The Experts below are selected from a list of 270 Experts worldwide ranked by ideXlab platform

Katrin Schaber - One of the best experts on this subject based on the ideXlab platform.

  • Effect of a gas-gas-heater on H2SO4 aerosol Formation: implications for Mist Formation in amine based carbon capture
    International Journal of Greenhouse Gas Control, 2015
    Co-Authors: Jan Mertens, Purvil Khakharia, Earl Goetheer, Bernd Schallert, R. Bruns, Nathalie Faniel, W. Albrecht, Julien Blondeau, Katrin Schaber
    Abstract:

    This study is to our knowledge the first to describe the effect of a Gas-Gas Heater (GGH) of a coal fired power plant's has on (i) the H2SO4 concentration and (ii) the particle/aerosol number concentration and particle size distribution present in the flue gas. In the absence of a GGH, homogenous nucleation takes places inside the Wet Flue Gas Desulphurisation (WFGD) converting the gaseous H2SO4 into aerosol H2SO4. This leads to a high aerosol number concentration behind the WFGD with 80% of the aerosols being smaller than 0.02 μm. This implies that an amine based carbon capture (CC) installation treating this flue gas can suffer from amine Mist Formation due to the high amount of available nuclei (i.e., H2SO4 aerosols) resulting in high amine emissions. In contrast, in the presence of a GGH not only 70% of the H2SO4 is removed from the flue gas (measured at the Nijmegen powerplant), but also homogenous nucleation in the WFGD is prevented resulting in low particle number concentrations. The flue gas leaving the GGH will not create any Mist Formation issues in an amine based CC installation due to the low amount of nuclei present in the flue gas. It is not the reduction in H2SO4 concentration by 70% inside the GGH as such that prevents Mist Formation but absence of H2SO4 in its aerosol form. These results are most likely quite widely transformable to other power plants that burn low sulfur coal i.e., around 0.7 weight%. This inFormation will serve future pilot and demo CC installation around the world; in particular when retrofitted on power plants that have a GGH.

  • A wet electrostatic precipitator (WESP) as countermeasure to Mist Formation in amine based carbon capture
    International Journal of Greenhouse Gas Control, 2014
    Co-Authors: Jan Mertens, C. Anderlohr, Purvil Khakharia, Peter Rogiers, L Brachert, Earl Goetheer, Katrin Schaber
    Abstract:

    This study is to our knowledge the first to evaluate the potential of a wet electrostatic precipitator (WESP) to prevent aerosol Formation issues inside amine based carbon capture installations. A WESP is a suitable option since this study proves that it is very efficient for the removal of the Mist precursors inside the flue gas to be treated. Although a significant capital investment cost may be involved, energy requirements (i.e. low pressure drop), maintenance and therefore operational costs are expected to be very low. However, it is shown here that the WESP must be installed at the right location, i.e. the flue gas to be treated must contain no or very low levels of SO2. The reason is that the WESP's aerosol removal efficiency decreases strongly in the presence of SO2gas and in a certain range also with increasing voltages. This limits the positive effect that the WESP has on reducing the MEA emissions from the absorber since a large number of Mist Formation precursors remain in the flue gas. In the presence of SO2, a WESP can actually produce H2SO4aerosols. It is shown that these newly created aerosols are very small (low nanometre range). This inFormation is very important for future pilot and demo amine carbon capture installations thinking of implementing a WESP as countermeasure to aerosol Formation issues. It implies that no or very low levels of SO2should still be present in the flue gas before entering the WESP. Since most of the amine carbon capture installations have a pre-scrubber (usually using NaOH to remove residual SO2in the flue leaving the power plant's FGD) in front of their amine absorber, the WESP must be installed behind this pre-scrubber and not in front of it.

Torsten Richter - One of the best experts on this subject based on the ideXlab platform.

  • the wet electrostatic precipitator as a cause of Mist Formation results from the amine based post combustion capture pilot plant at niederaussem
    International Journal of Greenhouse Gas Control, 2015
    Co-Authors: Peter Moser, Sandra Schmidt, Knut Stahl, Gerald Vorberg, Gustavo A. Lozano, Torsten Stoffregen, Torsten Richter
    Abstract:

    Abstract The investigation of emission Formation mechanisms – in particular for aerosol driven Mist Formation – and also the development and testing of emission reduction measures for amine based post-combustion capture are essential parts of the joint development programme of BASF, Linde and RWE Power at the post-combustion capture pilot plant at Niederaussem. During more than 28,000 operating hours with BASF's innovative capture technology OASE blue® several emission mitigation systems have been evaluated under real power plant conditions. A wet electrostatic precipitator (WESP) is often regarded as a suitable option to avoid Mist Formation. In contrast to this, our investigations have shown that the WESP can cause aerosol Formation by increasing the number concentration of ultrafine particles/droplets in the flue gas. Our results also indicate that this highly negative, voltage-dependent effect cannot be explained by a measurable increase of the SO3 concentration downstream of the WESP at the entrance of the CO2 absorber. Varying concentrations of SO2 in the flue gas – which can react to SO3 by ozone that is generated in the high-voltage field of the WESP – does not verifiably influence the entrainment. Low emission levels can be achieved by a special pre-treatment of the flue gas and by the so-called Dry Bed configuration.

  • The wet electrostatic precipitator as a cause of Mist Formation—Results from the amine-based post-combustion capture pilot plant at Niederaussem
    International Journal of Greenhouse Gas Control, 2015
    Co-Authors: Peter Moser, Sandra Schmidt, Knut Stahl, Gerald Vorberg, Gustavo A. Lozano, Torsten Stoffregen, Torsten Richter
    Abstract:

    Abstract The investigation of emission Formation mechanisms – in particular for aerosol driven Mist Formation – and also the development and testing of emission reduction measures for amine based post-combustion capture are essential parts of the joint development programme of BASF, Linde and RWE Power at the post-combustion capture pilot plant at Niederaussem. During more than 28,000 operating hours with BASF's innovative capture technology OASE blue® several emission mitigation systems have been evaluated under real power plant conditions. A wet electrostatic precipitator (WESP) is often regarded as a suitable option to avoid Mist Formation. In contrast to this, our investigations have shown that the WESP can cause aerosol Formation by increasing the number concentration of ultrafine particles/droplets in the flue gas. Our results also indicate that this highly negative, voltage-dependent effect cannot be explained by a measurable increase of the SO3 concentration downstream of the WESP at the entrance of the CO2 absorber. Varying concentrations of SO2 in the flue gas – which can react to SO3 by ozone that is generated in the high-voltage field of the WESP – does not verifiably influence the entrainment. Low emission levels can be achieved by a special pre-treatment of the flue gas and by the so-called Dry Bed configuration.

Earl Goetheer - One of the best experts on this subject based on the ideXlab platform.

  • In-situ experimental investigation on the growth of aerosols along the absorption column in post combustion carbon capture
    International Journal of Greenhouse Gas Control, 2019
    Co-Authors: Shreyas Harsha, Purvil Khakharia, Earl Goetheer, Arjen Huizinga, Juliana Garcia Moretz-sohn Monteiro, Thijs J. H. Vlugt
    Abstract:

    The amine-based post combustion carbon capture process is one of the most advanced and preferred technologies to reduce CO 2 emissions from point sources like power plants. The emissions of amine from capture plants is one of the biggest challenges faced by this technology. These emissions typically occur by means of aerosol/Mist Formation. To develop effective countermeasures, it is crucial to understand the dynamic behavior of aerosols within the column, which is currently not well understood. This manuscript presents the results from a study aiming to understand the mechanism of aerosol growth and its behavior along the absorber column in terms of particles number concentration, particle size distribution, and amine emissions. For that, a series of experiments were performed in TNO's bench scale CO 2 capture plant using 30 wt% monoethnolamine (MEA) as solvent. For a SO 3 and CO 2 concentrations of 5.25 ppm and 12.5 vol.% in the flue gas, MEA emissions at the top exit of the column were recorded as 1051 mg/Nm 3 (with vapour emissions of 381 mg/Nm 3 ). In the absence of SO 3 in the flue gas, inlet particle concentration was 2.71 × 10 7 /cm 3 and resulting MEA emissions reduced by 63.5%–383 mg/Nm 3 . From the bottom of the column until the point of maximum temperature, the MEA content in the vapour phase was consistent with the volatility of the solvent. After this point it drastically increases to 1051 mg/Nm 3 . Both the number of particles and the total particle mass has lowered from the bottom to the top of the column. For the benchmark test, inlet and outlet total particle concentration were found to be 6.24 × 10 7 /cm 3 and 2.3 × 10 7 /cm 3 respectively, while total particle mass is 2.22 mg/m 3 at inlet and 1.32 mg/m 3 at outlet. Particles with a dimeter below 0.006 ?m contribute the most to total particle concentration both at the inlet (50%) and outlet (32%), while particles with diameter of 0.087 ?m contributes the most to the total particle mass at inlet (47%) and outlet (55%). The measured total mass of particles was in the order of magnitude of 1 mg/m 3 . This is much lower than the expected aerosol mass emissions, in the order of magnitude of 1 g/Nm 3 based on FTIR emissions. No particles larger than 0.147 ?m were recorded, which might explain the low total mass recorded. The cause for this is still under investigation, but it suggests that the sampling procedure may induce systematic errors to the measurements. Nonetheless, the observations from this study have given further insight into the aerosol dynamics in the absorber column and corresponding emissions. © 2019 Elsevier Ltd

  • Effect of a gas-gas-heater on H2SO4 aerosol Formation: implications for Mist Formation in amine based carbon capture
    International Journal of Greenhouse Gas Control, 2015
    Co-Authors: Jan Mertens, Purvil Khakharia, Earl Goetheer, Bernd Schallert, R. Bruns, Nathalie Faniel, W. Albrecht, Julien Blondeau, Katrin Schaber
    Abstract:

    This study is to our knowledge the first to describe the effect of a Gas-Gas Heater (GGH) of a coal fired power plant's has on (i) the H2SO4 concentration and (ii) the particle/aerosol number concentration and particle size distribution present in the flue gas. In the absence of a GGH, homogenous nucleation takes places inside the Wet Flue Gas Desulphurisation (WFGD) converting the gaseous H2SO4 into aerosol H2SO4. This leads to a high aerosol number concentration behind the WFGD with 80% of the aerosols being smaller than 0.02 μm. This implies that an amine based carbon capture (CC) installation treating this flue gas can suffer from amine Mist Formation due to the high amount of available nuclei (i.e., H2SO4 aerosols) resulting in high amine emissions. In contrast, in the presence of a GGH not only 70% of the H2SO4 is removed from the flue gas (measured at the Nijmegen powerplant), but also homogenous nucleation in the WFGD is prevented resulting in low particle number concentrations. The flue gas leaving the GGH will not create any Mist Formation issues in an amine based CC installation due to the low amount of nuclei present in the flue gas. It is not the reduction in H2SO4 concentration by 70% inside the GGH as such that prevents Mist Formation but absence of H2SO4 in its aerosol form. These results are most likely quite widely transformable to other power plants that burn low sulfur coal i.e., around 0.7 weight%. This inFormation will serve future pilot and demo CC installation around the world; in particular when retrofitted on power plants that have a GGH.

  • A wet electrostatic precipitator (WESP) as countermeasure to Mist Formation in amine based carbon capture
    International Journal of Greenhouse Gas Control, 2014
    Co-Authors: Jan Mertens, C. Anderlohr, Purvil Khakharia, Peter Rogiers, L Brachert, Earl Goetheer, Katrin Schaber
    Abstract:

    This study is to our knowledge the first to evaluate the potential of a wet electrostatic precipitator (WESP) to prevent aerosol Formation issues inside amine based carbon capture installations. A WESP is a suitable option since this study proves that it is very efficient for the removal of the Mist precursors inside the flue gas to be treated. Although a significant capital investment cost may be involved, energy requirements (i.e. low pressure drop), maintenance and therefore operational costs are expected to be very low. However, it is shown here that the WESP must be installed at the right location, i.e. the flue gas to be treated must contain no or very low levels of SO2. The reason is that the WESP's aerosol removal efficiency decreases strongly in the presence of SO2gas and in a certain range also with increasing voltages. This limits the positive effect that the WESP has on reducing the MEA emissions from the absorber since a large number of Mist Formation precursors remain in the flue gas. In the presence of SO2, a WESP can actually produce H2SO4aerosols. It is shown that these newly created aerosols are very small (low nanometre range). This inFormation is very important for future pilot and demo amine carbon capture installations thinking of implementing a WESP as countermeasure to aerosol Formation issues. It implies that no or very low levels of SO2should still be present in the flue gas before entering the WESP. Since most of the amine carbon capture installations have a pre-scrubber (usually using NaOH to remove residual SO2in the flue leaving the power plant's FGD) in front of their amine absorber, the WESP must be installed behind this pre-scrubber and not in front of it.

  • Predicting Amine Mist Formation Based on Aerosol Number Concentration and Size Measurements in Flue Gas
    Energy Procedia, 2014
    Co-Authors: Jan Mertens, Purvil Khakharia, L Brachert, Dominique Desagher, Bernd Schallert, Earl Goetheer
    Abstract:

    Amine based solvent used for CO2 capture can be lost during the process due to: degradation, vaporization, mechanical losses and aerosol (Mist) Formation. Only recently, studies have appeared pointing out that aerosols can dominate the total amine emission at pilot plant scale behind coal fired power plants. Future full scale amine scrubber installations will be imposed emission limit values (ELV) for a number of components including NH3 and the amine itself. Most likely these ELV will be expressed as maximum concentrations tolerated in the CO2 poor flue gas leaving the stack so it is important to prevent or cure amine aerosol emission. The study presents a novel combination of two existing measurement techniques, that measure: (i) amine emissions from the top of the absorber using FTIR and (ii) PSD of the incoming flue gas using the ELPI+. The study is the first to show how combining these two measurement techniques allows to predict the presence or absence of Mist Formation. This hypothesis is based on inFormation obtained during several measurement campaigns on different pilot plants.

Jan Mertens - One of the best experts on this subject based on the ideXlab platform.

  • Effect of a gas-gas-heater on H2SO4 aerosol Formation: implications for Mist Formation in amine based carbon capture
    International Journal of Greenhouse Gas Control, 2015
    Co-Authors: Jan Mertens, Purvil Khakharia, Earl Goetheer, Bernd Schallert, R. Bruns, Nathalie Faniel, W. Albrecht, Julien Blondeau, Katrin Schaber
    Abstract:

    This study is to our knowledge the first to describe the effect of a Gas-Gas Heater (GGH) of a coal fired power plant's has on (i) the H2SO4 concentration and (ii) the particle/aerosol number concentration and particle size distribution present in the flue gas. In the absence of a GGH, homogenous nucleation takes places inside the Wet Flue Gas Desulphurisation (WFGD) converting the gaseous H2SO4 into aerosol H2SO4. This leads to a high aerosol number concentration behind the WFGD with 80% of the aerosols being smaller than 0.02 μm. This implies that an amine based carbon capture (CC) installation treating this flue gas can suffer from amine Mist Formation due to the high amount of available nuclei (i.e., H2SO4 aerosols) resulting in high amine emissions. In contrast, in the presence of a GGH not only 70% of the H2SO4 is removed from the flue gas (measured at the Nijmegen powerplant), but also homogenous nucleation in the WFGD is prevented resulting in low particle number concentrations. The flue gas leaving the GGH will not create any Mist Formation issues in an amine based CC installation due to the low amount of nuclei present in the flue gas. It is not the reduction in H2SO4 concentration by 70% inside the GGH as such that prevents Mist Formation but absence of H2SO4 in its aerosol form. These results are most likely quite widely transformable to other power plants that burn low sulfur coal i.e., around 0.7 weight%. This inFormation will serve future pilot and demo CC installation around the world; in particular when retrofitted on power plants that have a GGH.

  • A wet electrostatic precipitator (WESP) as countermeasure to Mist Formation in amine based carbon capture
    International Journal of Greenhouse Gas Control, 2014
    Co-Authors: Jan Mertens, C. Anderlohr, Purvil Khakharia, Peter Rogiers, L Brachert, Earl Goetheer, Katrin Schaber
    Abstract:

    This study is to our knowledge the first to evaluate the potential of a wet electrostatic precipitator (WESP) to prevent aerosol Formation issues inside amine based carbon capture installations. A WESP is a suitable option since this study proves that it is very efficient for the removal of the Mist precursors inside the flue gas to be treated. Although a significant capital investment cost may be involved, energy requirements (i.e. low pressure drop), maintenance and therefore operational costs are expected to be very low. However, it is shown here that the WESP must be installed at the right location, i.e. the flue gas to be treated must contain no or very low levels of SO2. The reason is that the WESP's aerosol removal efficiency decreases strongly in the presence of SO2gas and in a certain range also with increasing voltages. This limits the positive effect that the WESP has on reducing the MEA emissions from the absorber since a large number of Mist Formation precursors remain in the flue gas. In the presence of SO2, a WESP can actually produce H2SO4aerosols. It is shown that these newly created aerosols are very small (low nanometre range). This inFormation is very important for future pilot and demo amine carbon capture installations thinking of implementing a WESP as countermeasure to aerosol Formation issues. It implies that no or very low levels of SO2should still be present in the flue gas before entering the WESP. Since most of the amine carbon capture installations have a pre-scrubber (usually using NaOH to remove residual SO2in the flue leaving the power plant's FGD) in front of their amine absorber, the WESP must be installed behind this pre-scrubber and not in front of it.

  • Predicting Amine Mist Formation Based on Aerosol Number Concentration and Size Measurements in Flue Gas
    Energy Procedia, 2014
    Co-Authors: Jan Mertens, Purvil Khakharia, L Brachert, Dominique Desagher, Bernd Schallert, Earl Goetheer
    Abstract:

    Amine based solvent used for CO2 capture can be lost during the process due to: degradation, vaporization, mechanical losses and aerosol (Mist) Formation. Only recently, studies have appeared pointing out that aerosols can dominate the total amine emission at pilot plant scale behind coal fired power plants. Future full scale amine scrubber installations will be imposed emission limit values (ELV) for a number of components including NH3 and the amine itself. Most likely these ELV will be expressed as maximum concentrations tolerated in the CO2 poor flue gas leaving the stack so it is important to prevent or cure amine aerosol emission. The study presents a novel combination of two existing measurement techniques, that measure: (i) amine emissions from the top of the absorber using FTIR and (ii) PSD of the incoming flue gas using the ELPI+. The study is the first to show how combining these two measurement techniques allows to predict the presence or absence of Mist Formation. This hypothesis is based on inFormation obtained during several measurement campaigns on different pilot plants.

Purvil Khakharia - One of the best experts on this subject based on the ideXlab platform.

  • In-situ experimental investigation on the growth of aerosols along the absorption column in post combustion carbon capture
    International Journal of Greenhouse Gas Control, 2019
    Co-Authors: Shreyas Harsha, Purvil Khakharia, Earl Goetheer, Arjen Huizinga, Juliana Garcia Moretz-sohn Monteiro, Thijs J. H. Vlugt
    Abstract:

    The amine-based post combustion carbon capture process is one of the most advanced and preferred technologies to reduce CO 2 emissions from point sources like power plants. The emissions of amine from capture plants is one of the biggest challenges faced by this technology. These emissions typically occur by means of aerosol/Mist Formation. To develop effective countermeasures, it is crucial to understand the dynamic behavior of aerosols within the column, which is currently not well understood. This manuscript presents the results from a study aiming to understand the mechanism of aerosol growth and its behavior along the absorber column in terms of particles number concentration, particle size distribution, and amine emissions. For that, a series of experiments were performed in TNO's bench scale CO 2 capture plant using 30 wt% monoethnolamine (MEA) as solvent. For a SO 3 and CO 2 concentrations of 5.25 ppm and 12.5 vol.% in the flue gas, MEA emissions at the top exit of the column were recorded as 1051 mg/Nm 3 (with vapour emissions of 381 mg/Nm 3 ). In the absence of SO 3 in the flue gas, inlet particle concentration was 2.71 × 10 7 /cm 3 and resulting MEA emissions reduced by 63.5%–383 mg/Nm 3 . From the bottom of the column until the point of maximum temperature, the MEA content in the vapour phase was consistent with the volatility of the solvent. After this point it drastically increases to 1051 mg/Nm 3 . Both the number of particles and the total particle mass has lowered from the bottom to the top of the column. For the benchmark test, inlet and outlet total particle concentration were found to be 6.24 × 10 7 /cm 3 and 2.3 × 10 7 /cm 3 respectively, while total particle mass is 2.22 mg/m 3 at inlet and 1.32 mg/m 3 at outlet. Particles with a dimeter below 0.006 ?m contribute the most to total particle concentration both at the inlet (50%) and outlet (32%), while particles with diameter of 0.087 ?m contributes the most to the total particle mass at inlet (47%) and outlet (55%). The measured total mass of particles was in the order of magnitude of 1 mg/m 3 . This is much lower than the expected aerosol mass emissions, in the order of magnitude of 1 g/Nm 3 based on FTIR emissions. No particles larger than 0.147 ?m were recorded, which might explain the low total mass recorded. The cause for this is still under investigation, but it suggests that the sampling procedure may induce systematic errors to the measurements. Nonetheless, the observations from this study have given further insight into the aerosol dynamics in the absorber column and corresponding emissions. © 2019 Elsevier Ltd

  • Effect of a gas-gas-heater on H2SO4 aerosol Formation: implications for Mist Formation in amine based carbon capture
    International Journal of Greenhouse Gas Control, 2015
    Co-Authors: Jan Mertens, Purvil Khakharia, Earl Goetheer, Bernd Schallert, R. Bruns, Nathalie Faniel, W. Albrecht, Julien Blondeau, Katrin Schaber
    Abstract:

    This study is to our knowledge the first to describe the effect of a Gas-Gas Heater (GGH) of a coal fired power plant's has on (i) the H2SO4 concentration and (ii) the particle/aerosol number concentration and particle size distribution present in the flue gas. In the absence of a GGH, homogenous nucleation takes places inside the Wet Flue Gas Desulphurisation (WFGD) converting the gaseous H2SO4 into aerosol H2SO4. This leads to a high aerosol number concentration behind the WFGD with 80% of the aerosols being smaller than 0.02 μm. This implies that an amine based carbon capture (CC) installation treating this flue gas can suffer from amine Mist Formation due to the high amount of available nuclei (i.e., H2SO4 aerosols) resulting in high amine emissions. In contrast, in the presence of a GGH not only 70% of the H2SO4 is removed from the flue gas (measured at the Nijmegen powerplant), but also homogenous nucleation in the WFGD is prevented resulting in low particle number concentrations. The flue gas leaving the GGH will not create any Mist Formation issues in an amine based CC installation due to the low amount of nuclei present in the flue gas. It is not the reduction in H2SO4 concentration by 70% inside the GGH as such that prevents Mist Formation but absence of H2SO4 in its aerosol form. These results are most likely quite widely transformable to other power plants that burn low sulfur coal i.e., around 0.7 weight%. This inFormation will serve future pilot and demo CC installation around the world; in particular when retrofitted on power plants that have a GGH.

  • A wet electrostatic precipitator (WESP) as countermeasure to Mist Formation in amine based carbon capture
    International Journal of Greenhouse Gas Control, 2014
    Co-Authors: Jan Mertens, C. Anderlohr, Purvil Khakharia, Peter Rogiers, L Brachert, Earl Goetheer, Katrin Schaber
    Abstract:

    This study is to our knowledge the first to evaluate the potential of a wet electrostatic precipitator (WESP) to prevent aerosol Formation issues inside amine based carbon capture installations. A WESP is a suitable option since this study proves that it is very efficient for the removal of the Mist precursors inside the flue gas to be treated. Although a significant capital investment cost may be involved, energy requirements (i.e. low pressure drop), maintenance and therefore operational costs are expected to be very low. However, it is shown here that the WESP must be installed at the right location, i.e. the flue gas to be treated must contain no or very low levels of SO2. The reason is that the WESP's aerosol removal efficiency decreases strongly in the presence of SO2gas and in a certain range also with increasing voltages. This limits the positive effect that the WESP has on reducing the MEA emissions from the absorber since a large number of Mist Formation precursors remain in the flue gas. In the presence of SO2, a WESP can actually produce H2SO4aerosols. It is shown that these newly created aerosols are very small (low nanometre range). This inFormation is very important for future pilot and demo amine carbon capture installations thinking of implementing a WESP as countermeasure to aerosol Formation issues. It implies that no or very low levels of SO2should still be present in the flue gas before entering the WESP. Since most of the amine carbon capture installations have a pre-scrubber (usually using NaOH to remove residual SO2in the flue leaving the power plant's FGD) in front of their amine absorber, the WESP must be installed behind this pre-scrubber and not in front of it.

  • Predicting Amine Mist Formation Based on Aerosol Number Concentration and Size Measurements in Flue Gas
    Energy Procedia, 2014
    Co-Authors: Jan Mertens, Purvil Khakharia, L Brachert, Dominique Desagher, Bernd Schallert, Earl Goetheer
    Abstract:

    Amine based solvent used for CO2 capture can be lost during the process due to: degradation, vaporization, mechanical losses and aerosol (Mist) Formation. Only recently, studies have appeared pointing out that aerosols can dominate the total amine emission at pilot plant scale behind coal fired power plants. Future full scale amine scrubber installations will be imposed emission limit values (ELV) for a number of components including NH3 and the amine itself. Most likely these ELV will be expressed as maximum concentrations tolerated in the CO2 poor flue gas leaving the stack so it is important to prevent or cure amine aerosol emission. The study presents a novel combination of two existing measurement techniques, that measure: (i) amine emissions from the top of the absorber using FTIR and (ii) PSD of the incoming flue gas using the ELPI+. The study is the first to show how combining these two measurement techniques allows to predict the presence or absence of Mist Formation. This hypothesis is based on inFormation obtained during several measurement campaigns on different pilot plants.