REDUCED PUFFING NEEDLE COKE FROM COAL TAR

• Main Authors: SHAO, RICHARD, L, MILLER, DOUGLAS, J, CHANG, CHING-FENG, TOMASEK, AARON, LEWIS, IRWIN, C
• Format: Patent
• Language: English; French
• Published: 10.12.2009
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; COMPOUNDS THEREOF; CONCRETE; CRACKING HYDROCARBON OILS; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS; FUELS; INORGANIC CHEMISTRY; LIME, MAGNESIA; LUBRICANTS; METALLURGY; MINERAL WAXES; NON-METALLIC ELEMENTS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; PYROLIGNEOUS ACID; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; REFRACTORIES; SLAG; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TREATMENT OF NATURAL STONE; WORKING-UP PITCH, ASPHALT, BITUMEN, TAR

A reduced puffing needle coke is formed, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures. Un coke en aiguilles à expansion réduite est formé, lequel comprend une quantité moindre d'azote de sorte que des articles en carbone produits à partir dudit coke présentent une expansion minimale lors du chauffage à des températures de graphitisation.