![]() ![]() Out of all of the particulate-control devices, cyclone separators are among the least expensive. For particulates around 200 micrometers in size, gravity settling chambers or momentum separators are a better option. As well, these separators are not effective on extremely large particulate matter. However, there do exist high efficiency cyclones that are designed to be effective on particles as small as 2.5 micrometers. Most cyclones are built to control and remove particulate matter that is larger than 10 micrometers in diameter. The cleaned flue gas escapes out the top of the chamber. These chambers are shaped like an upside-down cone to promote the collection of these particles at the bottom of the container. Since these larger particles have difficulty following the high-speed spiral motion of the gas and the vortex, the particles hit the inside walls of the container and drop down into a collection hopper. An animated GIF showing how particles move through a cyclonic separator. Contrarily, larger components of particulate matter have more inertia and are not as easily influenced by the vortex. ![]() The lighter components of this gas have less inertia, so it is easier for them to be influenced by the vortex and travel up it. This spiral formation and the separation is shown in Figure 2. The inside of the chamber creates a spiral vortex, similar to a tornado. In a cyclone separator, dirty flue gas is fed into a chamber. How It WorksĬyclone separators work much like a centrifuge, but with a continuous feed of dirty air. For example, several different models of one cyclone type can exist, and the sizes can range from a relatively small 1.2-1.5 meters tall (about 4-5 feet) to around 9 meters (30 feet)-which is about as tall as a three story building!. The size of the cyclone depends largely on how much flue gas must be filtered, thus larger operations tend to need larger cyclones. It is important to note that cyclones can vary drastically in their size. In addition, several cyclone separators can operate in parallel, and this system is known as a multicyclone. This prevents finer filtration methods from having to deal with large, more abrasive particles later on. ![]() Cyclone separators is one of many air pollution control devices known as precleaners since they generally remove larger pieces of particulate matter. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |