Abstract

Coking has been studied with and without the 7% Ni/CNT catalyst. It has been shown that tar coking results in the formation of gaseous and liquid products and petroleum coke at a temperature of 350°C without the catalyst. Thermolysis products are formed due to the elimination of side hydrocarbon chains from the initial polyaromatic hydrocarbons. Gaseous products consist of C₁–C₆ hydrocarbons and sulfur-containing gases H₂S and COS. The fractional composition of liquid thermolysis products is studied. It has been found that 50% of the liquid products are gasoline and diesel fractions. The 7% Ni/CNT catalyst is prepared via impregnation. The effect of the 7% Ni/CNT catalyst on the tar coking process in the 300–550°C range of temperatures is studied. The addition of the 7% Ni/CNT catalyst to tar increases the yield and lowers the content of sulfur in petroleum coke due to the conversion of some into hydrogen sulfide and COS, which are removed with the gas phase. Electron microscope study shows that the petroleum coke resulting from the catalytic coking of tar proves to be reinforced with carbon nanotubes.

中文翻译：

---

含镍催化剂对焦油焦化过程的影响

摘要

研究了使用和不使用 7% Ni/CNT 催化剂时的焦化。已经表明，在没有催化剂的情况下，焦油焦化会在 350°C 的温度下形成气态和液态产品以及石油焦。由于从最初的多环芳烃中消除了侧烃链，形成了热解产物。气态产品由 C ₁ –C ₆烃和含硫气体 H _{2 组成}S 和 COS。研究了液体热解产物的部分组成。已经发现，50%的液体产品是汽油和柴油馏分。7% Ni/CNT 催化剂通过浸渍制备。研究了 7% Ni/CNT 催化剂在 300-550°C 温度范围内对焦油焦化过程的影响。将 7% Ni/CNT 催化剂添加到焦油中可提高石油焦的产率并降低石油焦中的硫含量，因为其中一些转化为硫化氢和 COS，并随气相除去。电子显微镜研究表明，焦油催化焦化产生的石油焦经证明是用碳纳米管增强的。