摘要
简捷炼油过程模型广泛应用于运行监测、在线计算、实时优化等领域,但大多数模型只是将输入、输出变量进行关联,无法计算出各组分流量组成,难以集成在模拟软件中进行全流程模拟。本研究简化了炼油分离过程,开发了基于CAPE-OPEN标准的简捷炼油塔模型。首先,将炼油过程简化为连续的分离单元,根据实际产品数据校正模型参数,实现某一实际工况流程模拟;其次,将模型参数与实际工况操作变量数据相结合,采用径向基函数插值确定操作变量对模型参数的影响关系,实现多种工况流程模拟;最后,通过常减压蒸馏工业装置实例的3种工况进行验证。结果表明:各工况模拟结果与Aspen计算结果相比,初馏塔塔顶油馏出温度点偏差大多在2%以内,常减压蒸馏塔各侧线油的馏出温度点平均偏差在3%以内;与实际结果相比,平均误差都在5%以内,符合工程允许误差范围要求。所建模型的计算速度快,各塔均在0.2 s左右完成计算,适用于在线生产、调度等。
Simple refining process model is widely used in operation monitoring,on-line calculation,real-time optimization and other fields.However,most of the models only correlate the input and output variables,so they can not calculate the composition of each group of diverting quantities and can not be integrated into the simulation software to simulate the whole process.In this study,the separation process was simplified,and a simple refinery column model based on CAPE-OPEN standard was developed.Firstly,the refining process was simplified as a continuous separation unit,and the model parameters could be corrected according to the actual product data to simulate a real process.Secondly,the model parameters were combined with the actual operating variable data,and radial basis interpolation was used to establish the influence of operating variables on the model parameters,so as to realize the simulation of various operating conditions.Finally,three working conditions of commercial atmospheric and vacuum distillation unit were verified.The results showed that compared with Aspen’s calculation results,the deviation of the preflash column was mostly within 2%,and the average deviation of the side lines of the atmospheric and vacuum column was less than 3%;compared with the actual results,the average error is less than 5%,in line with the allowable engineering error range.The calculation speed of the model is fast,and the calculation of each column is completed in about 0.2 s,which is suitable for on-line production and scheduling.
作者
焦云强
陈玉石
王建平
Jiao Yunqiang;Chen Yushi;Wang Jianping(Petro-Cyber Works Information Technology Co.,Ltd.,Beijing 100007)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2024年第8期164-177,共14页
Petroleum Processing and Petrochemicals
关键词
简捷炼油模型
过程建模
CAPE-OPEN
在线模拟计算
常减压蒸馏装置
simple refining model
process modeling
CAPE-OPEN
online simulation calculation
atmospheric and vacuum distillation unit
