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。
2
An additive to increase delayed coker yield has been prepared based on the mechanism of enhancing lightoil yield and reducing the yields of coke and dry gas.