Demonstrating Emission Reduction – Results from the Post-combustion Capture Pilot Plant at Niederaussem

Moser, Peter; Schmidt, Sandra; Stahl, Knut; Vorberg, Gerald; Lozano, Gustavo A.; Stoffregen, Torsten; Rösler, Frank

doi:10.1016/j.egypro.2014.11.100

Cited by 43 publications

(15 citation statements)

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“…Most of these studies are experimental investigations that do not deal with the inner characterization of droplets. For details see (Fulk, 2016;Khakharia et al, 2014a;Mertens et al, 2012;Moser et al, 2014;Saha and Irvin, 2017). Some current studies, however, show modelling results for aerosol droplets in absorption columns (Kang et al, 2017;Zhang et al, 2017).…”

mentioning

confidence: 88%

Characterization of aerosol emissions from CO2 capture plants treating various power plant and industrial flue gases

Majeed

Svendsen

2018

International Journal of Greenhouse Gas Control

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Undesired aerosol formation in gas-liquid contact devices has been a well-known phenomenon in the chemical industry for several decades and can cause severe problems in industrial gas cleaning processes. Several studies indicate that aerosols can govern the total amine emissions from amine based CO2 capture (PCCC) plants. Despite the importance of aerosol formation and mitigation for the design of a PCCC plant, very little knowledge is available on the characterization and growth of these aerosols.Four different atmospheric flue gases were modelled in this work, ranging from 4-20% in CO2 content and representing natural gas, oil and coal fired power plants, and gas from the cement industry. Inlet droplets of size 0.15µ were tested in number concentrations from 1 -10 7 droplets/cm 3 . For 20% CO2, the effect of intercooling was studied.The findings are:Aerosol droplets grow from their initial size regardless of their initial composition and type of flue gas processed. The initial composition of the droplets has a significant effect on emissions.With increasing CO2 concentration, more carbamate is formed relative to free MEA. This leads to less effective water wash and significantly higher final emissions.With low droplet number concentration no visible depletion of MEA in the absorber and water wash sections was found for any of the CO2 concentrations. At 10 7 droplets/cm 3 , gas phase MEA partial pressure changes are clearly seen, first in the water wash, and then, at higher contents, the effect starts lower and lower down in the absorber.The carry-over of amine into the water wash increases with increasing gas phase CO2 content.However, the effect on the gas phase MEA content in the water wash goes through a maximum caused by strong carbamate formation at high CO2 concentrations.The droplet temperature profiles are unaffected by number concentration and initial composition of aerosol droplets.It is found that the water wash section reduces significantly the aerosol-based, and thereby the total, amine emissions. The effect of the water wash is reduced when the flue gas CO2 content increases.Intercooling lowers the partial pressure of MEA in both absorber and water wash significantly. This reduces the droplet growth and MEA content. The combined effect is a strong reduction in MEA emissions; in the case of 20% CO2 in the flue gas, by a factor of 5-10.

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mentioning

confidence: 88%

Characterization of aerosol emissions from CO2 capture plants treating various power plant and industrial flue gases

Majeed

Svendsen

2018

International Journal of Greenhouse Gas Control

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“…A water wash section has been added to the pilot plant to reduce amine emissions to the atmosphere. 29,30 The amine degradation, due to the presence of oxygen and other impurities like nitrogen oxides, as well as elevated temperatures during solvent regeneration, can result in other gaseous emissions of degradation compounds such as ammonia. 31 The flue gas upstream of the absorber was analysed using a BA5000 Bühler infrared spectroscope.…”

Section: Pilot Plantmentioning

confidence: 99%

Deep learning for industrial processes: Forecasting amine emissions from a carbon capture plant

Jablonka

Charalambous²,

Fernández³

et al. 2021

Preprint

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One of the main environmental impacts of amine-based carbon capture processes is the emission of the solvent and degradation products into the atmosphere. To mimic the mounting importance of intermittent operations of power plants we performed a stress test in which we measured the amine emissions from a pilot plant that has been in operation using a mixture of amines (CESAR1) in a slipstream from a coal-fired power plant. Understanding how changes in the operation far from the steady-state of the plant affect the emissions is key to designing emission mitigation strategies. However, conventional process modelling techniques struggle to capture the full dynamic, multivariate, and non-linear nature of this data. In this work, we report how a data-intensive approach can be used to learn the mapping between process and emissions from data. The resulting model can forecast the emissions, can be used to analyse the data and also perform in silico stress tests. By doing so, we reveal that emission mitigation strategies that work well for single component solvents (e.g. monoethanolamine) need to be revised for a mixture of solvents such as CESAR1. We expect that the combination of large amounts of data with flexible learning algorithms will impact the way we design and operate industrial processes, as we can now harvest information at conditions where conventional approaches fail.

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“…E-mail address: mertensja@yahoo.co.nz (J. Mertens). Knudsen and Bade, 2012;Carter, 2012;Mertens et al, 2012Mertens et al, , 2013Khakharia et al, 2013Khakharia et al, , 2014Moser et al, 2015;Baburao et al, 2015). These mist precursors can be ultrafine liquid or solid particles of sulphuric acid, salts or any form of particulate matter in the flue gas entering the absorber (Kamijo, 2011(Kamijo, , 2013Khakharia et al, 2013Khakharia et al, , 2014.…”

Section: Introductionmentioning

confidence: 97%

Effect of a gas–gas-heater on H2SO4 aerosol formation: Implications for mist formation in amine based carbon capture

Mertens¹,

Bruns²,

Schallert³

et al. 2015

International Journal of Greenhouse Gas Control

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Demonstrating Emission Reduction – Results from the Post-combustion Capture Pilot Plant at Niederaussem

Cited by 43 publications

References 9 publications

Characterization of aerosol emissions from CO2 capture plants treating various power plant and industrial flue gases

Characterization of aerosol emissions from CO2 capture plants treating various power plant and industrial flue gases

Deep learning for industrial processes: Forecasting amine emissions from a carbon capture plant

Effect of a gas–gas-heater on H2SO4 aerosol formation: Implications for mist formation in amine based carbon capture

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