The Experts below are selected from a list of 645 Experts worldwide ranked by ideXlab platform
Dickinson Jillian - One of the best experts on this subject based on the ideXlab platform.
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Development of a process model for the prediction of Absorbent Degradation during CO₂ capture
2017Co-Authors: Dickinson JillianAbstract:Fossil fuels are used widely for energy production and are likely to continue to play a major role world wide for many years to come. Much work has been done on the technology for capturing CO₂ from gaseous industrial e ffluent. For large-scale applications like coal or natural gas-fired power plants, using amine solvents to capture post-combustion CO₂ is the most mature CO₂ capture technology. This technique can be used to retro fit existing plants by treating the flue gas after combustion. This thesis contains a dynamic mathematical model for the absorber column that can be used to include more detailed reaction chemistry for the absorption of CO₂ into an amine in the presence of O₂ as it becomes available. The dynamic model is constructed from first principles and, while it is built using MEA as the Absorbent to remove CO₂, it can be adjusted to cater for the removal of different industrial gases with various Absorbents. The model is solved using a commercial solver, MATLAB Ode15s when reduced to a system of ODE's by finite difference in the spatial dimension. The flux of MEA, CO₂, O₂ and H₂O across the phase interface in either direction has been included and more components can be added as required. The loss of MEA through oxidative Degradation has been quantified which is currently not available using commercial packages. Reaction rate kinetics have been employed to predict the accumulation of oxidation products which is limited by the incomplete knowledge of the dominant reactions between O₂ and MEA. When research has produced more detailed information about the products formed during this oxidation, it can be inserted easily into the model. Validation has been performed using data from the CSIRO PCC pilot plant at AGL Loy Yang. A limited parametric study of the impact of operating conditions on oxidation was performed
Jillian Dickinson - One of the best experts on this subject based on the ideXlab platform.
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development of a process model for the prediction of Absorbent Degradation during co capture
Bulletin of The Australian Mathematical Society, 2016Co-Authors: Jillian DickinsonAbstract:Fossil fuels are used widely for energy production and are likely to continue to play a major role world wide for many years to come. Much work has been done on the technology for capturing CO₂ from gaseous industrial e ffluent. For large-scale applications like coal or natural gas-fired power plants, using amine solvents to capture post-combustion CO₂ is the most mature CO₂ capture technology. This technique can be used to retro fit existing plants by treating the flue gas after combustion. This thesis contains a dynamic mathematical model for the absorber column that can be used to include more detailed reaction chemistry for the absorption of CO₂ into an amine in the presence of O₂ as it becomes available. The dynamic model is constructed from first principles and, while it is built using MEA as the Absorbent to remove CO₂, it can be adjusted to cater for the removal of different industrial gases with various Absorbents. The model is solved using a commercial solver, MATLAB Ode15s when reduced to a system of ODE's by finite difference in the spatial dimension. The flux of MEA, CO₂, O₂ and H₂O across the phase interface in either direction has been included and more components can be added as required. The loss of MEA through oxidative Degradation has been quantified which is currently not available using commercial packages. Reaction rate kinetics have been employed to predict the accumulation of oxidation products which is limited by the incomplete knowledge of the dominant reactions between O₂ and MEA. When research has produced more detailed information about the products formed during this oxidation, it can be inserted easily into the model. Validation has been performed using data from the CSIRO PCC pilot plant at AGL Loy Yang. A limited parametric study of the impact of operating conditions on oxidation was performed.
Westermark Mats - One of the best experts on this subject based on the ideXlab platform.
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CO2 capture pilot test at a pressurized coal fired CHP plant
Elsevier Ltd., 2009Co-Authors: Bryngelsson Mårten, Westermark MatsAbstract:AbstractCO2 capture from pressurized flue gas using a variation of the hot potassium carbonate process has been demonstrated at a pilot plant with authentic flue gas from the Värtan combined heat and power plant in Stockholm. The plant has served as a proof of concept installation, and has confirmed that: (i) the pre-treatment of the flue gas is adequate for protecting the Absorbent from Degradation, (ii) the CO2 capture efficiency is high (>98%), (iii) no harmful components are fed to the gas turbine, and (iv) Absorbent Degradation is low (0.85 mole percent/month)
Bryngelsson Mårten - One of the best experts on this subject based on the ideXlab platform.
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CO2 capture pilot test at a pressurized coal fired CHP plant
Elsevier Ltd., 2009Co-Authors: Bryngelsson Mårten, Westermark MatsAbstract:AbstractCO2 capture from pressurized flue gas using a variation of the hot potassium carbonate process has been demonstrated at a pilot plant with authentic flue gas from the Värtan combined heat and power plant in Stockholm. The plant has served as a proof of concept installation, and has confirmed that: (i) the pre-treatment of the flue gas is adequate for protecting the Absorbent from Degradation, (ii) the CO2 capture efficiency is high (>98%), (iii) no harmful components are fed to the gas turbine, and (iv) Absorbent Degradation is low (0.85 mole percent/month)
Edmond I. Eger - One of the best experts on this subject based on the ideXlab platform.
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the pharmacology of inhaled anesthetics
Seminars in Anesthesia Perioperative Medicine and Pain, 2005Co-Authors: Edmond I. EgerAbstract:The two most popular potent inhaled anesthetics, desflurane and sevoflurane, differ in pharmacological advantages and disadvantages in sometimes subtle and sometimes obvious ways. Sevoflurane has a low solubility and absent pungency that makes it easy to use and is the anesthetic of choice for an inhalational induction of anesthesia. It does not stimulate the circulation. In contrast, concentrations exceeding 6% desflurane can cause airway irritation and circulatory stimulation, especially early in anesthesia. Desflurane requires a greater educational investment to deal with these issues. The lower solubility of desflurane (half that of sevoflurane) allows a faster recovery, often an earlier time to PACU discharge, and an earlier restoration of adequate ventilation and control of protective pharyngeal reflexes. Desflurane’s resistance to Degradation by normal Absorbents allows its use at low inflow rates (eg, 500 mL/min), whereas sevoflurane must be used at inflow rates of 1 L/min or more (2 L/min after 2 MAC-hours). Higher inflow rates increase cost. Desiccated Absorbent Degradation of sevoflurane (but not desflurane) can result in high temperatures and fires. Desiccated Absorbents degrade both anesthetics to carbon monoxide, more with desflurane. Sevoflurane, but not desflurane, can cause convulsions. Desflurane and sevoflurane share several desirable attributes. Both may be used with laryngeal mask airways with minimal evidence of airway irritation during maintenance of anesthesia in either smokers or nonsmokers. Organ toxicity is unremarkable. Both may protect vital organs by “anesthetic preconditioning” (APC). In animals, APC with desflurane may provide greater myocardial protection against hypoxia, but in humans, desflurane and sevoflurane appear to be equally protective. Because both are halogenated solely with fluorine, neither materially affects the ozone layer.
