a horizontal cross-section of the wet scrubber, at least a second tubular portion with nozzles distributed substantially evenly over a horizontal cross-section of the wet scrubber, and an active nozzle density of at least 0.7 nozzles/m 2 , an absorption liquid flow of at least 10 m 3 /hour per active nozzle and a Total Flow of absorption liquid to the spray level system of at least 30 m 3 /hour/m 2 ; and a control device for controlling the flow of absorption liquid to the first tubular portion independently of the flow of absorption liquid supplied to the second tubular portion.