摘要
为了降低芳烃装置二甲苯塔换热网络的能量消耗,本文利用Aspen Plus软件建立了芳烃装置中以二甲苯塔为热源的整个换热流程模型。通过对比模型计算值与装置实际标定值,确定了该模型的准确性。在此基础上利用该软件的灵敏度分析功能找到了该换热系统的可调变量,最后以二甲苯塔塔底热负荷最低为目标函数,可调变量为自变量,换热网络中各塔产品质量和换热温差为约束条件,对整个换热系统进行了优化计算,结果表明,优化后的二甲苯塔塔压可降低0.09 MPa,回流比降低0.1,塔底热负荷可减少1510 kW。整个换热系统共可节约能源7774 kW。
In order to reduce energy consumption of the heat exchange network with xylene tower, the heat exchange network model with xylene tower as heat source was established by using Aspen Plus software. By comparing the model calculated value with the actual value, the accuracy and effectiveness of the model was confirmed. The adjustable variables of the heat exchange system were found by using the sensitivity analysis function of the software, and finally based on minimum of xylene reboiler heat load, product quality and the heat transfer temperature as the constraint condition, the heat exchange system is optimized. The results showed that the pressure of xylene tower can reduce 0.09 MPa, reflux ratio is decreased 0.1, rehoiler heat load can reduce 1510 kW. The whole heat exchange system can save energy 7774 kW.
出处
《计算机与应用化学》
CAS
CSCD
北大核心
2013年第12期1496-1498,共3页
Computers and Applied Chemistry
