In contrast, smr releases about 350 kg of co2 per 1,000 nm3 of syngas. The aspen hysys software used for the simulation conducted here does. 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. 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. Page 1 steam reforming of natural gas at petroleum refining facilities is the predominant means of producing hydrogen in the chemical process industries cpi. Influence of ceo2, zro2, and la2o3 as supports bernay cifuentes 1, manuel f.
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. Assessment of co2 capture options from various points in. For the baseline hfa, we compared the costs and efficiencies of two hydrogengeneration technologies steam methane reforming and autothermal reforming and two hydrogen purification. Usually, in oil refineries, flow instability in composition of feedstock can affect the product quality. Steam methane reforming process, with the main difference in the presence of pre reforming in the case of hr unit 3. Methane steam reforming msr is a wellestablished production method that currently generates 95% of hydrogen in the u. 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 steam methane reforming process can be broken down into five distinct steps. Career paths for software engineers and how to navigate it. Simulating the production of propylene glycol from water and propylene oxide using hysys duration. Recovery of co 2 from units of steam methane reforming at.
Pdf kinetic based simulation of methane steam reforming and. It has the fourth highest production rate behind the monomers of ethylene, vinyl chloride and propylene. 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 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. 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. The gas produced by the steam reforming reaction first passes through a shift reactor, where carbon monoxide converts to carbon dioxide and hydrogen. Specialized software aspen hysys version 2006 was used as. The reaction is strongly endothermic consumes heat. Hydrogen production by steam reforming of ethanol on rhpt catalysts.
If anyone is working with modelling of steam methane reforming with. I use hysys process simulation software in the capstone course in chemical engineering ceng416 that i teach at yale university. Process modelling, thermodynamic analysis and optimization of. Cost and performance comparison of stationary hydrogen. Simulation of ammonia production using hysys software. Mass and energy balances have been established for all cases. Onsite hydrogen generation by steam methane reforming. Mitigating carbon dioxide impact of industrial steam methane. Depending on the quantities of the desired products, the elements of the process can be adapted. Simulation of solid oxide fuel cell anode in aspen hysysa.
The catalytic reforming unit by using hysys refinery software was simulated. Towards a thermal optimization of a methanesteam reforming reactor. For the thermodynamic analysis, a commercial software aspenhysys is used. In the reforming process of methane with steam, the dominant reactions are the following two 22. The process has been simulated using aspentechs process engineering software hysys version 3. Videos you watch may be added to the tvs watch history and. 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. There are multiple types of reformers in development but the most common in industry are autothermal reforming atr and steam methane reforming smr. The economical means to produce hydrogen in these industries is steam methane reforming. 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. Steam reforming is endothermicthat is, heat must be supplied to the process for the reaction to proceed. In this study, the methane reforming process has been investigated for the high residence time 3. Hysys can help the students perform lengthy calculati. Comparison of exergy losses for reformers involved in hydrogen.
Aspen hysys 2006 provides tool to design a steady and dynamics state simulation plant model of hydrogen production from methane. H298k 75 kjmol ch4 several parameters have been defined, including dimensions and information on the porous medium. Methane steam reforming is a wellestablished process as shown in fig. The methanesteam reforming process is widely known as a conventional process for producing hydrogen 5. 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. Steam methane reforming simulation hydrogen production hysys tutorial p sims. Optimization of a methane autothermal reformingbased. Industry is currently making hydrogen from natural gas via steam reforming. 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. Steam methane reforming smr and autothermal reformer atr are two industrial examples of the primary and secondary reformers, respectively.
Heat and power integration of methane reforming based hydrogen. Experimental study of methane reforming with products of. Natural gas is sent to the primary reformer for steam reforming, where superheated steam is fed into the reformer with the methane at. The results show that, at lower temperatures, methane total oxidation reaction is favored, generating co2. As a result, this step is co2 neutral to slightly negative, explains bottke. Hi, i am trying to simulate steam methane reforming in hysys and read some articles. 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. May 19, 2011 steam methane reforming simulation hydrogen production hysys tutorial p sims.
Steam reforming of methane steam reforming of methaneitso chen october 24, 2010submitted as coursework for physics 240, stanford university, fall 2010. 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. The main reactions associated with the steam methane reforming. Using hysys, you can model and simulate the steam ethane reforming with propylene very easy. Hysys pfr reactors using kinetic rates tutorial using styrene styrene is a monomer used in the production of many plastics. In addition to the maturity of the technology, natural gas reforming is also the most economical among all hydrogen production pathways. For the thermodynamic analysis, a commercial software aspen hysys is used. Hysys has a large electronic software library to model these. The main purpose of this technology is hydrogen production.
Heat and power integration opportunities in methane reforming. 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 document chemical process simulation and the aspen hysys software, version 7. Steam methane reforming simulation hydrogen production. Kinetics, catalysis and mechanism of methane steam reforming. So i am wondering how it can be determined whether. 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. The steam methane reforming process the steam methane reforming process can be used industrially to produce hydrogen, carbon monoxide and their mixtures. In its simplest form, the steam methane reforming process for pure. 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. Lemonidou and vasalos experimentally investigated combined co 2 methane reforming with steam methane reforming over 5 wt. 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.
Pdf kinetic based simulation of methane steam reforming. Water enters the furnace, producing steam at a very high temperature. At higher temperatures, methane reforming by co2 and steam occur, favoring the. Steam methane reforming simulation hydrogen production hysys. Steam methane reforming is the most widely used process for bulk gas production, accounting for 95% of the hydrogen produced in the united states. Towards a thermal optimization of a methanesteam reforming. The dry methane reforming reaction is favored by low pressure, but high pressure synthesis gas is required in the downstream process. Heat and power integration opportunities in methane.
In energy, smr is the most widely used process for the generation of hydrogen 2 if playback doesnt begin shortly, try restarting your device. 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. Optimization of a methane autothermal reforming based. Integration of methane steam reforming and water gas shift. Steam methane reforming chemical process simulation. An equilibrium or gibbs reactor is appropriate or the smr reactor and one or two additional equilibrium reactors for the shift reactors. The process model is developed using the aspen hysys v7.
Hydrogen production from methane autothermal reforming. What is the best aspen plus model for simulation of steam. Simulation of methane slippage in steam methane reforming mohd. Technoeconomic analysis tea for co 2 reforming of methane in a membrane reactor mr was conducted by using process simulation and economic analysis. In the reforming process of methane with steam, the dominant.
The autothermal reforming of methane developed using hysys 2006. Hydrogen steam methane reformer production overview. A conventional methane reforming based hydrogen production plant can be represented with the block diagram in fig. Bd energy systems have executed more than 90 steam methane reformer projects which include lumpsum revamp and turnkey epc projects and cover a. Steam and hydrocarbon enter the reactor as feedstock, and hydrogen and carbon dioxide are generated at the end of the process. 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. 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 steammethane reforming, methane reacts with steam under 325 bar pressure 1 bar 14.
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. Steam methane reforming is the most common and economical way to make hydrogen. Figure 2 molar fraction in dry base of products during autothermal reforming of methane at different temperatures. Section 2 is based on a steam methane reforming smr process that produces 719 tonsday of hydrogen. The catalytic reforming unit by using hysysrefinery software was simulated. Hysys can help the students perform lengthy calculations in a manner of a few seconds.
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. 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. Natural gas, acid gas to syngas, low emissions, syngas, steam reforming. 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. 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 simulation hydrogen production hysys tutorial. The hfa is composed of a reforming system including the reformer, gas cleanup system, and peripheral components, a hydrogen compressor, storage tanks, and dispenser. Hydrogen production by steam reforming chemical engineering. Styrene is made from the dehydrogenation of ethylbenzene. Design and control of the dry methane reforming process. Mar 30, 2015 methane steam reforming pdf document methane steam reforming.
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. 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. Sep 19, 2016 methane steam reforming msr is a wellestablished production method that currently generates 95% of hydrogen in the u. The pengrobinson equations of state were used to calculate the stream physical and transport properties. Steam reforming or steam methane reforming is a method for producing syngas hydrogen and carbon monoxide by reaction of hydrocarbons with water.
Higher reactor pressures reduce compression costs of the synthesis gas. 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 reforming reaction, natural gas is mixed with steam, heated to over 1,500 degrees fahrenheit, and reacted with nickel catalyst to produce hydrogen h. Carbon monoxide is reacted downstream in two, high and lowtemperature. For this purpose, methane was used the starting point and building block for the progressive understanding of reforming of complex hydrocarbons. Firstly, flowsheet models were developed for both the standalone systems and autothermal reforming process using aspen hysys. 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. There are multiple types of reformers in development but the most common in industry are autothermal reforming atr and steam methane. Hydrogen is predominantly generated from the reaction amongst methane and steam. The results are validated by operating data, which is taken from the esfahan oil refinery catalytic reforming unit. Steps of designging a steam methane reformer for syngas production.