Filter Concepts for Gas Turbines - Overview and Field Report on Utility Value Enhancement with Three-stage Filtration

摘要

Responsible deployment of the fossil resources at our disposal demands their maximally efficient and eco-neutral use while simultaneously factoring in their cost-efficient utilisation. To reconcile both these aspects is the paramount goal governing the development efforts of turbine manufacturers, system development engineers and system operators alike. From a system operator's viewpoint, it is primarily downtimes that are rated as lost profit, and must therefore be avoided. High levels of availability and long running times for the systems concerned are the declared goals. In particular, downtimes required for washing the compressor stages inevitably cause nonproductive periods, which need to be minimised or altogether avoided. The aim of the washing routines is to remove any coatings and deposits on the blading. The cause for any such deposits will usually be inadequate intake air filtration. Innovative concepts for enhancing filtration quality fey means of three-stage filter systems were presented in [1].