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coke

coke

The Columbia Encyclopedia, 6th ed. | 2008 | Copyright

coke substance obtained by the destructive distillation of bituminous coal . Coke bears the same relation to coal as does charcoal to wood. A hard, gray, massive, porous fuel, coke is the solid residue remaining after bituminous coal is heated to a high temperature out of contact with air until substantially all components that easily vaporize have been driven off. The residue is chiefly carbon, with minor amounts of hydrogen, nitrogen, sulfur, and oxygen. Also present in coke is the mineral matter in the original coal, chemically altered and decomposed.

Since the vapor-producing constituents are driven off during coke production, coke is an ideal fuel for stoves and furnaces in which the environment is unsuitable for the complete burning of bituminous coal itself. In the form of oven coke it is primarily used when a porous fuel with few impurities and high carbon content is desired, as in the blast furnace to make iron. Coke is also used in other metallurgical processes, such as the manufacture of ferro-alloys, lead, and zinc, and in kilns to make lime and magnesium. Exceptionally large strong coke is known as foundry coke and is used in foundry cupolas to smelt iron ores. The smallest sizes of coke are used to heat buildings.

The majority of coke produced in the United States comes from byproduct coke ovens. The coke is prepared in retorts or furnaces of silica brick, and the byproducts (chiefly ammonia, coal tar, and gaseous compounds) are saved. These volatile gases are collected and sent to the byproduct plant where various byproducts are recovered. In nonrecovery coke plants, originally referred to as beehive ovens, the coal is carbonized in large oven chambers; the partially combusted gases collect in a common tunnel and exit via a stack. In recovery coke plants the waste gas exits into a waste heat recovery boiler which converts the excess heat into steam for power generation.

Petroleum coke is the solid residue left by the cracking process of oil refining. Natural coke, or carbonite, is formed by metamorphism from bituminous coal when intrusive igneous rock cuts across a vein of coal.

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coke

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

coke1 / kōk/ • n. a solid fuel made by heating coal in the absence of air so that the volatile components are driven off. ∎  carbon residue left after the incomplete combustion of gasoline or other fuels. • v. [tr.] [usu. as n.] (coking) convert (coal) into coke. coke2 • n. informal term for cocaine.

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coke

The Concise Oxford Dictionary of English Etymology | 1996 | | Copyright

coke solid residue of the dry distillation of coal. XVII (formerly often pl.). prob. identical with north. dial. colk (XIV) core, of unkn. orig.
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T. F. HOAD. "coke." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

T. F. HOAD. "coke." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O27-coke.html

T. F. HOAD. "coke." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-coke.html

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coke

A Dictionary of Earth Sciences | 1999 | | Copyright

coke See CHAR.
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AILSA ALLABY and MICHAEL ALLABY. "coke." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "coke." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O13-coke.html

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Coke

Oxford Dictionary of Rhymes | 2007 | Copyright

Coke •awoke, bespoke, bloke, broke, choke, cloak, Coke, convoke, croak, evoke, folk, invoke, joke, Koch, moke, oak, okey-doke, poke, provoke, revoke, roque, smoke, soak, soke, spoke, stoke, stony-broke (US stone-broke), stroke, toke, toque, woke, yoke, yolk •Holyoake • artichoke • gentlefolk •menfolk • kinsfolk • womenfolk •townsfolk • fisherfolk • holmoak •woodsmoke • cowpoke • slowpoke •backstroke • breaststroke • keystroke •heatstroke • sidestroke • downstroke •sunstroke • upstroke • masterstroke •counterstroke • equivoque •betook, book, brook, Brooke, Chinook, chook, Coke, cook, Cooke, crook, forsook, Gluck, hook, look, mistook, nook, partook, rook, schnook, schtuck, Shilluk, shook, Tobruk, took, undercook, undertook •handbook •chapbook, scrapbook •cash book • passbook • sketchbook •chequebook • textbook •daybook, playbook •casebook • phrase book • dybbuk •pocketbook • copybook • storybook •guidebook • logbook • songbook •scorebook • hornbook • sourcebook •notebook • cookbook • yearbook •picture book • wordbook • workbook •caoutchouc • Windhoek • billhook •fishhook • skyhook • buttonhook •tenterhook • wet look • outlook •Inuk • inglenook • Sihanouk •Pembroke • Innsbruck • donnybrook •Uruk • Osnabrück • Beaverbrook •nainsook

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Free newspaper and magazine articles

Coke emission control.
Magazine article from: Mechanical Engineering-CIME; 12/1/1989
Petroleum coke demand grows steadily.(MARKET REPORT: Petrochemicals)
Magazine article from: China Chemical Reporter; 10/6/2006
Coke bets on Zero to save cola category; Drink giant plans huge marketing...
Magazine article from: Advertising Age; 1/1/2007

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