| 摘要 |
Method for use when beating an electro filter (203) comprising at least one emission electrode (207) and at least one precipitation electrode (206), past which precipitation electrode (206) a first gas to be cleaned from particles is caused to stream in a downstream direction (204) in one or several gas passages (208). The invention is characterised in that a stream (210) of a second gas temporarily is applied in the or those gas passages (208) for the first gas that pass the said precipitation electrode (206) while the beating of the precipitation electrode (206) is ongoing, and in that the stream (210) of the second gas is applied from a position downstream of the precipitation electrode (206) and so that it streams in an upstream direction, counter-current to the stream of the first gas, and thereby counteracts the stream of the first gas past the precipitation electrode (206). |
