The major influencing factors of blending cokernaphtha for 90 RON unleaded gasoline are its distillation range, octane number, existent gum and mercaptan content.
Considering the high contents of olefins and nitrogen, the whole fraction of delayed coker distillates (including light and heavy naphtha, gas oil) must be hydrotreated.
延迟焦化馏出油(包括汽油、柴油及蜡油)的烯烃含量和氮含量高，必须进行加氢精制。
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The refinery coker dry gas is treated with the dry gas plant, then sent into the Primary reformer to substitute for a part of naphtha as the feed for ammonia production.