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APPARATUS FOR INCREASING THE GRAPHITE CONTENT OF CARBON BLACKS AND THE USE OF THESE CARBON BLACKS
APPARATUS FOR INCREASING THE GRAPHITE CONTENT OF CARBON BLACKS AND THE USE OF THESE CARBON BLACKS
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机译:用于增加碳黑的石墨含量和这些碳黑的使用的装置
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摘要
The invention relates to improving the degree of graphitization of carbon black produced by subjecting hydrocarbons which are liquid or gaseous under normal conditions to a thermal conversion reaction in the presence of oxygen or an oxygen-containing gas and steam, if desired, at temperatures of 1200 DEG to 2000 DEG C. and pressures of 1 to 80 bars. To this end, the carbon black is conveyed downwardly in a quasi-fluid state, within 1 to 5 hours through a sojourn zone in upright position, the sojourn zone being maintained at a temperature of at least 1200 DEG C. The invention relates to an apparatus for carrying out this process, the apparatus comprising a graphite tube; a steel container concentrically surrounding the graphite tube; a feed pipe penetrating into the interior of the graphite tube; a water-cooled discharge means; and a nitrogen feed inlet arranged below the lower end of the graphite tube; the space left between the graphite tube and steel container being occupied by insulating material.
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