Fuels wood powder

Wood powder is a kind of upgraded fuel that is burned in large-scale combustion plants for heat production. However, it is possible to use wood powder for power generation as well. It is a biofuel made of sawdust, shavings and bark. The raw material is crushed, dried and milled to tine particles in order to obtain the best fuel properties. There are many different wood powder qualities dependant on different physical properties such as particle size distribution, particle shape and also moisture content. The powder is usually handled in a closed system from milling to storing in silos to avoid the risk of dust explosions. The raw materials and type of mill used determine the properties of the wood powder (Paulrud et al, 2002). 

Patent Fuel.—In moBt of the operations of coalmining, os also in coking establishments, much refuse accumulates which is frequently very rich in combustible matter but owing to Its being in small dust or powder, it cannot be used in the furnaoe by itself, A similar waste attends the manufacture of wood and peat charcoal, and without the aid of some cohesive matter, this considerable portion of the original fuel becomes useless. 

Active Base consisted of NG and an active adsorbent consisting of a fuel (such as wood-meal) and an oxygen contg salt (such as K or Na nitrate). These expls are known in US as Straight Dynamites (Ref 14, p283) (See also Atlas Powders in Vol l,p A498-R)... 

Paulrud, S., Mattsson, J. E. and Nilsson, C. (2002). Particle and Handling Characteristics of Wood Fuel Powder Effect of Different Mills. Fuel Process. Technol., 76, 23-39. 

Wood rosin FF. The so called "Yo-Chan", which means a foreign resin in Japanese is the most popularly used resin in Japan. It is a slightly yellowish mass. When it is powdered, it cakes gradually. It melts at 72°C, and keeps a clear liquid state up to about 200°C without any colour change. When it is further heated, it vaporizes without carbonization. Having such character, it melts and envelopes the surface of oxidizer particles to cause an interruption or irregularity or even delay in the combustion of compositions when it is used alone as fuel. 

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