Novick, Kim & Lee, PLLC
Process for producing light olefins and aromatics
A process for producing light olefins and aromatics, which comprises reacting a feedstock by contacting with a catalytic cracking catalyst in at least two reaction zones, wherein the reaction temperature of at least one reaction zone among the reaction zones downstream of the first reaction zone is higher than that of the first reaction zone and its weight hourly space velocity is lower than that of the first reaction zone, separating the spent catalyst from the reaction product vapor, regenerating the separated spent catalyst and returning the regenerated catalyst to the reactor, and separating the reaction product vapor to obtain the desired products, light olefins and aromatics. This process produces maximum light olefins such as propylene, ethylene, etc from heavy feedstocks, wherein the yield of propylene exceeds 20% by weight, and produces aromatics such as toluene, xylene, etc at the same time.
CHINA PETROLEUM & CHEMICAL CORPORATION RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC
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Xingtian Chaogang Jun Wei Jiushun Hong Zhijian Dadong Xieqing Zhigang
Shu Xie Long Wang Zhang Nie Da Li Wang Zhang