METHOD AND DEVICE FOR CLEANING OF FILTER

摘要

A method and an arrangement for cleaning at least one of filter sheets and filter cakes in a pressurised white liquor filter 101 with spray nozzles and driving fluid. The white liquor filter 101 is used in a causticizing process in which green liquor is causticized before the white liquor filter by the addition of lime and in which it forms during the process a lime mud slurry and where the white liquor filter 101 is used to separate white liquor from the lime mud. The invention is characterised in that the driving fluid for the spray nozzle 142 is constituted principally by the filtrate that is obtained from the filter.