Browsing Institutt for kjemisk prosessteknologi by Title
Now showing items 588-607 of 1783
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Excess-Methane CO2 Reforming over Reduced KIT-6-Ni-Y Mesoporous Silicas Monitored by In Situ XAS–XRD
(Journal article; Peer reviewed, 2023)Making Europe less dependent on imported fuels requires a long-term strategy. Low-quality natural gas and biogas could be used to mitigate the energy crisis, and excess-methane dry reforming has the potential to upgrade a ... -
Exergy Analysis of a Process Converting Power and Biomass to a Liquid Fuel
(Journal article; Peer reviewed, 2019)A power and biomass to liquid process (PBtL) via Fischer-Tropsch synthesis is exergetically analysed. Synthesis gas is generated through an entrained flow gasifier and extra hydrogen is produced through high temperature ... -
Experimental and Modeling Studies of Fermentative Butanol Production from Lignocellulosic Sugars
(Doctoral theses at NTNU;2019:378, Doctoral thesis, 2019)The primary focus of the work performed and summarized in this thesis was to understand and improve anaerobic fermentation of lignocellulosic sugars for butanol production by Clostridia. Experimental studies form the basis ... -
Experimental and Numerical Investigations of Liquid Fragmentation and Droplet Generation for Gas Processing at High Pressures
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:111, Doctoral thesis, 2010)Liquid fragmentation and droplet behaviour was experimentally and numerically studied within this thesis. In the numerical part, a generic transport equation was derived from the Boltzmann equation and was used to extend ... -
Experimental and Numerical Results of a Non-DLE Aeroderivative GT Combustion System Burning Methane-Ammonia Blends at Intermediate Pressures
(Chapter, 2023)Ammonia is considered as a practical hydrogen carrier, as it can be stored in liquid form at moderate pressures and temperatures and is commonly produced and transported today. Ammonia could be used directly as a Gas Turbine ... -
Experimental and numerical study of carbon dioxide mass transfer and kinetics in amine solutions
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:98, Doctoral thesis, 2012)In CO2 absorption processes large mass and heat transfer driving forces occur in several places, such as the bottom of absorber, water wash section and desorber. Mass transfer is a science that describes the relative motion ... -
Experimental and Theoretical Studies on Water-Added Thermal Processing of Model Biosyngas for Improving Hydrogen Production and Restraining Soot Formation
(Journal article; Peer reviewed, 2022)The upgrading of biosyngas to convert methane into syngas is a necessary step for hydrogen production from biomass. However, this process is highly energy-demanding. In this study, a model biosyngas containing H2, CH4, CO, ... -
Experimental and theoretical study on efficient CO2 absorption coordinated by molecules and ions of DBN and 1,2,4-triazole formed deep eutectic solvents
(Peer reviewed; Journal article, 2023)Deep eutectic solvents (DESs) as a new class of designer solvents have attracted intensive attention in CO2 capture, while the interactions between CO2 and underlying molecules and/or ions in DESs are poorly understood. ... -
Experimental Assessment of the Environmental Impact of Ethanolamine
(Chapter, 2021)The environmental impact of ethanolamine, a common amine for carbon dioxide capture, was experimentally investigated in laboratory scale microcosms. By exposing the plant-soil systems to varying amounts of ethanolamine, ... -
Experimental assessment of the oxidation inhibitor KI on fresh and pre-used amines
(Master thesis, 2021)Økningen i den globale overflatetemperaturen er et alvorlig verdensomspennende problem som kan føre til katastrofale konsekvenser. Antropogene karbondioksid (CO2) utslipp fra kraftverk som bruker fossilt drivstoff er en ... -
Experimental Bench-Scale Study on Cuttings-Bed Erosion in Horizontal Wells
(Peer reviewed; Journal article, 2022)Cuttings-beds formation while drilling wellbores is a common challenge, especially for horizontal wells, as drilled particles have higher area to be deposited and form cuttings-beds, which can cause several problems such ... -
Experimental characterization ofscrubber internals at low andelevated pressures
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:89, Doctoral thesis, 2012)Two typical scrubber internals are studied in this thesis, inlet vane and wire mesh pads. A total of 8 wire mesh pads were studied at low and high pressure conditions. The inlet vane was studied at high pressure. The ... -
Experimental data of co-crystals of Etravirine and L-tartaric acid
(Journal article; Peer reviewed, 2018)Etravirine is a drug used alongside other medication in the treatment of HIV and is a non-nucleoside reverse transcriptase inhibitor. It is a BCS class IV drug, having low solubility and high permeability (Drugbank, ... -
Experimental determination of VLE data for the MAPA-H2O-CO2 system and model representation using the e-NRTL framework
(Master thesis, 2013)There were performed VLE experiments for 2M and 5M MAPA at different temperatures and loadings. There was also performed pKa measurements for MAPA and DEEA. The results were used to make a model for the ternary MAPA-H2O-CO2 ... -
Experimental evidence of enhanced adsorption dynamics at liquid-liquid interfaces under electric field
(Journal article; Peer reviewed, 2020)In this work we investigate adsorption of surface active compounds at water-oil interface subjected to an electric field. A fluid system comprising a pendent water drop surrounded by an asphaltene-rich organic phase is ... -
Experimental investigation of droplet breakage in the oil-in-water emulsion in a stirred tank
(Master thesis, 2018)In the modern oil and gas industry, the amount of produced water becomes major issues as its production is increased, especially in the matured field. To dispose produced water to the sea or utilize it for re-injection ... -
Experimental investigation of inlet vane design and performance in hydrocarbon systems
(Journal article; Peer reviewed, 2019)Separation efficiencies for a scrubber inlet vane section was investigated using a natural gas hydrocarbon system at 20, 50 and 85 bars. Several design features were investigated such as diameter of inlet pipe, vane design, ... -
Experimental Investigation of Single Bubbles Rising in Stagnant Liquid: Statistical Analysis and Image Processing
(Peer reviewed; Journal article, 2021)Despite the large effort devoted to the study of single bubbles rising in a stagnant liquid, the complex phenomena involved have resulted in a large scatter in the terminal velocity. Providing new experimental data where ... -
Experimental Investigations of Single Oil Droplet Breakage in a Turbulent Water Flow
(Doctoral theses at NTNU;2021:340, Doctoral thesis, 2021)Multiphase flow and the transient behavior of the dispersed phase is important to numerous industrial applications. Predictive modeling of the dispersed phase would be beneficial in designing, for example, phase separation ... -
Experimental Observation of CO2 Dry-ice Behavior in an Evaporator/Sublimator
(Journal article; Peer reviewed, 2017)In the evaporator/sublimator process of CO2 (R744) ultra-low temperature cascade heat pump system, it is known, as a problem, that dry-ice blockage makes the system operation fail. The design of an expanding channel for ...