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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
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05.27.26
You may carry out regular . You may have selected the most appropriate possible. You may reasonably presume your washes are effective at ... However, have you considered that your detergent isn’t even touching parts of the compressor, leaving it dirty and compromising overall performance?
Blade coverage and spray distribution are critical to ensuring the most possible. But why are these factors so important, and how can you improve them? Let’s find out…
During a gas turbine compressor cleaning cycle, atomised water/ are sprayed directly into the compressor. This washes the internal surfaces via a combination of:
Foulants removed, the process is followed by thorough rinsing until conductivity levels are achieved.
It’s simple: a cleaning solution can only clean the surfaces it contacts. Any areas that are missed will remain fouled, undermining your efforts. Even if you use the correct detergent, poor spray distribution results in uneven cleaning, increased rinse requirements and avoidable overall performance loss.
Observations on some during on-line washing showed visible “streaking” patterns across the bellmouth and compressor blades. In several cases:
These observations suggested that airflow and nozzle positioning were significantly affecting spray distribution and cleaning coverage.
Some operators choose to conduct water-only online cleaning programs. In these cases, you may think spray distribution is less important. However, field observations showed that on some GE 7FA units operating with water-only online washing:
Whether you opt for water-only washes or introduce , ensuring full blade coverage and even spray distribution should be a priority to get the most from your efforts.
are designed to inject atomised spray into the airflow zone ahead of the compressor face to improve overall blade coverage.
The three fundamental factors that impact how effectively a cleaning solution reaches all the areas within a compressor are:
Understanding these factors allowed us to develop superior nozzle technology, enabling customers to achieve more complete blade coverage with water/their chosen cleaning solution.
We’ve spent decades in this specialist area, and our technology has evolved with greater research and understanding. When we conducted a site visit in Lake Charles, our own 1990s nozzle designs produced:
Since then, our designs have evolved through field experience, testing and continued development work. We’re dedicated to staying at the forefront of the industry, always striving to deliver superior results for our customers. Our latest nozzle designs are a testament to this dedication.
Our cleaning nozzles are installed at sites around the globe, each one having been made from high-quality materials and tested in-house at our workshop in the UK.
Some operators of GE 7FA/ EA units noted several observations following nozzle changes:
Our customers are overwhelmingly pleased with the results our nozzles and technology achieve.
Nozzle positioning, atomisation, and spray trajectory are critical to enabling cleaning solution full reach within a . If you compromise on your and setup, you waste opportunities during cleaning cycles and suffer uneven cleaning, increased rinse requirements and performance loss.
If you’re interested in upgrading your gas turbine compressor cleaning nozzles, we’d love to hear from you. Visit our for more information or to discuss how we can help.
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.
