Tube-type Heat Exchanger Cleaning

Tube-type Heat Exchanger Cleaning

Tube-type heat exchangers are essential equipment in traditional heavy industries, playing a crucial role in heating and cooling processes. Large-scale industries, such as crude oil refining, chemical processing, steelmaking, power plants, and paper production, heavily rely on this equipment. A heat exchanger is an industrial application that transfers heat from a hot fluid to a cold fluid through convection heat transfer and conduction. In chemical and petrochemical plants, heat exchangers are a common device for thermal energy conversion.

Inside the bundle of the heat exchanger, the inner and outer surfaces of the tube wall come into contact with various media of different temperatures, achieving the goal of cooling through temperature changes. However, during the heat exchange process, cooling water constantly deposits various chemical components that crystallize and form hard scale on the inner surface of tube walls. This build-up reduces the heat exchange efficiency, impacts production capacity, and can lead to shutdowns due to insufficient flow and pressure drop, and causes significant wear and tear on other system components. Therefore, regular maintenance and cleaning of the heat exchanger are necessary after a certain period of use.

The typical way to remove the scale from the heat exchanger tube wall are manual scraping, high-pressure water jets, or immersion in chemical agents. However, these traditional cleaning methods can be time-consuming and labor-intensive, especially when dealing with a large number of tube bundles, affecting the overall cleaning efficiency. High-pressure water jets are a common solution for brittle and hard deposits, with a pressure range of 200 to 3000 Bar. Water enters the cracks on the deposits, forcing them to expand and break, allowing them to be washed away.。

Pumpson offers a more convenient and rapid solution for high-pressure cleaning of tube heat exchangers with Projectile nozzles designed for cleaning the inner diameter of pipelines. By using a high-pressure hose to transport water to the nozzle, the nozzle's acceleration and impact forces can dislodge and break through any blockages in the pipeline. Additionally, the nozzle's back-and-forth movement from the water flow can push and pull scale and debris out of the tube, completing the cleaning task. The entire system requires a high-pressure water machine, Projectile nozzle, and a specialized jet gun, all operating at low pressure and high flow rate. Compared to typical cleaning methods, using the Projectile cleaning system can save multiple hours of working time.

The Projectile nozzle for cleaning the inner diameter of pipelines uses a high-pressure water column to push and scrape away scale and blockages on the inner walls of the pipe. The nozzle comes with a special scraper to ensure effective removal of the debris. The scraper can be made of stainless steel, plastic, or special U-shaped curved stainless steel for use on different types of pipelines and blockages. Alternatively, different types of nozzles, such as nylon or steel brushes, can be used to address different pipeline conditions. The nozzle can be reused multiple times, saving costs and time, maintaining production efficiency, reducing operational costs, and enhancing enterprise competitiveness.