Localization of supercritical units currently designed, ultra-supercritical units are equipped with pre-filter. Prefilter are tubular filter element filter, i.e. the filter a number of filter element installed, the water enters from the outside of each filter element, the center of a porous filter element of fluid in the pipe, the impurities are trapped in the filter element surface. Pre-filter filter element There are two main forms, while laying the filter element with a wound with a folding filter element when not laying. Folding precision filter element when the unit starts 10μm, during normal operation the filter element precision 2μm or 5μm. With my years of experience and with reference to foreign filtration technology information development and production of folding filter element can effectively control water condensation of silicon metal and other solid contaminants. Effectively avoid the unit starts to form at high temperature oxide dissolved state, greatly reducing start-up time of the unit, effectively shortening the water reached the required start-up time during the unit. I. Features ● high precision, large filtration area, through large and small diameter devices, small footprint; ● using the threaded connection, easy installation; ● can be cleaned using a long life cycle. Second, the technical parameters of the filter element to start running index content filter element filter element shape 2.5 "× 70" 2.5 "× 70" filter element filter element material PP PP PP reinforced skeleton reinforced PP filtering accuracy 10um, 2um, 5um, filter area 6.5m2 6.5 m2 filter element in the form of folding folding maximum temperature 60 ℃ ~ 80 ℃ 60 ℃ ~ 80 ℃ Maximum flow 3.5 ~ 4.5m3 / h / root 3.5 ~ 4.5m3 / h / root