凝析油中不含胶质和沥青质，在轻质组分中（C<10）链状饱和烃含量为57％，环烷烃为35％。
There is no resin and asphaltene in the condensate, but 57% chain alkane and 35% cycloal-kane exist in light fraction ( C<10 ) .
在惰性气氛中，利用差热分析仪研究了不同添加剂改质煤沥青筑路油中沥青质的热失重情况。
The thermal weight loss of asphaltine in the pitch road building oil modified with different additives is studied with derivative thermo - gravimetric analyzer in inert atmosphere.
重质燃料油中通常含有一定量的硫及硫化物，燃烧过程中绝大部分形成二氧化硫，二氧化硫在一定条件下与氧化合形成三氧化硫。
The most of sulfur and sulfide that exist in the heavy fuel oils can be transformed into SO2, and SO2 can be oxidized to form SO3 during combustion of heavy fuel oil at certain condition.
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