Ocean Instruments provides welding fume filter selection scheme

Toxic substances such as acetaldehyde, rosin, isocyanates, hydrocarbons, etc. are often produced during welding operations. These toxic substances are seriously threatening human health. Caused the emergence of many occupational diseases, such as: lung cancer, asthma, eczema, bronchitis, skin allergies, respiratory infections, etc. FILTRONIC's smoking filtration equipment can effectively purify the air and create a beautiful and healthy working environment for you.
FILTRONIC is the world's largest professional manufacturer of the highest quality solder smoke and toxic gas filtration equipment, and its products have passed the Swedish Environmental Research Institute certification ILV standard. FILTRONIC has a wide range of products, a complete range of components for smoking equipment, and is widely used in various fields. FILTRONIC can provide customers with the most complete smoking equipment. From any corner of the world, FILTRONIC can get the supply of the entire set of smoke filtration equipment and the best technical services.
FILTRONIC product features:
• High quality • Portability • Ultra-quiet • ESD anti-static standard • Easy maintenance and replacement • Made in Sweden, tested and certified by SP-Swedish Inspection Institute.
Filtronic product smoke filtration principle The original smoke dedusting equipment was just a device filled with activated carbon in front of the fan. This kind of equipment has poor adsorption effect on smoke and cannot completely remove harmful smoke. The current filtration system basically includes several components such as pre-filtration, particulate filtration, gas filtration and dust filtration. Filtronic's latest generation of smoke filtration system is shown in the figure, which mainly consists of two parts: smoke particulate filter and gas filter. For a perfect filter system, these two filters must be balanced with each other to achieve the best results.

First of all, the harmful smoke first passes through the high-efficiency soot particulate air filter (HEPA). This process is mainly a physical process (High Efficiency Particulate Air Filter, HEPA). filter). This filter is a fibrillated glass filter system that filters particles larger than 0.3 microns from the air stream with 99.97% DOP. (Using 0.3 micron DOP droplets as particles, the filtration efficiency obtained by measuring high-efficiency filters is called "DOP efficiency." DOP is dioctyl phthalate. DOP is a commonly used plasticizer in the plastics industry. A common cleaning agent.)
The second part is a gas filter using a scrubbing air flow. This process is mainly a physical and chemical interaction process. The gas filter is mainly aimed at finer dust and aerosols generated by volatile organic compounds and flux. People will see that the main filter of FT is slightly larger than the filter of the same industry. This is because FT has specially designed and calculated the filter layer structure of the filter, which makes the filter particles and the gas to be filtered The contact time (Dwell Time, should be no less than 0.3 seconds, which depends on the air flow speed and the number of filters) is just right. The gas filter filling particles are Filtronic's unique granular material, which can make the exhaust pipe of the filter have a longer life. The particles are a mixture of activated carbon and chemisorption materials, and their performance and efficacy depend on two factors:
Activated carbon: Spherical activated carbon has a large surface area and a large number of micropores. According to the physical adsorption characteristics (van der Waals force) of activated carbon, it has a strong gas physical adsorption capacity and a long service life, but for adsorption of small molecular weight Chemical substances are difficult. At the same time, although the adsorption speed is fast, when the temperature and humidity increase, the adsorbed material is also easy to detach, and it is also easily replaced by the more easily adsorbed material, that is, the physical adsorption of pure activated carbon has a reversible effect. Therefore, activated carbon alone cannot be used as a gas filter material.
Chemical adsorption materials: such as potassium permanganate, can adsorb some small molecular weight gases with weak activated carbon adsorption capacity, such as formaldehyde, ammonia and hydrogen sulfide that cannot be used as an adsorbent for activated carbon alone. Using chemical adsorption materials, through chemical reactions, harmless treatment. The specific process is this: ethanol is converted to acetaldehyde, brownstone and water; acetaldehyde and water are converted to acetic acid, brownstone and carbonated water; acetic acid and carbonated water are converted to salt and water. Salty brownstone remains as a chemical residue In the gas filter. The filter exhausts fresh air and a small amount of water.
The dust filter absorbs the particles and smoke generated by the gas filter.
Beijing Ocean Industrial Technology Co., Ltd. (abbreviated as Ocean Instruments) recommends that during lead-free soldering, add a pre-filter in front of the main filter, which can remove larger smoke and particles and improve the service life of the main filter.
At the same time, in the contemporary electronics industry, the equipment used needs to have electrostatic protection. Beijing Ocean Industrial Technology Co., Ltd. (Ocean Instruments for short) recommends that you purchase equipment with relevant ESD certificates. All Filtronic welding fume filter systems and components comply with ESD anti-static standards.
Recommendations for the selection of smoke filtration systems:
Beijing Ocean Industrial Technology Co., Ltd. (Ocean Instruments for short) recommends that you consult the supplier with the following questions before choosing a welding filtration system:
• Position and model of the nozzle • Suction power of the suction unit • Particle filter device of the correct model and size • Power of the gas filter • Meets the required filtration system • ESD anti-static standard requirements • Easy to operate and maintain

About Ocean Instruments and Filtronic Smoke Purification Beijing Ocean Industrial Technology Co., Ltd. (Ocean Instruments for short) is a company dedicated to the field of electronic testing and maintenance. With a professional, focused and dedicated business philosophy, the pursuit of "not greater, but "Stronger" corporate strategic goal, facing the challenge of lead-free soldering technology, through exclusive agent of Filtronic's fume purification and air filtration system in Sweden, perfect the work site environment of high-temperature welding fume purification, laboratory air cleaning and other fields, Do your part for the construction of environmental protection.

——Contributed by Zhou Haitao, Beijing Ocean Industrial Technology Co., Ltd.

@This information Beijing Ocean Industrial Technology Co., Ltd. reserves the right to modify, if reprinted, please indicate the source.

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