劣质油高温裂解生产乙炔的探索研究

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℃...

STUDY OF PRODUCTION OF ACETYLENE BY PYROLYSIS OF INFERIOR OIL AT HIGH TEMPERATURE

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 1 300 ℃ 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 1 400 ℃ and a residence time of 22 ms, the acetylene yields were 11.13% and 12.70% using hydrogenated LCO from SINOPEC Shijiazhuang Refing and Chemical Company and heavy cycle oil from SINOPEC Yangzhou Companyas feed, respectively.