FCC催化剂钒污染及捕钒剂的研究  

A Study of the Effects of Vanadium on FCC Catalyst and the V trap

作　　者：吴治国[1] 张玉兰[1] 韩崇家[1] 李承烈[1] 

机构地区：[1]华东理工大学石油加工系,上海200237

出　　处：《华东理工大学学报（自然科学版）》2000年第1期25-28,共4页Journal of East China University of Science and Technology

摘　　要：对一种工业ＦＣＣ催化剂进行处理后，制得载钒量在ｗ ｖ＝ ０．００１～０．０１ 之间的一组样品，并在７５０°Ｃ和１００％ 水蒸汽条件下逐个流化４ｈ，然后进行ＦＴＩＲ酸性表征和ＸＲＤ分析。实验结果表明Ｂ酸和Ｌ酸均随载钒量的增加而减少，在酸性位数目减少的过程中，酸的强弱比例基本不变；ＸＲＤ结果表明，随着载钒量的增加，样品的衍射峰强度几乎呈线性下降。在ｗ ｖ＝ ０．００５ 的载钒量条件下进行不同捕钒剂量的研究，发现捕钒剂加到ｗ ＭｇＯ＝ ０．１１ 时，催化剂的酸量可大幅回升，但酸性有些变化。A commercial FCC catalyst was impregnated with vanadium oxalate solution to prepare a series of samples bearing different weights of vanadium, and then each sample was steamed under 750°C for 4h in fluidized bed. After characterizing the samples by pyridine FTIR and XRD, we find the acid site number decreases with the increasing of vanadium weight on catalyst, but the ratio of strong or weak acid content to the total acid content of catalyst doesn't change; the intensity of XRD was found to be inversely proportional to the vanadium concentration. When the weight of MgO added to catalyst reaches w MgO = 0.11, the acid content of catalyst resumes very well, but the L acid becomes weak.

关 键 词：FCC催经剂 石油加工 催化裂化 

分 类 号：TE624.91[石油与天然气工程—油气加工工程]