METHOD OF PREPARING FIBROUS CARBON STRUCTURES USING CATALYTIC PYROLYSIS Russian patent published in 2007 - IPC D01F9/127 D01F9/133 

FIELD: carbon materials.

SUBSTANCE: invention relates to technology of preparing fibrous carbon materials via pyrolysis of structure and nonaromatic hydrocarbons and provides a method residing in that catalyst in the form of dust-like nickel-based alloy is atomized into argon-blown reactor, heated to 600-1150°C, after which hydrocarbon gas is continuously supplied and gaseous pyrolysis products are withdrawn. When pyrolysis process is stopped, product is cooled in common with catalyst. Distinguishing feature of invention is that inert gas and catalyst are introduced through jet atomizer into reactor provided with heaters disposed above and below disk mounted therein. Catalyst is supplied to atomizer through measuring device into settling chamber shaped as reverted barrel with cross-section in the form of rotated disk sector, wherein dust-like catalyst precipitates onto upper surface of the disk in a 1-3-mm layer during the time of activated disk rotation drive. Then, hydrocarbon gas is supplied from the heated lower side of the disk surface. Gaseous pyrolysis products are withdrawn from nipples disposed in upper part of reactor and settling chamber. When pyrolysis process is ended, disk rotation drive is actuated and solid pyrolysis products are removed by the aid of scraper into cooled pyrolysis product intake tank, into which inert gas is also fed. End of pyrolysis process is determined from reduced concentration of hydrogen and pyrolysis products withdrawn from reactor. Stirring of gas medium in the reactor is accomplished by rotation of disk provided with blades attached to its lower surface.

EFFECT: improved quality of product.

3 cl, 4 dwg, 2 ex