PDF Publication Title:
Text from PDF Page: 010
Energies 2019, 12, 469 10 of 15 Energies 2019, 12, x FOR PEER REVIEW 10 of 15 Energies T20h1e9, f1a2c, xtoFrObRiPsEdEeRfiRnEeVdIEaWs b = 1 + K2 CH2O. The effectiveness factor with regard to pore d10iffouf s1i5on is [32]: rCO,eff tanhΦgen r tanhΦ r ηCO=,efftanhΦ= gen (13) CO,eff gen η= r= Φ (13) η= r=COΦ gen (13) rCO CO Φgen gen The parameters used for the calculation of the effectiveness factor are listed in Table 1. The parameters used for the calculation of the effectiveness factor are listed in Table 1. The parameters used for the calculation of the effectiveness factor are listed in Table 1. Figure 6 shows that at high CO concentrations the effectiveness factor is close to 1, i.e., pore Figure 6 shows that at high CO concentrations the effectiveness factor is close to 1, i.e., pore diffusion Figure 6 shows that at high CO concentrations the effectiveness factor is close to 1, i.e., pore diffusion diffusion has almost no influence on the effective rate. For lower CO concentrations (<0.5%), important has almost no influence on the effective rate. For lower CO concentrations (< 0.5%), important for has almost no influence on the effective rate. For lower CO concentrations (< 0.5%), important for for selective CO methanation, the factor is less than one and the influence of pore diffusion has to be selective CO methanation, the factor is less than one and the influence of pore diffusion has to be selective CO methanation, the factor is less than one and the influence of pore diffusion has to be considered, e.g., for the design of a technical reactor. considered, e.g., for the design of a technical reactor. considered, e.g., for the design of a technical reactor. Figure 6. Influence of CO concentration on the effectiveness factor with regard to pore diffusion of CO Figure 6. Influence of CO concentration on the effectiveness factor with regard to pore diffusion of Figure 6. Influence of CO concentration on the effectiveness factor with regard to pore diffusion of methanation for a “full” and the egg shell catalyst used in this work (200 ◦C, 55% H , 1 bar). 2 CO methanation for a “full” and the egg shell catalyst used in this work (200 °C, 55% H2, 1 bar). CO methanation for a “full” and the egg shell catalyst used in this work (200 °C, 55% H2, 1 bar). Figure 6 also shows the advantage of the shell catalyst compared to a catalyst with uniform Ru Figure 6 also shows the advantage of the shell catalyst compared to a catalyst with uniform Ru Figure 6 also shows the advantage of the shell catalyst compared to a catalyst with uniform Ru distribution (denoted as “full” catalyst); for the slow CO2 methanation, pore diffusion does not play a distribution (denoted as “full” catalyst); for the slow CO2 methanation, pore diffusion does not play distribution (denoted as “full” catalyst); for the slow CO2 methanation, pore diffusion does not play role for the conditions relevant here. Figure 7 depicts the influence of temperature on the effectiveness a role for the conditions relevant here. Figure 7 depicts the influence of temperature on the a role for the conditions relevant here. Figure 7 depicts the influence of temperature on the factor. At low temperatures, the factor approaches a value of one, but at temperatures above about effectiveness factor. At low temperatures, the factor approaches a value of one, but at temperatures effecti◦veness factor. At low temperatures, the factor approaches a value of one, but at temperatures 200 C, the internal mass transport is not negligible and was therefore considered in the modelling of a above about 200 °C, the internal mass transport is not negligible and was therefore considered in the above about 200 °C, the internal mass transport is not negligible and was therefore considered in the technical methanation reactor (see below). modelling of a technical methanation reactor (see below). modelling of a technical methanation reactor (see below). Fiiggurree77. . IInflfluence off ttemperature on tthe efffecttiiveness ffacttor wiitth regard tto porre diifffussiion off CO Figure 7. Influence of temperature on the effectiveness factor with regard to pore diffusion of CO meetthaanaattiioonnffoorraa““ffuull”l”aannddththeeeegggsshheelllccaatatalylyssttuusseeddininththisiswoorkrk(0(0.5.5%CCOO, ,555%%HH2,,pp=1bar)).. methanation for a “full” and the egg shell catalyst used in this work (0.5% CO, 55% H2, p2 = 1 bar). Hence in the following, the effect of pore diffusion was considered. Figure 8 shows measured and Hence in the following, the effect of pore diffusion was considered. Figure 8 shows measured Hence in the following, the effect of pore diffusion was considered. Figure 8 shows measured modelled values of the conversion of CO (numerical integration of Equation (4)) including influence of and modelled values of the conversion of CO (numerical integration of Equation (4)) including and modelled values of the conversion of CO (numerical integration of Equation (4)) including porediffusion)fortwodifferentfeedgaseswith1.41and0.5vol%COand55vol%H inN.Forthe influence of pore diffusion) for two different feed gases with 1.41 and 0.5 vol% CO an2d 55 v2ol% H2 in influence of pore diffusion) for two different feed gases with 1.41 and 0.5 vol% CO and 55 vol% H2 in given temperatures of below 200 ◦C, the conversion and reaction rates are almost unaffected by pore N2. For the given temperatures of below 200 °C, the conversion and reaction rates are almost N2. For the given temperatures of below 200 °C, the conversion and reaction rates are almost diffusion (see also Figure 7), and therefore not really reflected by the experimental data. unaffected by pore diffusion (see also Figure 7), and therefore not really reflected by the experimental unaffected by pore diffusion (see also Figure 7), and therefore not really reflected by the experimental data. data.PDF Image | Selective Methanation of CO over a Ru-y-AI2O3 Catalyst in CO2 H2
PDF Search Title:
Selective Methanation of CO over a Ru-y-AI2O3 Catalyst in CO2 H2Original File Name Searched:
energies-12-00469.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)