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High Activity RFCC Additive DYC-HAA

基于专有DYC催化剂技术平台开发的高活性FCC重油转化助剂HAA（High Activity Additive），兼具高活性、高稳定性和高选择性，为重油催化裂化加工提供了新的高效选择。
　　High activity FCC heavy oil conversion additive is developed based on exclusive DYC catalyst technology platform, featuring high activity, stability and selectivity, and providing a new efficient selection for RFCC processing.
一、物化性能
I. Physical and Chemical Properties

表1  DYC-HAA助剂的质量指标和典型数据
Table 1 Quality Index and Typical Property of DYC-HAA

800oC、100%水蒸气条件下老化；标准轻柴油进料，460℃反应。
　　*Catalyst steamed under 800oC/100% steam; standard light diesel feed, cracking temperature 460 ℃.

从图1可见，随着催化剂上沉积的金属镍和钒含量增加到一定水平后，对比渣油催化剂的活性急剧下降，而具有独特孔结构的高稀土含量DYC-HAA重油助剂显示出了卓越的抗金属污染性能，活性衰减缓慢。
　　Figure 1 shows that as the content of metallic nickel and vanadium increases to a certain extent, the activity of competitive RFCC catalyst decreases sharply, while the DYC-HAA with special pore structure and high rare earth content has excellent performance in metal contamination resistance, and slow activity decay.

图1  金属污染对DYC-HAA助剂和对比催化剂活性的影响
Figure 1  Influence of Metal Contamination on Activity of DYC-HAA and Competitive Catalyst

采用小型固定流化床催化裂化反应评价装置（ACE）对DYC-HAA助剂的催化性能进行了评价。表3列出了市售重油裂化剂中加入20wt%含量的DYC-HAA助剂后的裂化反应评价结果。

The catalytic performance of DYC-HAA is evaluated with small fixed ACE unit. The results of DYC-HAA with content of 20wt% in RFCC agent on sale are listed in Table 3.

表3  DYC-HAA重油助剂的ACE催化裂化评价结果
Table 3 Results of DYC-HAA on ACE Unit

*催化剂经100%水蒸汽，17小时，800℃老化处理；
　　*Catalyst steamed at 800℃/100% steam/17h;
　　从表3的催化裂化反应评价结果可见，在参比的渣油催化剂中加入20 wt%含量的DYC-HAA重油助剂后：
（1）活性增加，转化率提高了2.76wt%；
（2）重油裂解能力增加，重油收率降低2.16wt%；
（3）汽油+柴油收率增加1.51，液化气+汽油+柴油2.13wt%，基本来自裂解的重油；
（4）生焦和生气选择性好，在轻收和总液收大幅增加状况下，干气和焦炭产率基本持平。
　　Table 3 shows that after 20 wt% DYC-HAA is put into the competitive RFCC catalyst:
（1）Activity increases, and conversion rate is higher by 2.76wt%;
（2）Cracking ability of bottoms improves, and yield of bottoms is lower by 2.16wt%;
（3）Gasoline+ LCO yield increases by 1.51, LPG+gasoline+LCO yield 2.13wt%, generally from the cracked bottoms;
（4）The selectivity of green coke and gas is good, and the yield of dry gas and coke remains the same under large increase of light oil yield and total liquid yield.