Blar i Fakultet for naturvitenskap (NV) på emneord "Chemical Engineering"
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Dynamic Extremum Seeking Control Using ARX model
(Master thesis, 2018)In the design of the dynamic ESC, a wave perturbation is decided to be not a sinusoidal wave but a pseudo-random binary sequence(PRBS) wave. The reason behind this is that diverse frequencies in the PRBS wave make the ARX ... -
Dynamic Simulation of Heat Exchanger with Multicomponent Phase Change
(Master thesis, 2017)A dynamic model for a heat exchanger with multicomponent phase change, part of reliquefaction cycle of natural gas, is developed. The finite control volume method is used to spatially discretize the heat exchange intro a ... -
Economic Plantwide Control for a Methanol Plant using Commercial Process Simulation Software
(Master thesis, 2014)It is desired to make the Economic Plantwide Control design procedure proposed by Skogestad (2000, 2004, 2012) available for engineers without deep knowledge of process control or optimization. The integration of the use ... -
The Effect of Crosslinking on the Physical Aging of PTMSP Membranes
(Master thesis, 2017)For post-combustion CO2 capture, membranes with high permeability and relatively high CO2/N2 selectivity are favoured to compete with the commercial amine-based absorption technology. With the highest known CO2 permeability, ... -
Effect of Solvent Composition on Solvent Properties of Non-Aqueous and Low Aqueous Solvents
(Master thesis, 2018)The high amounts of CO2 emissions can be minimized by applying Carbon Capture and Storage (CCS) technology. Chemical absorption with amines, or amine scrubbing, is one of the available technologies. In this technology, a ... -
Efficient catalysts for achieving NO /NO2 equilibrium
(Master thesis, 2016)The aim of this work was to characterize an alumina supported Pt catalyst before and after post- and pre-modification with WO3. A 2wt%Ru/Al2O3 and a WO3/ZrO2 catalyst were also characterized. Pt/Al2O3 with a loading of ... -
Environmental Stress Cracking of Interior Polymers used in the car
(Master thesis, 2018)The thesis project was about testing of polymers used in the interiors of the cars - ABS and PC/ABS for resistance to cracking due to environmental stress conditions. This includes testing cracking/crazing of the materials ... -
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 Study of CO2 Solubility in Ionic Liquids and Polyethylene Glycols
(Master thesis, 2015)The parameter of density, viscosity are tested and fitted with the result of solubility measurement. With series of experiments, this chemical blend is considered with a good effect. The mixture of 50% tetrabutylphosphonium ... -
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 ... -
Hot gas cleaning
(Master thesis, 2014)Five H2S adsorbent materials for hot gas cleaning of biomass-derived synthesis gas were prepared. Three of the new sorbents were prepared based on a novel manganese-based sorbent that uses alumina support. The new adsorbent ... -
Hydrogen production from biomass derived compounds by sorption enhanced reforming
(Master thesis, 2013)Sorption enhance steam reforming (SESR) is a technique which involves the integration of three reactions in one stage; namely steam reforming (SR), water gas shift (WGS) and CO2 sorption This project was developed to study ... -
Hydrolysis of Cellulose using Hybrid Catalysts
(Master thesis, 2016)Catalyst plays an important role in biomass conversion. The present work will deal with preparation, characterization and application in the cellulose conversion to chemicals. The work will focus on the functionalization ... -
Hydrotalcite Based Ni-Co Bi-metallic Catalysts for Steam Reforming of Methane
(Master thesis, 2016)Hydrotalcites or layered-double-hydroxides (LDH) are a class of nanostructured anionic clays. These compounds exhibit high surface areas, high thermal stability and uniform distribution of active metals. Different attempts ... -
HYSYS Modelling of a Horizontal Three-Phase Subsea Separator
(Master thesis, 2016)Subsea separators are very useful in the subsea for the separation of hydrocarbons and water. Its application has added value to the oil and gas industry as well as minimize the negative impacts of subsea operations on the ... -
Initial stages of metal dusting corrosion
(Master thesis, 2015)Metal dusting is a disintegration phenomenon of metals and alloys into fine, dust-like particles. Metal dusting can be found in different reforming units in the petrochemical industry. As well as in reforming units, it can ... -
Initial Stages of Metal Dusting Corrosion - Surface and subsurface investigation using SEM, Raman spectroscopy, and STEM
(Master thesis, 2018)Metal dusting (MD) is a corrosion phenomenon that often occurs in industrial processes involving syngas. Carbon deposited on vessel walls gradually causes disintegration of the bulk metal. Because MD is related to carbon ... -
INJECTION OF SYNTHETIC PRODUCED WATER INTO POROUS MEDIA - A study of transport of dispersed components through simulated reservoir packs
(Master thesis, 2018)Produced water(PW) contributes to the largest volume byproduct from the oil production industry. The presence of hazardous chemicals makes the handling of PW an important and costly operation. Methods such as discharge ... -
Interfacial characterisation of dispersed components in produced water
(Master thesis, 2012)While a number of studies have investigated the processes responsible for the decay of the interfacial tension between crude oil and water with time, there is a great need for an improved understanding of the mechanisms ... -
Interfacial Characterisation of Gas-Liquid Interfaces Related to Gas Flotation in Offshore Produced Water Treatment - Dynamic Adsorption of Heteroatoms
(Master thesis, 2014)Produced water is the largest waste stream produced in the recovery of oil and gas. The processing of produced water occurs in several stages including gas flotation. Gas flotation is separation by gravity and the effectiveness ...