摘要
针对催化裂化低价值中间产品难以转化利用的特点,在自制电磁感应高频高温裂解装置上考察了3种不同来源的催化裂化低价值产品高温裂解生产乙炔的反应性能。反应温度和停留时间是制约劣质油高温裂解生产乙炔的主要因素,以中国石化北京燕山分公司的LCO为原料进行高温裂解的反应结果表明:在进料速率为0.3 g min、反应温度为1800℃、停留时间为8 ms的条件下,乙炔收率达到7.90%;氢气是LCO高温裂解生产乙炔的副产物,在反应温度为1300℃、停留时间为50 ms时,氢气收率达到7.54%。不同原料对乙炔收率影响的考察结果表明:适当增加原料中的链烷烃和氢含量有利于乙炔的生成;在进料速率为0.3 g min、反应温度为1400℃、停留时间为22 ms的条件下,中国石化石家庄炼化分公司加氢LCO和中国石化扬州分公司催化裂化重循环油高温裂解的乙炔收率分别为11.13%和12.70%。
In view of the characteristics of low-value intermediate products in catalytic cracking,the reaction performance of catalytic cracking of low-value products from three different sources to produce acetylene at high temperature was investigated in a self-made electromagnetic induction high-frequency and high-temperature cracking unit.Reaction temperature and residence time were main factors restricting pyrolysis of inferior oil at high temperature for acetylene production.Using light cycle oil from SINOPEC Beijing Yanshan Company as feed for high temperature cracking reaction,the results showed that at the conditions of a feed rate of 0.3 g min,a reaction temperature of 800℃,and a residence time of 8 ms,the acetylene yield reached 7.90%.Hydrogen was by-product of LCO pyrolysis to produce acetylene,and yield of hydrogen reached 7.54%when the reaction temperature was 1300℃and the residence time was 50 ms.Increasing the content of alkane and hydrogen in the raw materials was beneficial to the formation of acetylene.Under the conditions of a feeding rate of 0.3 g min,a reaction temperature of 1400℃and a residence time of 22 ms,the acetylene yields were 11.13%and 12.70%using hgdrogenated LCO from SINOPEC Shijiazhuang Refing and Chemical Company and heavy cycle oil from SINOPEC Yangzhou Company as feed,respectively.
作者
李泽坤
黄绍兵
龚剑洪
Li Zekun;Huang Shaobing;Gong Jianhong(SINOPEC Research Institute of Petroleum Processing,Beijing 100083;SINOPEC Jiujiang Company)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2021年第6期44-49,共6页
Petroleum Processing and Petrochemicals
基金
中国石油化工股份有限公司合同项目(118004-1)。
关键词
高温裂解
乙炔
催化裂化轻循环油
停留时间
氢气
high temperature cracking
acetylene
light cycle oil
residence time
hydrogen
