ISO 647:1974 褐煤.用低温蒸溜法测定焦油、水、煤气和焦渣的产率

标准编号：ISO 647:1974

中文名称：褐煤.用低温蒸溜法测定焦油、水、煤气和焦渣的产率

英文名称：Brown coals and lignites — Determination of the yields of tar, water, gas and coke residue by low temperature distillation

发布日期：1974-11

标准范围

样品在铝罐中加热至520°C。分解产物进入水冷接收器；当气体产物进入大气时，焦油和水被冷凝。对焦炭残渣和接收器及其内容物进行称重。焦油的质量通过与甲苯或二甲苯夹带测定的水质量的差值来获得。此外，还使用甲苯或二甲苯夹带法单独测定煤中的水分，以便计算分解水。从100中减去焦炭残渣、焦油和分解水的百分比之和，即可得出气体的百分含量。

The sample is heated in an aluminium retort to a temperatur of 520 °C. 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.

标准预览图