Gas turbines are heavily used to drive electrical generators, compressors and pumps to generate steam in the applications like marine vessels, gas power stations, smelting plants, offshore platforms, refineries, LNG loading stations, pipelines and chemical plants. The gas turbine is a high value asset and the huge amount of air they use during operation implies that quality of air is an important element for their availability, reliability and performance. Because of the nature of end processes that are based on properly functioning turbine, needing to combat a gas turbine for a sudden outage usually leads to costly and heavy production losses. Turbine filters thus become critical solutions to avoid such situations.
The gas turbine filtration system, based on turbine filters, may have to fight salt, dust, hydrocarbons and other various contaminants and high degrees of moisture, varying temperatures and extreme conditions. Poor inlet filtration may result in erosion, foreign object damage, fouling, plugged cooling passages and fusion of the particles inside turbine, eventually causing costly downtime, or even catastrophic component damage, at worst.
Conventional filtration systems based on ordinary turbine filters are designed to minimize these failures but they are still unable to overcome cold end-corrosion and fouling to a great extent. HEPA turbine filters are getting popularity across industries due to their higher efficiency than traditional turbine filters.
Cold end corrosion is developed by a mixture of some corrosive entering the turbine in the form of liquid, gas, solid or vapor. Media filters remove solids but they are unable to stop liquid corrosives likes salt. HEPA turbine filters can easily overcome this challenge. Fouling, resulted by dirt sticking to the compressor blades, through doesn’t lead to a permanent damage, but reduces the compression efficiency, which badly impact the machine performance. HEPA turbine filters act as an ideal solution here as well.