Ultrasound intensify CO2 desorption from pressurized loaded monoethanolamine solutions. II. Optimization and cost estimation

acceptedVersio

Ultrasound intensified CO2 desorption from pressurized loaded monoethanolamine solutions. I. parameters investigation and modelling

CO2 stripping from loaded monoethanolamine (MEA) aqueous solutions intensified by means of ultrasound was investigated in a lab-scale kettle reboiler with both gas and liquid continuous operations. The reboiler operating conditions were similar to those of a typical industrial reboiler with a pressure of 1 barg, and where the CO2 loading is less than 0.25 mol CO2/mol MEA. Intermittent ultrasound application was tested to find the effects of variables for CO2 stripping from the CO2 loadings 0.20–0.39 mol/mol at pressures up to 1.5 barg. Multi-variate data analysis was employed, and a model was built to explain and find the effects of six variables on CO2 stripping by ultrasound. The six variables include pressure, liquid flow rate, CO2 loading, intensity, frequency and on-stream time of ultrasound. The variable analysis results manifest that the CO2 loading is the significant positive effect variable, pressure is negative on energy saving and CO2 stripping rate and ultrasound parameters have varied effects. Experimental results show that the CO2 stripping rate assisted by ultrasound is 4 times than by heat only when CO2 loading is high, and the best result of specific energy consumption was 2.3 MJ/kg CO2 in the present test conditions

Ultrasound intensified CO2 desorption from pressurized loaded monoethanolamine solutions. I. parameters investigation and modelling

CO2 stripping from loaded monoethanolamine (MEA) aqueous solutions intensified by means of ultrasound was investigated in a lab-scale kettle reboiler with both gas and liquid continuous operations. The reboiler operating conditions were similar to those of a typical industrial reboiler with a pressure of 1 barg, and where the CO2 loading is less than 0.25 mol CO2/mol MEA. Intermittent ultrasound application was tested to find the effects of variables for CO2 stripping from the CO2 loadings 0.20–0.39 mol/mol at pressures up to 1.5 barg. Multi-variate data analysis was employed, and a model was built to explain and find the effects of six variables on CO2 stripping by ultrasound. The six variables include pressure, liquid flow rate, CO2 loading, intensity, frequency and on-stream time of ultrasound. The variable analysis results manifest that the CO2 loading is the significant positive effect variable, pressure is negative on energy saving and CO2 stripping rate and ultrasound parameters have varied effects. Experimental results show that the CO2 stripping rate assisted by ultrasound is 4 times than by heat only when CO2 loading is high, and the best result of specific energy consumption was 2.3 MJ/kg CO2 in the present test conditions.acceptedVersio

SubSea Dispersant lnjection (SSDI)- a "state of the art" and the need for further documentations

The aim of this pre-project has been to give a "State-of the art" and describe the R&D challenges and documentation needed in order to perform robust NEBA (Net Environmental Benefit Analysis) where SubSea Dispersant Injection (SSDI) is included as an acceptable countermeasure option. In spill scenarios where such NEBA assessments show that SSDI is an appropriate response option, this should be included in the operator's emergency response plans for the specific location on the Norwegian Continental Shelf (NCS). SSDI is a response technology that has a potential to be used in connection to subsea releases (blow-outs) from both "shallow" depth (500m). SSDI is considered as a "stand alone" countermeasure technique. The project has been a co-operation between SINTEF and Institute of Marine Research (IMR), and is a result of several scientific meetings with NOROG and individual oil companies. A focus has been on identifying documentation, relevant requirements and regulatory procedures (guidelines) needed as a basis for the national Authorities to consider SSDI as an operative oil spill response option according to present regulations for dispersant use in Norway. The identified gaps are taken into account the present findings from ongoing SSDI-related R&D projects (e.g. projects funded by the Research Council in Norway, API and IPIECA). This pre-project is recommending a R&D program / JIP over the coming 3 years (2016-2018) divided into 6 research areas (work packages) described in this report.publishedVersio

SubSea Dispersant lnjection (SSDI)- a "state of the art" and the need for further documentations

The aim of this pre-project has been to give a "State-of the art" and describe the R&D challenges and documentation needed in order to perform robust NEBA (Net Environmental Benefit Analysis) where SubSea Dispersant Injection (SSDI) is included as an acceptable countermeasure option. In spill scenarios where such NEBA assessments show that SSDI is an appropriate response option, this should be included in the operator's emergency response plans for the specific location on the Norwegian Continental Shelf (NCS). SSDI is a response technology that has a potential to be used in connection to subsea releases (blow-outs) from both "shallow" depth (500m). SSDI is considered as a "stand alone" countermeasure technique. The project has been a co-operation between SINTEF and Institute of Marine Research (IMR), and is a result of several scientific meetings with NOROG and individual oil companies. A focus has been on identifying documentation, relevant requirements and regulatory procedures (guidelines) needed as a basis for the national Authorities to consider SSDI as an operative oil spill response option according to present regulations for dispersant use in Norway. The identified gaps are taken into account the present findings from ongoing SSDI-related R&D projects (e.g. projects funded by the Research Council in Norway, API and IPIECA). This pre-project is recommending a R&D program / JIP over the coming 3 years (2016-2018) divided into 6 research areas (work packages) described in this report.publishedVersio