PDF Publication Title:
Text from PDF Page: 027
-'. beds being regenerated by a proportion o f the purified gas, first heated to 2S0-3S0°C for desorption, and then cooled to increase capacity. These factors mean a large bed size, and high regeneration energy requirements. Bockris and Appleby[S4-p121] state that molecular sieves may be used to give CO2 levels in the exit gas of 1ppm. Piperopoulou and Bloomfield[17] give the CO2 partial pressure in the exit gas from Linde 4A and SA molecular sieves as Imm Hg, which is higher than that found in the atmosphere. They state categorically that due to this, molecular sieves may only be used for fuel side CO2removal. 2.1.3 In-cell electrochemical removal A system for electrochemical regeneration of the electrolyte in the fuel cell itself, has been developed at Pratt and Whitney and is described by Appleby and Foulkes[13- p270]. In this system electrochemical removal of CO2can be achieved, after electrolyte carbonation has occurred. This is done by operating the fuel cell at high current densities for some time. This creates a very low hydroxyl ion concentration at the anode causing the formation of bicarbonate and free carbonic acid which is then decomposed into CO2, The CO2evolved at the anode is flushed out with H2 gas and vented from the system. To increase the operating time prior to regeneration, electrolyte circulation is used. The OR gradient is enhanced by membrane diffusion barriers. The necessary wider electrode gaps and diffusion barriers reduce the performance of the fuel cell. It is unclear whether the overall performance of the cell still degrades over time. The authors state that with each regeneration the cell voltage returns almost to that prior to the test. It is also unclear what the effect is of operating the cell at four times (400mA/cm2) its normal current density for the regeneration period 100 hours. Other methods such as CO2 removal using membrane processes have been proposed for air side CO2 removal. Some of these have been evaluated by McCray et al.[SS]. and Lee et al.[S6] for CO2 removal from breathing atmospheres in space applications. These meet the stringent criteria of minimum weight, volume and energy consumption for that application. They have not been demonstrated for CO2removal to concentrations as low as a few ppm. 2.1 Methods of air side CO2 removal 11PDF Image | CO2 removal from air for alkaline fuel cells operating with liquid H2
PDF Search Title:
CO2 removal from air for alkaline fuel cells operating with liquid H2Original File Name Searched:
35465756.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)