Patent ID: 8999275
Filing Date: 2015-04-07
Classification: B01D,Y02E

Abstract:
1. A method for cleaning and for monitoring a cleaning of a process gas passing through a wet scrubber, the wet scrubber comprising an inlet zone, a contact zone and an outlet zone, the contact zone divided into at least two sections, the process gas flowing through the inlet zone and into the contact zone for mixing with an absorption liquid within the wet scrubber, the absorption liquid absorbing at least part of a sulphur dioxide content of the process gas, the process gas then flowing out of the wet scrubber via the outlet zone, the method comprising: measuring a concentration of sulphur dioxide in at least a first measuring point corresponding to a first section of the at least two sections of the contact zone to obtain measurement information; and comparing the obtained measurement information to a reference value for determining a local sulphur dioxide removal performance of the first section.