Graver Technologies provides high performance filtration technology to meet the requirements for ultrapure chemicals.
The manufacture of very small electronic components, referred to as semiconductors, includes devices such as transistors, capacitors, resistors, diodes, LED and photocells. The different types of devices can be integrated together to form integrated circuits, or VLSI (Very Large Scale Integration) devices such as microprocessors and random access memory (RAM). The high purity processes require the use of equally high purity chemicals stripping, etching, buffering and rinsing. These processes utilize solvent-based or aqueos based chemicals and chemical mixtures, all of which must filter to nanometer levels to ensure minimal defects and result in high yield. Many of these processes may require temperature in excess of 150C which will limit the processes to materials composed only of fluoropolymers such as PFA and PTFE.
How often should gas turbine filters be replaced?
This depends on the environment and filter type; however, pre-filters are changed every 3–6 months, while final filters may bechanged once in a year or two. Monitoring pressure drop is key to determiningreplacement timing.
What factors affect the operating life of a gas turbine filter?
Here are some factors:
How do I know when a filter needs to be changed?
Differential pressure across the filter is animportant aspect in this case. If it increases beyond the set threshold, thefilter may be clogged or need cleaning or replacement.
What is pressure drop and why does it matter?
Pressure drop is the resistance to airflow through afilter. A high-pressure drop reduces turbine efficiency and increases energycosts. Selecting low-resistance filters helps improve performance.
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