DRIP ARRESTOR SEPARATOR FOR HIGH SPEED GASES AND HEATING OF SCRUBBER GASES

摘要

The invention relates to a method and device for washing of suphur oxides (SOx) produced after the combustion of waste gases where water-lime suspensions and a drip arrestor separator are used improving the efficiency. In the preferred design solution, a single-passage counterflow wet lime scrubber, preferably with a drip irrigated zone with a height of less than 6 m operates with gas flow speeds larger than 4.5 m/s. The vertical flow of fumes is freed from an essential part of the suspension drops and deflected to effective elimination of the residual moisture by means of a drained moisture arrestor for a horizontal flow. The drip arrestor separator is of single-passage type having separate plates restricting the collision of drops with the upper walls, e.g. the vault of the scrubber allowing periodical washing away. The use of vertically orientated rotational heat-exchanger with a horizontal shaft simplifies the design and the occupied space, also considerably reducing the requirements for pipeline fittings.