Two methods of distillation crystallization method and gas chromatography to determine the naphthalene content in coaltaroil were introduced.
介绍煤焦油中萘含量测定的两种方法:蒸馏结晶法和气相色谱法,对两种方法的优缺点及分析结果进行了对比。
2
An experiment and research on cold briquetting coke was conducted with anthracite coal blended with lean coal and fine coking coal and with residuum of modified coaltaroil as the binder.
对无烟煤配入瘦煤和焦粉,用改性焦油洗油残渣做黏结剂,制备冷压型焦进行了试验研究。
3
Our known fossil fuel reserves are soaring. New finds of coal, natural gas, oil, tar sands, and oil shale keep growing, not declining.