PROCESSES FOR HIGH SEVERITY FLUID CATALYTIC CRACKING SYSTEMS

Embodiments of methods for converting gas condensate into a product stream comprising propylene comprise feeding gas condensate at a top region of a downflow high severity fluidized catalytic crackingreactor (HSFCC), where the gas condensate comprises: at least 50% by weight paraffins, and less than 0.1 % by weight olefins. The method further comprises feeding catalyst to the top region of the downflow HSFCC reactor in an amount characterized by a catalyst to gas condensate weight ratio of about 5:1 to about 40:1, where the catalyst comprises nano-ZSM-5 zeolite catalyst having an average particle diameter from 0.01 to 0.2 [mu]m, a Si/Al molar ratio from 20 to 40, and a surface area of at least 20 cm2/g. The method further comprises cracking the gas condensate in the presence of the catalyst at a reaction temperature of about 500 DEG C to about 700 DEG C to produce the product stream comprising propylene. 将凝析油转化为包含丙烯的产物流的方法的实施方案包括在下流式高苛刻度流化催化裂化反应器(HSFCC)的顶部区域供给凝析油，其中所述凝析油包含：至少50重量％的链烷烃和小于0.1重量％的烯烃。该方法还包括将催化剂进料