Steps of designging a steam methane reformer for syngas production. 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. If anyone is working with modelling of steam methane reforming with. Hi, i am trying to simulate steam methane reforming in hysys and read some articles. The aspen hysys software used for the simulation conducted here does. As a result, this step is co2 neutral to slightly negative, explains bottke. Optimization of a methane autothermal reforming based. Steam reforming of methane steam reforming of methaneitso chen october 24, 2010submitted as coursework for physics 240, stanford university, fall 2010. Pdf kinetic based simulation of methane steam reforming. Pdf kinetic based simulation of methane steam reforming and.
Methane steam reforming is a wellestablished process as shown in fig. Assessment of co2 capture options from various points in. Steam reforming or steam methane reforming is a method for producing syngas hydrogen and carbon monoxide by reaction of hydrocarbons with water. It has the fourth highest production rate behind the monomers of ethylene, vinyl chloride and propylene. Steam methane reforming chemical process simulation.
Career paths for software engineers and how to navigate it. Page 1 steam reforming of natural gas at petroleum refining facilities is the predominant means of producing hydrogen in the chemical process industries cpi. Steam methane reforming simulation hydrogen production. 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. 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. Simulation of ammonia production using hysys software. Sep 19, 2016 methane steam reforming msr is a wellestablished production method that currently generates 95% of hydrogen in the u. Steam methane reforming simulation hydrogen production hysys tutorial.
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. 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. New catalysts enable co2neutral olefins production via. 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. Usually, in oil refineries, flow instability in composition of feedstock can affect the product quality. I use hysys process simulation software in the capstone course in chemical engineering ceng416 that i teach at yale university. The steam methane reforming process can be broken down into five distinct steps. Integration of methane steam reforming and water gas shift. 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. The catalytic reforming unit by using hysysrefinery software was simulated.
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. In energy, smr is the most widely used process for the generation of hydrogen 2 if playback doesnt begin shortly, try restarting your device. Hysys can help the students perform lengthy calculations in a manner of a few seconds. Steam methane reforming process, with the main difference in the presence of pre reforming in the case of hr unit 3. 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. Hysys can help the students perform lengthy calculati. 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. Steam methane reforming smr is a process in which methane from natural gas is heated, with steam and a catalyst, to produce synthetic fuel. Methane steam reforming msr is a wellestablished production method that currently generates 95% of hydrogen in the u. An equilibrium or gibbs reactor is appropriate or the smr reactor and one or two additional equilibrium reactors for the shift reactors. 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. Simulation of methane slippage in steam methane reforming mohd. In contrast, smr releases about 350 kg of co2 per 1,000 nm3 of syngas. For the thermodynamic analysis, a commercial software aspenhysys is used.
Simulating the production of propylene glycol from water and propylene oxide using hysys duration. The steam methane reforming process the steam methane reforming process can be used industrially to produce hydrogen, carbon monoxide and their mixtures. Using hysys, you can model and simulate the steam ethane reforming with propylene very easy. Hydrogen production from methane autothermal reforming. In addition to the maturity of the technology, natural gas reforming is also the most economical among all hydrogen production pathways. In steammethane reforming, methane reacts with steam under 325 bar pressure 1 bar 14. 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. Technoeconomic analysis tea for co 2 reforming of methane in a membrane reactor mr was conducted by using process simulation and economic analysis. Higher reactor pressures reduce compression costs of the synthesis gas.
Process modelling, thermodynamic analysis and optimization of. Hysys has a large electronic software library to model these. 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. Heat and power integration opportunities in methane. In the reforming process of methane with steam, the dominant. The process has been simulated using aspentechs process engineering software hysys version 3. The hfa is composed of a reforming system including the reformer, gas cleanup system, and peripheral components, a hydrogen compressor, storage tanks, and dispenser.
Simulation of solid oxide fuel cell anode in aspen hysysa. May 19, 2011 steam methane reforming simulation hydrogen production hysys tutorial p sims. Bd energy systems have executed more than 90 steam methane reformer projects which include lumpsum revamp and turnkey epc projects and cover a. Heat and power integration opportunities in methane reforming. So i am wondering how it can be determined whether. Towards a thermal optimization of a methanesteam reforming reactor. 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. Post jobs, find pros, and collaborate commissionfree in our professional marketplace. Experimental study of methane reforming with products of.
Comparison of exergy losses for reformers involved in hydrogen. Heat and power integration of methane reforming based hydrogen. Steam methane reforming simulation hydrogen production hysys. In this study, the methane reforming process has been investigated for the high residence time 3. 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.
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. Industry is currently making hydrogen from natural gas via steam reforming. For this purpose, methane was used the starting point and building block for the progressive understanding of reforming of complex hydrocarbons. The autothermal reforming of methane developed using hysys 2006. Water enters the furnace, producing steam at a very high temperature. The results are validated by operating data, which is taken from the esfahan oil refinery catalytic reforming unit. The main purpose of this technology is hydrogen production. 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. Mass and energy balances have been established for all cases. In the reforming process of methane with steam, the dominant reactions are the following two 22. Mar 30, 2015 methane steam reforming pdf document methane steam reforming. Natural gas, acid gas to syngas, low emissions, syngas, steam reforming.
Steam methane reforming smr and autothermal reformer atr are two industrial examples of the primary and secondary reformers, respectively. Aspen hysys 2006 provides tool to design a steady and dynamics state simulation plant model of hydrogen production from methane. The results show that, at lower temperatures, methane total oxidation reaction is favored, generating co2. 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. Steam methane reforming is the most widely used process for bulk gas production, accounting for 95% of the hydrogen produced in the united states. There are multiple types of reformers in development but the most common in industry are autothermal reforming atr and steam methane reforming smr. 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. Recovery of co 2 from units of steam methane reforming at. The gas produced by the steam reforming reaction first passes through a shift reactor, where carbon monoxide converts to carbon dioxide and hydrogen.
The main reactions associated with the steam methane reforming. Mitigating carbon dioxide impact of industrial steam methane. 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. 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. In recent years, the need for hydrogen to be used in petrochemical plants and refineries has been growing at a rather fast pace. Hydrogen production by steam reforming chemical engineering. Natural gas is sent to the primary reformer for steam reforming, where superheated steam is fed into the reformer with the methane at. Firstly, flowsheet models were developed for both the standalone systems and autothermal reforming process using aspen hysys. Hysys pfr reactors using kinetic rates tutorial using styrene styrene is a monomer used in the production of many plastics.
The document chemical process simulation and the aspen hysys software, version 7. The reaction is strongly endothermic consumes heat. Section 2 is based on a steam methane reforming smr process that produces 719 tonsday of hydrogen. The catalytic reforming unit by using hysys refinery software was simulated. What is the best aspen plus model for simulation of steam. Styrene is made from the dehydrogenation of ethylbenzene. Onsite hydrogen generation by steam methane reforming. Steam reforming is endothermicthat is, heat must be supplied to the process for the reaction to proceed. 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. Towards a thermal optimization of a methanesteam reforming. However, higher pressures also require a higher reactor temperature to achieve high methane conversion. 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. The economical means to produce hydrogen in these industries is steam methane 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. The dry methane reforming reaction is favored by low pressure, but high pressure synthesis gas is required in the downstream process. Steam methane reforming is the most common and economical way to make hydrogen. The process model is developed using the aspen hysys v7.
At higher temperatures, methane reforming by co2 and steam occur, favoring the. 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 methanesteam reforming process is widely known as a conventional process for producing hydrogen 5. For the thermodynamic analysis, a commercial software aspen hysys is used. Steam methane reforming simulation hydrogen production hysys tutorial p sims. Influence of ceo2, zro2, and la2o3 as supports bernay cifuentes 1, manuel f. Depending on the quantities of the desired products, the elements of the process can be adapted. The pengrobinson equations of state were used to calculate the stream physical and transport properties. Videos you watch may be added to the tvs watch history and. Cost and performance comparison of stationary hydrogen. Process modelling, thermodynamic analysis and optimization. Hydrogen is predominantly generated from the reaction amongst methane and steam.
A conventional methane reforming based hydrogen production plant can be represented with the block diagram in fig. Optimization of a methane autothermal reformingbased. Hydrogen steam methane reformer production overview. 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 reformers remain our core market with our engineers having extensive experience encompassing process design, detailed design, and construction expertise of all major technology licensors. 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. Hydrogen production by steam reforming of ethanol on rhpt catalysts.
Figure 2 molar fraction in dry base of products during autothermal reforming of methane at different temperatures. H298k 75 kjmol ch4 several parameters have been defined, including dimensions and information on the porous medium. Carbon monoxide is reacted downstream in two, high and lowtemperature. Specialized software aspen hysys version 2006 was used as. Steam and hydrocarbon enter the reactor as feedstock, and hydrogen and carbon dioxide are generated at the end of the process. 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. In its simplest form, the steam methane reforming process for pure. Steam methane reforming hydrogen production hysys tutorial. There are multiple types of reformers in development but the most common in industry are autothermal reforming atr and steam methane. Kinetics, catalysis and mechanism of methane steam reforming.
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