کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6528402 | 1419835 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The removal and capture of CO2 from biogas by vacuum pressure swing process using silica gel
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کلمات کلیدی
Experiments and modelingVPSAPDEsLDFCCDCMSCSSMOFBiogas upgrading - به روز رسانی بیوگازanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of varianceVacuum pressure swing adsorption - جذب نوسان فشار خلاءCO2 capture - جذبCO2Cyclic steady state - حالت پایدار سیسیکResponse surface methodology - روش سطح پاسخRSM - روششناسی سطح پاسخSilica gel - سیلیکا ژلCentral composite design - طراحی مرکب مرکزیCarbon molecular sieve - غربال مولکولی کربنPartial differential equations - معادلات دیفرانسیل جزئیLinear driving force - نیروی محرکه خطیmetal-organic framework - چارچوب آلی _ فلزی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, silica gel was employed as adsorbent in a vacuum pressure swing adsorption process for the removal and capture of CO2 from biogas. Adsorption isotherms of CH4 and CO2 on silica gel were measured experimentally, meanwhile a series of breakthrough experiments were also performed on a fixed bed packed with silica gel. In order to design experiments of VPSA process more reasonable, Central Composite Design Methodology was employed to implement the design of experiments, while Response Surface Methodology was used to analyze experimental results. Experimental results showed that the biogas simulated by 55% CH4 balanced with CO2 could be concentrated to an enriched CH4 stream with CH4 purity higher than 98%, after most of the CO2 had been depleted from feed gas by VPSA process. Moreover, dynamic and transient behaviors, such as temperature profiles and concentration profiles in adsorption bed, were revealed by numerical modeling. A good consistency between experimental data and simulation results was observed. Furthermore, an industrial scale dual pressure swing adsorption unit was designed and evaluated by numerical simulation to achieve the goal of CH4 enrichment and CO2 capture simultaneously. Simulation results indicated that the simulated biogas could be separated to an enriched CH4 stream at 98.01% CH4 purity and 97.31% CH4 recovery, as well as a concentrated CO2 stream at 96.74% CO2 purity and 97.58% CO2 recovery.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of CO2 Utilization - Volume 27, October 2018, Pages 259-271
Journal: Journal of CO2 Utilization - Volume 27, October 2018, Pages 259-271
نویسندگان
Yuanhui Shen, Wenrong Shi, Donghui Zhang, Ping Na, Bo Fu,