DE-ICING OF PULSE FILTERS

摘要

PROBLEM TO BE SOLVED: To provide methods and systems for the de-icing of pulse filters, such as those used in turbomachinery.SOLUTION: A method can include: coupling a filter bag to a pulse filter 204 such that the filter bag is in a contracted position, the filter bag having a complementary geometry relative to the pulse filter 204 such that the filter bag occupies an airflow cross-section of the pulse filter 204, where the filter bag is composed of one of a hydrophilic material, a hydrophobic material and an oleophobic material; and pulsing compressed air through the pulse filter 204 and the filter bag during operation of the gas turbine 104 such that the filter bag expands to dislodge ice from an outer surface of the filter bag.SELECTED DRAWING: Figure 2