A mist collector plays the same roles as that of a fume collector which is to decrease the amount of mist, fumes and aerosols that is present in a work environment. Both of the equipment can be used in treatment of media streams including a combination of components such as liquid and vapor or solid and vapor. The mist collector together with the fume collector is often used with many different types of machining equipment and other types of devices that produce oil mists, mass of smoke and debris during an operation. In a typical setting, these collectors are often manufactured to act as source collectors that are responsible in capturing materials in a direct manner and these may also act as ambient collectors that have the capacity to treat the air that is circulating around the area.
Smoke together with fumes are considered to be sub-micron particulate because they are a by-product of various process including tempering, welding, quenching, machining at very high speed with the aid of coolants and processing of rubber as well as plastic.
There are three different types of mist collector and smoke collector – media filter collectors, centrifugal collectors and electrostatic collector. The media filter type of mist eliminators are also known as cartridge mist collectors. With this type, the use of HPA filters is common in order to take away any industrial mist as well as smoke oil present. During operation, the air that has fumes or mist particles are trapped inside the cartridge with the help of a mediums such as blower or a fan. After capturing, these are transported to pass by the filter and this is where the trapping of particles, mist and droplets occur with the use of media material.
Centrifugal collectors do its job with the help of a filter element that rotates and then these trapped mists are transformed into larger forms of droplets. Once the droplets are enlarged, the centrifugal force created by the rotating filter is the one responsible in propelling them away from the filter drum and into the casings inside walls instead where it can be removed in the process. The advantage of using the centrifugal systems for the mist cooling is that it can drain the oil and mist through other methods without depending solely on gravity and because of this the compressor is free to run in a continuous manner.
Electrostatic precipitator collectors or ESP operated with the help of high voltage that is charging every particles and droplets of mist and in the process gathering them together. Streams consist of smoke as well as mist goes through the collector and then travels to an area where there are electrodes with high voltage charge present. The particles inside the stream are charged with the help of the electrodes and this is the reason why they stick to plates and surfaces that have the opposite charge. The collection surface is then cleaned regularly to get rid of the particles either by manual or automatic methods.