Blar i Institutt for kjemisk prosessteknologi på tittel
Viser treff 637-656 av 1783
-
Finding Self-optimizing Control Variables Using Process Data
(Master thesis, 2014)In this project we have studied a newly developed way to find self-optimizing variables. The method studied in this thesis uses data measurements, y, to fit a quadratic cost function. By using parameters found in the cost ... -
Fine-Tuning of Particle Size and Morphology of Silica Coated Iron Oxide Nanoparticles
(Journal article; Peer reviewed, 2023) -
Fischer-Tropsch Catalysts for Jet Fuel Production
(Master thesis, 2014)Diverse β-zeolite and β-zeolite/Fischer Tropsch catalysts were prepared under hydrothermal conditions to obtain a tailored jet fuel catalyst. The Fischer Tropsch catalyst that was employed is cobalt-based and it was provided ... -
Fischer-Tropsch conversion of biomass-derived synthesis gas to liquid fuels
(Journal article, 2013)Recent and ongoing research on Fischer-Tropsch catalysts for biomass conversion typically focus on the effects of impurities common in bio-derived synthesis gas, and also on the effect of different synthesis gas compositions ... -
Fischer-Tropsch reaction kinetics: Mathematical modeling and model fitting
(Master thesis, 2019)I denne masteroppgaven er en matematisk modell for Fischer-Tropsch syntesen foreslått. Modellen inkluderer effektene av vann på reaksjonskinetikk, selektiviteter, og deaktivering av katalysator. Modellen er basert på ... -
Fischer-Tropsch synthesis over an alumina-supported cobalt catalyst in a fixed bed reactor – Effect of process parameters
(Peer reviewed; Journal article, 2020)Fischer-Tropsch synthesis has been investigated over a commercial type cobalt-based catalyst (20 %Co/0.5 %Re/γ-Al2O3) by varying the H2/CO ratio (2.55–1.12), CO conversion (15–75 %), reaction temperature (210 °C, 230 °C), ... -
Fischer-Tropsch synthesis over cobalt supported catalysts
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:134, Doctoral thesis, 2005)The following catalysts have been studied by different characterization techniques and by kinetic experiments at FT conditions: 12 % Co/γ-Al2O3, 12 % Co - 0.5 % Re/γ-Al2O3, 12 % Co/SiO2, 12 % Co - 0.5 % Re/SiO2, 12 % Co/TiO2 ... -
Fischer-Tropsch synthesis – Influence of aerosol – deposited potassium salts on activity and selectivity of Co based catalysts
(Doctoral theses at NTNU;2018:104, Doctoral thesis, 2018)The effect of potassium salts (K2SO4, KNO3, KCl, K2CO3) on cobalt based Fischer-Tropsch catalysts has been studied experimentally and theoretically. In order to better understand the deactivation effect of potassium species, ... -
Fischer-Tropsch Synthesis: Conversion of Bio-Syngas to Hydrocarbons
(Master thesis, 2019)Dette prosjektet omhandler Fischer-Tropsch syntese over cobolt-baserte katalysatorer. Tolv eksperimenter ble utført i en to-reaktor rigg ved en rekke reaksjonsbetingelser, med formål om å innhente eksperimentell data til ... -
Fischer-Tropsch synthesis: Effect of CO conversion on CH4 and oxygenate selectivities over precipitated Fe-K catalysts
(Journal article; Peer reviewed, 2018)The explanation for CH4 selectivity for iron based Fischer-Tropsch catalysts in the low conversion region (i.e., <50%) remains elusive. In this contribution, the CO conversion effect was carefully examined over four K ... -
Fischer-Tropsch synthesis—Investigation of the deactivation of a Co catalyst by exposure to aerosol particles of potassium salt
(Journal article; Peer reviewed, 2018)The influence of potassium species on a Co based Fischer-Tropsch catalyst was investigated using an aerosol deposition technique. This way of poisoning the catalyst was chosen to simulate the actual potassium behaviour ... -
Fischer-tropsch: Product selectivity-the fingerprint of synthetic fuels
(Journal article; Peer reviewed, 2019)The bulk of the products that were synthesized from Fischer–Tropsch synthesis (FTS) is a wide range (C1–C70+) of hydrocarbons, primarily straight-chained paraffins. Additional hydrocarbon products, which can also be a ... -
Fischer–Tropsch Synthesis at High Conversions on Al2O3-Supported Co Catalysts with Different H2/CO Levels
(Journal article; Peer reviewed, 2017)Fischer-Tropsch experiments with different H2/CO ratios at high CO conversions have been carried out over an alumina-supported 20wt%Co-0.5wt%Re catalyst in a stainless steel fixed-bed reactor at 210 oC and 20 bar and with ... -
FlashRL: A Reinforcement Learning Platform for Flash Games
(Journal article; Peer reviewed, 2017)Reinforcement Learning (RL) is a research area that has blossomed tremendously in recent years and has shown remarkable potential in among others successfully playing computer games. However, there only exists a few game ... -
Flocculants in produced water
(Master thesis, 2020)Produsert vann som det viktigste biproduktet av leting etter olje og gass inneholder høye mengder olje som ikke er trygt for avhending i vannmiljøet. Med det økende behovet for olje og gass over hele kloden, er et av de ... -
Flocculation-on-a-chip: produced water studied by advanced microfluidic methods
(Master thesis, 2020)Produsert vann, bestående av dispergert olje, er et betydelig biprodukt fra oljeproduksjonen. Det er viktig å fjerne den dispergerte oljen fra det produserte vannet før det kan tømmes ut eller reinjiseres, og det produserte ... -
Flow Behaviour of Water-in-North Sea Acidic Crude Oil Emulsions and Preparation of Synthetic Reference Acidic Oils and Their Emulsions
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:259, Doctoral thesis, 2010)Two phase liquid-liquid flow is described as the concurrent flow of two immiscible liquids, encountered widely in the petroleum industry during the production and transportation of oil and water. Good estimations of ... -
Flow Improvers for Heavy Crude Oil Transport in Pipe
(Master thesis, 2014)The transportation of heavy oil is challenging as the oil has high viscosity and heavy components like asphaltenes. By finding an effective flow improver the transporting could be less demanding and more cost effective. ... -
Fluid Particle Coalescence: Film Drainage Modeling Including the Effect of Surface Rheology
(Doctoral theses at NTNU;2021:292, Doctoral thesis, 2021)Coalescence of fluid particles is an important phenomenon that plays a significant role in a wide range of natural and industrial processes. This work focuses on the film drainage models employed in coalescence modeling, ... -
Fluoride Adsorption On Iron Hydroxide Oxide Pricipitates During Zinc Prodcuction
(Master thesis, 2017)In the zinc smelters at Boliden Odda, the zinc is extracted from the purified zinc sulphate solution by electrowinning. If the purified zinc sulphate contains more than 35 mg/L fluoride, the extracted zinc cannot be removed ...