摘要
研究了催化裂化过程中热裂化反应和催化裂化反应的特点和影响因素。结果表明 ,反应温度、剂油比和反应时间能显著地影响热裂化反应和催化裂化反应。采用缩短反应时间的方法 ,能抑制催化裂化过程中不利的热裂化反应和二次裂化反应 ,达到调整产品分布和产品组成的目的。
Thermal cracking reactions lead to excessive light gas yield and lower overall product values during the present typical high temperature commercial FCC operation. Catalyst properties and operating parameters (reaction temperature, catalyst to oil ratio, contact time) have great influence on thermal and catalytic cracking reactions. The short contact time of oil and catalyst may suppress the detrimental thermal cracking reaction dramatically. A satisfactory result could be obtained through selection of proper catalyst and operating conditions (for example, the very short contact time of gas and oil).
出处
《当代化工》
CAS
2004年第6期317-320,328,共5页
Contemporary Chemical Industry
关键词
催化裂化
热裂化
二次裂化
反应温度
剂油比
反应时间
catalytic cracking
thermal cracking
secondary cracking reactions
reaction temperature
catalyst to oil ratio
reaction time
