Tube Cleaning

The Process Involved

Tube cleaning is a process that involves maintenance and cleaning of fouled tubes.

The requirement for cleaning is important. The medium transferred via the tubes can result in various deposits and even obstructions to a certain extent.

In any industry or the process of system engineering, there are certain specific demands placed on heat transfer or surface roughness activities. In various industries such as medicine, pharmaceuticals, specific requirements are given importance such as germproof ness as well as clean tubes. The tubes are supposed to be free of any foreign matter. The process of tube cleaning ensures freedom from corrosion that may appear due to deposits. Disasters such as tube failure can also be prevented with the help of efficient cleaning.

There are several processes and types of tube cleaning.

Here are some of the most common types of tube cleaning and the process involved:

a)      Chemical tube cleaning:

This is a process involves use of various chemical or cleaning liquids in order to eliminate deposits and layers. One of the best examples in this regard is the process of coffee maker de-liming. In this process, acetic acid or lemon acid is used to remove scale. Various other cleaning liquids can also be used depending on the application field and material of the tube. Several processes of this cleaning method may also need to go through the following multistage treatment:

·        Cleaning

·        Chemical activation

·        Rinsing

The chemical tube cleaning process is efficiently applicable for any specific diameter desired.

b)      Mechanical tube cleaning:

This process is under taken with the help of a mechanical system. The system is actually a cleaning body that is pushed through the tube to eliminate all deposits existing in the tube wall. There is a brush that is use to clean the tube with the help of a rod or a special flexible ring. When comes to large scale cleaning process or in the industrial sector there are several specialized mechanical tube cleaning processes available.

c)      Off-line tube cleaning process:

An off-line process is one where the system required to be cleaned must be taken out of the operation to let the cleaning body injected into it. This also facilitates the process of cleaning. The process includes two different types of cleaning bodies namely; passive and active cleaning bodies. Passive cleaning bodies may include certain types of brushes or specialized equipments such as scrapers or pigs. These are inserted into the tube with the help of water, pressurized air or other medium. Active cleaning bodies are robots controlled by remote. These robots enter into the tube and clean.

d)      On-line tube cleaning process:

When it comes to the online process, the cleaning body is moved through the tubes via the conveying medium. The cleaning part is facilitated due to the big size as compared to the diameter of the tube.

e)      Thermal tube cleaning:

In this type of cleaning process, the deposit or layer is dried via a heating process. Here, it may flake off and thereafter discharged via the conveying medium or rinsing liquid.

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