气动除焦粉技术在延迟焦化装置的应用  

Application of Pneumatic Fine Coke Removal Technology in Delayed Coking Unit

作　　者：张平[1] 张冲[1] Zhang Ping;Zhang Chong(Cangzhou Branch of China Petroleum&Chemical Corporation,Cangzhou,Hebei,061000)

机构地区：[1]中国石油化工股份有限公司沧州分公司,河北沧州061000

出　　处：《石油化工安全环保技术》2023年第6期22-24,I0002,共4页Petrochemical Safety and Environmental Protection Technology

摘　　要：某公司采用气动除尘技术,通过流场模拟、优化设计、实验验证,开发出一种延迟焦化分馏塔气动除焦粉装备,可有效降低焦化分馏塔产物中的焦粉含量。该技术应用后,分馏塔蜡油升气孔到塔顶的压力降由176 kpa降至144 kpa,对分馏塔的操作状况基本无影响。加氢精制装置原料过滤器平均反冲洗时间间隔由16.4分钟延长到48分钟,反冲洗周期明显延长。焦化柴油中焦粉含量平均值由43.57 mg/l降到7.02 mg/l,焦粉脱除率达到80%以上,效果符合预期。同时,该技术具有运行成本低、占地面积小、焦粉脱除效率高、不易堵塞等优点。In this paper,a pneumatic fine coke removal equipment for delayed coking fractionating column was developed by adopting pneumatic dust removal technology through flow field simulation,optimization design and experimental verification.This equipment can effectively reduce the fine coke content in the product of coking fractionating column.After the application of this technology,the pressure drop from the wax oil riser to the top of the fractionating column decreased from 176kpa to 144kpa,which had virtually no effect on the operation of the fractionating column.The average backwashing time interval of raw material filter in hydrofining unit was extended from 16.4 minutes to 48 minutes,and the backwashing cycle was significantly extended.The average fine coke content in coking diesel oil decreased from 43.57 mg/l to 7.02 mg/l.The fine coke removal rate reached more than 80%and the effect was as expected.Meanwhile,the technology has the advantages of low operating cost,small footprint,high coke removal efficiency and less likely to be plugged.

关 键 词：延迟焦化 气动除尘 焦粉脱除 

分 类 号：TE624.32[石油与天然气工程—油气加工工程]