scholarly journals Technology Review of Modern Gas Turbine Inlet Filtration Systems

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Melissa Wilcox ◽  
Rainer Kurz ◽  
Klaus Brun
Keyword(s):  
Gas Turbine ◽  
Life Cycle Cost ◽  
Ambient Air ◽  
Life Cycle Cost Analysis ◽  
Air Filtration ◽  
Successful Operation ◽  
Filtration System ◽  
Operational Life ◽  
The Many ◽  
Selection Of

An inlet air filtration system is essential for the successful operation of a gas turbine. The filtration system protects the gas turbine from harmful debris in the ambient air, which can lead to issues such as FOD, erosion, fouling, and corrosion. These issues if not addressed will result in a shorter operational life and reduced performance of the gas turbine. Modern day filtration systems are comprised of multiple filtration stages. Each stage is selected based on the local operating environment and the performance goals for the gas turbine. Selection of these systems can be a challenging task. This paper provides a review of the considerations for selecting an inlet filtration system by covering (1) the characteristics of filters and filter systems, (2) a review of the many types of filters, (3) a detailed look at the different environments where the gas turbine can operate, (4) a process for evaluating the site where the gas turbine will be or is installed, and (5) a method to compare various filter system options with life cycle cost analysis.

scholarly journals Selection of the Most Advantageous Gas Turbine Air Filtration System: Comparative Study of Actual Operating Experience

1985 ◽  
Author(s):  
Seyed I. Gilani ◽  
Musadaq Z. Mehr
Keyword(s):  
Gas Turbine ◽  
High Efficiency ◽  
Operating Experience ◽  
Air Filtration ◽  
Actual Operating ◽  
Filtration System ◽  
Clean System ◽  
Gas Turbine Compressor ◽  
Selection Of ◽  
Pulse Jet

This paper discusses relative merits of three types of air filtration systems used by Sui Northern Gas Pipelines Ltd. (Pakistan), on its gas turbine compressor packages. These Filtration systems are: (i) Two stage inertial plus auto oil bath type multi-duty filters by AAF used on Saturn Mark–I packages manufactured by Solar Turbines Inc. (ii) Three stage high efficiency barrier filters by AAF used on Centaur packages by Solar. (iii) Single stage pulse-jet self-cleaning filter by Donaldson again used on a Centaur package. The selection is primarily based on package performance data collected over a 15 month period analyzing power loss due to fouling effects and related operation and maintenance costs for the three systems. The Company’s operating experience indicates that on new installations the pulse clean system offers the best advantage both in terms of filtration costs as well as availability of additional horse power when operating under moderate to severe environmental conditions.

Gas Turbine Inlet Filtration System Life Cycle Cost Analysis

2011 ◽  
Author(s):  
Melissa Wilcox ◽  
Klaus Brun
Keyword(s):  
Life Cycle ◽  
Cost Analysis ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Life Cycle Cost ◽  
Lifetime Cost ◽  
Life Cycle Cost Analysis ◽  
Turbine Inlet ◽  
Filtration System ◽  
System Life

Gas turbine inlet filtration systems play an important role in the operation and life of gas turbines. There are many factors that must be considered when selecting and installing a new filtration system or upgrading an existing system. The filter engineer must consider the efficiency of the filtration system, particles sizes to be filtered, the maintenance necessary over the life of the filtration system, acceptable pressure losses across the filtration system, required availability and reliability of the gas turbine, and how the filtration system affects this, washing schemes for the turbine, and the initial cost of any new filtration systems or upgrades. A life cycle cost analysis provides a fairly straightforward method to analyze the lifetime costs of inlet filtration systems, and it provides a method to directly compare different filter system options. This paper reviews the components of a gas turbine inlet filtration system life cycle cost analysis and discusses how each factor can be quantified as a lifetime cost. In addition, an example analysis, which is used to select a filtration system for a new gas turbine installation, is presented.

Evolution of Gas Turbine Intake Air Filtration in a 420 MW Cogeneration Plant

2014 ◽  
Author(s):  
Steve Ingistov ◽  
Michael Milos ◽  
Rakesh K. Bhargava
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Economic Benefits ◽  
Cogeneration Plant ◽  
Air Filtration ◽  
Air Filter ◽  
Filter System ◽  
Turbine Performance ◽  
Filtration System ◽  
Operational Data

A suitable inlet air filter system is required for a gas turbine, depending on installation site and its environmental conditions, to minimize contaminants entering the compressor section in order to maintain gas turbine performance. This paper describes evolution of inlet air filter systems utilized at the 420 MW Watson Cogeneration Plant consisting of four GE 7EA gas turbines since commissioning of the plant in November 1987. Changes to the inlet air filtration system became necessary due to system limitations, a desire to reduce operational and maintenance costs, and enhance overall plant performance. Based on approximately 2 years of operational data with the latest filtration system combined with other operational experiences of more than 25 years, it is shown that implementation of the high efficiency particulate air filter system provides reduced number of crank washes, gas turbine performance improvement and significant economic benefits compared to the traditional synthetic media type filters. Reasons for improved gas turbine performance and associated economic benefits, observed via actual operational data, with use of the latest filter system are discussed in this paper.

Gas Turbine Fouling Offshore: Correction Methodology Compressor Efficiency

2017 ◽  
Author(s):  
Stian Madsen ◽  
Lars E. Bakken
Keyword(s):  
Gas Turbine ◽  
Peak Load ◽  
Operational Experience ◽  
Air Filtration ◽  
Ambient Conditions ◽  
Key Factors ◽  
Turbine Performance ◽  
Main Challenge ◽  
Filtration System ◽  
Compressor Efficiency

Gas turbine performance has been analyzed for a fleet of GE LM2500 engines at two Statoil offshore fields in the North Sea. Both generator drive engines and compressor driver engines have been analyzed, covering both the LM2500 base and plus configurations, as well as the SAC and DLE combustor configurations. Several of the compressor drive engines are running at peak load (T5.4 control), and the production rate is thus limited to the available power from these engines. The majority of the engines discussed run continuously without redundancy, implying that gas turbine uptime is critical for the field’s production and economy. Previous studies and operational experience have emphasized that the two key factors to minimize compressor fouling are the optimum designs of the inlet air filtration system and the water wash system. An optimized inlet air filtration system, in combination with daily online water wash (at high water-to-air ratio), are the key factors to achieve successful operation at longer intervals between offline washes and higher average engine performance. Operational experience has documented that the main gas turbine recoverable deterioration is linked to the compressor section. The main performance parameter when monitoring compressor fouling is the gas turbine compressor efficiency. Previous studies have indicated that inlet depression (air mass flow at compressor inlet) is a better parameter when monitoring compressor fouling, whereas instrumentation for inlet depression is very seldom implemented on offshore gas turbine applications. The main challenge when analyzing compressor efficiency (uncorrected) is the large variation in efficiency during the periods between offline washes, mainly due to operation at various engine loads and ambient conditions. Understanding the gas turbine performance deterioration is of vital importance. Trending of the deviation from the engine baseline facilitates load-independent monitoring of the gas turbine’s condition. Instrument resolution and repeatability are key factors for attaining reliable results in the performance analysis. A correction methodology for compressor efficiency has been developed, which improves the long term trend data for effective diagnostics of compressor degradation. Avenues for further research and development are proposed in order to further increase the understanding of the deterioration mechanisms, as well as gas turbine performance and response.

scholarly journals Gas Turbine Compressor Operating Environment and Material Evaluation

1989 ◽  
Author(s):  
R. W. Haskell
Keyword(s):  
Gas Turbine ◽  
Material Selection ◽  
Necessary Condition ◽  
Base Materials ◽  
Material Evaluation ◽  
Filtration System ◽  
And Performance ◽  
A Site ◽  
Gas Turbine Compressor ◽  
Selection Of

The reliability and performance of a gas turbine compressor is strongly dependent upon the environment in which it operates, the materials which are used, and the filtration system. Erosion and to a certain extent fouling can be controlled by the filtration system, but corrosion is largely controlled through site and material selection. The factors which determine the corrosivity of a site are humidity, the concentration of acid-forming gases, and the composition of particulates. The interrelationships of these factors are discussed with an aim of reducing their impact on compressor operation. A necessary condition for corrosion is the presence of moisture. The acidity of the moisture results from its interaction with the gases and particulates of the environment. The details of these interactions which are important to turbine operators are discussed. A considerable amount of corrosion testing of base materials and coatings has been performed and this is reviewed. A table is presented for selection of compressor materials based on the nature of the site environment and the type of compressor filtration.

Effect of air filtration system on gas turbine performance

2021 ◽  
Author(s):  
Denis Balzamov ◽  
Veronika Bronskaya ◽  
Olga Soloveva ◽  
Gulnaz Khabibullina ◽  
Alsu Lubnina ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Air Filtration ◽  
Turbine Performance ◽  
Filtration System

Salt in the Marine Environment and the Creation of a Standard Input for Gas Turbine Air Intake Filtration Systems

2004 ◽  
Author(s):  
Peter T. McGuigan
Keyword(s):  
Boundary Layer ◽  
Pressure Drop ◽  
Gas Turbine ◽  
Marine Environment ◽  
Gas Turbines ◽  
Marine Boundary Layer ◽  
Primary Concern ◽  
Air Filtration ◽  
Filtration System ◽  
Recent Developments

Contaminants are ever-present in the air. Contaminated air entering a Gas Turbine will damage internal components and bring about a reduction in overall efficiency. The amount of contaminant entering a Gas Turbine, therefore, needs to be minimised. This paper describes recent developments in the understanding of one such contaminant, salt. It describes how salt is produced, how it varies climatically and how it varies from location to location and is presented here in the context of the author’s particular field of competence — air filtration system design. Salt ingestion by a Gas Turbine intake can cause corrosion and, given time, can accumulate on the compressor blades and reduce the aerodynamic efficiency. The removal of salt in the air is therefore of primary concern to all those involved in the design and operation of Gas Turbines. Salt removal systems are manufactured in various guises. The concept, however, remains the same — salt capture upstream of the Compressor stage. The drawback to this method of salt removal is that it results in a decrease in air pressure entering the Compressor and will consequently bring about a decrease in the overall system performance. As the requirement to remove more and more salt contaminant increases, the pressure drop across the method of filtration required to achieve this, increases. The responsibility of the Filtration Engineer is therefore to fully understand the requirements of the Gas Turbine, to understand the balance between pressure drop, salt removal and salt size and, consequently, to design an appropriate filtration system — one fit for purpose. Gas Turbines in the marine environment are generally found at heights less than 50m above sea level. It is this environment (the Marine Boundary Layer) which historically has been difficult to fully quantify. Herein lies the problem for those involved — if the environment is not fully understood how can the proper exploitation of the technologies be achieved? Recent developments, however, have led to a better understanding of salt in the Marine Boundary Layer. This paper describes these recent developments.

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