连续重整装置原料预处理单元优化效果分析

Optimization effect analysis of the input material pretreatment in continuous catalytic reforming unit

以中石化洛阳分公司70万t/a连续重整装置为例,介绍了对采取先分馏后加氢工艺流程的大冲量攻关优化。结果表明:增加石脑油进料换热器后,不仅预处理单元处理量有明显提高,而且拔头油中大于或等于C6组分的质量分数从38.77%降低到34.59%(其中拔头油中大于或等于C7组分的质量分数从9.29%降低到3.36%),重整进料中小于或等于C5组分的质量分数由1.73%减少到1.01%;同时优化了换热网络,彻底解决了石脑油预分馏塔进料温度不高带来的问题,实现了预处理单元大冲量优化攻关。

Take the 700 kt/a continuous catalytic reforming unit of SINOPEC Luoyang Petrochemical Company as instance,the large capacity optimization operation for fractional distillation before hydrogenation process is introduced.The results show that the pretreatment capacity is greatly improved,and the components that ≥ C6 in the topped oil is reduced from 38.77％ to 34.59％ （the components that ≥ C7 in the topped oil is reduced from 9.29％ to 3.36％）,the components that ≤ C5 in the reforming feedstock is reduced from 1.73％ to 1.01％.At the same time,the network of the heat exchanger is optimized,and the problem of low temperature of naphtha pre-fractionating tower feedstock is worked out.