Patent ID: 6068827
Filing Date: 2000-05-30
Classification: B01J,C01B,C09C

Abstract:
A method for the production of carbon using a decomposition reactor which is connected to a plasma torch where hydrocarbons are decomposed to carbon and hydrogen and said decomposition reactor is provided with a plurality of supply channels through the reactor walls and which has an upper region and a lower region comprising the steps of, in addition to the decomposition products from the plasma torch, supplying a first hydrocarbon gas through the supply channels through the reactor walls at a temperature of between 1,000 and 2,000.degree. C. in an upper region of the reactor, introducing additional hydrocarbon gas at a temperature lower than 1,000.degree. C. at at least one point downstream of where said first hydrocarbon gas is introduced and adjusting the introduction of the additional hydrocarbon gas to obtain a temperature distribution in the reactor and with said first hydrocarbon gas decomposing into carbon and hydrogen so that the carbon part of the hydrocarbon gas from the supply channels is deposited on the carbon from the plasma torch.