Change language
|
ROCHEM Fyrewash Ltd
5-6 Sun Valley Business Park
Winnall Close, Winchester
Hampshire
SO23 0LB
ROCHEM Fyrewash Inc
23707 West Hardy Road
Spring
Texas
77373
10.22.21
It’s an exciting time for gas turbine technology. We’ve seen huge advancements in recent years and models such as the are proving investment in this sector is well spent.
Aside from being more reliable, newer turbines are demonstrating greater efficiency. Needless to say, efficiency is the route to profitability, so anything that can boast better efficiency is welcome to the industry.
Unfortunately, several technological and environmental factors impact . Some can be controlled e.g. your gas turbine model and your choice of fuel, and some are out of your hands e.g. the climate and airborne contaminants.
At Rochem, we’ve helped countless gas turbine operators recover lost performance. Experience has shown that axial flow compressor deterioration during operation accounts for the major portion of gas turbine related performance loss compared to the new and clean condition. When looking at overall performance loss, approximately 70% can usually be put down to compressor deterioration due to blade fouling.
So, how can we improve efficiency, regardless of whether the gas turbine is the latest version or an older model? The answer is to tackle .
The greater efficiency of newer turbines is down to many factors, including:
All of this is fantastic news and allows turbine operators to produce more power, more efficiently.
However, the precise components are extremely sensitive while the higher working temperatures can accelerate fouling issues.
Even advanced coatings are susceptible to physical and chemical erosion if steps are not taken to protect them.
It’s an unavoidable fact that air contains contaminants. The types and quantities of these contaminants will vary depending on where you take your sample, but you could expect sand, pollen, exhaust gases, salt, and all manner of other particles to be present in the air at your gas turbine site. Even water droplets from fog can decrease the efficiency of your turbine.
Although we can’t usually see these contaminants with the naked eye, once they are drawn into the gas turbine compressor you will certainly notice their presence.
They can physically erode the inner workings of your compressor and, when subjected to high temperatures and pressures, become baked onto compressor blades. This alters the aerodynamics thereby reducing efficiency.
If your gas turbine site is close to the sea, airborne salt can cause even further problems.
The chloride may start pitting corrosion of compressor blades while the sodium can form sodium sulfate by combining with sulfur in the fuel. The latter can be particularly devastating as it tends to cause damage to the very expensive hot section components.
You must keep the inner working of your gas turbine compressor free of contaminants. While help to reduce the foulants present, will protect the turbine blades from and erosion, helping to maintain an efficient, reliable turbine.
Whether your gas turbine is an old model or brand new, there are almost certainly steps you can take to .
Filters certainly help combat the issue of fouling, but even the newest, most expensive filters cannot remove 100% of airborne contaminants and they can also enter the system via other means e.g. lubricating oils. So, you will inevitably experience some fouling of your compressor blades.
Alongside a regular maintenance schedule, compressor washing is a fantastic way to sustain or even boost the efficiency of your gas turbine.
can be performed during normal turbine operation, simply and effectively removing any troublesome contaminants that make it through or bypass the filters. This keeps your compressor running as it’s designed: with optimum airflow and maximum efficiency.
To complement , less regular manual off-line washes are recommended to thoroughly cleanse foulants and restore your compressor to a clean, aerodynamic state.
There’s no doubt that filters play an essential part in maintaining efficiency in a gas turbine compressor. However, no matter how sophisticated the filter is, it cannot do the job on its own. We need to step in with a regular cleaning schedule to ensure the turbine continues to run at peak, profitable performance.
If you’ve got any questions about our gas turbine compressor cleaning equipment and specialist chemicals, .
Our knowledgeable team will be happy to discuss your specific requirements and help you regain lost power at your site.
Post written by Martin Howarth
An extensive knowledge of mechanical and electrical engineering together with hands on experience with gas turbines provides a bedrock for his work at Rochem.
