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| 摘要: |
| 对DFP型无毒钝化剂的轻油微反评价和工业中试都显示，在FCC过程中适,中有效轻油收率，降低氢气和焦炭产率，钝镍效果明显。结合TPR，TPD，XRD和量子化学计算的研究结果表明，DFP的钝镍活性组分在FCC再生条件下（约700℃，氧化性气氛）分解生成氧化鲜，进而和氧化镍在（220）晶面发生晶格取代，增加了Ni^2 的能量最低空轨道（LUMO）能量，降低了高价镍在FCC反应条件（约500℃，还原性气氛）下的还原度，抑制了FCC催化剂上低价镍的强脱氢活性，从而达到钝镍的目的。 |
| 关键词: 炼油 催化裂化 钝化剂 镍 沸石 |
| DOI： |
| 分类号:TE624.99 |
| 基金项目:中国石油天然气集团公司“九五”科技攻关项目((96)科字第198号). |
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| Application of Non-Toxic Nickel Passivator and the Mechanism Study |
|
Ye Tianxu
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| Abstract: |
| The excellent effectiveness of nickel passivation has been demonstrated by the industrial application of a new type of nickel passivator named DFP.In this paper,the methods of MAT,TPR and XRD were used,combined with quantum chemistry calculation.The resul |
| Key words: FCC, passivator,Ni,zeolite, |
