石油焦质量的研究

Study on quality of petroleum coke

本文对我国多家炼油厂生产的石油焦及其煅后焦的质量进行了试验研究。研究结果表明:煅后焦中的灰分及主要的金属微量元素,如硅、钒、镍等的含量比相应的生石油焦稍有提高;煅后焦中的硫含量与生石油焦相比明显降低,不同硫含量的石油焦在煅烧过程中的脱硫率不同,揭示了石油焦中含硫组分的复杂性;煅后焦中的硫含量对其煅后焦的二氧化碳反应性产生明显的抑制作用,而钒、钙、等杂质元素催化了煅后焦的二氧化碳、空气反应性。

A detailed study was carried out on quality of petroleum coke, especially the influences of minor elements in green petroleum coke （ GPC ） from the different locations in China on the calcined petroleum coke （CPC） reactivity. It was revealed from the study results that the content of ash and such major impurity trace elements as Vanadium in CPC were increased a little after calcination eompared with the GPC, while the sulfur content was reduced to the different extents, which showed that the sulfur in GPC from the different sources had a different desulfurization rate due to the complexity of sulfur containing composition. It was shown from the test results that a great inhibition effect on CO2 reactivity was caused by sulfur existing in the CPC while such impurities as Vanadium, Calcium and Nickel compounds would promote its air reactivity.