Wet scrubber and a method of cleaning a process gas

摘要

A wet scrubber (1) and a method of using the wet scrubber to clean a process gas containing sulphur dioxide comprising at least one spray level system (20) with atomizing nozzles (38) to which an absorption liquid is supplied for atomization by the nozzles (38). The method comprises operating the spray level system (20) in at least a first operating mode with an active nozzle density of at least 0.7 nozzles/m2, an absorption liquid flow of at least 10 m3/hour per nozzle and a Total Flow of at least 30 m3/hour/m2.

主权项

1. 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/m2, an absorption liquid flow of at least 10 m3/hour per active nozzle and a Total Flow of absorption liquid to the spray level system of at least 30 m3/hour/m2 ; 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.