Query: merox simulation hysys

title: Simulation of Dehydration Regeneration Plant for Natural Gas Processing using Aspen Hysys
abstract: This research focused on the simulation of dehydration regeneration plant for natural gas processing in Aspen Hysys using triethylene glycol(TEG) as the absorbent. The simulation data for the process plant was obtained from relevant literatures and were introduced into the software, which by the application of the principles of mass and heat transfer did the basic calculations and provided the results for analysis of the process.The simulated results for the dehydrator and regenerator showed reasonable agreement with established experimental results, which made the simulated plant a better option for the dehydration of natural gas and regeneration of the absorbent. The results obtained for the regenerator and dehydrator; area 0.8938m,0.2919m, column diameter 1.07m, 0.6096m and column height 7.14m, 6.034m respectively.The results showed that there was 92.5% regeneration of the absorbent which when validated with literature data gave deviation of 5.5%

title: Air Separation Units (ASUs) Simulation Using Aspen Hysys(r) at Oxinor I of Air Liquid Chile S.A Plant
abstract: The method used to extract copper from its ores depends on the nature of the ore. The main process currently to separate copper from sulphide ores is the smelting process. The concentrated ore is heated strongly with silicon dioxide (silica) calcium carbonate and oxygen enriched air in a furnace or series of furnaces which is carried out using the injection of the air for oxidation the Fe and Si present in the raw material. Oxygen can be produced using several different methods. One of these methods is Air separation process, which separates atmospheric air into its primary components, typically nitrogen and oxygen, and sometimes also argon and other rare inert gases by cryogenic distillation. In this paper, simulation of air separation units (ASUs) was studied using Aspen Hysys(r) The obtained simulation and model was validated with the operational data from the Oxinor I of Air Liquide S.A Plant. The ASU was divided into subsystems to perform the simulations. Each subsystem was validated separately and later on integrated into a single simulation. An absolute error of 1% and 1.5% was achieved between the simulated and observed the process variables(s) This indicated that Aspen Hysys(r) has the thermodynamic packages and required tools to perform simulations in cryogenic processes at industrial scale.

title: Simulation of Ammonia Production using HYSYS Software
abstract: Now a days, Because of cost and time consuming in the design of plants chemical engineer used simulators to simulate design and operation of chemical equipment and plant, which spares a great deal of time and cash.Today, there are many number of the simulators are refreshed and utilized in the simulation of chemical equipment and plant such as ChemCad, ProII, UniSim..etc. Among of these simulators, Aspen Hysys is the most utilized programming in all ventures because of aiding in two noteworthy fields (design operation) Simulation of ammonia synthesis process is done on Aspen Hysys V8.8 with steady state mode making some assumptions and using hypothetical reactors ammonia. By fluctuating the distinctive parameters in this simulation environment, the impact of these parameters in the generation rate of the procedure are watched.  Ammonia, Simulation, Aspen Hysys DOI 10.7176/CPER/62 03 Publication date: January 31 st 2020

title: ASU Simulation in Separating Air Components by Refrigeration Distillation (Oxygen and Nitrogen) Using ASPEN HYSYS (Case Study: SIAD Company)
abstract: Currently, air separation units (ASUs) have become very important in various industries, particularly oil and petrochemical industries which provide feed and utility services (oxygen, nitrogen, etc. In this study, a new industrial ASU was evaluated by collecting operational and process information needed by the simulator by means of HYSYS software (ASPEN ONE) The results obtained from this simulator were analyzed by ASU data and its error rate was calculated. In this research, the simulation of ASU performance was done in the presence of an expansion turbine in order to provide pressure inside the air distillation tower. Likewise, the cooling capacity of the cooling compartment and the data were analysed. The results indicated that expansion turbine is costly effective. Notably, it not only reduces the energy needed to compress air and supply power of the equipment, but also provides more cooling power and reduces air temperature. Moreover, turbines also increase the concentration of lighter gas products, namely nitrogen.

title: Development and Employment of Dynamic Simulation Integrator for OLGA and HYSYS
abstract: Subsea production system and topside processing systems are coherent system in real field but simulators are separated into two independent program, multiphase flow simulator "OLGA" and topside process simulator "HYSYS" It requires labor to transfer the values between two simulators especially in transient cases, where step time is less than 1 second, which blocks fluent transient simulation. So integrator has been developed to automatically transferring values in two way and controlling timesteps of both integrators. Algorithms were developed to give control between simulators, and systematic approaches were optimized for two programs using DCOM configuration and OPC DA specifications. To verify the integrator, some case studies were designed and done using pre built simulation models. Also other modules were added to analyze the integrated simulation with in house source code.

title: Simulation and Analysis of a Petrochemical Process (Deethanizer Column MLE field) using HYSYS Aspen Simulator
abstract: Natural gas industry has a great strategic and economic importance; it becomes one of the most attractive business opportunities in the petroleum and petrochemical field. In order to produce high quality gas, many companies all over the world including Algeria create many plants for natural gas processing to clean raw natural gas, by using separation unites and other services to get a product that respect the commercial specifications. Natural gas fractions are separated by distillation column in our case is called deethanizer tower. In this work a dynamic simulation study of deethanizer column is developed and implemented in HYSYS simulator. Simulation results prove that the HYSYS is a powerful tool to simulate industrial processes such that the simulated results are close to the real ones.

title: Simulation of Solid Oxide Fuel Cell Anode in Aspen HYSYS A Study on the Effect of Reforming Activity on Distributed Performance Profiles, Carbon Formation, and Anode Oxidation Risk
abstract: A distributed variable model for solid oxide fuel cell (SOFC) with internal fuel reforming on the anode, has been developed in Aspen HYSYS. The proposed model accounts for the complex and interactive mechanisms involved in the SOFC operation through a mathematically viable and numerically fast modeling framework. The internal fuel reforming reaction calculations have been carried out in a plug flow reactor (PFR) module integrated with a spreadsheet module to interactively calculate the electrochemical process details. By interlinking the two modules within Aspen HYSYS flowsheeting environment, the highly nonlinear SOFC distributed profiles have been readily captured using empirical correlations and without the necessity of using an external coding platform, such as MATLAB or FORTRAN. Distributed variables including temperature, current density, and concentration profiles along the cell length, have been discussed for various reforming activity rates. Moreover, parametric estimation of anode oxidation risk and carbon formation potential against fuel reformation intensity have been demonstrated that contributes to the SOFC lifetime evaluation. Incrementally progressive catalyst activity has been proposed as a technically viable approach for attaining smooth profiles within the SOFC anode. The proposed modeling platform paves the way for SOFC system flowsheeting and optimization, particularly where the study of systems with stack distributed variables is of interest.

title: Process Simulation for Crude Oil Stabilization by Using Aspen Hysys
abstract: A light fluid from different reservoir formation started recently to associate the production of the crude oil stabilization plant which is unfortunately not enough to release off all light components and as a results the true vapor pressure increased in the storage tanks more than 12 psi. From the results in Aspen Hysys, it was found that manipulating of working parameters for the existing plant likewise the inlet temperature, dry fluid flow rate, water flow rate and the temperature of the outlet fluid from Fired heater have no great effect on the true vapor pressure (TVP) The TVP at normal feed conditions of 50.5 C and for the plant with third and fourth stages are 14.96 Kg/Cm. a and 10.23 Kg/Cm. a, respectively. It was found that for the third stage, the changing in feed flow rates for both dry and water have no effect on the reducing TVP, while to stabilized the TVP for the exported crude oil within range of (68947.6 82737.1) Pa/(10 12) psia when the the fourth separator used in the process plant, the feed dry fluid flow rate (26.4 105.6) KBD, the minimum base sediment and water cut in the feed stream 4 Vol% the inlet fluid temperature (43 51.5)0C and the differential temperature across the fired heater in range of (16 24)0C with feed temperature range (40 55)0C.

title: Simulation Production of Dimethylether (DME) from Dehydration of Methanol Using Aspen Hysys
abstract: Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is miscible with most organic solvents and has a high solubility in water. Recently, the use of (DME) as a fuel additive for diesel engines has been investigated due to its high volatility (desired for cold starting) and high cetane number of 55 60, with the advantage of high efficiency, and low exhaust emissions (no particulates, no Sulphur, and low NOx) Technical quality (DME) is an alternative to liquefied petroleum gas (LPG) The production processes included catalytic dehydration of methanol in an adiabatic fixed bed reactor and two columns product separations. In this study, the technological process for (DME) synthesis is simulated in Aspen Hysys V3.1 based on the combined parameters of the reaction dynamic model for methanol dehydration reaction, the improved NRTL model of the liquid phase, the PR model of vapor phase was selected as the fluid package as it is able to handle selected pure components (methanol, water and dimethyl ether) The equilibrium reaction was selected to describe conversion of methanol to DME reaction and it is about 80% A feasibility study and design of a plant producing 99.9 wt% Dimethyl ether (DME) The plant is designed which is capable of producing 50,000 metric tons of (DME) per year via the catalytic dehydration of methanol over an acid zeolite catalyst.

title: Modelling and Simulation of a Natural Gas Liquid Fractionation System Using Aspen HYSYS
abstract: The global use of natural gas is growing quickly, and this is attributed primarily to its environmental advantage over fossil fuels such as crude oil and coal. This natural gas is usually flared in refineries because extra charges would be incurred in collecting and processing it. A country flares about 800 million standard cubic feet (Mmscf) of gas per day, from approximately 144 gas flare points across the nation, losing a huge amount of money per annum. A liquefied natural gas plant has converted about 5.58 trillion cubic feet (Tcf) of associated gas to exports as liquefied natural gas and natural gas liquids (NGLs) thus helping to reduce gas flaring from upstream companies. Natural gas liquids (NGLs) are major contributors to this economic benefit through petrochemical feedstock for industrial purposes, fuel for residential, commercial and agricultural applications, in addition to using other products as propellant, refrigerant and gasoline blending. To contribute to the technology of natural gas liquid system, in this work, a fractionation system has been modelled and simulated using Aspen HYSYS to determine the status of processes involved and the compositions of the NGLs. The results obtained revealed that each of methane, ethane, propane, iso butane and n butane could be successfully separated with high purity from natural gas feed stream. Also, it was observed from the validation carried out on the developed model of the system, which was ascertained by its operations that were in line with the theoretical principles of separation involved in the plant, that it can be used for further analyses of the system.