石油学报（石油加工）
石油學報（石油加工）
석유학보（석유가공）
Acta Petrolei Sinica (Petroleum Processing Section)
2015年
5期
1063-1068
,共6页
杜晓辉%张海涛%高雄厚%何志伟%李志庆
杜曉輝%張海濤%高雄厚%何誌偉%李誌慶
두효휘%장해도%고웅후%하지위%리지경
催化裂化催化剂%Y型分子筛%镍钒污染%稀土%性能评价
催化裂化催化劑%Y型分子篩%鎳釩汙染%稀土%性能評價
최화열화최화제%Y형분자사%얼범오염%희토%성능평개
FCC catalyst%Y zeolite%Ni and V contamination%rare earth%performance evaluation
分别通过浸渍法和循环污染法对Y型分子筛和 FCC催化剂进行镍、钒污染，考察了在干燥和水热条件下镍、钒对分子筛结晶度的影响，采用高级催化裂化评价装置（ACE）评价了镍、钒污染的 FCC催化剂及稀土改性FCC催化剂的催化性能。结果表明，只有在水蒸气存在条件下，钒会破坏分子筛的晶体结构；在REY分子筛中，镍的存在对分子筛结构的破坏略有影响。在FCC催化剂中，镍、钒之间存在相互作用，与单独钒污染的催化剂相比，镍、钒同时污染的催化剂的比表面积和微反活性略有提高，反应转化率由72.14％增至78.02％，重油收率由10.49％下降至7.62％。与相应的镍、钒污染FCC催化剂相比，镍、钒污染的稀土改性FCC催化剂所得转化率与总液体收率均明显增加，重油收率下降，稀土元素的引入提高了催化剂的抗镍、抗钒性能，提高了催化剂的催化性能。
分彆通過浸漬法和循環汙染法對Y型分子篩和 FCC催化劑進行鎳、釩汙染，攷察瞭在榦燥和水熱條件下鎳、釩對分子篩結晶度的影響，採用高級催化裂化評價裝置（ACE）評價瞭鎳、釩汙染的 FCC催化劑及稀土改性FCC催化劑的催化性能。結果錶明，隻有在水蒸氣存在條件下，釩會破壞分子篩的晶體結構；在REY分子篩中，鎳的存在對分子篩結構的破壞略有影響。在FCC催化劑中，鎳、釩之間存在相互作用，與單獨釩汙染的催化劑相比，鎳、釩同時汙染的催化劑的比錶麵積和微反活性略有提高，反應轉化率由72.14％增至78.02％，重油收率由10.49％下降至7.62％。與相應的鎳、釩汙染FCC催化劑相比，鎳、釩汙染的稀土改性FCC催化劑所得轉化率與總液體收率均明顯增加，重油收率下降，稀土元素的引入提高瞭催化劑的抗鎳、抗釩性能，提高瞭催化劑的催化性能。
분별통과침지법화순배오염법대Y형분자사화 FCC최화제진행얼、범오염，고찰료재간조화수열조건하얼、범대분자사결정도적영향，채용고급최화열화평개장치（ACE）평개료얼、범오염적 FCC최화제급희토개성FCC최화제적최화성능。결과표명，지유재수증기존재조건하，범회파배분자사적정체결구；재REY분자사중，얼적존재대분자사결구적파배략유영향。재FCC최화제중，얼、범지간존재상호작용，여단독범오염적최화제상비，얼、범동시오염적최화제적비표면적화미반활성략유제고，반응전화솔유72.14％증지78.02％，중유수솔유10.49％하강지7.62％。여상응적얼、범오염FCC최화제상비，얼、범오염적희토개성FCC최화제소득전화솔여총액체수솔균명현증가，중유수솔하강，희토원소적인입제고료최화제적항얼、항범성능，제고료최화제적최화성능。
Nickel (Ni) and Vanadium (V) contaminated Y zeolite and FCC catalysts were prepared by impregnation method and cyclic contamination ,respectively .The effects of Ni and V on the crystallinity of zeolite in dry atmosphere and hydrothermal condition were investigated . The catalytic performance of FCC catalyst and rare earth element (RE ) modified FCC catalysts contaminated by Ni and V were tested in an advanced catalytic cracking evaluation (ACE) device . Results showed that the effect of V on crystallinity of Y zeolite was evident only when steam was present .For the rare earth containing zeolite ,Ni destroyed the zeolite structure slightly .A direct interaction existed between V and Ni in FCC catalyst . Compared with the FCC catalyst contaminated only by V ,the FCC catalyst contaminated by both Ni and V possessed more specific surface area and slightly more MAT value ,with the increase of reaction conversion from 72.14% up to 78.02% ,the decrease of heavy oil yield from 10.49% to 7.62% .The conversion and total liquid yield of FCC reaction were higher ,the heavy oil yield was lower over the RE modified FCC catalyst contaminated by both Ni and V than those over the Ni and V contaminated FCC catalyst ,meaning that the introduction of rare earth elements in FCC catalysts enhanced the tolerance to Ni and V and cracking performance of the catalyst .
