Is gas compressor cleaning safe during operations?

We strongly support on-line gas turbine compressor cleaning. The approach of cleaning “little and often” helps maintain performance and prevent buildup, while more thorough off-line cleaning can be reserved for scheduled maintenance periods.

On-line cleaning involves injecting water and/or a cleaning solution into the gas turbine compressor while the turbine is running. At first, the idea of introducing anything other than gas into a live gas turbine compressor may seem risky. It’s understandable to wonder whether this could affect output or cause damage. This article explains why on-line cleaning is both safe and beneficial when performed correctly.

Why do gas turbine compressors need cleaning?

During normal operation, accumulate on the internal surfaces of gas turbine compressors. Contaminants in the air, dust, hydrocarbons, salts, lubricants and other microscopic deposits adhere to surfaces under high heat and pressure, corroding, eroding and interrupting airflow. Left unchecked, these foulants inhibit production and eventually lead to unscheduled shutdowns.

Washing away foulants maintains production, boosts efficiency and extends the lifespan of your equipment.

During normal operation, foulants accumulate on the internal surfaces of gas turbine compressors. These can include:

• Dust and airborne particles
• Hydrocarbons
• Salt
• Lubricant vapors
• Other microscopic deposits

Under high heat and pressure, these foulants adhere to the compressor blades and casing. If not removed, they disrupt airflow, reduce efficiency, and can lead to corrosion, erosion, and ultimately .

What is on-line gas turbine compressor cleaning?

On-line cleaning allows compressors to be cleaned during normal operation. spray a fine mist of water or cleaning solution into the compressor, where the fouling is gradually washed away.

On-line cleaning is best used frequently and is often supplemented by periodic off-line cleaning during planned outages to remove more stubborn residue.

Is on-line cleaning safe?

Yes — as long as proper procedures are followed.

1. Use specialized equipment

Choose that atomize cleaning solution and deliver a calculated spray pattern to avoid thermal shock while achieving the best possible results. We invest in computer modelling technology to simulate nozzle placement and spray patterns to ensure optimum results at each site. utilize proven and patented technology and are individually tested before leaving our dedicated workshop.

2. Use demineralized water

Using demineralized water prevents the introduction of minerals and contaminants that could add to compressor fouling.

3. Select appropriate cleaning chemicals

Chemicals formulated specifically for gas turbine compressors (such as ) clean effectively while protecting the delicate inner surfaces of .

4. Monitor operating conditions

Key operating parameters, temperature, pressure, and vibration, should be monitored throughout the cleaning process to ensure they remain within normal limits.

Does cleaning during use impact production?

There may be a very small and temporary reduction in power during the cleaning cycle. However, the performance gains from keeping the compressor clean far outweigh this short dip.

and efficient results in regained power and fuel savings. As an example, a Rochem customer reported savings of USD 15 million in fuel and performance over two years thanks to a combination of on-line and off-line cleaning. You can .

Get in touch

Rochem has extensive global experience in gas turbine compressor cleaning. Our on-line cleaning systems, , , and are used worldwide to help turbine operators improve reliability and efficiency. Cleaning using our OEM recommended technology is safe and effective.

We recommend a maintenance approach that combines regular on-line washing with periodic off-line cleaning to maximize performance and long-term profitability.

If you’d like to review options for your site or discuss the best cleaning strategy for your operation,