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- W1562725562 abstract "Investigators are studying hydrogen purification by membrane technology as a means to make the coal-to-hydrogen route economically attractive. To allow prediction of membrane performance and to facilitate comparisons between membrane and other technologies (cryogenic distillation, pressure swing adsorption), they developed a mathematical model to describe the permeation process inside a membrane module. The results of this model were compared with available experimental data (separation of CO{sub 2}/O{sub 2}/N{sub 2} mixtures). The model was first used to calculate the gas permeabilities from one set of mixed-gas experiments; the resulting permeabilities were then used to predict the results of the other mixed-gas experiments. The agreement between these predictions and the experimental data was good. However, model predictions using gas permeabilities obtained in pure gas experiments did not agree with the mixed gas experimental data. This disagreement is believed to be due to plasticization of the membrane by contact with CO{sub 2}. These results indicate that data obtained from experiments with mixed-gas feeds are necessary to adequately predict membrane performance when CO{sub 2} is present. The performance of different system configurations, including one and two stages of membrane modules, was examined. The different configurations examined were single module (SM), single module with recyclemore » (SMR), series (SER), and two stage cascade with interstage compression (CAS). In general, SM is the most economical configuration for producing low purity products, SER for medium purity products, and CAS for high purity products. 7 refs., 12 figs., 8 tabs.« less" @default.
- W1562725562 created "2016-06-24" @default.
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- W1562725562 date "1988-10-13" @default.
- W1562725562 modified "2023-09-27" @default.
- W1562725562 title "Mathematical modeling and economic analysis of membrane separation of hydrogen from gasifier synthesis gas" @default.
- W1562725562 doi "https://doi.org/10.2172/5046000" @default.
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