High activity catalytic cracking additive DYC-HAA
High Activity RFCC Additive DYC-HAA
基于專有DYC催化劑技術(shù)平臺開發(fā)的高活性FCC重油轉(zhuǎn)化助劑HAA（High Activity Additive），兼具高活性、高穩(wěn)定性和高選擇性，為重油催化裂化加工提供了新的高效選擇。
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助劑的質(zhì)量指標(biāo)和典型數(shù)據(jù)
Table 1 Quality Index and Typical Property of DYC-HAA
800oC、100%水蒸氣條件下老化；標(biāo)準(zhǔn)輕柴油進(jìn)料，460℃反應(yīng)。
*Catalyst steamed under 800oC/100% steam; standard light diesel feed, cracking temperature 460 ℃.
從圖1可見，隨著催化劑上沉積的金屬鎳和釩含量增加到一定水平后，對比渣油催化劑的活性急劇下降，而具有獨(dú)特孔結(jié)構(gòu)的高稀土含量DYC-HAA重油助劑顯示出了卓越的抗金屬污染性能，活性衰減緩慢。
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.
圖1 金屬污染對DYC-HAA助劑和對比催化劑活性的影響
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應(yīng)評價裝置（ACE）對DYC-HAA助劑的催化性能進(jìn)行了評價。表3列出了市售重油裂化劑中加入20wt%含量的DYC-HAA助劑后的裂化反應(yīng)評價結(jié)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重油助劑的ACE催化裂化評價結(jié)果
Table 3 Results of DYC-HAA on ACE Unit
*催化劑經(jīng)100%水蒸汽，17小時，800℃老化處理；
*Catalyst steamed at 800℃/100% steam/17h;
從表3的催化裂化反應(yīng)評價結(jié)果可見，在參比的渣油催化劑中加入20 wt%含量的DYC-HAA重油助劑后：
（1）活性增加，轉(zhuǎn)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，液化氣+汽油+柴油2.13wt%，基本來自裂解的重油；
（4）生焦和生氣選擇性好，在輕收和總液收大幅增加狀況下，干氣和焦炭產(chǎn)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.
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