Browsing USN Open Archive by Author "Øi, Lars Erik"
Now showing items 21-40 of 47
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Process Design of a Novel Low Temperature Methanol Synthesis Process Using an Air-blown Autothermal Reformer
Ahoba-Sam, Christian; Øi, Lars Erik; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2018)Methanol (MeOH) synthesis at low temperature (100 oC) presents an opportunity for full syngas conversion per pass. This presents a cheaper alternative for MeOH synthesis using an air-blown autothermal reformer (ATR) rather ... -
Process evaluation of novel CO2 capture processes for subsea application
Ommedal, Roy Sømme (Master thesis, 2021)With a subsea module for sweetening of natural gas, it is possible to extract natural gas from places with a too high concentration of CO2 is too remote or both. The separated gas containing a high amount of CO2 needs ... -
Process Integration of Green Hydrogen: Decarbonization of Chemical Industries
Ostadi, Mohammad; Paso, Kristofer Gunnar; Rodriguez-Fabia, Sandra; Øi, Lars Erik; Manenti, Flavio; Hillestad, Magne (Peer reviewed; Journal article, 2020)Integrated water electrolysis is a core principle of new process configurations for decarbonized heavy industries. Water electrolysis generates H2 and O2 and involves an exchange of thermal energy. In this manuscript, we ... -
Process simulation and automated cost optimization of CO2 capture using Aspen HYSYS
Rahmani, Pouya (Master thesis, 2021)This thesis is based on earlier work conducted by the USN, HSN, and TUC on cost estimation and optimization of CO2 capturing from flue gas using monoetahnol amine absorption (MEA). A simulation model has been implemented ... -
Process simulation and cost estimation of CO2 capture configurations in Aspen HYSYS including Vapour Recompression
Razzaghianarmarzi, Alireza (Master thesis, 2024)The use of amine-based carbon capture technology to capture CO2 is a renowned technique. To evaluate and potentially utilize CO2 capture techniques, economic assessments are very necessary and the performance of equipment ... -
Process simulation and cost optimization of gas-based power plant integrated with amine-based CO2 capture
Aboukazempour Amiri, Esmaeil (Master thesis, 2023)Integration of gas-based power plants with CO2 capture technologies is an efficient and cost-effective technique to remove carbon dioxide from their flue gas emissions and reduce greenhouse gas emissions to reduce global ... -
Process Simulation of Calcium Looping With Indirect Calciner Heat Transfer
Jayarathna, Chameera K.; Mathisen, Anette; Øi, Lars Erik; Tokheim, Lars-André (Conference object; Peer reviewed, 2015-11-25)In calcium looping (CL), calcium oxide (CaO) is used as a sorbent for carbon dioxide (CO2). The CO2 reacts with CaO to produce calcium carbonate (CaCO3) in a carbonator operating at about 650 °C. The CaCO3 is then sent to ... -
Process Simulation, Dimensioning and Automated Cost Optimization of CO2 Capture
Shirdel, Shirvan (Master thesis, 2022)The use of an amine solvent to remove CO2 from the exhaust gas is an established and well-studied technology. Available emission data from prior research on a natural gas-based power plant project at Mongstad, Norway, was ... -
Prosess simuleringer av CO2 absorpsjon tilpasset test-data fra TCM Mongstad
Sæter, Njål Torgeir (Master thesis, 2021)Ambisjoner og krav om å redusere CO2-utslippene kan bety at mange CO2-fjerningsanlegg vil bli installert de neste årene. Prosessimuleringer er viktige for sikker design og energioptimale løsninger. I dette arbeidet er ... -
Raman Spectroscopy as an Online Monitoring Tool for CO2 Capture Process: Demonstration Using a Laboratory Rig
Jinadasa, Wathsala; Jens, Klaus-Joachim; Øi, Lars Erik; Halstensen, Maths (Journal article; Peer reviewed, 2017)A laboratory CO2 capture rig at USN was used as a demonstration plant to show the feasibility of Raman spectroscopy for online monitoring of speciation in CO2 capture process. The spectroscopy was integrated to lean and ... -
Reducing the CO2 emissions of a gas cracker by reforming fuel gas
Rustad, Emmy Kristine Lindeløff (Master thesis, 2021)With the rising need for CO2 reduction and the pressing two-degree target there is no doubt that measures must be made in the chemical process industry. Ethylene production by steam cracking is a mature and widespread ... -
Removal of CO2 from exhaust gas
Øi, Lars Erik (Doctoral dissertations at TUC;2012:2, Doctoral thesis; Peer reviewed, 2012-05-30)Removal of CO2 from exhaust gas (CO2 capture) has become a very important topic the last years. There is international agreement to limit the emissions of greenhouse gases to reduce the global warming problem, and CO2 is ... -
Simulation and Cost Comparison of CO2 Liquefaction
Øi, Lars Erik; Eldrup, Nils Henrik; Adhikari, Umesh; Bentsen, Mathias Håvåg; Badalge, Jayalanka Chathurangani Liyana; Yang, Songbo (Journal article; Peer reviewed, 2016)Liquefaction of CO2 is an intermediate step for storage or ship transport. Two processes are suggested. The traditional method is based on external refrigeration and the other is an integrated refrigeration process. In the ... -
Simulation and cost estimation of CO2 capture processes using different solvents/blends
Orangi, Sina (Master thesis, 2021)There has been a growing trend toward removing CO2 emissions from the industry with different methods. One of the most mature methods for carbon capture is to absorb CO2 in an amine-based (MEA) post-combustion ... -
Simulation and Cost Estimation of CO2 Capture Using Aspen HYSYS or Aspen Plus
Dehghanizadeh, Masoumeh (Master thesis, 2023)This study presents a techno-economic assessment of an amine-based carbon capture technology.To investigate the effects of increasing the flue gas flow rate to the plant, two additional scenarios were created. In the first ... -
Simulation and Economic Optimization of Amine-based CO2 Capture using Excess Heat at a Cement Plant
Ali, Hassan; Øi, Lars Erik; Eldrup, Nils Henrik (Journal article; Peer reviewed, 2018)In order to remove CO2 from power or process industry, a well-known method is absorption in monoethanolamine (MEA) followed by desorption, and this technology has been in operation for decades. The major challenge is the ... -
Simulation and Economic Optimization of Vapour Recompression Configuration for Partial CO2 capture
Øi, Lars Erik; Sundbø, Erik; Ali, Hassan (Journal article; Peer reviewed, 2017)A standard method for CO2 capture is by absorption in an amine based solvent followed by desorption. Such plants are traditionally designed for removal of 85-90 % CO2 from the exhaust gas as a reasonable trade-off between ... -
Simulation and Impact of different Optimization Parameters on CO2 Capture Cost
Aromada, Solomon Aforkoghene; Karunarathne, Sumudu; Eldrup, Nils Henrik; Orangi, Sina; Farsi Madan, Farzan; Fajferek, Katarzyna Grazyna; Sæter, Njål Torgeir; Bahri, Syaiful; Øi, Lars Erik (Journal article; Peer reviewed, 2021)The influence of different process parameters/factors on CO2 capture cost, in a standard amine based CO2 capture process was studied through process simulation and cost estimation. The most influential factor was found to ... -
Simulation based Cost Optimization tool for CO2 Absorption Processes: Iterative Detailed Factor (IDF) Scheme
Aromada, Solomon Aforkoghene; Eldrup, Nils Henrik; Øi, Lars Erik (Journal article; Peer reviewed, 2021)A simple, fast, and accurate process simulation based cost estimation and optimization scheme was developed in Aspen HYSYS based on a detailed factorial methodology for solvent-based CO2 absorption and desorption processes. ... -
Simulation of Condensation in Biogas containing Ammonia
Øi, Lars Erik; Bråthen, Terje; Hovland, Jon (Peer reviewed; Journal article, 2021)Condensation in raw biogas during compression is a problem because the CO2 and water in the liquid phase is very corrosive. Raw biogas typically contains 60 mol-% methane, 40 mol-% CO2, is saturated with water and may ...