A continuous process for synthesis of nanofibrous carbon from methane in a reactor with a moving bed of the Ni-Al2O3 catalyst (90 wt.% Ni) and intensively recirculated gas flow is considered. Dependencies for calculating outlet characteristics of the gas mixture and catalyst are suggested. Comparison of various types of continuous reactors shows that the suggested reactor is preferable. (C) 2007 Elsevier B.V. All rights reserved.