ISO 647-1974 褐煤 用低温干馏法测定焦油、水、煤气和焦渣产率

标准号：ISO 647-1974
中文标准名称：褐煤 用低温干馏法测定焦油、水、煤气和焦渣产率
英文标准名称：Brown coals and lignites; Determination of the yields of tar, water, gas and coke residue by low temperature distillation
标准类型：D21
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：D21
国际标准分类号：73.040
适用范围：The sample is heated in an aluminium retort to a temperatur of 520 鳦. The products of decomposition pass into a water-cooled receiver; the tar and water are condensed while gaseous products pass to atmosphere. The coke residue and the receiver and its contents are weighed. The mass of tar is obtained by difference to the mass of water determined by entrainment with toluene or xylene. A separate determination of moisture in the coal, also by entrainment with tulene or xylen, is amde so that the decomposition water can be calculated. The peecentage of gas is obtained by subtracting from 100 the sum of the percentages of coke residue, of tar and decomposition water.