The experimental results show: delayed coking for coal tar can obtain higher fuel oil yield, lower wax oil yield and better products distribution.

实验结果表明：煤焦油延迟焦化可以得到较高的燃料油产率，较低的蜡油产率和较好的产品分布。

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The change rule that coking yield and coke VCM increase as the coking period shortens in the commercial delayed coking unit has been calculated by the model.

应用该模型计算出工业焦化装置成焦周期缩短后，焦炭收率和焦炭挥发分增加的变化规律；

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

根据提高延迟焦化装置轻质油收率、降低焦炭和干气收率的作用机理，研制了一种延迟焦化增收剂。在实验室模拟延迟焦化装置上，对五种性质不同的原料渣油进行了空白和加剂试验。

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The process of steering public finances toward a sustainable path long term interest rates (the yield on gilts) would have been delayed .

FORBES: Chancellor Addresses UK's Dreadful Debt, Saves Economy