coal tar naphtha

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• coal tar — noun a tar formed from distillation of bituminous coal; coal tar can be further distilled to give various aromatic compounds • Hypernyms: ↑pitch, ↑tar • Substance Meronyms: ↑naphthalene * * * noun : tar obtained by the destructive distillation of …   Useful english dictionary

• naphtha — naphthous, adj. /naf theuh, nap /, n. 1. a colorless, volatile petroleum distillate, usually an intermediate product between gasoline and benzine, used as a solvent, fuel, etc. Cf. mineral spirits. 2. any of various similar liquids distilled from …   Universalium

• Coal gasification — is the process of producing coal gas, a type of syngas–a mixture of carbon monoxide (CO), hydrogen (H2), carbon dioxide (CO2) and water vapour (H2O)–from coal. Coal gas, which is a combustible gas, was traditionally used as a source of energy for …   Wikipedia

• Tar — is a viscous black liquid derived from the destructive distillation of organic matter. Most tar is produced from coal as a byproduct of coke production, but it can also be produced from petroleum, peat or wood.Types of tarGeneralThe word tar is… …   Wikipedia

• Naphtha — Naph tha (n[a^]f th[.a] or n[a^]p th[.a]), n. [L. naphtha, Gr. na fqa, fr.Ar. nafth, nifth.] 1. (Chem.) The complex mixture of volatile, liquid, inflammable hydrocarbons, occurring naturally, and usually called {crude petroleum}, {mineral oil},… …   The Collaborative International Dictionary of English

• Naphtha vitrioli — Naphtha Naph tha (n[a^]f th[.a] or n[a^]p th[.a]), n. [L. naphtha, Gr. na fqa, fr.Ar. nafth, nifth.] 1. (Chem.) The complex mixture of volatile, liquid, inflammable hydrocarbons, occurring naturally, and usually called {crude petroleum}, {mineral …   The Collaborative International Dictionary of English

• Coal liquefaction — is the process of producing synthetic liquid fuels from coal. Contents 1 Methods 1.1 Pyrolysis and carbonization processes 1.2 Hydrogenation processes 1.3 …   Wikipedia

• naphtha — [naf′thə, nap′thə] n. [L < Gr naphtha, naphtha, bitumen < Pers neft, pitch < ? IE base * nebh , damp, water > Gr nephelē, cloud, fog] 1. a flammable, volatile, oily liquid produced by the fractional distillation of petroleum: it is… …   English World dictionary

• Naphtha — Not to be confused with naphthalene, a solid benzene derivative which is the main ingredient in mothballs. Naphtha (  /ˈn …   Wikipedia

• naphtha — SYN: petroleum benzin. [G.] coal tar n. SYN: benzene. wood n. SYN: methyl alcohol. * * * naph·tha naf thə, nap n any of various volatile often flammable liquid hydrocarbon mixtures used chiefly as solvents and diluents * * * naph·tha… …   Medical dictionary

• naphtha — noun /ˈnæfθə/ a) Naturally occurring liquid petroleum. The Common Room and the Library were lit by anbaric light, but the Scholars preferred the older, softer naphtha lamps in the Retiring Room. b) Any of a wide variety of aliphatic or aromatic… …   Wiktionary