双塔微型变压吸附制氧机实验和模拟
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摘要
设计一种两吸附床小型PSA制氧机,并在低压舱内模拟海拔高度对两吸附床小型PSA制氧机的影响,同时对结构参数以及操作参数的影响进行考察,建立制氧工艺流程数学模型,通过实验对比,微调模型使之与实际相符,验证模型的准确性,并开展数值仿真与模拟研究,以确定相关的内在参数及外部因素对制氧过程及制氧效果等性能指标的影响规律,得到不同海拔不同工况下,较优的设计参数和操作参数,从而提高制氧效率,降低制氧机的制造和运行成本。
A small two-bed pressure swing adsorption oxygen generator was designed and a series of experiments were carried out in the low-pressure cabin. The influences of structure and operating parameters were investigated simultaneously. The mathematic model of oxygen production process was established. The model was matched with the experiment results to verify the accuracy of the model. Numerical simulation and simulation researches were carried out to determine the relevant intrinsic parameters and external factors on the process of oxygen production and the effect of oxygen production. Performance of oxygen generator at different altitudes with different operating conditions, design parameters and operating parameters were studied to improve the oxygen production efficiency and reduce the manufacturing and operating costs of oxygen generator.
A small two-bed pressure swing adsorption oxygen generator was designed and a series of experiments were carried out in the low-pressure cabin. The influences of structure and operating parameters were investigated simultaneously. The mathematic model of oxygen production process was established. The model was matched with the experiment results to verify the accuracy of the model. Numerical simulation and simulation researches were carried out to determine the relevant intrinsic parameters and external factors on the process of oxygen production and the effect of oxygen production. Performance of oxygen generator at different altitudes with different operating conditions, design parameters and operating parameters were studied to improve the oxygen production efficiency and reduce the manufacturing and operating costs of oxygen generator.
引文
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[27]丁兆阳,韩治洋,石文荣,等.快速变压吸附制氧动态传质系数模拟分析[J].化工学报,2018,69(2):759-768.Ding Z Y,Han Z Y,Shi W R,et al.Analysis of dynamic effective mass transfer coefficients of rapid pressure swing adsorption process for oxygen production[J].CIESC Journal,2018,69(2):759-768.
[28]Li D D,Zhou Y,Shen Y H,et al.Experiment and simulation for separating CO2/N2,by dual-reflux pressure swing adsorption process[J].Chemical Engineering Journal,2016,297:315-324.
[29]周言,沈圆辉,付强,等.真空变压吸附分离CH4/N2/O2实验、模拟与安评[J].化工学报,2017,68(2):723-731.Zhou Y,Shen Y H,Fu Q,et al.Experiment,simulation and safety evaluation of vacuum pressure swing adsorption for CH4/N2/O2separation[J].CIESC Journal,2017,68(2):723-731.
[30]Yang H W,Yin C B,Jiang B,et al.Optimization and analysis of a VPSA process for N2/CH4,separation[J].Separation&Purification Technology,2014,134(1):232-240.
[31]Brandani F,Rouse A,Brandani S,et al.Adsorption kinetics and dynamic behavior of a carbon monolith[J].Adsorption-Journal of the International Adsorption Society,2004,10(2):99-109.
[2]张志刚,姜锐,张月胜,等.浅谈我国变压吸附技术的进展[J].气体分离,2011,2:14-20.Zhang Z G,Jiang R,Zhang Y S,et al.A brief discussion on the progress of pressure swing adsorption technology in China[J].Gas Separation,2011,2:14-20.
[3]杨雄.微型变压吸附制氧机发展概况及存在的问题[J].气体分离,2015,(3):20.Yang X.Development of micro pressure adsorption pressure adsorption oxygen making machine and its existing problems[J].Gas Separation,2015,(3):20.
[4]吴其蒙.节能型小型制氧机[J].气体分离,2003,(3):54-56.Wu Q M.Energy saving small oxygen making machine[J].Gas Separation,2003,(3):54-56.
[5]活力.小型制氧机与家庭氧疗[J].临床医学工程,2001,12:62-63.Huo L.Small oxygen machine and family oxygen therapy[J].Clinical Medical Engineering,2001,12:62-63.
[6]崔红社,刘应书,乐恺,等.小型变压吸附制氧过程的数值模拟[J].深冷技术,2004,(1):20-23.Cui H S,Liu Y S,Yue K,et al.Mathematical simulation of small PSA oxygen process[J].Cryogenic Technology,2004,(1):20-23.
[7]Farooq S,Ruthven D M,Boniface H A.Numerical simulation of a pressure swing adsorption oxygen unit[J].Medical Equipment Journal,1998,44(12):2809-2816.
[8]Teague K G,Edgar T F.Predictive dynamic model of a small pressure swing adsorption air separation unit[J].Industrial&Engineering Chemistry Research,1999,38(10):3761-3775.
[9]Fernandez G F,Kenney C N.Modelling of the pressure swing air separation process[J].Chemical Engineering Science,1983,38(6):827-834.
[10]Farooq S,Ruthven D M.Numerical simulation of a kinetically controlled pressure swing adsorption bulk separation process based on a diffusion model[J].Chemical Engineering Science,1991,46(9):2213-2224.
[11]Silva F A D,Silva J A,Rodrigues A E.A general package for the simulation of cyclic adsorption processes[J].Adsorption-Journal of the International Adsorption Society,1999,5(3):229-244.
[12]Chai S W,Kothare M V,Sircar S.Rapid pressure swing adsorption for reduction of bed size factor of a medical oxygen concentrator[J].Industrial&Engineering Chemistry Research,2011,50(14):8703-8710.
[13]Ruthven D M.Principles of Adsorption&Adsorption Processes[M].New York:Wiley,1984.
[14]Wu C W,Kothare M V,Sircar S.Model analysis of equilibrium adsorption isotherms of pure N2,O2,and their binary mixtures on LiLSX zeolite[J].Industrial&Engineering Chemistry Research,2014,53(31):12428-12434.
[15]Rama R V,Kothare M V,Sircar S.Numerical simulation of rapid pressurization and depressurization of a zeolite column using nitrogen[J].Adsorption-Journal of the International Adsorption Society,2014,20(1):53-60.
[16]Rama R V,Chai S W,Kothare M V,et al.Highlights of nonequilibrium,non-isobaric,non-isothermal desorption of nitrogen from a LiX zeolite column by rapid pressure reduction and rapid purge by oxygen[J].Adsorption-Journal of the International Adsorption Society,2014,20(2/3):477-481.
[17]Rama R V,Sircar S.Comparative performance of an adiabatic and a nonadiabatic PSA process for bulk gas separation-a numerical simulation[J].AIChE Journal,2017,63(9):4066-4078.
[18]Chai S W,Kothare M V,Sircar S.Efficiency of nitrogen desorption from LiX Zeolite by rapid oxygen purge in a pancake adsorber[J].AIChE Journal,2013,59(2):365-368.
[19]Chai S W,Kothare M V,Sircar S.Numerical study of nitrogen desorption by rapid oxygen purge for a medical oxygen concentrator[J].Adsorption-Journal of the International Adsorption Society,2012,18(2):87-102.
[20]Vemula R R,Kothare M V,Sircar S.Performance of a medical oxygen concentrator using rapid pressure swing adsorption process:Effect of feed air pressure[J].AIChE Journal,2016,62(4):1212-1215.
[21]Zhu X Q,Liu Y S,Yang X,et al.Study of a novel rapid vacuum pressure swing adsorption process with intermediate gas pressurization for producing oxygen[J].Adsorption-Journal of the International Adsorption Society,2016,23(1):1-10.
[22]祝显强,刘应书,焦璐璐,等.快速真空变压吸附制氧的排放气充压过程研究[J].北京科技大学学报,2015,37(11):1513-1519.Zhu X Q,Liu Y S,Jiao L L,et al.Study on pressurization with raffinate in a rapid vacuum pressure swing adsorption process for producing oxygen[J].Journal of University of Science and Technology Beijing,2015,37(11):1513-1519.
[23]祝显强,刘应书,杨雄,等.吸附及解吸压力对快速变压吸附床内速度及循环性能的影响[J].北京科技大学学报,2016,38(7):993-1001.Zhu X Q,Liu Y S,Yang X,et al.Effect of adsorption and desorption pressure on the velocity and cycling performance of rapid pressure swing adsorption[J].Journal of University of Science and Technology Beijing,2016,38(7):993-1001.
[24]杨彦钢,丁艳宾,马正飞,等.不同均压方式对PSA和VSA空分制氧过程的影响[J].南京工业大学学报(自科科学版),2012,34(4):79-83.Yang Y G,Ding Y B,Ma Z F,et al.Effects of different pressure equalization methods on PSA and VSA processes for O2production from air[J].Journal of Nanjing University of Technology(Natural Science Edition),2012,34(4):79-83.
[25]周圆圆,韦向攀,张东辉.三塔真空变压吸附富氧工艺过程模拟[J].化工进展,2011,30(S2):263-267.Zhou Y Y,Wei X P,Zhang D H.Simulation of three-bed VPSAoxygen enrichment process[J].Chemical Industry and Engineering Progress,2011,30(S2):263-267.
[26]Kavitha T,Kaliappan S.Equilibrium isotherms of methane onto activated carbons using a static volumetric method[J].J.Environ.Sci.Eng.,2009,51(3):219-222.
[27]丁兆阳,韩治洋,石文荣,等.快速变压吸附制氧动态传质系数模拟分析[J].化工学报,2018,69(2):759-768.Ding Z Y,Han Z Y,Shi W R,et al.Analysis of dynamic effective mass transfer coefficients of rapid pressure swing adsorption process for oxygen production[J].CIESC Journal,2018,69(2):759-768.
[28]Li D D,Zhou Y,Shen Y H,et al.Experiment and simulation for separating CO2/N2,by dual-reflux pressure swing adsorption process[J].Chemical Engineering Journal,2016,297:315-324.
[29]周言,沈圆辉,付强,等.真空变压吸附分离CH4/N2/O2实验、模拟与安评[J].化工学报,2017,68(2):723-731.Zhou Y,Shen Y H,Fu Q,et al.Experiment,simulation and safety evaluation of vacuum pressure swing adsorption for CH4/N2/O2separation[J].CIESC Journal,2017,68(2):723-731.
[30]Yang H W,Yin C B,Jiang B,et al.Optimization and analysis of a VPSA process for N2/CH4,separation[J].Separation&Purification Technology,2014,134(1):232-240.
[31]Brandani F,Rouse A,Brandani S,et al.Adsorption kinetics and dynamic behavior of a carbon monolith[J].Adsorption-Journal of the International Adsorption Society,2004,10(2):99-109.