removal of metallic fumes

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design of the pollutant filtration system with higher efficiency

Fume are solid particles that are produced by the condensation of gases after sublimation from molten materials. Their production is usually associated with a chemical reaction, especially oxidation.
These particles are very small (the size of their diameter is about 0.2 to 0.3 microns) and therefore they are easily inhaled and reach the end parts of the respiratory system. Fumes can be visible or invisible. that SMOKE or welding fumes are visible fumes.

Gases, vapors and fumes enter the body through the air we breathe.

Different gases and fumes affect our body in different ways. The body can protect itself from the harmful effects of gases and vapors without causing side effects. For example, gases such as carbon dioxide and argon are relatively non-toxic unless inhaled in large quantities. Although gases such as carbon monoxide, nitrogen oxides and ozone are highly toxic. The health effects of fumes depend on the type of fumes that are inhaled. The iron oxides produced during most welding are relatively non-toxic, the usual effects are known, and they are not permanent unless they are combined with cigarette smoke or other substances such as silica or asbestos, which then affect the lungs. Effects of fumes, such as difficulty in breathing, disappear after a single exposure and the passage of time. The fumes produced during the stainless steel welding process cause serious risks such as permanent breathing problems (severe breathing and cancer, which is an example of hexavalent chromium).

Acute effects:

(acute effects) are those effects that happen immediately or quickly, and chronic effects (chronic effects) are those effects that appear over a long period of time.
For example, metal fume fever is an acute effect of exposure to several types of fumes. This reaction includes flu symptoms, intermittent chills, and high fever. The onset of symptoms may be delayed, but symptoms usually subside after a day or two.
Below are some examples of fumes, their limits, and their effects:

Aluminium

There are aluminum compounds in alloys such as Inconels, copper, zinc, iron, magnesium, brass and filler metals (putty). This type of fume is stimulating and irritating to the lungs and its TLV-TWA limit is 5 mg/m3. It is worth mentioning that this type of fumed has the lowest risk among metal fumes.

Beryllium

It is a strengthening agent in copper, magnesium, aluminum alloys and electrical contacts. The effects of this type of fume include metal fume fever, cancer and respiratory tract damage.
The permissible limits for this fume are TLV-TWA: 0.002 mg/m3 and TLV-STEL: 0.01.

Chrome

It is mostly found in stainless steel, hard alloys, plated metals and welding wire. Among the side effects of this metallic fume, it increases the risk of lung cancer and causes skin irritation and burning. TLV-TWA limit is 0.01 mg/m3.
In recent years, the researchers of this company have conducted extensive research in the field of understanding the behavioral mechanisms of various gaseous and solid phase pollutants such as; Dust, metal fumes, and all kinds of chemical gases and smoke have done. These researches have led to the design of the pollutant filtration system with higher efficiency and at the same time with less energy consumption, thus solving the problem of pollutants in a specialized way for various industries.
Finally, the high experience and capability of this company made it successful in receiving the knowledge base certificate from the work group for evaluation and recognition of competence of knowledge base companies and institutions. Currently, Kimiagaran Sanat Amirkabir Company is operating as the only knowledge-based company in the field of filtration of industrial environments in Iran.