Coal tar is a by-product of coking, namely tar distillationresidue in distillation kettle black material.
煤焦沥青Coal tar:煤焦沥青是炼焦的副产品,即焦油蒸馏后残留在蒸馏釜内的黑色物质。
2
The components of the hydrochloric and the fire_retardant in the distillate and distillationresidue were analysed after the waste water was distilled .
同时分析了将姑废水简单蒸馏后馏出液及釜液中盐酸和阻燃剂的含量。
3
Any of various thick, dark, sticky substances obtained from the distillationresidue of coal tar, wood tar, or petroleum and used for waterproofing, roofing, caulking, and paving.