METHOD OF CONTINUOUS PYROLYTIC SATURATION OF POROUS ELONGATED MATERIAL Russian patent published in 2009 - IPC C01B31/00 C01B31/04 C04B35/83 C01B31/36 

FIELD: chemistry.

SUBSTANCE: method involves electric contact heating of porous elongated workpiece more than temperature of thermal dissociation of chemical reagent, movement of workpiece through reactor, supply of reaction mixture to reactor, removal of reaction products from reactor and cooling of workpiece; at that, heating of workpiece, its cooling, supply of reaction mixture and removal of reaction products are performed periodically; at that, reaction mixture is supplied to reactor at the stage of cooling the workpiece during 1-10 s. After this time is over, reaction products are removed from reactor till residual pressure of 10^-2-10^-3 atm is reached, and then the cycle is repeated till the required thickness of the deposited layer is reached. Reaction mixture is supplied to reactor at the cooling stage at least once. Band from compacted thermal expanded graphite, or nonwoven fibrous carbon or silicone-carbide materials, or bundles of carbon or silicone-carbide fibres are used as workpiece.

EFFECT: increase of homogeneous deposition of pyrolytic material as to thickness of elongated workpieces.

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