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Demonstration of non-linear model predictive control for optimal flexible operation of a CO2 capture plant
(Peer reviewed; Journal article, 2022)Due to the penetration of renewable intermittent energy, there is a need for coal and natural gas power plants to operate flexibly with variable load. This has resulted in an increasing interest in flexible and operational ... -
Demonstration of non-linear model predictive control of post-combustion CO2 capture processes
(Journal article; Peer reviewed, 2019)Nonlinear model predictive control applications have been deployed on two large pilot plants for post combustion CO2 capture. The control objective is formulated in such a way that the CO2 capture ratio is controlled at a ... -
Demulsification of Crude Oil Emulsions Tracked by Pulsed Field Gradient (PFG) Nuclear Magnetic Resonance (NMR). Part I: Chemical Demulsification
(Journal article; Peer reviewed, 2019)Emulsified water droplets must be extracted from crude oil for economical and transport purposes, which is achievable by chemical demulsification. Four different chemicals were tested on water-in-crude oil emulsions using ... -
Demulsification of crude oil emulsions tracked by pulsed field gradient NMR. Part II: Influence of chemical demulsifiers in external AC electric field
(Journal article; Peer reviewed, 2020)Crude oil emulsions can reach stability levels that pose severe challenges for the processing industry. Certain conventional methods are used to deal with these challenges, such as chemical demulsification. In this article, ... -
Demulsifier assisted film thinning and coalescence in crude oil emulsions under DC electric fields
(Journal article, 2018)Electrocoalescence has been considered a most efficient method of crude oil dewatering; however, just electric fields are not enough when dealing with heavy crude oils. In this workwe studied effect of asphaltene flocculation ... -
Dense integration of solvent-free electrodes for Li-ion supercabattery with boosted low temperature performance
(Peer reviewed; Journal article, 2020)Supercabatteries combine the advantages of high power and energy density performances. However, the electrodes are always fabricated using high surface area materials and traditional slurry coating method containing the ... -
Densified Pellets from Scandinavian Forest Residues: A Study on Torrefaction and Pellet Characteristics
(Master thesis, 2011)The aim of this project has been to investigate various aspects of the pre-treatment method torrefaction (biomass type, temperature, time (H-factor) and solid yield), and certain parameters (particle size distribution, ... -
Densities, Viscosities of Pure 1-(2-Hydroxyethyl) Pyrrolidine, 3-Amino-1-Propanol, Water, and Their Mixtures at 293.15 to 363.15 K and Atmospheric Pressure
(Peer reviewed; Journal article, 2023)Densities and viscosities of pure 1-(2-hydroxyethyl) pyrrolidine, 3-amino-1-propanol, water, and their blends’ data are reported from 293.15 to 363.15 K and at ambient pressure. Densities of pure water show higher values ... -
Densities, Viscosities of Pure 1‑(2-Hydroxyethyl) Pyrrolidine, 3‑Amino-1-Propanol, Water, and Their Mixtures at 293.15 to 363.15 K and Atmospheric Pressure
(Peer reviewed; Journal article, 2023)Densities and viscosities of pure 1-(2-hydroxyethyl) pyrrolidine, 3-amino-1-propanol, water, and their blends’ data are reported from 293.15 to 363.15 K and at ambient pressure. Densities of pure water show higher values ... -
Density and Viscosity for the Non-aqueous and Aqueous Mixtures of Methyldiethanolamine and Monoethylene Glycol at Temperatures from 283.15 K to 353.15 K
(Journal article; Peer reviewed, 2020)Nonaqueous and aqueous mixtures of methyldiethanolamine and monoethylene glycol form promising absorbents for the combined hydrogen sulfide removal and hydrate control, necessary in natural gas processing. In this direction, ... -
Density calculations of aqueous amine solutions using an excess Gibbs based model
(Peer reviewed; Journal article, 2019)Accurate representation of the physical properties of a solvent is essential for design and simulation of processes. Density and viscosity, for instance, have an important role in modelling and designing absorption and ... -
Density Functional Theory-Assisted Microkinetic Analysis of Methane Dry Reforming on Ni Catalyst
(Journal article; Peer reviewed, 2015)A comprehensive microkinetic model based on density functional theory (DFT) calculations is constructed to explore the reaction mechanism for dry methane reforming on Ni catalyst. Three low-index facets, namely, Ni(111), ... -
Describing CO2-Absorbent Properties in AspenPlus
(Journal article; Peer reviewed, 2019)For the modelling of novel solvent systemsfor CO2-capture in AspenPlus®, data fitting of physical-chemical properties is needed. In this work the challenges and results are presented for fitting such experimental data for ... -
Description of Supercritical Water-Hydrocarbon Systems
(Dr. ingeniøravhandling, 0809-103X; 2001:53, Doctoral thesis, 2001)Water +n-alkane systems at high pressures and temperatures, including the critical region, have been studied and modeled. All fluids exhibit fascinating behaviour near the critical point. Thus, the thesis begins with a ... -
Design and operation of asubsea system
(Master thesis, 2009) -
Design and operation of water-wash sections to minimize MEA emissions
(Journal article, 2022)Whether in gaseous or aerosol form, mitigation of emissions from absorption-based carbon capture remains a real challenge. Among the available control technologies, water-wash is one of the most conventional and has been ... -
Design and setup optimization of ex-situ catalytic up-gradation of renewable biomass into fuel range hydrocarbons
(Master thesis, 2020)De raskt utarmende fossile brennstoffreservene og miljøpåvirkningen banet banen for alternative fornybare ressurser. Biodrivstoff skildrer en attraktiv mulighet til å erstatte konvensjonelle fossile brensler. Dette fører ... -
Design and simulation of dividing wall column for ternary heterogeneous distillation
(Master thesis, 2014)Heterogeneous azeotropic distillation is routinely used in chemical industry to separate close boiling point mixtures and azeotropes, which are not easily separated in a normal distillation process. Dividing wall column ... -
Design configurations of the methanol synthesis loop
(Master thesis, 2011)In recent years the chemical industry has undergone considerable changes due to increased environmental regulations and energy costs. This master thesis has evaluated three different design considerations of the methanol ...