延迟焦化装置分馏塔扩能改造  

Expansion revamping of fractionator for delayed coking unit

作　　者：王龙飞[1] 姜伟[1] 

机构地区：[1]中国石油化工股份有限公司齐鲁石化分公司,山东省淄博市255400

出　　处：《炼油技术与工程》2015年第11期17-19,共3页Petroleum Refinery Engineering

摘　　要：介绍了中国石油化工股份有限公司齐鲁石化分公司Ⅲ套延迟焦化装置扩能改造情况。装置采用可调循环比技术,消除了制约装置大处理量下长周期运行的瓶颈,降低了循环比;分馏塔蜡油下回流采用蜡油分配洗涤管代替原来的塔盘,拆除了人字挡板,增加了循环油系统,有效地解决了分馏塔底易结焦的问题。改造后循环比降至0.05,处理能力达到1.7Mt/a;蜡油收率增加1～2百分点;焦炭产率系数下降到1.45。改造后总能耗为882MJ/t,基本达到设计值,有效地提高了装置的处理能力,增加了装置液体总收率,降低了焦炭产量,提高了全厂经济效益。The expansion revamping of the delayed coking unit Ⅲ of SINOPEC Qilu Petrochemical Company is introduced. In the revamping,the adjustable recycle ratio process has been applied,which has solved the bottlenecking problems of long-term operation at large capacity and reduced the recycle ratio. The lower heavy wax oil reflux of fractionation column uses heavy wax oil reflux coil instead of the original tray. The herringbone tray is dismantled and recycle oil system is provided,which has effectively solved the problem of coking at the bottom of fractionators. After revamping,the recycle ratio is reduced to 0. 05,and capacity is increased to 1. 7 million tons a year. The heavy wax oil is increased by 1% ～ 2% and the coke make coefficient is lowered by 1. 45. The total energy consumption after revamping is 882 MJ / J,which substantially meets the design specification. The capacity of the unit has been increased,the total liquid yield has been raised,the coke make has been reduced and the economic benefit of the refinery has been improved.

关 键 词：延迟焦化装置 可调循环比 蜡油分配管 循环油 

分 类 号：TE624.32[石油与天然气工程—油气加工工程]