Browsing Institutt for kjemisk prosessteknologi by Subject "VDP::Technology: 500::Chemical engineering: 560"
Now showing items 1-20 of 84
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A multifluid-PBE model for reactive bubbly flow: Applied to biofuel production via the Fischer- Tropsch synthesis operated in a slurry bubble column
(Doktoravhandlinger ved NTNU;2018:291, Doctoral thesis, 2018)Summary of thesis: A multifluid-PBE model for reactive bubbly flow Although electricity is transforming the transportation sector, liquid fuels are believed to remain in demand in the near future. With the ... -
A Semi-Industrial Scale Process to Produce Carbon Membranes for Gas Separation
(Doctoral theses at NTNU;2019:296, Doctoral thesis, 2019)Carbon molecular sieve membranes (CMSMs) are thin carbon barriers, usually in the shape of a film or hollow fibre, that are capable of selectively transporting certain gases. CMSMs are prepared by the thermal decomposition, ... -
Advances in Optimisation and Machine Learning for Process Systems Engineering
(Doctoral theses at NTNU;2024:85, Doctoral thesis, 2024)Optimisation is a valuable tool in process systems engineering, and has been widely used in design, control, process identification and many other areas. This thesis proposes novel applications of optimisation, as well as ... -
Asphaltenes and Asphaltene model compounds: Adsorption, Desorption and Interfacial Rheology.
(Doctoral thesis at NTNU;2016:71, Doctoral thesis, 2016)There are numerous problems encountered during extraction, production, transportation and refining of crude oil. Most of these problems are typically oil-specific, meaning that they depend upon the source of the oil, and ... -
Bayesian Estimators for Bioprocess Monitoring Under Uncertainty
(Doctoral theses at NTNU;2023:128, Doctoral thesis, 2023)The simultaneous growing interest in the application of digital solutions and the use of biological organisms such as bacteria and yeasts for the production of chemicals, has increased the necessity to apply digital solutions ... -
Carbon Molecular Sieve Hollow Fiber Membranes for CO2 Removals
(Doctoral theses at NTNU;2020:401, Doctoral thesis, 2020)New technologies that are more energy efficient could, if applied in the large-scale CO2 removal process, reduce carbon dioxide emissions, and achieve a low-carbon future. Compared to traditional amine-based absorption, ... -
Catalysts for electrochemical conversion of CO2 in aqueous solutions
(Doctoral theses at NTNU;2017:82, Doctoral thesis, 2017)An artificial photosynthesis process can 1) utilise renewable energy from the sun, 2) facilitate convenient energy storage in chemical bonds, 3) supply feed-stock to the chemical industry, and 4) recycle CO2 in a CO2-neutral ... -
Catalytic oxidation of nitric oxide to nitrogen dioxide at industrial nitric acid production conditions
(Doctoral theses at NTNU;2024:267, Doctoral thesis, 2024) -
Catalytic oxidation of NO to NO2 for nitric acid production
(Doctoral theses at NTNU;2019:376, Doctoral thesis, 2019) -
Cellulose Nanofibrils as Paper Additive and Coating Material: Properties, Distribution and Interaction Effects
(Doctoral theses at NTNU;2018:115, Doctoral thesis, 2018)Cellulose is well-known as the most common bio-polymer on earth. In the cell wall of most plants, it is organized in nanoscopic structures with interesting properties for a wide range of applications, among them as an ... -
Cellulose nanofibrils as rheology modifiers and stabilizers in food systems
(Doctoral theses at NTNU;2020:291, Doctoral thesis, 2020)Food additives are components used in many food products to improve qualities such as flavor, appearance or texture. In low-fat and non-fat food products, food additives called fat-replacers are added to the food products ... -
Chemical Modification of Paraffin Wax-Oil Gels
(Doctoral theses at NTNU;2019:222, Doctoral thesis, 2019)Paraffin wax crystallized in petroleum production line is well known in causing flow assurance challenges. Wax crystallization behavior is influenced by its interaction with other components co-exist in petroleum fluids. ... -
Co(11-20) and Pd3Au(100) single crystals as catalyst model systems
(Doctoral theses at NTNU;2017:372, Doctoral thesis, 2017)The work in this thesis was carried out with the overall goal to investigate surface dynamics of model catalyst surfaces. Single crystals were utilized as model systems, namely Co(11-20) and Pd3Au(100). The Co(11-20) ... -
CO2 Capture by Chemical Absorption: Kinetics and Combined Heat and Mass Transfer
(Doctoral theses at NTNU;, Doctoral thesis, 2017)Currently, global warming is an alarming issue. Tremendous efforts are being made in the research area to develop new and improved CO2 capture technologies in recent years. Many small-scale pilot test rigs and semi-industrial ... -
Combination of ionic liquids with membrane technology: a new approach for CO2 separation
(Doctoral thesis at NTNU;2016:91, Doctoral thesis, 2016)The objective of this PhD study is to combine the advantages of membrane and ILs technologies to develop high-performance IL-based membrane contactors and membranes for CO2 separation from various sources. First of all, ... -
Combined Hydrogen Sulfide Removal and Hydrate Control for Subsea Application: Characterization of Selected Blends
(Doctoral theses at NTNU;2020:209, Doctoral thesis, 2020)After more than a century of oil and gas exploration, fewer and fewer easily accessible reservoirs are available. In order to meet the increasing energy demands, the industry has extended its exploration activities in ... -
Conceptual Design and Techno- Economic Analysis of Biomass to Liquid Processes
(Doctoral theses at NTNU;2022:334, Doctoral thesis, 2022)There is a need for diversifying energy resources for better energy security. Moreover, diversification is critical in reducing the dependency on fossil fuels and subsequent carbon emissions. The thesis outlines Biomass ... -
Control Degrees of Freedom for Optimal Operation and Extending Remaining Useful Life
(Doctoral theses at NTNU;2020:188, Doctoral thesis, 2020)While the transition to renewable energy sources is happening faster than ever, traditional energy sources such as oil and gas still make up a large part of the energy portfolio, and will continue to do so for many years ... -
Coordinated Feedback-optimizing Control for Large Scale Processes - with applications of field-wide oil & gas production system
(Doctoral theses at NTNU;2024:256, Doctoral thesis, 2024)This thesis proposes optimization strategies for large-scale process systems, such as those found in oil and gas production, characterized by diverse subprocesses and constraints. This can be achieved by utilizing real-time ... -
Corrosion and degradation in amine based post-combustion CO2 capture
(Doctoral thesis at NTNU;2016:98, Doctoral thesis, 2016)Consumption of coal is expanding, and without CO2 capture and storage (CCS) or some other advanced coal combustion system, the most emission intensive gas, CO2, will continue to worsen climate change. Among the various ...