The goal for most programs is 40,000 hours of catalyst life. Evaluation of alternate water gas shift configurations for. The reverse water gas shift rwgs process is a candidate technology for water and oxygen production on mars. The pressure drops in the reactor are not negligible and the. This project is in response to a requirement for a system that combines water gas shift technology with separation technology for coal derived synthesis gas. Reactor design is a vital step in the overall design of a process. Improving feal2o3 catalysts for the reverse watergas shift. The justification of such a system would be improved efficiency for the overall hydrogen production. Development of novel water gasshift membrane reactor. A matlab computer program is developed for the numerical solution of a. The key objective of this labscale study was to prove the technical feasibility of the membrane and adsorptionenhanced water gas shift wgs reaction process that employs a carbon molecular sieve cms membrane reactor mr followed by an adsorption reactor ar for precombustion carbon dioxide co2 capture, while demonstrating progress towards achievement of the overall fossil energy. Fe3 o4, were investigated for the reverse watergas shift rwgs reaction at.
Nasa developed a software for equilibrium calculations as early as 1967. The wgs has been traditionally used for adjusting the h2co ratio in a syngas to meet the specifications for various final products. Lowpower, lightweight, ultracompact reverse water gas shift reactor this reactor can be used to produce reagents for methanol, formaldehyde, acetic acid, or ethylene production. Co 2 conversion studies via reverse water gas shift chemical looping were conducted using chemical looping studies in a packed bed reactor connected to an online mass spectrometer mks. Lowpower, lightweight, ultracompact reverse water gas shift. Process intensification with integrated watergasshift. Copper based medium temperature water gas shift catalyst is ideal for use in fuel cell and other distributed hydrogen production applications. This presentation does not contain any proprietary, confidential, or otherwise restricted information. Increasing co 2 conversion to co requires co 2 co separation downstream of the reactor and recycling unreacted co 2 and h 2 back into the reactor. Evaluation of alternate water gas shift configurations for igcc systems august 5, 2009 prepared by. Water gas shift in applications where scrubbed syngas hydrogencarbon monoxide. For special process design, it can be advantageous to combine these two steps to form one isothermal or adiabatic step called medium temperature shift mts. One possible way to shift towards a more sustainable future is to use co 2 as the main carbon source instead of fossil fuels.
High temperature water gas shift reactor posted in student. Full text of modeling and analysis of the reverse water. Scheme of the reactor thermodynamic modeling of watergas shift reaction in supercritical water e. Kinetic modeling of low temperature watergas shift. Copperbased catalysts are commonly used for this reaction due to their high activity and selectivity. Catalyst development for watergas shift 191 not the primary reaction, it must be considered in methanol synthesis, hydrocarbon conversion by reforming, fischer tropsch synthesis, automotive exhaust catalysis, and selective co oxidation for fuel cells. The reverse water gas shift process rwgs for water. Tom meyer 1and robert zubrin 2, 1boulder center for science and policy, p. The watergas shift reaction wgsr describes the reaction of carbon monoxide and water vapor to form carbon dioxide and hydrogen. I am not really sure how to start the sizing of reactor.
Adsorption as a viable and cost effective process for gas separation was chosen for the co 2 co separation. Department of energy laboratory operated by midwest research institute battelle contract no. Catalyst screening and kinetic modeling for co production by high. Is there any books that show the method of doing it step by step. Pdf modeling and simulation of a water gas shift reactor. However, their low thermal stability is problematic for longterm usage. The reverse water gas shift reaction is considered to be a highly attractive catalytic route for co2 recycling in a future sustainable economy. Keywords packed bed reactor, catalyst, water gas shift reaction. Zeolite membrane reactor for watergasshift reaction for hydrogen production jerry y. Kinetics and catalysis of the watergasshift reaction. Thermodynamic modeling of the watergas shift reaction in. Compact reverse watergasshift reactor for extraterrestrial in situ resource utilization. The water gas shift wgs reaction is the upgrading stage in the cycles of hydrogen production by. Water gas shift, hydrogen purification, low temperature shift, high temperature shift flowsheets.
Co2 valorisation via reverse watergas shift reaction using. Reverse water gas shift reaction is endothermic and. Copper based medium temperature water gas shift catalyst. The water gas shift reaction was discovered by italian physicist felice fontana in 1780. I already have the weight of catalyst required and its size. Catalytic reverse water gas shift reaction was conducted in an electric field denoted as erwgs over various catalysts at low temperature as 423 k. Biological watergas shift conversion of carbon monoxide. Amos national renewable energy laboratory 1617 cole boulevard golden, colorado 8040393 nrel is a u.
Watergas shift reaction industrial process britannica. Pilot water gas shiftmembrane device for hydrogen from coal. Hi, i need to design a high temperature water gas shift reactor. This project will develop hydrogenselective membranes for an innovative watergasshift reactor that improves gas separation. Douglas falleiros barbosa lima, fernando ademar zanella, marcelo kaminski lenzi and papa matar ndiaye march 28th 2012. Approaching complete co conversion and total h2 recovery. Chemstations chemcad software package was used to observe the. Gas separation by adsorption in order to increase co.
Co 2 conversion amounts and rates were measured at different temperatures and partial pressures after various reduction procedures. Design of water gas shift converter posted in student. Kinetic, experimental, modeling, and simulation studies of a catalytic high temperature 673. Hydrogenselective membranes for highpressure hydrogen separation. Reverse watergas shift iron catalyst derived from magnetite. New catalyst for the h 2 production by watergas shift reaction processes tesi di dottorato di ricerca in chimica industriale settore chim04 presentata da dr. The design of reactor may be influenced by factors, including process requirements, advantages and disadvantages.
For tpr, 20 mg of sample was loaded into a straight tube quartz reactor with a rough silica bed and. Catalysts free fulltext reverse watergas shift iron catalyst. Simulation and model design of pipeshell reactor for the direct synthesis of dimethyl ether from sy. Catalytic reactors design for industrial applications, catalytic reforming of methane. In the carbon based hydrogen production, water gas shift reaction is the intermediate step used for hydrogen enrichment and co reduction in the synthesis gas. This work proposes the use of one pdbased membrane reactor mr 1, operating in the same temperature range of the high temperature wgs reactor as suitable alternative to the whole traditional reactor tr process. Zeolite membrane reactor for watergasshift reaction for.
The reverse watergas shift reaction rwgs reaction was discovered in the 19th century as a method of producing water from carbon dioxide and hydrogen, with carbon monoxide as a side product. Rwgs uses carbon dioxide and hydrogen as reactants to produce oxygen and carbon monoxide with a copper on alumina catalyst. In the context of sustainable syngas production, the reverse watergas shift rwgs reaction is of high importance, as it converts co 2 to co with the help of process heat and hydrogen. Co2 valorisation via reverse watergas shift reaction using advanced cs doped. This work analyzes the water gas shift reactor design as component of the co cleanup system of the ethanol processor for h 2 production applied to pem fuel cells. Cual spinel as a highly active and stable catalyst for. Lowpower, lightweight, ultracompact reverse water gas. Water gas shift in applications where scrubbed syngas hydrogencarbon monoxide h2co ratio must be increasedadjusted to meet downstream process requirements, the syngas is passed through a multistage, fixedbed reactor containing shift catalysts to convert co and water into additional h2 and carbon dioxide co2 according to the following reaction known as the watergas shift wgs reaction. Pilot water gas shift membrane device for hydrogen from coal tom barton western research institute 511. An ebook reader can be a software application for use on a computer such as microsofts free reader application, or a booksized computer that is used solely as a reading device such as nuvomedias rocket ebook. Here, we introduce an in situ formed surface cual spinel as a highly. Study of the reverse watergas shift and dryreforming reactions conditions in a fixed bed reactor. Mass flow controllers and ktype thermocouples were used to control gas flow rates and temperature, respectively.
Users can purchase an ebook on diskette or cd, but the most popular method of getting an ebook is to purchase a downloadable file of. Modeling and simulation of water gas shift reactor. Study of the reverse watergas shift and dryreforming reactions conditions in a fixed bed reactor at most, to a ring of fou r times the radius of the metallic particles. This work analyzes the watergasshift reactor design as component of the co cleanup system of the ethanol processor for h 2 production applied to pem fuel cells. Study of the reverse water gas shift and dryreforming reactions conditions in a fixed bed reactor at most, to a ring of fou r times the radius of the metallic particles. It is important to ensure that the equipment specified will be capable of achieving the desired yields and selectivity.
Syngas generation and water gas shift reactors for nh3 synthesis 89. Development of novel watergasshift membrane reactor addressing barrier l. Reverse watergas shift in a packed bed dbd reactor. Lin, henk verweij, peter smirniotis and junhang dong. In particular, emissions resulting from the use of hydrogen as fuel contain only water, one of the reasons why that. Morrale, kinetic study of the reverse water gas shift eaction in high temperature, high pressure homogenous. Matlab software is implemented to determine the unknowns in the model. In a batch reactor, the reagents are added together and. Carbon dioxide conversion by reverse watergas shift chemical. There are number of materials capable of catalyzing the watergas shift reaction, which are divided in two main classes that is the ironbased catalysts and the copperbased catalysts. Most hydrogen plants convert co to co2 by hightemperature water gas shift hts followed by lowtemperature water gas shift lts. Mars insitu resource utilization based on the reverse water gas shift experiments and mission applications. Pdf study of the reverse watergas shift and dryreforming. Carbon dioxide conversion to carbon monoxide was studied in an intensified chemical looping reverse watergas shift reaction rwgscl.
Modeling and simulation of watergas shift reactors. A microkinetic and graph theoretic approach ii reverse direction of each step based solely on heats of chemisorption and bond dissociation energies of the species involved. Conduct forward watergas shift using a membrane reactor at favorable conditions accomplishments conducted firstever high temperature and high pressure reverse wgs reaction kinetics study determined catalytic effect of reactor shell material on wgs reaction conducted cfd simulations to determine effect of reactor geometry on. Biological watergas shift conversion of carbon monoxide to hydrogen milestone completion report wade a. Catalytic manganese oxide nanostructures for the reverse. An industrial case, petrochemicals, vivek patel, intechopen, doi. An industrial case douglas falleiros barbosa lima 1, fernando ademar zanella 1, marcelo kaminski lenzi 2 and papa matar ndiaye 2 1refinaria presidente getulio vargas repar petrobras 2universidade federal do parana ufpr brazil 1. The wgs reactor constitutes the element of greater volume of the processor motivating its optimization. Analysis of design variables for watergasshift reactors. Fe3o4, were investigated for the reverse watergas shift rwgs reaction at. Gas shift configurations for igcc systems august 5, 2009 doenetl401080509. The reverse water gas shift process rwgs for water and.
Watergas shift modeling of coal gasification in an. In this work, catalyst screening and reaction kinetic modeling are performed for. Plasmaassisted catalytic reverse water gas shift reactor. Low temperature catalytic reverse water gas shift reaction. Thermo fisher scientific waltham, ma, usa avantage commercial software v5.
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