Abstract: An industrial chimney for wet stack operation is provided with an internal lining system attached to the inner surface of the chimney. The internal lining system comprises construction elements, that are arranged in a pattern, such that the joints between the construction elements in the pattern at the flue gas side of the internal lining system are inclined at an angle ? of at least 5 degrees from horizontal.

Abstract: A guide vane for deflecting flue gas in a wet stack comprises a front guiding face and an opposite back face and a condensate collector for removing liquid droplets from the flue gas. The condensate collector comprises an enclosure having an inlet for entering flue gas in the front guiding face of the guiding vane, and an outlet for leaving flue gas. The enclosure defines a flow path for flue gas from the inlet to the exit, where liquid droplets will be removed from the flue gas. The condensate collector also is provided with a gutter for collecting liquid droplets separated from the flue gas.