Coke dust

The dominant commercial form of elemental phosphoms is the a-white aHotrope. a-White phosphoms is often designated simply as because the soHd consists of tetrahedral P molecules. In its pure form, it is a white soHd that forms a clear Hquid when melted. However, the commercial product is generally somewhat yellow, both as a soHd and as a Hquid, owing to the presence of small amounts of a ted phosphoms aHotrope. Commercial white phosphoms may also be slightly gray in color because of incomplete separation of coke dusts and other impurities generated in the manufacturing process. 

Coke oven discharging (pushing) Hydrocarbons, coke dust Hoods to fans and venturi scrubbers, low-energy scrubbers followed by ESPs (may use water spray at oven outlet)... 

Flug-haien, m. airport, -koks, m. flue coke, coke dust, -kraft, /. power of flight, flight power. -linie, /. = Flugbalm airline, -mehl, n. mill dust, -platz, m. airfield, airport. -post, /. air mail, air post, -r.ost, m. rust in thin film, flugs, adv. quickly, instantly. 

Group F Garbon black, coal, or coke dust... 

The flammability and explosivity of high-sulfur petroleum coke dust (particle size <75 pm) were examined. Air-dried powder was non-explosive but fire-prone above 400°C. A 5 mm layer became incandescent at 420-470° and a dust cloud ignited at 520-660°C [1]. The fire and explosion hazards of petroleum coke or anthracite, when used in the manufacture of furnace electrodes, may be reduced by heat treatment [2],... 

Coking Heater stack gas (CO, SOx, NOx, hydrocarbons, and particulates), vents and fugitive emissions (hydrocarbons), and decoking emissions (hydrocarbons and particulates) Coke dust (carbon particles and hydrocarbons)... 

Particulate emissions from decoking can also be considerable. Coke-laden water from decoking operations in delayed cokers (hydrogen sulfide, ammonia, suspended solids) and coke dust (carbon particles and hydrocarbons) occur. 

Wind (aeolian) transport (relocation by wind) can also occur and is particularly relevant when catalyst dust and coke dust are considered. Dust becomes airborne when winds traversing arid land with httle vegetation cover pick up small particles such as catalyst dust, coke dust, and other refinery debris and send them skyward. Wind transport may occur through suspension, saltation, or creep of the particles. 

H.Wells, "Coal, Coke and Coal Chemicals," McGraw-Hill, NY (1950) 4)Kirk St Othmer 6, (1951), 899 (Coke as a fuel) 5)H.Gesner St H.R.Zbinden, SchweizVerGas - und Wasser-fachMonatsBull 32, 45-52 (1952) St CA 47, 7196 (1953) (Tests with coke dusts have shown that it is practically impossible to ignite their mixts with air. A weak ignition was observed only once in 15 tests) 6)W.Gluud, "Handbuch der ICokerei, K.Knapp, Diisseldorf (1953) 7)0. 

EXPLOSION and FIRE CONCERNS amount of airborne coal dust should be kept to a minimum coal and coke dust bunkers should be fitted with explosion venting systems. 

Twelve hundred to 1500 lbs. of impure antimony are charged into the furnace, previously heated to a red heat. As soon as the metal is melted, generally in less than half an hour, 3 to 7 per cent, of soda, with which is mixed a little coke-dust or fine charcoal, is added, according to the purity of the metal After this the heat is raised to bright redness in order to fuse the soda. During the charging and the fusion, vapour of antimonious and arsenious oxides is given off. 

Group Di Acetone, alcohol, gasoline, petroleum fractions, lacquer solvents, and similar vapors Group El Metal dust Group Fi Carbon black, coal or coke dust Group 6 Grain dust... 

Examples of only a few additives are carbon black, carnauba wax, coconut shell, coke dust, macerated filler, shell flour, vermiculite, and wax. Many additives, especially those that are conductive may affect electrical properties. Most plastics, which are poor conductors of current, build up a charge of static electricity. Antistatic agents can be used to attract moisture, reducing the likelihood of a spark or discharge. 

Examples of a few are alpha cellulose, ash, calcium carbide, calcium carbonate, carborundum, channel black, china clay, coral, coke dust, diatomaceous earth, dolomite [double carbonate of lime and magnesia filler having the formula (CaCOg) and (MgCOg)], ferrite, flint, fixller s earth, glass spheres, hemp, keratin, lampblack, leather-dust, macerate... 

Trials with oxygen enrichment of the furnace blast air were first carried out in the United Kingdom as long ago as 1964. In general, it is considered too expensive to use routinely, but a small amount of enrichment is used in several smelters. At Cockle Creek in 1975 oil was injected into the tuyeres and replaced up to 12% of the coke. There were no adverse results and oil injection continued until the rising cost of oil rendered it uneconomic. Subsequently, in 1986 the Harima smelter became the first ISF to inject solids on a consistent basis. Up to 6% of the lump coke charge was replaced by injected dry quench coke dust. This practice continued until November 1995. 

F Carbonaceous dusts, carbon black, coal black, charcoal, coal/coke dusts (>8% total entrapped volatiles). ... 

Coke dust, sawdust, heavy metal salts... 

Exposure to coke dust (2g/ day), PAHs-contaminated fe (100 ng/L/day), smelter soot-spiked sediment (2% w/w), smelter discharge-spiked sediment (2% w/w) for 50 days (total experiment duration)... 

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