不同类型氮化合物在催化裂化过程中的转化规律

Conversion regularities of different types of nitrogen compounds in FCC process

对不同类型氮化合物在催化裂化过程中的转化规律进行了探讨,综述了催化裂化过程中碱性氮化合物导致催化剂失活的机理,探讨了催化裂化催化剂性质及催化裂化反应条件对原料油中氮化合物的转化规律及产品选择性的影响。在催化裂化条件下,氮化合物主要发生环化缩合反应,其次发生烷基化反应,难以发生开环裂化脱氮反应。

The conversion regularities of different types of nitrogen compounds in the catalytic cracking process are discussed. The mechanisms of catalyst deactivation caused by basic nitrogen compounds in FCC process are summarized. The effects of the properties of catalysts and the reaction conditions of catalytic cracking on the conversion regularities of nitrogen compounds in raw oil and the selectivity of products are also discussed. Under the conditions of catalytic cracking,nitrogen compounds mainly undergo cyclization and condensation reactions,followed by alkylation reaction,and hardly undergo ring-opening cracking denitrification reactions.