真空变压吸附分离氮气甲烷的模拟与控制

doi:10.11949/j.issn.0438-1157.20171015

化工学报 ›› 2018, Vol. 69 ›› Issue (2): 750-758.DOI: 10.11949/j.issn.0438-1157.20171015

真空变压吸附分离氮气甲烷的模拟与控制

韩治洋, 丁兆阳, 韩旸湲, 沈圆辉, 张东辉

化学工程联合国家重点实验室, 天津大学化工学院, 天津 300072

收稿日期:2017-07-31 修回日期:2017-09-18 出版日期:2018-02-05 发布日期:2018-02-05
通讯作者: 张东辉
基金资助:
化学工程联合国家重点实验室开放课题资助项目（SKL-ChE-16B05）。

Simulation and control of vacuum pressure swing adsorption for N₂/CH₄ separation

HAN Zhiyang, DING Zhaoyang, HAN Yangyuan, SHEN Yuanhui, ZHANG Donghui

State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2017-07-31 Revised:2017-09-18 Online:2018-02-05 Published:2018-02-05
Supported by:
supported by the State Key Laboratory of Chemical Engineering (SKL-ChE-16B05).

摘要/Abstract

摘要：

采用实验室自制的活性炭为吸附剂，进行了真空变压吸附（VPSA）分离氮气/甲烷的实验、模拟和控制研究。建立了一套双塔VPSA实验装置，并将其数学模型建立在gPROMS软件中，通过改变进料气流量做多组对比实验，通过模拟数据和实验数据的对比，验证了数学模型的准确性。通过双塔VPSA的模拟调试，可以将甲烷的纯度由30%提升到80%，同时保证83%的回收率。随后，针对实际生产中不可避免的状态干扰因素，选取了3种常见的扰动状况，以产品气纯度快速回归至80%为控制目标，根据本文所采用的VPSA系统设计了PID控制器，进行了模拟和控制的研究。研究结果表明，引入PID控制器可以使纯度受到扰动影响时较快速地回归至合格纯度，同时保证装置较为稳定的运行。

关键词: 氮气/甲烷, VPSA, 模拟, 活性炭, 控制

Abstract:

The research conducted the experiments for N₂/CH₄ separation using the vacuum pressure swing adsorption (VPSA) process based on the two-bed experimental set-up and the laboratory-made activated carbon as adsorbent. The mathematical models were built in gPROMS and the accuracy of models was verified by comparison of simulations and experiments. The simulation results showed that the two-bed VPSA process can obtain a rich-methane product with 80% methane purity and 83% methane recovery. But in the actual operation, disturbances of system state are inevitable and influenced the technical indexes such as purity. The studies of disturbance and control are performed and the controller is designed for the VPSA system. The results demonstrate by introducing the controller, the purity of product can be promised under various disturbances.

Key words: nitrogen/methane, VPSA, simulation, activated carbon, control

中图分类号:

TQ028.1

韩治洋, 丁兆阳, 韩旸湲, 沈圆辉, 张东辉. 真空变压吸附分离氮气甲烷的模拟与控制[J]. 化工学报, 2018, 69(2): 750-758.

HAN Zhiyang, DING Zhaoyang, HAN Yangyuan, SHEN Yuanhui, ZHANG Donghui. Simulation and control of vacuum pressure swing adsorption for N₂/CH₄ separation[J]. CIESC Journal, 2018, 69(2): 750-758.

参考文献 26

[1]	MOORE T A. Coalbed methane:a review[J]. International Journal of Coal Geology, 2012, 101(6):36-81.
[2]	MENG Y J, TANG D Z, XU H, et al. Coalbed methane produced water in China:status and environmental issues[J]. Environmental Science & Pollution Research International, 2014, 21(11):6964.
[3]	BRANDT A R, HEATH G A, KORT E A, et al. Energy and environment. Methane leaks from North American natural gas systems[J]. Science, 2014, 343(6172):733-735.
[4]	HAPPEL J, HNATOW M A, MEYER H. The study of separation of nitrogen from methane by hydrate formation using a novel apparatus[J]. Annals of the New York Academy of Sciences, 2010, 715(1):412-424.
[5]	AND A J, YANG R T, AND D C, et al. Tailored clinoptilolites for nitrogen/methane separation[J]. Chemical Engineering Science, 2004, 59(12):2407-2417.
[6]	KARACAN C Ö, RUIZ F A, COTE M, et al. Coal mine methane:a review of capture and utilization practices with benefits to mining safety and to greenhouse gas reduction[J]. International Journal of Coal Geology, 2011, 86(2):121-156.
[7]	吕秋楠, 李小森, 徐纯刚, 等. 低浓度煤层气分离提纯的研究进展[J]. 化工进展, 2013, 32(6):1267-1272. LÜ Q N, LI X S, XU C G, et al. Progress of purification technology for low concentration coal-bed methane[J]. Chemical Industry & Engineering Progress, 2013, 32(6):1267-1272.
[8]	GAO T, LIN W S, LIU W, et al. CBM liquefaction process integrated with distillation separation of nitrogen[J]. Journal of Chemical Engineering of Japan, 2011, 44(8):555-560.
[9]	GARCIA F, CERVIK J. Review of membrane technology for methane recovery from mining operations[R]. Bureau of Mines, Pittsburgh, PA (USA). Pittsburgh Research Center, 1988:PB-88-240510/XAB; BM-IC-9174.
[10]	RUTHEVN D M, FAROOQ S. Air separation by pressure swing adsorption[J]. Gas Separation & Purification, 1986, 4(3):141-148.
[11]	SIRCAR S, GOLDEN T C. Purification of hydrogen by pressure swing adsorption[J]. Fuel & Energy Abstracts, 2000, 43(5):667-687.
[12]	席芳, 林文胜, 顾安忠, 等. 煤层气在活性炭和碳分子筛上变压吸附分离[J]. 化工学报, 2010, 61(S2):54-57. XI F, LIN W S, GU A Z, et al. Adsorption separation of coalbed methane on activated carbon and carbon molecular sieve[J]. CIESC Journal, 2010, 61(S2):54-57.
[13]	刘应书, 杨雄, 李永玲, 等. 真空变压吸附分离含氧煤层气的工艺参数实验研究[J]. 现代化工, 2011, 31(1):64-67. LIU Y S, YANG X, LI Y L, et al. Experiment study on process parameters of coal-bed gas separation by vacuum pressure swing adsorption[J]. Modern Chemical Industry, 2011, 31(1):64-67.
[14]	周圆圆, 杨华伟, 张东辉. 甲烷/氮气变压吸附分离的实验与模拟[J]. 天然气化工, 2011, 36(5):21-27. ZHOU Y Y, YANG H W, ZHANG D H. Simulation and experiment for the pressure swing adsorption separation of methane and nitrogen[J]. Natural Gas Chemical Industry, 2011, 36(5):21-27.
[15]	杨雄, 刘应书, 李永玲, 等. 基于活性炭的真空变压吸附提浓煤层气甲烷的实验研究[J]. 煤炭学报, 2010, 35(6):987-991. YANG X, LIU Y S, LI Y L, et al. The experimental study on upgrade of coal mine gas by vacuum pressure swing adsorption with activated carbon[J]. Journal of China Coal Society, 2010, 35(6):987-991.
[16]	LIU C M, ZHOU Y P, SUN Y, et al. Enrichment of coal-bed methane by PSA complemented with CO2 displacement[J]. AIChE Journal, 2011, 57(3):645-654.
[17]	辜敏, 鲜学福, 张代均, 等. 变压吸附技术分离CH4/N2气体混合物[J]. 煤炭学报, 2002, 27(2):197-200. GU M, XIAN X F, ZHANG D J, et al. Separation of CH4/N2 gas mixture by pressure swing adsorption processes[J]. Journal of China Coal Society, 2002, 27(2):197-200.
[18]	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.
[19]	韦向攀. 吸附剂改性实验与富氧工艺过程模拟[D]. 天津:天津大学, 2010. WEI X P. Adsorbent modification and process simulation in oxygen adsorption enrichment[D]. Tianjin:Tianjin University, 2010.
[20]	曹永正, 刘应书. 两塔变压吸附循环中两步均压的研究[J]. 湖南师范大学自然科学学报, 2016, (2):53-58. CAO Y Z, LIU Y S. The study of the two-stage pressure equalization step in the two-bed PSA cycle[J]. Journal of Natural Science of Hunan Normal University, 2016, (2):53-58.
[21]	AHN S, YOU Y W, LEE D G, et al. Layered two-and four-bed PSA processes for H2 recovery from coal gas[J]. Chemical Engineering Science, 2012, 68(1):413-423.
[22]	FLORES R M. Coal bed methane:from hazard to resource[J]. International Journal of Coal Geology, 1998, 35(1/2/3/4):3-26.
[23]	FAROOQ S, RUTHEVN D M, BONIFACE H A. Numerical simulation of a pressure swing adsorption oxygen unit[J]. Medical Equipment Journal, 1998, 44(12):2809-2816.
[24]	LOPES F V S, GRANDE C A, RODRIGUES A E. Activated carbon for hydrogen purification by pressure swing adsorption:multicomponent breakthrough curves and PSA performance[J]. Chemical Engineering Science, 2011, 66(3):303-317.
[25]	KNAEBEL K S, HILL F B. Pressure swing adsorption:development of an equilibrium theory for gas separations[J]. Chemical Engineering Science, 1985, 40(12):2351-2360.
[26]	YIN C B, SUN W N, YANG H W, et al. Optimization of three-bed VPSA system for biogas upgrading[J]. Chemical Engineering Science, 2015, 135:100-108.

真空变压吸附分离氮气甲烷的模拟与控制

Simulation and control of vacuum pressure swing adsorption for N₂/CH₄ separation

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真空变压吸附分离氮气甲烷的模拟与控制

Simulation and control of vacuum pressure swing adsorption for N2/CH4 separation

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Simulation and control of vacuum pressure swing adsorption for N₂/CH₄ separation