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Languages : en
Pages : 15
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Book Description
Catalytic gasification of coal to produce H2-, CO-, and CH4-rich mixtures of gases for consumption in molten carbonate fuel cells is currently under development; however, to optimize the fuel cell performance and extend its operating life, it is desired to separate as much of the inert components (i.e., CO2 and N2) and impurities (i.e., H2S and NH3) as possible from the fuel gas before it enters the fuel cell. In addition, the economics of the integrated gasification combined cycle (IGCC) can be improved by separating as much of the hydrogen as possible from the fuel, since hydrogen is a high-value product. Researchers at the Energy & Environmental Research Center and Bend Research, Inc., investigated pressure-driven membranes as a method for accomplishing this gas separation and hot-gas cleanup. These membranes are operated at temperatures as high as 800°C and at pressures up to 300 psig. They have very small pore sizes that separate the undesirable gases by operating in the Knudsen diffusion region of mass transport (30 -50Å) or in the molecular sieving region of mass transport phenomena (
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
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Book Description
Catalytic gasification of coal to produce H2-, CO-, and CH4-rich mixtures of gases for consumption in molten carbonate fuel cells is currently under development; however, to optimize the fuel cell performance and extend its operating life, it is desired to separate as much of the inert components (i.e., CO2 and N2) and impurities (i.e., H2S and NH3) as possible from the fuel gas before it enters the fuel cell. In addition, the economics of the integrated gasification combined cycle (IGCC) can be improved by separating as much of the hydrogen as possible from the fuel, since hydrogen is a high-value product. Researchers at the Energy & Environmental Research Center and Bend Research, Inc., investigated pressure-driven membranes as a method for accomplishing this gas separation and hot-gas cleanup. These membranes are operated at temperatures as high as 800°C and at pressures up to 300 psig. They have very small pore sizes that separate the undesirable gases by operating in the Knudsen diffusion region of mass transport (30 -50Å) or in the molecular sieving region of mass transport phenomena (
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Languages : en
Pages :
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Category : Mollusks / Collection and preservation
Languages : en
Pages : 4
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Category :
Languages : en
Pages : 1
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Category :
Languages : en
Pages : 128
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Author:
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Category :
Languages : en
Pages : 19
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Book Description
Catalytic gasification of coal to produce H2-, CO-, and CH4-rich mixtures of gases for consumption in molten carbonate fuel cells is currently under development; however, to optimize the fuel cell performance and extend its operating life, it is desired to separate as much of the inert components (i.e., CO2 and N2) and impurities (i.e., H2S and NH3) as possible from the fuel gas before it enters the fuel cell. In addition, the economics of the integrated gasification combined cycle (IGCC) can be improved by separating as much of the hydrogen as possible from the fuel, since hydrogen is a high-value product. Researchers at the Energy and Environmental Research Center (EERC) and Bend Research, Inc., investigated pressure-driven membranes as a method for accomplishing this gas separation and hot-gas cleanup. These membranes are operated at temperatures as high as 800 C and at pressures up to 300 psig. They have very small pore sizes that separate the undesirable gases by operating in the Knudsen diffusion region of mass transport or in the molecular sieving region of mass transport phenomena. In addition, H2 separation through a palladium metal membrane proceeds via a solution-diffusion mechanism for atomic hydrogen. This allows the membranes to exhibit extremely high selectivity for hydrogen separation. Specific questions to be answered in this project include: what are the effects of membrane properties (i.e., surface area, pore size, and coating thickness) on permeability and selectivity of the desired gases; what are the effects of operating conditions (i.e., temperature, pressure, and flow rate) on permeability and selectivity; what are the effects of impurities (i.e., small particulate, H2S, HCl, NH3, etc.) on membrane performance?
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Category : Electric light plants
Languages : en
Pages : 52
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Category : Power resources
Languages : en
Pages : 438
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Author: Morgantown Energy Research Center. Hot Gas Cleanup Task Force
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Category : Coal gasification
Languages : en
Pages : 224
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Book Description
Author: Frank G. Kerry
Publisher: CRC Press
ISBN: 1420008269
Category : Science
Languages : en
Pages : 552
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Book Description
Drawing on Frank G. Kerry's more than 60 years of experience as a practicing engineer, the Industrial Gas Handbook: Gas Separation and Purification provides from-the-trenches advice that helps practicing engineers master and advance in the field. It offers detailed discussions and up-to-date approaches to process cycles for cryogenic separation of
