52.LFCマイルドガス化プロセスからのタール・酸性成分の水素化熱分解挙動

概要

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Coal derived liquid from mild gasification (LFC) process contains more than 40% of alkylphenols with alkylnaphthalenes and small amout of benzofuran, naphthol and condensed aromatic derivatives. In this study, thermal hydrocracking of the coal derived liquid and related model compounds have been investigated using a small atmospheric flow apparatus at temperatures of 700〜770℃. Rates of demethylation and dehydroxylation for cresols and dimethylphenols have been measured at 700℃ by using toluene as an internal reference and discussed in terms of chemical structure. Thermal hydrocracking of the coal derived liquid produced 20〜40wt% gases and 60〜80wt% liquids. Liquid products, obtained at 770℃, contained 24wt% of BTX, 40wt% of phenol and cresols, and 12wt% of naphthalene and methylnaphthalenes. Yields of useful chemicals, having simple aromatic structure in the liquid product increased with temperature and residence time.
一般社団法人日本エネルギー学会の論文
1997-10-30