| 摘要 |
PROBLEM TO BE SOLVED: To obtain a carbon-containing solid held by a carbonaceous carrier by causing a condensable organic substance in a gas generated by the thermal decomposition of an organic substance to be adsorbed to and held by a carbonaceous carrier and polymerizing the condensable organic substances into a high-mol.wt. solid. SOLUTION: This carbon-containing solid is produced by a process comprising a thermal decomposition step wherein an organic substance is thermally decomposed into a thermal decomposition gas and a thermal decomposition residue; a holding step wherein the thermal decomposition gas is contacted with a carbonaceous carrier to cause the condensable organic substance to be held thereby; and a polymerization step wherein a polymerizable component in the held condensable organic substance is polymerized to convert the held organic substance into a carbon-containing solid. The organic substance includes a plastic waste, coal tar, a petroleum distillation residue, coal and petroleum pitches, or the like. The carbonaceous carrier includes coal, charcoal, or the like, and is used preferably in the form of a powder having an average particle size of 0.1-50 μm. The carbon-containing solid carried by a carbonaceous carrier as it is can be used advantageously as a material for producing methane. The condensable organic substance can be effectively prevented from being condensed in a pipeline on the downstream side or on the inner wall of the apparatus in the thermal decomposition step. |
