What is an industrial filter and what is its use?

This is one of the questions that occupy the minds of many craftsmen today. In general, an industrial filter is one of the equipments whose task is to prevent the movement of suspended solid particles in fluids such as liquids or gases. In general, the filters that are used in industries perform the act of purifying fluids in two ways. Some filters perform fluid purification when the fluid is moving in and out. But there are other types of filters that perform purification in case of fluid flow interruption. But what is the distinctive feature of the industrial filter? How do these filters filter the passing fluid?

Types of industrial filters

In general, the fluids used in various industries are in the form of gas or liquid. Each of these fluids has different physical and chemical properties and various filters are made according to these properties. Industrial filters include air filters, oil filters, gas filters, water pre-filters, and separator filters.

What is the characteristic of industrial filter?

In general, the industrial filter is made of various parts. Filters must be designed and built in such a way that in addition to preventing the passage of solid materials in the fluid, they can also purify the remaining solution. For this reason, the characteristics of a suitable industrial filter are as follows:

Separation of solids from liquids

As mentioned, a suitable industrial filter should be able to separate the solid part of the fluid. Mainly because the membrane and shell part of the filters are in direct contact, they must be designed to do this well.

No obstruction

In some filters, during the separation of solid materials, the fluid and solution passage holes are closed and somehow these filters prevent the passage of fluid. Therefore, a suitable filter should be designed in such a way that it does not get blocked quickly during the separation of the solid part from the fluid part.

The possibility of emptying and cleaning

If permanent filters are used in the industry, the shell of this filter should be designed in such a way as to provide the possibility of cleaning the mold.

What is meant by chemical resistance of industrial filter?

Many filters that are used in industries are responsible for purifying fluids of an acidic nature. For this reason, the shell of these filters, which is in direct contact with the fluid, must be resistant to corrosion. In addition, they must be resistant to the chemical interactions of the fluid.

What is the use of industrial filter?

As mentioned, industrial filters are used to purify the output fluid. In general, these filters are used in various industries such as oil and gas and petrochemicals, automobile factories, and in general industries that produce pollutants for the production of their products.

What is an air filter and where is it located?

The air filter is a device that is located in the air inlet to the device and performs the work of air purification. In this way, it absorbs all the impurities in the air and brings clean air into the device and also adjusts the amount of air entering the device. The air filter is an important part of the devices.

Without an air filter in the device, a large amount of pollutants will enter it and will also cause wear and damage to its parts.

When the device is turned on, different particles of different sizes such as sand, dust and moisture may be drawn into the device with the incoming air, which if not prevented from entering, will cause great damage to the device. The main function of the air filter is to prevent from entering this impure air inside.

Service life of the air filter

The useful life of the air filter is very different, and the main factor is the level of operation of the device. The air filter must be purchased of a high-quality type, otherwise it will cause the device to wear out.

Filter and micro filter

The most dangerous pollutant of compressed air systems, i.e. water, is removed by refrigeration or absorption dryers. But other pollutants are still present in the air, which must be somehow removed from the compressed air system. One of the best ways to remove other pollutants, including: oil particles, dust particles, microorganisms, as well as pollutants caused by corrosion and rusting of equipment, is to use filters and microfilters.

In general, six main groups for filters can be considered:

1. Primary filter

2. secondary filter (microfilter)

3. dust filter (dust filter)

4. Water separator filter

5. Carbon filter (active carbon towers)

6. sterile filter (microbiological)

Primary filter and secondary filter (microfilter):

Primary filter and secondary filter (microfilter) are the most important air purification equipment in any compressed air system. These filters are designed using mechanical filtration technique to remove oil and water particles and are also very effective in removing solid particles with very small sizes (up to one hundredth of a micron). It is generally believed that the primary filter is used to remove oil and the secondary filter is used to remove suspended solid particles.

But the fact is that both filters have the same function. The primary filter is responsible for overall filtration and protects other filters from mass contamination in compressed air.
The combination of primary filter and secondary filter with low operating cost and minimum service and repair time ensures continuous supply of high quality air for industrial units.

Water trap:

The water separator filter is used to protect the primary and secondary filters (microfilters) in systems where the air in the distribution and piping system cools too much (cold areas). This filter removes more than 90% of the water in the air from the system.

Dust filter (dust filter):

A dust filter is used to remove solid particles from the air flow. Using the mechanical filtration technique, this filter separates solid particles up to 99.99% from the compressed air flow. To remove 100% of solid particles from the air flow, membrane filters should be used.

Carbon filter (active carbon towers):

Oil vapor is actually liquid oil in gaseous form and easily passes through the primary and secondary filters along with compressed air flow. The most effective way to separate oil vapors from the compressed air system is to use oil filters or carbon-active absorbent columns. In these columns, compressed air is passed through a bed of active carbon absorbent materials, and oil vapors are absorbed by these absorbent materials, and as a result, we will have oil-free air at the output.