Cleaning of condenser- and heat exchanger tubes
When a large number of tubes need to be cleaned quickly and effectively, projectile cleaning is an excellent choice. In the industry, this cleaning method is also known as ''dart cleaning''. All terms refer to the same methodology: firing specially developed projectiles through tubes at low pressure.
Goodway Benelux offers low pressure equipment for the (internal) cleaning of large condensers and heat exchangers with 500+ tubes. When tubes become internally fouled with various types of deposits, this will result in a direct decrease in efficiency and an increase in costs.
Low pressure cleaning/maintenance
Low pressure cleaning is a proven technology that has been used for many years in various industries, such as: power plants, petrochemical industry, process industry, maritime, etc. The technology offers various (major) advantages over traditional cleaning methods such as high pressure cleaning. Some advantages of low pressure projectile cleaning are:
- Speed. Time saving in projectile cleaning is the biggest advantage. Tubes can be shot through with projectiles within seconds, regardless of their length. With 2 operators you can clean approximately 750/1000 tubes per hour depending on the right conditions. That's faster than any method available. Projectile tube cleaning allows for an overal shorter downtime.
- Cost reduction. Projectiles are relatively inexpensive and can be reused, so the cost per cleaning is much less than, for example, with high pressure. In addition, the risk of damage to the tubes is virtually nil. This excludes future costs for replacement or repair.
- Safety. Projectiles are shot at low pressure. This is not only safer for the operators, but also for the system itself. Tubes are not exposed to high pressures internally, as with high pressure cleaning.
- Water consumption. Projectiles are shot through the tubes within seconds. The actual water consumption per tube being cleaned is therefore very low compared to alternative cleaning methods.
Best areas of application
Cleaning with projectiles will become more interesting as the amount of tubes to be cleaned increases. Especially with larger systems such as surface condensers it becomes very interesting to perform a projectile cleaning. Below is a brief summary of the best areas of application:
- The softer the deposits, the better. With soft deposits, lighter and therefore cheaper projectiles are required, which saves material costs. In addition, the chance of a completely clean tube after shooting through 1 projectile is greatest here. Think of light pollution such as: sludge, algae, mud, etc.
- The higher the amount of tubes, the better. With a large number of tubes, the lead time of the cleaning can be shortened enormously.
Usability of the technology
Cleaning tubes bundles with projectiles is a very interesting way to perform (preventive) maintenance. In addition, the various benefits in terms of safety and reduced downtime are a major advance in comparison to traditional cleaning methods. In many cases it is possible to perform a projectile cleaning. The experts of Goodway Benelux can tell you within a few minutes whether it is possible or not.
For tube bundles with very hard deposits, where ultra high pressure cleaning (2500+ bar) is required, a projectile cleaning will not be feasible. Cleaning with projectiles is therefore an addition to the industrial cleaning of tube bundles and not a replacement for high-pressure cleaning as a whole.
Goodway Benelux offers various projectiles for different applications. For soft deposits, you can opt for a lighter type of projectile. When the deposits becomes harder and the tube material allows it, one can opt for heavier type projectiles. Every situation and deposit is different, therefore it is important to select the right type of projectile for a correct and effective cleaning result.