摘要:
The present disclosure relates to a carbon-based nanomaterial composition that may be formed from a gas mixture. The gas mixture may include acetylene gas at a molar ratio AGmol/GMmol of at least about 0.25 and not greater than about 0.99, oxygen gas at a molar ratio OGmol/GMmol of at least about 0.01 and not greater than about 0.50, hydrogen gas at a molar ratio HGmol/GMmol of at least about 0.05 and not greater than about 0.70, and methane gas at a molar ratio MGmol/GMmol of at least about 0.25 and not greater than about 0.99. The carbon-based nanomaterial composition may have a carbon hybridization ratio Psp3/Psp2 of at least about 0.0 and not greater than about 5.0, where Psp3 is the percent of carbon within the carbon-based nanomaterial composition having a sp3 hybridization and Psp2 is the percent of carbon within the carbon-based nanomaterial composition having a sp2 hybridization.
摘要:
Secondary heat may be added to a particle production process. The particles may be, for example, carbon particles. Among other things, the secondary heat addition may result in change in surface area of the carbon particle(s), change in structure of the carbon particle(s), reduced wall fouling, reduced energy consumption and/or increased throughput. Apparatus for performing the process is also described.
摘要:
A refractory system for a reactor for producing carbon black. The system comprises a plurality of refractory bricks having an elongate axis arranged to provide at least one path through which a gas can flow. The path extends substantially perpendicular to the elongate axis and a plurality of the refractory bricks present a cross-sectional aspect to the gas How which decreases, in the downstream direction, from a maximum aspect to reduce dead regions in gas flow adjacent the refractory bricks.
摘要:
Carbon blacks having a carbon content greater than 99%, a mean particle diameter of 250 to 300 A, an electrical resistivity, measured under a pressure of 6.3 bars, of 0.270 to 0.350 ohm.cm and a DBP index of 400 to 500 ml per 100 g of black are disclosed together with a process for their preparation by incomplete combustion of acetylene in air. These blacks may be used especially for the manufacture of electric cells.