废旧轮胎裂解油加氢装置的汽提工艺方案比较  

Comparison of stripping process schemes for waste tire cracking oil hydrogenation unit

作　　者：李志 LI Zhi(Shanghai Runhe Kehua Engineering Design Co Ltd,Shanghai 200102,China)

机构地区：[1]上海润和科华工程设计有限公司,上海200120

出　　处：《石化技术与应用》2024年第6期460-464,共5页Petrochemical Technology & Application

摘　　要：使用Aspen Plus模拟软件对33万t/a废旧轮胎裂解油加氢装置的2种汽提工艺方案(双塔方案和单塔方案)进行对比,并讨论了热、冷低分油温度(T_(h),T_(c))以及汽提蒸汽(1.0 MPa,250℃)总耗用量(mst)对硫化氢脱除效果及汽提塔塔底流出物收率(Y)的影响。结果表明:在热、冷低分油进料条件均相同前提下,这2种汽提方案的塔底流出物含硫化氢量均低于10μg/g,Y均大于93.0%;权衡考虑装置脱硫效果及能耗,选择m_(st)为0.36 t/h较佳;单塔工艺方案优于双塔方案,前者不仅运行更加稳定、操作弹性更大,而且主要设备总投资成本仅为后者的85%,尽管其当量综合能耗比后者的高0.08 MJ/t。Using Aspen Plus simulation software,two stripping process schemes(dual-column scheme and single-column scheme)for 330 kt/a waste tire cracking oil hydrogenation unit were compared,and the effects of hot and cold low separation oil temperature(T_(h),T_(c))and stripping steam(1.0 MPa,250℃)total consumption(mst)on the hydrogen sulfide removal efficiency and the bottom effluent yield(Y)from stripping-column were discussed.The results showed that,under the same feed conditions of hot and cold low separation oil,the hydrogen sulfide content of stripping-column bottom effluent of above two stripping process schemes were both lower than 10μg/g,and Y were both greater than 93.0%;Overall considering desulfurization effect and energy consumption of this process unit,the m_(st)at 0.36 t/h was better choice.The single-column process scheme was superior to the dual-column process scheme,the former not only operated more stably and had greater operational flexibility,but also the total investment cost of the main equipment was only 85%of the latter,although its equivalent comprehensive energy consumption was 0.08 MJ/t higher than that of the latter.

关 键 词：废旧轮胎裂解油 汽提塔 硫化氢 热低分油 冷低分油 投资成本 能耗 

分 类 号：TE992.3[石油与天然气工程—石油机械设备]