芳香族抽出技術の進歩(技術発達史)
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概要
- 論文の詳細を見る
Prior to 1940's, low purity aromatics were recovered from closely fractionated cuts of by-products in coal processing industry. During World War II, based on Edeleanu technology, Modified Sulfur Dioxide Extraction was used for the production of toluene.<BR>The Udex process using liquid-liquid extraction was the first commercially available process for the economical separation of aromatics. "Udex Grade" aromatics rapidly become the benchmark of the industry. In 1960's Shell and UOP commercialized a new liquid-liquid extraction process using Sulfolane solvent.<BR>Extensive commercialization of the Sulfolane demonstrated distinctly lower utility requirements and higher aromatic recoveries. Today, many solvents, for example <I>N</I>-methylpyrrolidone, dimethyl sulfoxide, <I>N</I>-formylmorpholine have been proposed by various licensors.
- 社団法人 有機合成化学協会の論文