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. Towards a thermal optimization of a methanesteam reforming reactor. Steam methane reforming chemical process simulation. The dry methane reforming reaction is favored by low pressure, but high pressure synthesis gas is required in the downstream process. Section 2 is based on a steam methane reforming smr process that produces 719 tonsday of hydrogen. Cost and performance comparison of stationary hydrogen. 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 catalytic reforming unit by using hysys refinery software was simulated. Process modelling, thermodynamic analysis and optimization of. Steam reforming of methane steam reforming of methaneitso chen october 24, 2010submitted as coursework for physics 240, stanford university, fall 2010. A conventional methane reforming based hydrogen production plant can be represented with the block diagram in fig. Heat and power integration opportunities in methane.
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. Hydrogen production by steam reforming chemical engineering. Usually, in oil refineries, flow instability in composition of feedstock can affect the product quality. The hfa is composed of a reforming system including the reformer, gas cleanup system, and peripheral components, a hydrogen compressor, storage tanks, and dispenser. 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. Towards a thermal optimization of a methanesteam reforming. Industry is currently making hydrogen from natural gas via steam reforming. The reaction is strongly endothermic consumes heat. For the thermodynamic analysis, a commercial software aspenhysys is used. Heat and power integration of methane reforming based hydrogen. Figure 2 molar fraction in dry base of products during autothermal reforming of methane at different temperatures.
Simulation of ammonia production using hysys software. Influence of ceo2, zro2, and la2o3 as supports bernay cifuentes 1, manuel f. 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. 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. Recovery of co 2 from units of steam methane reforming at. The catalytic reforming unit by using hysysrefinery software was simulated. The autothermal reforming of methane developed using hysys 2006. Sep 19, 2016 methane steam reforming msr is a wellestablished production method that currently generates 95% of hydrogen in the u.
I use hysys process simulation software in the capstone course in chemical engineering ceng416 that i teach at yale university. H298k 75 kjmol ch4 several parameters have been defined, including dimensions and information on the porous medium. So i am wondering how it can be determined whether. 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. Firstly, flowsheet models were developed for both the standalone systems and autothermal reforming process using aspen hysys. An equilibrium or gibbs reactor is appropriate or the smr reactor and one or two additional equilibrium reactors for the shift reactors. There are multiple types of reformers in development but the most common in industry are autothermal reforming atr and steam methane reforming smr.
Hysys can help the students perform lengthy calculati. 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. 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. Optimization of a methane autothermal reformingbased. Post jobs, find pros, and collaborate commissionfree in our professional marketplace. In the reforming process of methane with steam, the dominant reactions are the following two 22. 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.
Assessment of co2 capture options from various points in. Methane steam reforming msr is a wellestablished production method that currently generates 95% of hydrogen in the u. 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. 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 reforming is endothermicthat is, heat must be supplied to the process for the reaction to proceed. The methanesteam reforming process is widely known as a conventional process for producing hydrogen 5. If anyone is working with modelling of steam methane reforming with. Styrene is made from the dehydrogenation of ethylbenzene.
The aspen hysys software used for the simulation conducted here does. The results are validated by operating data, which is taken from the esfahan oil refinery catalytic reforming unit. In addition to the maturity of the technology, natural gas reforming is also the most economical among all hydrogen production pathways. The economical means to produce hydrogen in these industries is steam methane reforming. Steam methane reforming hydrogen production hysys tutorial. Steam methane reforming is the most common and economical way to make hydrogen. The steam methane reforming process can be broken down into five distinct steps. 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.
Page 1 steam reforming of natural gas at petroleum refining facilities is the predominant means of producing hydrogen in the chemical process industries cpi. 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. What is the best aspen plus model for simulation of steam. Depending on the quantities of the desired products, the elements of the process can be adapted. For this purpose, methane was used the starting point and building block for the progressive understanding of reforming of complex hydrocarbons. 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.
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 process has been simulated using aspentechs process engineering software hysys version 3. Hi, i am trying to simulate steam methane reforming in hysys and read some articles. 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. The pengrobinson equations of state were used to calculate the stream physical and transport properties. Hydrogen steam methane reformer production overview.
In its simplest form, the steam methane reforming process for pure. Steam methane reforming simulation hydrogen production hysys. It has the fourth highest production rate behind the monomers of ethylene, vinyl chloride and propylene. Steam methane reforming simulation hydrogen production hysys tutorial. Steam methane reforming simulation hydrogen production hysys tutorial p sims. The results show that, at lower temperatures, methane total oxidation reaction is favored, generating co2. 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 main reactions associated with the steam methane reforming. Hysys can help the students perform lengthy calculations in a manner of a few seconds. Hydrogen production from methane autothermal reforming. Integration of methane steam reforming and water gas shift. Kinetics, catalysis and mechanism of methane steam reforming. Steam and hydrocarbon enter the reactor as feedstock, and hydrogen and carbon dioxide are generated at the end of the process. Simulating the production of propylene glycol from water and propylene oxide using hysys duration. 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.
The document chemical process simulation and the aspen hysys software, version 7. Steam methane reforming simulation hydrogen production. In energy, smr is the most widely used process for the generation of hydrogen 2 if playback doesnt begin shortly, try restarting your device. Steam methane reforming smr is a process in which methane from natural gas is heated, with steam and a catalyst, to produce synthetic fuel. Videos you watch may be added to the tvs watch history and. In the reforming process of methane with steam, the dominant. 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. Natural gas is sent to the primary reformer for steam reforming, where superheated steam is fed into the reformer with the methane at.
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. 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. The steam methane reforming process the steam methane reforming process can be used industrially to produce hydrogen, carbon monoxide and their mixtures. Technoeconomic analysis tea for co 2 reforming of methane in a membrane reactor mr was conducted by using process simulation and economic analysis. 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. Water enters the furnace, producing steam at a very high temperature. Simulation of solid oxide fuel cell anode in aspen hysysa. The main purpose of this technology is hydrogen production. At higher temperatures, methane reforming by co2 and steam occur, favoring the. Hysys has a large electronic software library to model these. Career paths for software engineers and how to navigate it. Mar 30, 2015 methane steam reforming pdf document methane steam reforming. However, higher pressures also require a higher reactor temperature to achieve high methane conversion. Hysys pfr reactors using kinetic rates tutorial using styrene styrene is a monomer used in the production of many plastics.
Optimization of a methane autothermal reforming based. New catalysts enable co2neutral olefins production via. Heat and power integration opportunities in methane reforming. Steam reforming or steam methane reforming is a method for producing syngas hydrogen and carbon monoxide by reaction of hydrocarbons with water.
Simulation of methane slippage in steam methane reforming mohd. Using hysys, you can model and simulate the steam ethane reforming with propylene very easy. In this study, the methane reforming process has been investigated for the high residence time 3. Bd energy systems have executed more than 90 steam methane reformer projects which include lumpsum revamp and turnkey epc projects and cover a. As a result, this step is co2 neutral to slightly negative, explains bottke. 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. 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. Onsite hydrogen generation by steam methane reforming. Steam methane reforming smr and autothermal reformer atr are two industrial examples of the primary and secondary reformers, respectively. Mitigating carbon dioxide impact of industrial steam methane.
Natural gas, acid gas to syngas, low emissions, syngas, steam 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. Pdf kinetic based simulation of methane steam reforming. Carbon monoxide is reacted downstream in two, high and lowtemperature. The gas produced by the steam reforming reaction first passes through a shift reactor, where carbon monoxide converts to carbon dioxide and hydrogen. There are multiple types of reformers in development but the most common in industry are autothermal reforming atr and steam methane. For the baseline hfa, we compared the costs and efficiencies of two hydrogengeneration technologies steam methane reforming and autothermal reforming and two hydrogen purification. For the thermodynamic analysis, a commercial software aspen hysys is used.
Design and control of the dry methane reforming process. Lemonidou and vasalos experimentally investigated combined co 2 methane reforming with steam methane reforming over 5 wt. May 19, 2011 steam methane reforming simulation hydrogen production hysys tutorial p sims. Steam methane reforming is the most widely used process for bulk gas production, accounting for 95% of the hydrogen produced in the united states. Higher reactor pressures reduce compression costs of the synthesis gas. Mass and energy balances have been established for all cases. Comparison of exergy losses for reformers involved in 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. Process modelling, thermodynamic analysis and optimization. Pdf kinetic based simulation of methane steam reforming and. In recent years, the need for hydrogen to be used in petrochemical plants and refineries has been growing at a rather fast pace. Steam methane reforming process, with the main difference in the presence of pre reforming in the case of hr unit 3.
Hydrogen is predominantly generated from the reaction amongst methane and steam. 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. 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. Experimental study of methane reforming with products of. Aspen hysys 2006 provides tool to design a steady and dynamics state simulation plant model of hydrogen production from methane. In steammethane reforming, methane reacts with steam under 325 bar pressure 1 bar 14. Methane steam reforming is a wellestablished process as shown in fig. Hydrogen production by steam reforming of ethanol on rhpt catalysts. Hydrogen production by steam reforming of mafiadoc. The process model is developed using the aspen hysys v7.
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