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A wood waste burner, known as a teepee burner or wigwam burner in the United States and a beehive burner in Canada, is a free-standing conical steel structure usually ranging from 30 to 60 feet in height. They are named for their resemblance to beehives, teepees or wigwams. A sawdust burner is cylindrical. They have an opening at the top that is covered with a steel grill or mesh to keep sparks and glowing embers from escaping. Sawdust and wood scraps are delivered to an opening near the top of the cone by means of a
conveyor belt A conveyor belt is the carrying medium of a belt conveyor system (often shortened to belt conveyor). A belt conveyor system is one of many types of conveyor systems. A belt conveyor system consists of two or more pulleys (sometimes referred to ...
or Archimedes' screw, where they fall onto the fire near the center of the structure. Teepee or beehive burners are used to dispose of waste wood in
logging Logging is the process of cutting, processing, and moving trees to a location for transport. It may include skidding, on-site processing, and loading of trees or logs onto trucks or skeleton cars. Logging is the beginning of a supply chain ...
yards and sawdust from sawmills by incineration. As a result, they produce a large quantity of smoke and ash, which is vented directly into the atmosphere without filtering, contributing to poor air quality. The burners are considered to be a major source of air pollution and have been phased out in most areas. There are a few beehive burners remaining in Western Canada. Teepee burners went out of general use in the Northwestern United States in the early 1970s, and are prohibited from operation in Oregon, as well as southwestern Washington State. The wood waste is now used as a component in various forest products, such as
pellet fuel Pellet fuels (or pellets) are biofuels made from compressed organic matter or biomass. Pellets can be made from any one of five general categories of biomass: industrial waste and co-products, food waste, agricultural residues, energy crops, and ...
, particle board and mulch.


Gallery

File:Balaclava Mill - Sawdust Burner.JPG, Sawdust burner in Balaclava, Ontario, Canada File:Halfwaywigwam.JPG, Wigwam burner in Halfway, Oregon File:Wigwam Burner (Drain, Oregon).jpg, Wigwam burner in Drain, Oregon File:Wigwam Burner (Swisshome, Oregon).jpg, Wigwam burner near
Swisshome, Oregon Swisshome is an unincorporated community in Lane County, in the U.S. state of Oregon. It is along the Siuslaw River northeast of Mapleton, on Oregon Route 36. The community's name was conferred in honor of a local Swiss family. Swisshome post o ...
File:Wigwam Burner (Mapleton, Oregon).jpg, Wigwam burner near Mapleton, Oregon File:WIGWAM BURNER AT THE LOUISIANA PACIFIC LUMBER PLANT AT POST FALLS, IDAHO - NARA - 548157.jpg, Wigwam burner at a Louisiana-Pacific lumber plant in Post Falls, Idaho (May 1973)


See also

* Air pollution in British Columbia * Clean Air Act of 1970


References


External links

* {{cite news , url= http://www.thefreelibrary.com/A+BURNER+OBSESSION.(Arts+&+Literature)(On+a+quest+to+preserve+the...-a0101453053 , title= A Burner Obsession , last= Keefer , first= Bob , work= The Register-Guard , location= Eugene, Oregon , via=The Free Library , date= May 4, 2003 , accessdate= 2008-05-28
Historic images of teepee burners in Oregon
from the Salem, Oregon, Public Library

Environmental issues in Canada History of the Pacific Northwest Incineration Logging