摘要
从重油催化裂化外甩油浆性质、组成结构特征入手,借助热转化反应特性理论和经验公式,计算出重油FCC油浆经延迟焦化加工的焦炭收率达到40%以上。对比工业生产中延迟焦化装置掺炼FCC油浆前后产品收率,模拟出FCC油浆经焦化加工的产品分布,验证了此前计算的理论焦炭收率,核算出加工效益。就焦化装置和当前国家燃料油消费税政策而言,FCC油浆加工比作为商品外销经济效益好。但焦化装置掺炼油浆对重油催化裂化装置产品分布有不良影响,催化装置效益明显下降。综合焦化、催化两套装置的整体效益看,加工油浆是没有效益的。延迟焦化掺炼FCC油浆对产品质量、设备运行也造成一定的影响。
Based upon the properties and compositions of FCC slurry and with the help of empirical for- mula analysis, it is theoretically concluded that coke yield is over 40% when the FCC slurry is processed in delayed coking unit. By comparison of product yields before and after blending FCC slurry into the feed of commercial delayed coking units, the product distribution of simple slurry being processed in delayed coking unit is simulated, the theoretically calculated coke yield is verified and the economic benefit is calculated. In consideration of delayed coking unit itself and the current consumer tax policy, the profit from processing FCC slurry is better than that of selling it as product. Whereas, the blending of FCC slurry into feed of delayed co- king unit has a negative impact on the product distribution of RFCC unit, and economic benefit of RFCC unit is obviously reduced. In consideration of economic benefits of both delayed coking unit and RFCC unit, the processing of slurry offers no profit. In addition, blending RFCC slurry into the delayed coking unit also affects the product quality and equipment operation.
出处
《炼油技术与工程》
CAS
2014年第1期7-11,共5页
Petroleum Refinery Engineering
关键词
FCC油浆
延迟焦化
组成
结构
结焦
FCC slurry, delayed coking, composition, structure, coking
