生物沼气加压水洗过程厂级动态控制设计与模拟
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摘要
针对生物质沼气加压水洗提纯净化处理过程,开展厂级动态协同控制方案设计与模拟实验研究。根据生物沼气加压水洗中试装置工艺需求,采用Aspen Plus软件建立其稳态流程模拟系统,并通过对不同工艺操作条件进行稳态模拟获取最佳稳态操作工况。根据工艺要求合理设计厂级动态控制方案,保证沼气提纯率大于97%。通过Aspen Dynamic模块建立其动态流程模拟系统,分别引入沼气进气流量与成分扰动测试系统性能,模拟测试结果和实验运行结果表明,该控制系统具有良好的动态响应性能,而且在多种扰动下CO2的脱除率都大于99.8%,有效抑制各种扰动。
Dynamic control design and simulation was used to study biogas pressurized water scrubbing processes. A steady state simulation system was established using Aspen Plus software following the requirements of these processes, and the operating parameters under steady state and different operation conditions was optimized. Dynamic control schemes were also designed to ensure the biogas purification efficiency over 97%. A dynamic process simulation system was established with Aspen Dynamic model, and system performance was tested by introducing biogas intake flow disturbance and composition disturbance. Both simulation and experimental results show that the system has good dynamic response. Meanwhile, the system can effectively undertake various disturbances and ensure CO2 removal rate over 99.8%.
Dynamic control design and simulation was used to study biogas pressurized water scrubbing processes. A steady state simulation system was established using Aspen Plus software following the requirements of these processes, and the operating parameters under steady state and different operation conditions was optimized. Dynamic control schemes were also designed to ensure the biogas purification efficiency over 97%. A dynamic process simulation system was established with Aspen Dynamic model, and system performance was tested by introducing biogas intake flow disturbance and composition disturbance. Both simulation and experimental results show that the system has good dynamic response. Meanwhile, the system can effectively undertake various disturbances and ensure CO2 removal rate over 99.8%.
引文
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[3]ZHEN Feng(甄锋),LI Dong(李东),SUN Yong-ming(孙永明),et al.High value application and purification technology of biogas(沼气高值化利用与净化提纯技术)[J].Environmental Science&Technology(环境科学与技术),2012,35(11):103-108.
[4]JIN Xiao(金潇),MA Ze-yu(马泽宇),XU Qi-yong(徐期勇).Removal technologies of carbon dioxide in landfill gas and its research advances(填埋气中二氧化碳净化技术及研究进展)[J].Renewable Energy Resources(环境科学与技术),2013,31(1):87-92.
[5]Alma T,Mayara L S,Saúl B,et al.Photosynthetic biogas upgrading to bio-methane:boosting nutrient recovery via biomass productivity control[J].Algal Research,2016,17:46-52.
[6]Sun Q,Li H L,Yan J Y,et al.Selection of appropriate biogas upgrading technology:a review of biogas cleaning,upgrading and utilization[J].Renewable and Sustainable Energy Reviews,2015,51:521-532.
[7]Carios A G,Alírio E R.Biogas to fuel by vacuum pressure swing adsorption I.Behavior of equilibrium and kinetic-based adsorbents[J].Industrial Engineering Chemistry Research,2007,46(13):4595-4605.
[8]LIU Xiao-rui(刘晓瑞),WANG Yan-ping(汪艳萍),FENG Lei(冯磊),et al.Application of Aspen Plus software in simulating methane decarbonization for vehicle gas(Aspen Plus软件在模拟沼气脱碳制取车用燃气中的应用)[J].Journal of Inner Mongolia University of Technology(内蒙古工业大学学报),2015,34(2):5-10.
[9]Cozma P,Wukovits W,M?m?lig?I,et al.Modeling and simulation of high pressure water scrubbing technology applied for biogas upgrading[J].Clean Technologies&Environmental Policy,2015,17(2):373-391.
[10]G?tz M,Koppel W,Reimert R,et al.Potential to optimize scrubbers for biogas cleaning part 1-physical scrubbers[J].ChemieIngenieurTechnik,2011,83(6):858-866.
[11]Slantela J,Rasi S,Lehtinen J.Landfill gas upgrading with pilot-scale water scrubber:performance assessment with absorption water recycling[J].Applied Energy,2012,92(4):307-314.
[12]Xiao Y,Yuan H R,Pang Y Z.CO2 removal from biogas by water washing system[J].Chinese Journal of Chemical Engineering,2014,22(8):950-953.
[13]HAN De-gang(韩德刚),GAO Zhi-di(高执棣),GAO Pan-liang(高盘良).Physical Chemistry(物理化学)[M].Beijing(北京):Higher Education Press(高等教育出版社),2001.