沼气富集用膜装置——现场试验和系统模拟

IF 0.5 4区工程技术 Q4 ENGINEERING, CHEMICAL

Chemical and Process Engineering-Inzynieria Chemiczna I Procesowa Pub Date : 2023-11-06 DOI:10.24425/CPE.2019.126116

A. Chmielewski, A. Urbaniak, J. Palige, O. Roubinek, K. Wawryniuk, A. Dobrowolski

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引用次数: 3

摘要

本文介绍了应用移动膜装置(MMI)进行膜式沼气富集的现场试验结果，进料流量为10 Nm3/h。移动装置配备了四个中空纤维模块和聚酰亚胺型膜，在四个不同的沼气厂进行了测试。其中两人使用的是农业基质。第三个实验在某城市污水处理厂进行污泥发酵，第四个实验从城市垃圾填埋场提取沼气。观察了不同情况下饲料中生物甲烷浓度的差异，并检测到微量化合物。在适当的模块安排下，高选择性聚酰亚胺膜可以在所有情况下提供高甲烷含量的产品。产品上的其他微量化合物，如硫化氢、水蒸气和氧气的含量没有超过作为汽车燃料的沼气标准规定的值。微量的硫化氢和水蒸气更快地渗透到富含二氧化碳的废物流中，这可能导致产物的进一步净化-甲烷被保留在保留物中(H2O > H2S > CO2 > O2 > CH4 > N2)。在所调查的案例中，当N2浓度较低，CH4浓度大于50%时，可以通过两段级联将甲烷浓度提升到90%以上。

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Membrane installation for biogas enrichment – Field tests and system simulation

The paper presents results of the field tests on membrane biogas enrichment performed with the application of mobile membrane installation (MMI) with the feed stream up to 10 Nm3/h. The mobile installation equipped with four hollow fibre modules with polyimide type membranes was tested at four different biogas plants. Two of them were using agricultural substrates. The third one was constructed at a municipal wastewater plant and sludge was fermented in a digester and finally in the fourth case biogas was extracted from municipal waste landfill site. Differences in the concentration of bio-methane in feed in all cases were observed and trace compounds were detected as well. High selectivity polyimide membranes, in proper module arrangements, can provide a product of high methane content in all cases. The content of other trace compounds, such as hydrogen sulphide, water vapour and oxygen on the product did not exceed the values stated by standard for a biogas as a vehicle fuel. The traces of hydrogen sulphide and water vapour penetrated faster to the waste stream enriched in carbon dioxide, which could lead to further purification of the product – methane being hold in the retentate (H2O > H2S > CO2 > O2 > CH4 > N2). In the investigated cases, when concentration of N2 was low and concentration of CH4 higher than 50%, it was possible to upgrade methane to concentration above 90% in a two-stage cascade.

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来源期刊

Chemical and Process Engineering-Inzynieria Chemiczna I Procesowa 工程技术-工程：化工

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The content, aim and scope of the proposals should comply with the main subject of the journal, i.e. they should deal with mathematical modelling and/or experimental investigations on momentum, heat and mass transfer, unit processes and operations, integrated processes, biochemical engineering, statics and kinetics of chemical reactions. The experiments and modelling may cover different scales and processes ranging from the molecular phenomena up to production systems. The journal language is grammatically correct British English. Chemical and Process Engineering publishes: i) full text research articles, ii) invited reviews, iii) letters to the editor and iv) short communications, aiming at important new results and/or applications. Each of the publication form is peer-reviewed by at least two independent referees.