In order to reduce CO 2 emissions on a global scale large pilot and demonstration projects that t... more In order to reduce CO 2 emissions on a global scale large pilot and demonstration projects that trial new technologies, designs, or construction techniques applicable to full scale plants need to be undertaken. Process Group has designed and built several pilot scale capture plants including one located at the Hazelwood Power Station, which is the largest capture plant on a coal fired power station in Australia. This paper discusses some of the lessons from these pilot plants and presents a new retrofit postcombustion study that investigates carbon capture from a 500MW power station (nominally 3.7 million tpa CO 2 ) using three solvents with and without heat integration into the steam cycle. Data pertaining to processing 25% of the flue gas from a 500MW power station (nominally 0.9 million tpa CO 2 ) is also presented.
The effect of continuous-phase rheology on the coalescence time of single water drops at an organ... more The effect of continuous-phase rheology on the coalescence time of single water drops at an organicraqueous interface was in®estigated experimentally. For Newtonian fluids, the coalescence time increases monotonically with the continuous-phase ®iscosity at a fixed drop diameter and with the drop diameter at a fixed continuous-phase ®iscosity. Elasticity in the continuous phase caused significant increases in the coalescence times for drops of less than 1 mm diameter in the systems studied, but had no discernible effect on the coalescence of larger drops. Estimates of the interfacial shear rates were used to demonstrate that the elasticity of the continuous phase becomes significant in the coalescence process as the drop size decreases. These results indicate that emulsion stability may be increased without the use of surfactants by adding a suitable polymer to the continuous phase and control of the dispersed-phase drop size.
The effect of the addition of various additives on the kinetics of cobalt removal and zinc-dust d... more The effect of the addition of various additives on the kinetics of cobalt removal and zinc-dust dissolution in an industrial zinc electrolyte solution during cementation was investigated. Optimum cobalt removal with minimal zinc-dust dissolution occurs at 858C with the addition of 15 mgrL copper, 10 mgrL cadmium and 2 mgrL antimony, using 3.5 grL zinc dust. It was determined that tin could substitute antimony, but a substantially greater concentration of tin is required for adequate cobalt removal. At temperatures 85-908C, the amount of dissolved zinc dust was always less than 10% of the initially-added zinc dust, but increased up to 80% at 958C. For different additive combinations, there was no effect on zinc-dust dissolution.
In order to reduce CO 2 emissions on a global scale large pilot and demonstration projects that t... more In order to reduce CO 2 emissions on a global scale large pilot and demonstration projects that trial new technologies, designs, or construction techniques applicable to full scale plants need to be undertaken. Process Group has designed and built several pilot scale capture plants including one located at the Hazelwood Power Station, which is the largest capture plant on a coal fired power station in Australia. This paper discusses some of the lessons from these pilot plants and presents a new retrofit postcombustion study that investigates carbon capture from a 500MW power station (nominally 3.7 million tpa CO 2 ) using three solvents with and without heat integration into the steam cycle. Data pertaining to processing 25% of the flue gas from a 500MW power station (nominally 0.9 million tpa CO 2 ) is also presented.
The effect of continuous-phase rheology on the coalescence time of single water drops at an organ... more The effect of continuous-phase rheology on the coalescence time of single water drops at an organic/aqueous interface was investigated experimentally. For Newtonian fluids, the coalescence time increases monotonically with the continuous-phase viscosity at a fixed drop diameter and with the drop diameter at a fixed continuous-phase viscosity. Elasticity in the continuous phase caused significant increases in the coalescence times for drops of less than 1 mm diameter in the systems studied, but had no discernible effect on the coalescence of larger drops. Estimates of the interfacial shear rates were used to demonstrate that the elasticity of the continuous phase becomes significant in the coalescence process as the drop size decreases. These results indicate that emulsion stability may be increased without the use of surfactants by adding a suitable polymer to the continuous phase and control of the dispersed-phase drop size.
In order to reduce CO 2 emissions on a global scale large pilot and demonstration projects that t... more In order to reduce CO 2 emissions on a global scale large pilot and demonstration projects that trial new technologies, designs, or construction techniques applicable to full scale plants need to be undertaken. Process Group has designed and built several pilot scale capture plants including one located at the Hazelwood Power Station, which is the largest capture plant on a coal fired power station in Australia. This paper discusses some of the lessons from these pilot plants and presents a new retrofit postcombustion study that investigates carbon capture from a 500MW power station (nominally 3.7 million tpa CO 2 ) using three solvents with and without heat integration into the steam cycle. Data pertaining to processing 25% of the flue gas from a 500MW power station (nominally 0.9 million tpa CO 2 ) is also presented.
The effect of continuous-phase rheology on the coalescence time of single water drops at an organ... more The effect of continuous-phase rheology on the coalescence time of single water drops at an organicraqueous interface was in®estigated experimentally. For Newtonian fluids, the coalescence time increases monotonically with the continuous-phase ®iscosity at a fixed drop diameter and with the drop diameter at a fixed continuous-phase ®iscosity. Elasticity in the continuous phase caused significant increases in the coalescence times for drops of less than 1 mm diameter in the systems studied, but had no discernible effect on the coalescence of larger drops. Estimates of the interfacial shear rates were used to demonstrate that the elasticity of the continuous phase becomes significant in the coalescence process as the drop size decreases. These results indicate that emulsion stability may be increased without the use of surfactants by adding a suitable polymer to the continuous phase and control of the dispersed-phase drop size.
The effect of the addition of various additives on the kinetics of cobalt removal and zinc-dust d... more The effect of the addition of various additives on the kinetics of cobalt removal and zinc-dust dissolution in an industrial zinc electrolyte solution during cementation was investigated. Optimum cobalt removal with minimal zinc-dust dissolution occurs at 858C with the addition of 15 mgrL copper, 10 mgrL cadmium and 2 mgrL antimony, using 3.5 grL zinc dust. It was determined that tin could substitute antimony, but a substantially greater concentration of tin is required for adequate cobalt removal. At temperatures 85-908C, the amount of dissolved zinc dust was always less than 10% of the initially-added zinc dust, but increased up to 80% at 958C. For different additive combinations, there was no effect on zinc-dust dissolution.
In order to reduce CO 2 emissions on a global scale large pilot and demonstration projects that t... more In order to reduce CO 2 emissions on a global scale large pilot and demonstration projects that trial new technologies, designs, or construction techniques applicable to full scale plants need to be undertaken. Process Group has designed and built several pilot scale capture plants including one located at the Hazelwood Power Station, which is the largest capture plant on a coal fired power station in Australia. This paper discusses some of the lessons from these pilot plants and presents a new retrofit postcombustion study that investigates carbon capture from a 500MW power station (nominally 3.7 million tpa CO 2 ) using three solvents with and without heat integration into the steam cycle. Data pertaining to processing 25% of the flue gas from a 500MW power station (nominally 0.9 million tpa CO 2 ) is also presented.
The effect of continuous-phase rheology on the coalescence time of single water drops at an organ... more The effect of continuous-phase rheology on the coalescence time of single water drops at an organic/aqueous interface was investigated experimentally. For Newtonian fluids, the coalescence time increases monotonically with the continuous-phase viscosity at a fixed drop diameter and with the drop diameter at a fixed continuous-phase viscosity. Elasticity in the continuous phase caused significant increases in the coalescence times for drops of less than 1 mm diameter in the systems studied, but had no discernible effect on the coalescence of larger drops. Estimates of the interfacial shear rates were used to demonstrate that the elasticity of the continuous phase becomes significant in the coalescence process as the drop size decreases. These results indicate that emulsion stability may be increased without the use of surfactants by adding a suitable polymer to the continuous phase and control of the dispersed-phase drop size.
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Papers by Trina Dreher