Figure 2 molar fraction in dry base of products during autothermal reforming of methane at different temperatures. Comparison of exergy losses for reformers involved in hydrogen. As a result, this step is co2 neutral to slightly negative, explains bottke. Section 2 is based on a steam methane reforming smr process that produces 719 tonsday of hydrogen. In recent years, hydrogen h 2 has gained much research emphasis as an energy carrier due to its environmental friendliness and wide range of energy applications. Hi, i am trying to simulate steam methane reforming in hysys and read some articles.
Natural gas, acid gas to syngas, low emissions, syngas, steam reforming. Simulation of solid oxide fuel cell anode in aspen hysysa. Experimental study of methane reforming with products of. Parametric studies for key operating conditions like a h 2 permeance, a h 2 o sweep gas flow rate, operating temperature, and a co 2 ch 4 ratio were carried out for a conventional packedbed reactor pbr and a mr using aspen hysys, a. Specialized software aspen hysys version 2006 was used as.
A conventional methane reforming based hydrogen production plant can be represented with the block diagram in fig. For the thermodynamic analysis, a commercial software aspenhysys is used. Mass and energy balances have been established for all cases. Post jobs, find pros, and collaborate commissionfree in our professional marketplace.
Simulation of methane slippage in steam methane reforming mohd. Simulating the production of propylene glycol from water and propylene oxide using hysys duration. The gas produced by the steam reforming reaction first passes through a shift reactor, where carbon monoxide converts to carbon dioxide and hydrogen. For this purpose, methane was used the starting point and building block for the progressive understanding of reforming of complex hydrocarbons. Natural gas is sent to the primary reformer for steam reforming, where superheated steam is fed into the reformer with the methane at. In addition to the maturity of the technology, natural gas reforming is also the most economical among all hydrogen production pathways. Kinetic based simulation of methane steam reforming and water gas shift for hydrogen production using aspen plus article pdf available in chemical engineering transactions 56. Methane steam reforming msr is a wellestablished production method that currently generates 95% of hydrogen in the u. The main reactions associated with the steam methane reforming. Sep 19, 2016 methane steam reforming msr is a wellestablished production method that currently generates 95% of hydrogen in the u. Steam and hydrocarbon enter the reactor as feedstock, and hydrogen and carbon dioxide are generated at the end of the process. An equilibrium or gibbs reactor is appropriate or the smr reactor and one or two additional equilibrium reactors for the shift reactors.
Optimization of a methane autothermal reforming based. Steam methane reforming smr is currently the main hydrogen production process in industry, but it has high emissions of co 2, at almost 7 kg co 2 kg h 2 on average, and is responsible for about 3% of global industrial sector co 2 emissions. Hysys pfr reactors using kinetic rates tutorial using styrene styrene is a monomer used in the production of many plastics. Recovery of co 2 from units of steam methane reforming at.
At higher temperatures, methane reforming by co2 and steam occur, favoring the. For the baseline hfa, we compared the costs and efficiencies of two hydrogengeneration technologies steam methane reforming and autothermal reforming and two hydrogen purification. Objective of the course the purpose of this course is to introduce the use of hysys as a modeling and analysis tool in the unit operations laboratory of the chemical engineering program. Firstly, flowsheet models were developed for both the standalone systems and autothermal reforming process using aspen hysys. The main purpose of this technology is hydrogen production. Furthermore, thermodynamic studies were conducted for the standalone and autothermal reforming processes for temperatures range of 200c and pressure range of bar using gibbs free energy minimization. Pdf kinetic based simulation of methane steam reforming and. Influence of ceo2, zro2, and la2o3 as supports bernay cifuentes 1, manuel f.
Design and control of the dry methane reforming process. Methane steam reforming is a wellestablished process as shown in fig. Videos you watch may be added to the tvs watch history and. Bd energy systems have executed more than 90 steam methane reformer projects which include lumpsum revamp and turnkey epc projects and cover a. Hot methane and steam are fed to the steam methane reformer smr where the reversible reactions r1, r2 and r3 are the main global reactions taking place. Steam methane reforming chemical process simulation. If anyone is working with modelling of steam methane reforming with. H298k 75 kjmol ch4 several parameters have been defined, including dimensions and information on the porous medium. May 01, 2010 product gas from the steam reforming of the methane and naphtha contains equilibrium amounts of hydrogen, carbon dioxide, carbon monoxide and excess steam. Aspen hysys 2006 provides tool to design a steady and dynamics state simulation plant model of hydrogen production from methane. Towards a thermal optimization of a methanesteam reforming.
To simulate hydrogen production in aspen hysys you need to know the reaction involved in the process and how to set them in the software. Hydrogen production by steam reforming of ethanol on rhpt catalysts. There are multiple types of reformers in development but the most common in industry are autothermal reforming atr and steam methane. Steam reforming is endothermicthat is, heat must be supplied to the process for the reaction to proceed. Because hydrogen needs within various sectors of the cpi are at their highest levels in history, and are continuing to grow, an understanding of this method of hydrogen production and purification can be useful. Usually, in oil refineries, flow instability in composition of feedstock can affect the product quality. The catalytic reforming unit by using hysys refinery software was simulated.
The document chemical process simulation and the aspen hysys software, version 7. Onsite hydrogen generation by steam methane reforming. Kinetics, catalysis and mechanism of methane steam reforming. Steam methane reforming hydrogen production hysys tutorial. The dry methane reforming reaction is favored by low pressure, but high pressure synthesis gas is required in the downstream process. So i am wondering how it can be determined whether. There are multiple types of reformers in development but the most common in industry are autothermal reforming atr and steam methane reforming smr. Optimization of a methane autothermal reforming bas ed hydrogen production system with low co 2 emissions wei wu,a and chutima tungpanututh b adepartment of chemical engineering, national cheng kung university, tainan 70101, taiwan, r. Process modelling, thermodynamic analysis and optimization of. Heat and power integration of methane reforming based hydrogen.
In the reforming reaction, natural gas is mixed with steam, heated to over 1,500 degrees fahrenheit, and reacted with nickel catalyst to produce hydrogen h. Here, the results are reported of an investigation of the effect of steamtocarbon ratio sc on co 2 capture criteria from various locations in the. Steam methane reforming simulation hydrogen production hysys tutorial p sims. The pengrobinson equations of state were used to calculate the stream physical and transport properties. In contrast, smr releases about 350 kg of co2 per 1,000 nm3 of syngas. Cost and performance comparison of stationary hydrogen. Steam reforming of methane steam reforming of methaneitso chen october 24, 2010submitted as coursework for physics 240, stanford university, fall 2010. Stabilize steam methane reformer combustion, reduce variability, and gain control of energy costs with emersons steam methane reformer solution, which will enable your operators to respond to changing conditions, keep your equipment from degrading and failing, and help stabilize your reformers performance. Career paths for software engineers and how to navigate it. Hysys has a large electronic software library to model these. Steam methane reforming is the most common and economical way to make hydrogen. Using hysys, you can model and simulate the steam ethane reforming with propylene very easy.
In its simplest form, the steam methane reforming process for pure. Optimization of a methane autothermal reformingbased. In recent years, the need for hydrogen to be used in petrochemical plants and refineries has been growing at a rather fast pace. Carbon monoxide is reacted downstream in two, high and lowtemperature.
Steam methane reforming smr and autothermal reformer atr are two industrial examples of the primary and secondary reformers, respectively. For the thermodynamic analysis, a commercial software aspen hysys is used. Steam methane reforming is the most widely used process for bulk gas production, accounting for 95% of the hydrogen produced in the united states. Technoeconomic analysis tea for co 2 reforming of methane in a membrane reactor mr was conducted by using process simulation and economic analysis. The reaction is strongly endothermic consumes heat. Hydrogen steam methane reformer production overview. May 19, 2011 steam methane reforming simulation hydrogen production hysys tutorial p sims. Hydrogen production by steam reforming chemical engineering. The economical means to produce hydrogen in these industries is steam methane reforming. The steam methane reforming process the steam methane reforming process can be used industrially to produce hydrogen, carbon monoxide and their mixtures.
A methane reformer is a device based on steam reforming, autothermal reforming or partial oxidation and is a type of chemical synthesis which can produce pure hydrogen gas from methane using a catalyst. The process model is developed using the aspen hysys v7. In the reforming process of methane with steam, the dominant. Lemonidou and vasalos experimentally investigated combined co 2 methane reforming with steam methane reforming over 5 wt. Process simulation to obtain a synthesis gas with high concentration of hydrogen 31 the addition of steam in the second reactor serves to the dual purpose of maintaining the reactor temperature and either to ensure that the excess of methane from the natural gas stream is consumed. The catalytic reforming unit by using hysysrefinery software was simulated. Pdf kinetic based simulation of methane steam reforming. Higher reactor pressures reduce compression costs of the synthesis gas. Leaving the shift reactor, the gas contains approximately 75 vol% hydrogen, with carbon dioxide, carbon monoxide and some unconverted methane plus nitrogen if this was present in the feed to the. Hydrogen production from methane autothermal reforming. Aspen hysys is a comprehensive process modelling system used by many oil and gas producers, refineries, and engineering companies around the world to optimize process. Steam methane reforming simulation hydrogen production.
Hydrogen is predominantly generated from the reaction amongst methane and steam. Styrene is made from the dehydrogenation of ethylbenzene. Water enters the furnace, producing steam at a very high temperature. Process modelling, thermodynamic analysis and optimization. Industry is currently making hydrogen from natural gas via steam reforming. The methanesteam reforming process is widely known as a conventional process for producing hydrogen 5. Heat and power integration opportunities in methane. Steam methane reformers remain our core market with our engineers having extensive experience encompassing process design, detailed design, and construction expertise of all major technology licensors. The hfa is composed of a reforming system including the reformer, gas cleanup system, and peripheral components, a hydrogen compressor, storage tanks, and dispenser. Page 1 steam reforming of natural gas at petroleum refining facilities is the predominant means of producing hydrogen in the chemical process industries cpi.
Depending on the quantities of the desired products, the elements of the process can be adapted. Mitigating carbon dioxide impact of industrial steam methane. The pengrobinson fluid package was chosen for use in the hysys simulation because it is ideal for describing hydrocarbon systems such as the steam methane reforming plant, where most components are gases or are nonpolar. However, higher pressures also require a higher reactor temperature to achieve high methane conversion. Heat and power integration opportunities in methane reforming. The results show that, at lower temperatures, methane total oxidation reaction is favored, generating co2. Steam methane reforming process, with the main difference in the presence of pre reforming in the case of hr unit 3. The ratio of hydrogen to carbon monoxide in the resulting synthesis gas is close to unity, which makes it suitable for feeding to the fischertropsch process to produce liquid transportation. The steam methane reforming process can be broken down into five distinct steps. Hysys can help the students perform lengthy calculati. Hysys can help the students perform lengthy calculations in a manner of a few seconds. Optimization of a methane autothermal reformingbas ed hydrogen production system with low co 2 emissions wei wu,a and chutima tungpanututh b adepartment of chemical engineering, national cheng kung university, tainan 70101, taiwan, r.
Hydrogen production by steam reforming of mafiadoc. The autothermal reforming of methane developed using hysys 2006. What is the best aspen plus model for simulation of steam. Mar 30, 2015 methane steam reforming pdf document methane steam reforming. Conventionally, this reaction is carried out at high temperatures 700 c and mild pressures 325 bar, which results in the production of co and h 2 with little co 2 as a byproduct.
The much lower cost of natural gas and the desire to reduce carbon dioxide emissions have stimulated interest in the dry methane reforming process in which these two gases react to produce synthesis gas. In energy, smr is the most widely used process for the generation of hydrogen 2 if playback doesnt begin shortly, try restarting your device. In the reforming process of methane with steam, the dominant reactions are the following two 22. They investigated steam addition to the carbon dioxide methane reforming process to test the increase of the conversion of methane and the decrease of carbon. Assessment of co2 capture options from various points in. New catalysts enable co2neutral olefins production via. It has the fourth highest production rate behind the monomers of ethylene, vinyl chloride and propylene. The results are validated by operating data, which is taken from the esfahan oil refinery catalytic reforming unit. In this study, the methane reforming process has been investigated for the high residence time 3.
The main advantage of the introduction of pre reforming in the most recent unit is supplied by the savings in the combustion of fuel to fired heater of the smr, as also the lower production of vapour for export. The calculated effluent composition of a reformer always needs to be checked against the equilibrium constant equations to ensure that simulations agree with known values. Steam reforming or steam methane reforming is a method for producing syngas hydrogen and carbon monoxide by reaction of hydrocarbons with water. Steam methane reforming smr is a process in which methane from natural gas is heated, with steam and a catalyst, to produce synthetic fuel. In the first step, syngas is made by dry reforming of methane that means co2 is used as a reagent instead of water, as in conventional smr. Steam methane reforming simulation hydrogen production hysys. I use hysys process simulation software in the capstone course in chemical engineering ceng416 that i teach at yale university. On the other hand, the process of combined reforming utilizes both of primary and secondary tools for production of synthesis gas, as it is commonly practiced in ammonia manufacturing. The aspen hysys software used for the simulation conducted here does. In steammethane reforming, methane reacts with steam under 325 bar pressure 1 bar 14. Integration of methane steam reforming and water gas shift. Steam methane reforming simulation hydrogen production hysys tutorial.
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