An industrial case, petrochemicals, vivek patel, intechopen, doi. 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. 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. 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. Design of water gas shift converter posted in student. Pilot water gas shiftmembrane device for hydrogen from coal.
However, their low thermal stability is problematic for longterm usage. Catalysts free fulltext reverse watergas shift iron catalyst. Scheme of the reactor thermodynamic modeling of watergas shift reaction in supercritical water e. Process intensification with integrated watergasshift. Evaluation of alternate water gas shift configurations for. The wgs has been traditionally used for adjusting the h2co ratio in a syngas to meet the specifications for various final products. In a batch reactor, the reagents are added together and. Water gas shift, hydrogen purification, low temperature shift, high temperature shift flowsheets. Nasa developed a software for equilibrium calculations as early as 1967.
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. The wgs reactor constitutes the element of greater volume of the processor motivating its optimization. Kinetics and catalysis of the watergasshift reaction. Morrale, kinetic study of the reverse water gas shift eaction in high temperature, high pressure homogenous.
Cual spinel as a highly active and stable catalyst for. Fe3o4, were investigated for the reverse watergas shift rwgs reaction at. Lowpower, lightweight, ultracompact reverse water gas shift reactor this reactor can be used to produce reagents for methanol, formaldehyde, acetic acid, or ethylene production. Carbon dioxide conversion by reverse watergas shift chemical. Department of energy laboratory operated by midwest research institute battelle contract no. Full text of modeling and analysis of the reverse water. The carbon dioxide is removed by dissolving it in water at a pressure of about ten atmospheres. 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. Adsorption as a viable and cost effective process for gas separation was chosen for the co 2 co separation. Simulation and model design of pipeshell reactor for the direct synthesis of dimethyl ether from sy.
Analysis of design variables for watergasshift reactors. Catalytic reverse water gas shift reaction was conducted in an electric field denoted as erwgs over various catalysts at low temperature as 423 k. Watergas shift modeling of coal gasification in an. In this work, catalyst screening and reaction kinetic modeling are performed for. Systems engineering and design of a mars polar research base with a human crew. Rwgs uses carbon dioxide and hydrogen as reactants to produce oxygen and carbon monoxide with a copper on alumina catalyst. Approaching complete co conversion and total h2 recovery. Biological watergas shift conversion of carbon monoxide to hydrogen milestone completion report wade a. The goal for most programs is 40,000 hours of catalyst life.
Matlab software is implemented to determine the unknowns in the model. Reactor design is a vital step in the overall design of a process. Tom meyer 1and robert zubrin 2, 1boulder center for science and policy, p. 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. 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. Reverse water gas shift reaction is endothermic and. Mars insitu resource utilization based on the reverse water gas shift experiments and mission applications. Pdf study of the reverse watergas shift and dryreforming. Co2 valorisation via reverse watergas shift reaction using. 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. Copper based medium temperature water gas shift catalyst is ideal for use in fuel cell and other distributed hydrogen production applications. Copperbased catalysts are commonly used for this reaction due to their high activity and selectivity. The funders had no role in the design of the study. Co 2 conversion amounts and rates were measured at different temperatures and partial pressures after various reduction procedures.
In particular, emissions resulting from the use of hydrogen as fuel contain only water, one of the reasons why that. Modeling and simulation of water gas shift reactor. This presentation does not contain any proprietary, confidential, or otherwise restricted information. Kinetic, experimental, modeling, and simulation studies of a catalytic high temperature 673. Development of novel watergasshift membrane reactor addressing barrier l. The reverse water gas shift process rwgs for water and. Pilot water gas shift membrane device for hydrogen from coal tom barton western research institute 511. Plasmaassisted catalytic reverse water gas shift reactor. 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. I am not really sure how to start the sizing of reactor. The reverse water gas shift reaction is considered to be a highly attractive catalytic route for co2 recycling in a future sustainable economy. Pdf modeling and simulation of a water gas shift reactor. It is important to ensure that the equipment specified will be capable of achieving the desired yields and selectivity.
The watergas shift reaction wgsr describes the reaction of carbon monoxide and water vapor to form carbon dioxide and hydrogen. 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. 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. Mass flow controllers and ktype thermocouples were used to control gas flow rates and temperature, respectively. Catalytic manganese oxide nanostructures for the reverse. Plasmaassisted catalytic reverse water gas shift reactor marshall space flight center, alabama for improving co 2 conversions for a lowtemperature co 2 methanation process, a mechanism of using reverse water gas shift rwgs reaction as an intermediate step to generate the more reactive co species for the methanation process was developed. 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. Lin, henk verweij, peter smirniotis and junhang dong. For tpr, 20 mg of sample was loaded into a straight tube quartz reactor with a rough silica bed and.
Is there any books that show the method of doing it step by step. Gas shift configurations for igcc systems august 5, 2009 doenetl401080509. Thermo fisher scientific waltham, ma, usa avantage commercial software v5. Modeling and simulation of watergas shift reactors.
This project will develop hydrogenselective membranes for an innovative watergasshift reactor that improves gas separation. Zeolite membrane reactor for watergasshift reaction for. Here, we introduce an in situ formed surface cual spinel as a highly. Kinetic modeling of low temperature watergas shift. The reverse water gas shift rwgs process is a candidate technology for water and oxygen production on mars. Reverse watergas shift in a packed bed dbd reactor. Amos national renewable energy laboratory 1617 cole boulevard golden, colorado 8040393 nrel is a u. 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.
Hydrogenselective membranes for highpressure hydrogen separation. Most hydrogen plants convert co to co2 by hightemperature water gas shift hts followed by lowtemperature water gas shift lts. Thermodynamic modeling of the watergas shift reaction in. The water gas shift reaction was discovered by italian physicist felice fontana in 1780. The water gas shift wgs reaction is the upgrading stage in the cycles of hydrogen production by. 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. Development of novel water gasshift membrane reactor.
Fe3 o4, were investigated for the reverse watergas shift rwgs reaction at. Biological watergas shift conversion of carbon monoxide. The pressure drops in the reactor are not negligible and the. Catalytic reactors design for industrial applications, catalytic reforming of methane. Gas separation by adsorption in order to increase co. 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. Catalyst screening and kinetic modeling for co production by high. 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. Carbon dioxide conversion to carbon monoxide was studied in an intensified chemical looping reverse watergas shift reaction rwgscl. Copper based medium temperature water gas shift catalyst.
Co2 valorisation via reverse watergas shift reaction using advanced cs doped. Improving feal2o3 catalysts for the reverse watergas shift. Lowpower, lightweight, ultracompact reverse water gas. Compact reverse watergasshift reactor for extraterrestrial in situ resource utilization.
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. The reverse water gas shift process rwgs for water. 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. Syngas generation and water gas shift reactors for nh3 synthesis 89. 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. Douglas falleiros barbosa lima, fernando ademar zanella, marcelo kaminski lenzi and papa matar ndiaye march 28th 2012. Hi, i need to design a high temperature water gas shift reactor. Watergas shift reaction industrial process britannica. Low temperature catalytic reverse water gas shift reaction. Zeolite membrane reactor for watergasshift reaction for hydrogen production jerry y. The justification of such a system would be improved efficiency for the overall hydrogen production. Keywords packed bed reactor, catalyst, water gas shift reaction. Reverse watergas shift iron catalyst derived from magnetite. Study of the reverse watergas shift and dryreforming reactions conditions in a fixed bed reactor.
Water gas shift in applications where scrubbed syngas hydrogencarbon monoxide. Chemstations chemcad software package was used to observe the. 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. A matlab computer program is developed for the numerical solution of a. 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. High temperature water gas shift reactor posted in student. 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. I already have the weight of catalyst required and its size.