基于响应曲面法的轻烃燃气制气过程参数优化  

Parameter optimization of light hydrocarbon gas production process based on response surface method

作　　者：严康 王景刚 柳朋浩 刘彪 张书元 康新星 YAN Kang;WANG Jinggang;LIU Penghao;LIU Biao;ZHANG Shuyuan;KANG Xinxing(School of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,Hebei,China)

机构地区：[1]河北工程大学能源与环境工程学院,河北邯郸056038

出　　处：《能源化工》2024年第2期33-39,共7页Energy Chemical Industry

摘　　要：轻烃燃气制气方便、燃烧性能优良,是天然气良好的补充燃气。针对目标热值下混空轻烃燃气系统的输配安全性问题,提出采用数值分析的方法对燃气制气过程进行多响应优化设计。基于Aspen Plus软件建立了混空轻烃燃气气化模型,基于PENG-ROB物性方法研究了混空比、制气压力、戊烷质量分数和重组分质量分数对燃气露点及热值的影响,并进行响应曲面试验设计,得到响应变量拟合方程,通过满意度函数法对响应面结果进行多响应优化,得到使响应变量同时达到最优时的参数组合。结果表明,制气过程中,制气压力对所得燃气露点影响最大,混空比对所得燃气热值影响最大。当混空比为1∶3.61、制气压力为20 kPa、戊烷质量分数为90%、重组分质量分数为0.29%时,燃气热值达到规定值29.30MJ/m^(3),且露点达到最低,为-34.01℃。Light hydrocarbon gas is convenient to produce gas and has good combustion performance,which is a good supplementary gas to natural gas.Aiming at the safety problem of mixed-air light hydrocarbon gas system under target calorific value,a numerical analysis method for multi-response optimization design of gas-making process is presented.A mixed-air light hydrocarbon gas gasification model is established based on Aspen Plus software.Based on PENG-ROB method,the effects of mixing ratio,gas production pressure,pentane content,and recombination content on dew-point and calorific value of gas are studied.The response surface test is designed,and the response variable fitting equation is obtained.The multi-response optimization is carried out on the response surface results by the satisfaction function method,and the parameter combination is obtained when the response variables reach the optimal at the same time.The results show that the gas production pressure has the greatest effect on the dew-point and the air-mixing ratio has the greatest effect on the calorific value of the gas in the process of gas production.When the mixing ratio is 1∶3.61,the gas production pressure is 20 kPa,the pentane content accounts for 90%,and the recombination content accounts for 0.29%,the calorific value of the gas reaches the specified value of 29.30 MJ/m^(3) and the dew-point reaches the lowest point of -34.01℃.

关 键 词：轻烃 气化 数值模拟 响应曲面法 满意度函数 

分 类 号：TE626.7[石油与天然气工程—油气加工工程] TQ517.5[化学工程]