Blar i Institutt for kjemisk prosessteknologi på forfatter "Ma, Xiaoguang"
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Crystallization behavior of an X-Ray Contrast Agent Intermediate at high Supersaturations and Temperatures
Bakke, Bjørnar (Master thesis, 2016)This project comprises studies of crystallization of an aromatic amine, which is an intermediate in the production of the X-ray contrast agent Iohexol at GE Healthcare Lindesnes Site. Crystallizations from highly supersaturated ... -
The Effect of Alkalinity, Magnesium and Ferrous on the Precipitation of Calcium Carbonate at Pre-Treatment Conditions of Mono Ethylene Glycol
Nautnes, Ragnhild (Master thesis, 2016)Mono ethylene glycol (MEG) is used to prevent formation of gas hydrate in the pipes transporting natural gas. The MEG is regenerated in a closed MEG loop, where water and salts are removed. The divalent ions are harder to ... -
The Effect of Supersaturation and Additives on Calcium Carbonate Scaling at Mono Ethylene Glycol Pre-Treatment Conditions
Neteland, Marte (Master thesis, 2017)In this report the effect of supersaturation and additives on calcium carbonate scaling under mono ethylene glycol (MEG) pre-treatment conditions (T=80°C and 50 wt% MEG) have been studied. The additives used are magnesium ... -
Effects of Seeding on the Crystallization Behaviour and Filtration Abilities of an Aromatic Amine
Linga, Åsmund (Master thesis, 2017)One of the intermediates in the production of X-ray contrast agents at GE Healthcare Lindesnes, commonly referred to as an aromatic amine, is subject to a crystallization. Crystallization parameters such as size, size ... -
Liquid-solid Solubility in AMP-KSAR-CO2-H2O System
Aronu, Ugochukwu Edwin; Ma, Xiaoguang (Journal article; Peer reviewed, 2017)Solid-liquid solubility of an example novel precipitating solvent system (NPSS); an aqueous blend of AMP and KSAR with and without CO2 were studied to determine the crystallization and dissolution regimes as well as the ... -
Precipitation in Carbon Dioxide Capture Processes
Ma, Xiaoguang (Doktoravhandlinger ved NTNU, 1503-8181; 2014:137, Doctoral thesis, 2014)Climate change as a result of the greenhouse effect has become a global issue from both technical and political perspectives. Carbon dioxide (CO2), produced from fossil-fuelled power plants, gas sweetening processes and ... -
Simultaneous precipitation of Calcium Sulfate and Calcium Carbonate during MEG regeneration
Bache, Therese (Master thesis, 2016)Simultaneous precipitation of calcium carbonate and calcium sulfate in supersaturated solutions containing a MEG-water concentration containing 0, 50 or 90 wt% MEG, was investigated in a bath setup at constant pressure and ...