Cleaning of shell and tube heat exchangers

There are descaling powders on the market (with corrosion inhibitors added), which provide a good cleaning effect and have little impact on the equipment (in terms of corrosion). It’s very convenient to use.

1. Ordinary dirt can be cleaned simply with water； 2. Those that cannot be cleaned with water can be cleaned using chemical reagents ； 3. Specific chemical cleaning agents and their prices can be inquired with the cleaning service providers, but chemical cleaning generally comes at a relatively high cost.

It is recommended to use a high-pressure gun for cleaning````

It is recommended to use a high-pressure gun for cleaning` I made a typing mistake just now. I’m sorry

Clean with a high-pressure washer, rinsing repeatedly until the water coming out of the other end is clear

It’s useless no matter what you use to clean them. Let me share some tips: for those small heat exchangers, if you want to do it quickly, use a steel bar that’s thinner than the tubes used in the heat exchanger. Gather a few workers, use that bar to clean each tube one by one, and then rinse them with water. That’s how we do it, and it works well while also saving money. For the cleaning of large heat exchangers, you can turn to me; I have a professional cleaning team that can handle boilers as well. There are solutions for scaling caused by different substances!:lol

Cleaned with a high-pressure washer, rinsed repeatedly, CIP online cleaning

The best option is a high-pressure gun; it’s not corrosive

Shell-and-tube heat exchangers can be cleaned using high-pressure water guns, or they can be pickled with acid-resistant circulation pumps. During the pickling process, a corrosion inhibitor must be added in accordance with the amount of acid used, to ensure that the tubes are not subjected to excessive acid erosion

Different condensers require different cleaning methods. Glass condensers can be cleaned using chemical agents such as hydrochloric acid, while those made of ordinary carbon steel are cleaned with water or cleaning agents. In cases of blockages, high-pressure water guns are used for cleaning.

It is divided into physical cleaning and chemical cleaning; generally, it is necessary to contact the cleaning service provider before making a decision

I heard there’s a type of automatic cleaning machine where a brush rotates inside the tube to clean it automatically. I wonder where it’s available for purchase?

With the use of the “online automatic cleaning device for heat exchangers”, scaling will no longer occur.

The cleaning of heat exchangers can be done either mechanically or chemically; the choice of cleaning method depends on the shape of the heat exchanger, the type of deposits, and the equipment available at the facility. Here are some commonly used ones for your reference: 1. Acidic shampoos – Hydrochloric acid is often used as the acidic solution, but a certain amount of turbidity inhibitor must be added to prevent corrosion of the substrate. 2. Mechanical method: Use a round rod or tube (a tube is preferred, as when it is pushed forward, dirt can be removed through the tube), with a wire brush welded to one end (use a nylon brush for stainless steel). 3. High-pressure pump: A high-pressure pump (with an output pressure of 100–200X105 Pa) is used to spray high-pressure water for cleaning, which yields good results. 4. Sponge balls: Different hardnesses of sponge balls should be used depending on the type of scale present; for particularly hard scales, abrasive sponge balls with strip-like structures can be utilized.

High-pressure water jet cleaning Chemical cleaning

Cleaning of large heat exchangers: high-pressure water cleaning is used for those with severe damage in structure； For small-scale use, chemical reagents can be used; those available on the market will do, or they can be prepared manually as well. The key is the ratio of corrosion inhibitors to acid and water

The regular ones can be cleaned with water; those that cannot be cleaned with water can be cleaned chemically. I also think that the choice of cleaning method is related to the structure of the heat exchanger as well. For example, the arrangement of heat exchange tubes that generally require mechanical cleaning is usually in a regular square shape, while it is difficult to clean the inside of U-tube heat exchangers. Wait

Clean with high-pressure water using a rotating nozzle.

Regular ones can be cleaned with water; if that doesn’t work, chemical cleaning can be used