I have sucessfully done it in promax before, but first time in hysys. Glycol solutions are the commonly used liquid absorbent in dehydration process. I am currently trying to model a teg dehydration unit in hysys. What job profile will one work on after getting an aspen. With the addition of the cubicplusassociation cpa package in v10, aspen hysys can be used to model dehydration with teg, meg and deg. Simulation of gas dehydration on an fpso using aspen hysys. Tetraethylene glycol would have to be regenerated at higher temperatures than teg to reach the required purity for application in a glycol dehydration unit. Thus, of the four glycols, teg is the best suited for dehydration of natural gas. Build a vacuum distillation tower with side draws and pump arounds. With all units optimally specified during the process, the lean teg inflow rate was varied with the water content in the dry gas product stream of the contactor column. There are 2 things here getting a certification from aspen and getting a certification in aspen hysys. The dehydration unit on gullfaks a utilizes an absorption process which consists of.
Pdf simulation and optimization of the utilization of. Aspen hysys or simply hysys is a chemical process simulator used to mathematically model chemical processes, from unit operations to full chemical plants and refineries. Press room software evaluation support center training center. Hysys was first conceived and created by the canadian company hyprotech, founded by researchers from the university of calgary.
Aspen hysys software was used as a simulation tool for the dehydration of the gas using. The process conditions used in this simulation are those obtained from the spdc south south nigeria. Model a typical gas dehydration unit and study gas saturation, hydrate formation conditions, and unit operation performance throughout the model mercury removal define a production allocation analysis. This document entitled chemical process simulation and the aspen hysys software is a selfpaced instructional manual that aids students in learning how to use a chemical process simulator and how a process simulator models material balances, phase equilibria. Teg glycol dehydration hysys simulation, help chemical. Each tutorial guides you stepbystep through the complete construction of a hysys simulation. A study by the natural gas star program epa reports approximately 36,000 glycol dehydration systems in the us natural gas production sector. Natural gas is an important energy source among other sources of fossil fuels. Natural gas dehydration unit with teg tri ethylene glycol. From hysys simulation, a gas plant was placed under investigation with the aim of studying the effects of variation in glycol flow rates, number of stages 4, 8 and 12 trays of the absorber, reboiler temperature 180oc, 190oc and 200oc and stripping gas rate on the water content of the gas in a glycol dehydration unit in the niger delta.
The objective of this experiment is to carry out a simulation on teg dehydration unit using aspenhysys process software. The four major methods of dehydration are absorption, adsorption, gas permeation and refrigeration. A complete beginners guide to zoom 2020 update everything you need to know to get started duration. In order to ensure design options meet the necessary requirements of saving capital, solvent or energy costs, th. Review methods for saturating a hydrocarbon stream with water in aspen hysys.
The impact of stripping gas flow rate on triethylene glycol losses from glycol regeneration unit. Ben balden live a happier, fuller life recommended for you. The process flow diagram of the gas dehydration and glycol recovery systems by aspen hysys. Hysys is able to perform many of the core calculations of chemical engineering, including those concerned with mass balance, energy balance, vaporliquid equilibrium, heat transfer, mass transfer, chemical kinetics. Design validation of dehydration unit with the plant data using aspen hysys. Water must be removed from carbon dioxide co 2 after capture because of risk for corrosion and hydrate formation. In a simulation based on a mathematical model of system behavior, defined as the process. Jun 17, 2017 aspen hysys the best process simulation software for the oil and gas industry is continuously upgraded to add new functionalities for improved process design and safe, optimized plant operations all in a unified engineering environment. In this study, dehydration of natural gas using triethylene glycolteg as a dehydrating or absorption agent were studied considering the use of hysys as a process simulator. This is important in an fpso since the removal of water from natural gas is necessary before processing, and due to the fact that natural gas from the reservoir. Hysys cpa neqsim proved to be the best suited fluid package for dehydration of natural gas using teg as an absorbent. The process of dehydration by using teg is absorption, involves the use of a liquid desiccant to remove water content from the gas. The hysys simulation is conducted with the glycol package, which is created specifically to simulate gas dehydration, and pengrobinson.
Minimize solvent costs and meet gas specifications, dehydration process optimization. This document entitled chemical process simulation and the aspen hysys software is a selfpaced instructional manual that aids students in learning how to use a chemical process simulator and how a process simulator models material balances, phase equilibria, and energy balances for chemical process units. The impact of stripping gas flow rate on triethylene glycol. Process simulation hysys tutorial risman member of qatar. This paper discusses the dehydration modeling technology available with aspen hysys in v10 and above. The first one, is conducted by the company aspen tech which has bought hysys the simulation software package, a few years back. In order to ensure design options meet the necessary requirements of saving capital, solvent or energy costs, thermodynamic modeling and a holistic view of operations is needed. The mixtures of water in natural gas can cause the problems for the production operation, transportation, storage and use of the gas. Process analysis of dehydration in the natural gas and carbon capture industry. There are three types of glycol that are typically used in industries but any of them gives a different water dew point temperature. The impact of stripping gas flow rate on triethylene. In this thesis, the sweetening process as well as the two dehydration technical.
The dehydration of natural gas is very essential in the gas processing industry to remove water vapor. Chemical process simulation and the aspen hysys software. I have collected some tutorial video for our learning purpose. Glycol dehydration systems are not only efficient at removing water from a natural gas stream, they also remove benzene, toluene, ethylbenzene, and xylene btex as well as other volatile organic compounds vocs. This process is the traditional triethylene glycol teg based dehydration process and represent a unit with gas absorption and extraction solvent regeneration. Methodology the design and simulation of the natural gas dehydration plant utilized in this work to achieve the desired objectives. Optimization of natural gas dehydration using triethylene glycol was carried out using aspen hysys process software and regression analysis. Modelling of natural gas sweetening and dehydration processes. Economics and sensitivity analysis of the stripping gas design configuration. Teg glycol dehydration hysys simulation, help posted in chemical process simulation. Process simulation of dehydration unit for the comparative. Hello everyone, i am currently working on a natural gas treating project for an upstream facility. In the past years, glycol dehydration plants have been successfully designed using offtheshelf process simulators such. In natural gas systems, removing water vapor reduces pipeline corrosion and eliminates line blockage caused by hydrate formation.
Investigation and optimization of gas dehydration unit in one of the. Aspen hysys has historically employed the glycol property package for teg. Hysys is a portmanteau formed from hyprotech, the name of the company which created the software, and systems. The objective of this experiment is to carry out a simulation on teg dehydration unit using aspenhysys process. Oct 09, 2018 gas dehydration and glycol regeneration. Without this basic information the sizing of an adequate dehydrator is. The thesis focuses on parameters relevant for gas dehydration. Benzene emissions calculations for teg units by glycalc and hysys. How to convert pdf to word without software duration. Pdf the dehydration unit of a plant that processes natural gas uses.
Natural gas facilities are designed to handle water removal from the gas stream to meet pipeline specification of water content in the processed gas stream. Aspenhysys simulation of methanol to dimethylether dme. The tutorials you choose to work through will likely depend on the simulation topic that is. In this study, a hysys model of the plant was developed and used to investigate the important. Water vapor in natural gas stream, poses threat to process. Validation of the cpa property package dehydration units are often overdesigned, resulting in high capital or operating costs. The dehydration unit of a plant that processes natural gas uses triethylene glycol teg as an absorbent to remove water from the gas to prevent blockages in pipes due to the formation of hydrates.
Use templates and subflowsheets to streamline and organize simulation models. The entire dehydration process has also been simulated in hysys, with two thermodynamic packages. Hysys is a powerful engineering the simulation tool. How to remove water vapour in natural gas dehydration teg glycol by hysys by karwan kamal how to download and install aspen technology v9 hysys with.
Pdf simulation and optimization of the utilization of triethylene. An example of natural gas dehydration, using teg, was built with prosimplus. Use the hydrate formation analysis to calculate hydrate formation temperatures and pressures. The teg dehydration unit will remove some heavy hydrocarbons, in addition to water, and further reduce the hydrocarbon dew point. In the past years, glycol dehydration plants have been successfully designed using offtheshelf process simulators such as aspen hysys, promax and other similar tools. Glycalc has been the software of choice for regulatory agencies in north america with respect to estimating benzene emissions from glycol dehydration units.
Natural gas dehydration system used absorption method to remove water vapor in wet gas. Hysys simulation diagram for typical gas dehydration unit. To that purpose, they performed a sensitivity analysis and showed that the increase in stripping gas rate leads to higher lean teg purity and. Hysys serves as the engineering plat form for modeling processes, hamid 5. Aspen hysys software was used as a simulation tool for the dehydration of the gas using triethylene glycol teg as an absorbent for the removal of water vapour. Most dehydration projects involve either absorption or adsorption technology. In aspen hysys simulation environment, there are steps involved in modeling a chosen process.
Department of process, energy and environmental technology. The objective is to reduce the amount of water in the natural gas with teg, used as the extraction solvent. Within the ecfunded project dehydration and hydrocarbon dewpointing of natural gas by membrane technology coordinated by gkss several of europes largest companies in the oil and gas industries have evaluated the use of membranes for the separation of water. The tutorials you choose to work through will likely depend on. The modern process simulation packages hysys, aspen, simsci, prosim, and others can. The interesting points of this example lie in the use of the absorption module for the contactor model and in the representation of two columns connected in series the teg regenerator and the teg stripper by a single prosimplus stripper module. Dehydration and hydrocarbon dewpointing of natural gas by. At the sales meter, without a conditioning unit the hydrocarbon dew point is usually close to the lowest temperature the gas has achieved on the location before it was sampled, at operating pressure.
Dehydration of natural gas is the process removal of the water that is associated with natural gases. Utilize a wide variety of unit operation models and calculation tools to model process equipment. Benzene emissions calculations for teg units by glycalc. Griglycalc and aspentechs hysys are simulation tools frequently used to predict benzene emissions from glycol dehydration units. Optimization of natural gas dehydration using triethylene. V10, aspen hysys can be used to model dehydration with teg, meg and deg. Hysys tutorials a1 a1 a hysys tutorials the tutorials section of this manual presents you with independent tutorial sessions.
Sensitivity analysis and process optimization of a natural. Depending on the application, meis process design is based on promax or hysys software, will limit plot and height of the dehydration unit, and limit the volume of gaseous vocs emissions. This work was limited due to financial constraint, difficulty arising from the software used hysys. Process simulation an overview sciencedirect topics. Within the ecfunded project dehydration and hydrocarbon dewpointing of natural gas by membrane technology coordinated by gkss several of europes largest companies in the oil and gas industries have evaluated the use of membranes for the separation of water vapour and higher hydrocarbons from natural gas. Simulation of gas dehydration on an fpso using aspen hysys abstract natural gas is an important energy source among other sources of fossil fuels. The project work involves the fabrication of the dehydration unit on the floating, production, storage and offloading vessel fpso and simulation of the natural gas dehydration using the of aspen hysys. Process simulation of triethylene glycol based dehydration. Simulation of typical natural gas dehydration unit using. The collective components constituting a teg dehydration unit is thoroughly described together with giving an insight into the design methods used for designing a teg dehydration process.
I am having issues with converging the glycol regenerator. Aspen hysys is a comprehensive process modeling tool used by the worlds leading oil and gas producers, refineries, and engineering companies for process simulation and process optimization in design and operation. In glycol dehydration, teg is usually referred to only as glycol. Aspen hysys based simulation and analysis of crude. With the use of hysys software, natural gas dehydration plant was designed. Simulation study ibrahim tk1, abdulrahman rk 2, khalaf fh1 and kamal im3 1petroleum engineering department, faculty of engineering, knowledge university, kurdistan, iraq. Dehydration units are often overdesigned, resulting in high capital or operating costs.
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