Dealing with Dust: Dust Collection
Modern industrial processes produce significant quantities of airborne dust made up of a variety of particulates, which can be harmful to workers who breathe in the dust. Industrial processes such as welding, laser and plasma cutting, abrasive blasting, metal-working, mixing, and grinding handle dry materials which release minute dust particles in the air where they float freely or settle on surfaces.
Industrial environments require dust control systems that are designed to protect plant personnel from exposure to these hazardous airborne dust particulates.
Risks of Dust
Dust particles have hazardous effects on a person’s respiratory passages, especially people with allergies. Several factors contribute to the hazardousness of dust, such as the size of the dust particle, the type of dust, and the type of substances that accompany the dust particulates, such as smoke or oil.
Most inhaled particles are captured in the cilia inside the nose and don’t reach the lungs. However, smaller dust particles get trapped in the upper respiratory tract where they can cause or aggravate asthma, pneumonia and bronchitis. Studies show a correlation between increased dust particle content in the air and an increased frequency of diseases of the respiratory tract, cancer and cardiovascular diseases. Dust particles can also contain toxic poisons and heavy metal dust, which are extremely hazardous to health.
Plus, dust emissions have an impact on the environment by settling on the soil or in water.
How to Remove Dust
Air purification involves the separation of particles from the air. Dust extraction hoods or direct dust extraction on enclosed machines are commonly used and this involves conveying air containing impurities to a dust filter where the air is purified. The air is then discharged into the premises or to the open air outside. Because, in most cases, this involves large airflows, heat exchangers are generally used for recovering heat from the purified air as a means of reducing power consumption.
Textile filters, such as pleated cartridge filters, have a high dust collecting efficiency, as much as 99% or more in many cases and their efficiency for collecting small particles is also high. The performance of filters depends on a combination of several factors: filtering capacity, diffusion, forces of inertia, etc. Textile filters are well suited for arresting particles of 1 – 100 µm in size.
Dust collectors are devices that filter dust from polluted air generated by industrial processes and discharge clean air into the environment. Efficient dust collectors protect employees from dry particulates and pollution in the air.
Clean Air America offers the Smart Collector, a completely NEW generation of cartridge collectors suitable for a wide variety of applications and superior to all other designs out on the market. It features a 50% better filter lifetime vs. other vertical style collectors and 75% better filter lifetime vs. horizontal designs. The CA Smart Collector™ has the lowest overall TCO (Total Cost Of Ownership) on the market!