摘要
提出了生焦反应焦化炉给热及生焦反应给热比的概念 ,在确保焦化炉管不发生严重结焦的条件下 ,研究了焦化炉注气及炉出口温度的优化方法 ,以提高生焦反应焦化炉给热及延迟焦化装置液体收率。利用过程模拟软件 ,分别对单面辐射及双面辐射焦化炉进行了管内外过程模拟。结果表明 ,注气比维持在 1% ,炉出口温度由 4 90℃到 5 0 5℃时 ,每升高 5℃ ,生焦反应焦化炉给热增加 4 5～ 5 9kJ/kg ;炉出口温度维持在 5 0 5℃ ,注气比由 3%至 1%每降低 0 .5个百分点 ,生焦反应焦化炉给热增加 2 0～ 32kJ/kg。采用调整注气比和炉出口温度优化同时操作的方案 。
The definitions of heat quantity supplied for coking reaction and comparative heat quantity for coking reaction were given. Under the precondition of nor-generation of serious coking in tube, a new method for improving heat quantity supply in coking reaction was put forward by optimizing the water injection and increasing exit temperature of coking heater. This method can increase conversion rate at exit of coking heater and control the fall of temperature in coke tower during coking reaction. In this way, the liquid yield of coking plant can increase. The simulation of heat reaction process in coking heater was made. The result showed that under the conditions of water injection rate being 1% and the temperature at exit of heater keeping 490 ℃ to 505 ℃, the heat quantity of coking heater increased by 45 kJ/kg to 59 kJ/kg. When the exit temperature kept in 505 ℃ and water injection rate decreased by 0.5 % in the range of gas injection rate from 3 % to 1 %, the heat quantity of coking heater would increase by 20 kJ/kg to 32 kJ/kg. The simultaneous adjustment of gas concentration and optimization of exit temperature of coking heater may be a better project for improving heat quantity of coking heater in heat reaction.
出处
《石油大学学报（自然科学版）》
CSCD
北大核心
2003年第6期97-100,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
中国石油化工集团公司科技攻关项目 ( 10 0 0 83 )
关键词
生焦反应
焦化炉
给热方法
热量
给热比
注汽比
重油
coking heater
coking reaction
heat quantity
comparative heat quantity
water injection rate
heat conversion
