论文部分内容阅读
世界邻甲酸生产主要集中在工业发达国家,采用天然分离法的公司有;美国Merichem公司、PMC公司、stimson Lumber公司、法国的Huiles公司、德国Ruetgerswerke公司、英国Coalite Fuels and Chemicals公司等。采用苯酚烷基化法生产的有:美国通用电气公司、德国的巴斯夫公司、URBK公司、荷兰的通用电气公司,英国合成化学公司、日本的三菱石化、旭化成和三井东压公司等。无论是天然法或化学合成法,由于邻甲酸生产工艺均联产其它产品,因此全球邻甲酚的生产能力难以做准确的统计,据估计现在年生产能力约为4万-4.5万t。我国只有少数厂家采用天然分离法和邻甲苯胺重氮化水解
The world’s production of ortho-formic acid is mainly concentrated in industrial developed countries. Companies using natural separation methods include Meribel, PMC, Stimson Lumber, Huiles of France, Ruetgerswerke of Germany, and Coalite Fuels and Chemicals of the United Kingdom. Produced by phenol alkylation methods are: General Electric Company, BASF, URBK, General Electric of the Netherlands, Synthetic Chemicals of the United Kingdom, Mitsubishi Petrochemicals of Japan, Asahi Kasei and Mitsui Toatsu. No matter whether it is natural or chemical synthesis, since the production process of ortho-formic acid is co-produced with other products, it is difficult to make accurate statistics on the production capacity of o-cresol in the world. It is estimated that the annual production capacity is about 40,000-45 thousand tons. There are only a few manufacturers in China that use natural separation methods and o-toluidine diazotization hydrolysis