Institutt for prosess-, energi- og miljøteknologi: Nye registreringer
Viser treff 201-220 av 338
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Low temperature methanol synthesis catalyzed by copper nanoparticles
(Journal article; Peer reviewed, 2017)A one pot catalytic system which involves Cu and an alkoxide co-catalyst has been used for methanol (MeOH) synthesis at low temperature. Up to about 92% syngas conversion per pass and more than 90% selectivity to MeOH ... -
CO2 Capture by Aqueous 3-(Methylamino)propylamine in Blend with Tertiary Amines: An NMR Analysis
(Journal article; Peer reviewed, 2017)Aqueous 3-(Methylamino) propylamine (MAPA) in blend with 2-(Diethylamino) ethanol (DEEA) and other tertiary amines, which mainly differ from DEEA in the number of hydroxyl functions (-OH) and/or in the length and structure ... -
Gamma densitometry measurements of gas/liquid flow with low liquid fractions in horizontal and inclined pipes
(Journal article; Peer reviewed, 2018)The ability to accurately predict the volume fraction of different phases flowing in a pipe is of extreme importance to nuclear and oil industries, among others. This article will focus on the application of a single-beam ... -
Particle image velocimetry measurements of stratified gas-liquid flow in horizontal and inclined pipes
(Journal article; Peer reviewed, 2018)The main objectives of this work is to produce detailed velocity profile measurements over a range of operating conditions of two phase gas/liquid flow with low liquid fractions in horizontal and inclined pipes. The ... -
Stepwise Analysis Of Gasification Reactions With Aspen Plus And Cpfd
(Journal article; Peer reviewed, 2017)The energy from biomass can be utilized through the thermochemical conversion processes of pyrolysis and gasification. Biomass such as wood chips is heated in a gasification reactor to produce a synthesis gas containing ... -
Distribution Of Co2 In Fractured Carbonate Reservoirs
(Journal article; Peer reviewed, 2017)Deep geologic injection of supercritical carbon dioxide (CO 2 ) for enhanced oil recovery (EOR) has been widely used for improved oil recovery from depleted oilfields since early 1970s. The CO 2 injec - tion maintains the ... -
Effects of N/S Molar Ratio on Product Formation in Psychrophilic Autotrophic Removal of Sulfide
(Journal article; Peer reviewed, 2017) -
Hva koster egentlig CO2-håndtering?
(Journal article; Peer reviewed, 2011) -
Wave Front Tracking using Template Matching and Segmented Regression
(Peer reviewed; Journal article, 2017)An experimental study was designed to measure shock waves (supersonic gas flow) in a shock tube. A high-speed camera captured images of the shock waves, at a framerate up to 500,000 frames per second. with respect to the ... -
Experimental Study and CFD Modelling of Minimum Fluidization Velocity for Geldart A, B and D Particles
(Journal article; Peer reviewed, 2017)The aim of this study is to determine minimum fluidization velocity of three different particles which represent different Geldart classification groups and to compare the results with computational results. The experiments ... -
Surface tension of alkanolamine solutions: an experimentally based review
(Journal article; Peer reviewed, 2017) -
Simulation and Economic Optimization of Vapour Recompression Configuration for Partial CO2 capture
(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 ... -
Flow regime changes at hydraulic jumps in an open Venturi channel for Newtonian fluid
(Journal article; Peer reviewed, 2017) -
Euler-Granular Approach for Modelling of Dilute Phase Pneumatic Conveying in a Vertical Pipe
(Journal article; Peer reviewed, 2017)In the present study, vertically upward dilute phase pneumatic conveying flow was predicted using Euler - Granular method. Three dimensional computational fluid dynamics simulations were carried out for an 8 m long and ... -
Optimization of gas velocity and pressure drop in CO2 absorption column
(Journal article; Peer reviewed, 2017)For a traditional amine-based CO2 capture system, the absorber column accounts for a significant part of the overall capital- and operating cost. One important design factor of absorber columns is the gas velocity through ... -
Modeling N/S ratio and temperature effects in simultaneous biological denitrification and sulfide oxidation
(Journal article; Peer reviewed, 2017)A model describing the simultaneous removal of NO3- and HS- by microorganisms is presented here. The oxidation of HS- (electron donor) can be controlled by the appropriate dosage of NO3-. The developed model, which includes ... -
Evaluation of drag models for CFD simulation of fluidized bed biomass gasification
(Journal article; Peer reviewed, 2017)Gasification of biomass into suitable feedstock has become a feasible alternative technology for reducing the use of energy feedstock from fossil sources. Usually, fluidized bed technology is used in the biomass gasification ... -
Analyzing the effects of particle density, size, size distribution and shape for minimum fluidization velocity with Eulerian-Lagrangian CFD simulation
(Journal article; Peer reviewed, 2017)Fluidized bed reactor systems are widely used due to excellent heat and mass transfer characteristics followed by uniform temperature distribution throughout the reactor volume. The importance of fluidized beds is further ... -
Validation of results from Barracuda® CFD modelling to predict the minimum fluidization velocity and the pressure drop of Geldart A particles
(Journal article; Peer reviewed, 2017)Fluidization characteristics such as the minimum fluidization velocity and the bed pressure drop are important for the design of an efficient fluidized bed. These characteristics can be measured experimentally, but also ... -
Computational fluid dynamics study of flow depth in an open Venturi channel for Newtonian fluid
(Journal article; Peer reviewed, 2017)Open Venturi channel flow measurement could be a cheap method to be used in drill bit pressure control. The main objective of this study is to identify the factors related with the flow depth in an open Venturi channel. A ...