Wood Charcoal


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Wood Charcoal

 

a hard, porous, highly carbonaceous product formed during the heating of wood without access (or with limited access) of air in furnaces and retorts (sometimes in campfires as well). Depending on the type of wood, 1 m3 yields 140-180 kg of coal, 280-400 kg of liquid products, and nearly 80 kg of fuel gas. The heat of combustion of wood charcoal is 30,000-35,000 kJ/kg (7,000-8,100 kcal/kg). The density of birch coal is 380 kg/m3. Pines (300 kg/m3) and spruces (260 kg/m3) yield less dense coal.

The high porosity of wood charcoal is responsible for its significant adsorption properties. At normal temperature wood charcoal is capable of combining with the oxygen in air; this is the reason for cases of spontaneous combustion of wood charcoal. The moisture content of wood charcoal unloaded from furnaces and retorts is 2-4 percent. During storage, the moisture content rises to 7-15 percent. The ash content of charcoal should not exceed 3 percent and the content of volatiles, not more than 20 percent. A distinctive feature of wood charcoal is the low content of such admixtures as phosphorus and sulfur, which makes it indispensable in some metallurgical processes.

Wood charcoal is widely used in the production of crystalline silicon, carbon disulfide, activated carbon, and electrocarbon articles and as fuel for domestic use.

References in periodicals archive ?
Wood charcoal is also used for making black gun powder for carbonizing steel, in the production of calcium carbide, sodium cyanide, and carbon tetrachloride, and for making arc electrodes [6].
There is no comparison when it comes to barbecues that use natural lump wood charcoal over chemically-processed or gas heated rocks.
Use the right fuel - what's |really going to make your BBQ is the fuel that you use, try and avoid garage forecourt briquettes and go for lump wood charcoal, you'll recognise it as it actually looks like wood.
com, India's premier research company in export import market research, announced today that India's Wood and Articles of Wood or Wood Charcoal exports in May- 2015 has fallen to US$ 25.
In the case of White Charcoal--(also known as Binchotan) based facial masks, it goes further by saying the substrate containing this particular type of wood charcoal can release anions to relax and calm skin during the application.
Nearly 40% of world's population mainly in Africa and Asia use wood charcoal or coal as kitchen fuel according to The Lancet Respiratory Medicine journal.
Among the topics are the technical viability of biocoke from mixtures of coal and wood charcoal for use in ironmaking, the effect of batch charging equipment on glass furnace efficiency, software for energy education, measuring the carbon dioxide captures on bauxite residue carbonation, anisotropic Curie temperature material, and designing permanent magnet machines for ferrofluid immersion.
Dietary inclusion of wood charcoal in broiler diet improved broiler performance (Kutlu and Unsal, 1998).
Continued widespread indoor use of forest wood charcoal as a household fuel could cause 10m premature deaths by 2030.
They mostly correspond to fragments of wood charcoal from archaeological sites located in the Pre-Pyrenees in Navarre and in the Sierra de Cantabria (Figure 3).
The University of Colorado Boulder's nearly $780,000 will go toward developing a solar toilet that uses concentrated sunlight focused with a solar dish to disinfect liquid and solid waste and turn it into biological charcoal that can replace wood charcoal or chemical fertilizers.
Recycled sawdust, renewable bio-wax and real wood charcoal make up the 100% renewable roasting logs.