Dusseldorf, Germany
Dusseldorf, Germany

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Bazhenov S.,RAS Topchiev Institute of Petrochemical Synthesis | Vasilevsky V.,RAS Topchiev Institute of Petrochemical Synthesis | Rieder A.,EnBW | Unterberger S.,EnBW | And 4 more authors.
Energy Procedia | Year: 2014

Heat-stable salts (HSS) are well-known degradation products in the acid gas removal technologies with alkanolamines, especially in the post-combustion CO2 Capture processes. The traditionally applied HSS removal methods such as purging, filtration, distillation might be economically unattractive in the large scale post-combustion plant case. Electrodialysis could be an alternative method for solvent reclaiming with removal of electrically charged amine degradation products. This work presents the results of electrodialysis reclaiming concept tested under real operation conditions during pilot campaign at Heilbronn post combustion CO2 Capture pilot plant. The HSS removal results and some process specific parameters are presented. © 2014 The Authors. Published by Elsevier Ltd.


Bazhenov S.,RAS Topchiev Institute of Petrochemical Synthesis | Rieder A.,EnBW | Schallert B.,EON Technologies GmbH | Vasilevsky V.,RAS Topchiev Institute of Petrochemical Synthesis | And 4 more authors.
International Journal of Greenhouse Gas Control | Year: 2015

A study of the behavior of heat stable salts (HSS) during electrodialysis (ED) reclaiming of monoethanolamine solvent (30. wt.% MEA) is reported in detail. Degraded lean MEA samples with a loading of approx. 0.2. mol/mol were taken from the solvent loop of post-combustion capture (PCC) pilot plant after 400, 535 and 972. h of operation at real conditions. The specially designed conventional pilot ED unit equipped with cation-exchanged membranes and anion-exchanged membranes was used. Before and after ED reclaiming, all streams were analyzed for specific solvent components. A quite uniform removal of all analyzed HSS anions (except for nitrate ions) during the ED treatment prevents accumulation of any specific undesirable compound in the solvent loop. Visual inspection of the ion-exchange membranes revealed the deposition on the membrane surface having reddish-brown color. It was experimentally confirmed that such deposition did not noticeable affect on membrane performance in ED process. Furthermore, it was demonstrated on the laboratory level that selected membranes possess a good long-term stability after being contacted with fresh and degraded MEA for approx. 2 years. © 2015 Elsevier Ltd.


Fraboulet I.,INERIS | Chahen L.,French Institute of Petroleum | Lestremau F.,INERIS | Grimstvedt A.,Sintef | And 3 more authors.
Energy Procedia | Year: 2016

Processes of post combustion CO2 capture using amine based solvents generate nitrogenous compounds. Among these products, carcinogenic nitrosamines are of great concern due the potential impacts on the environment and human health. Trace analysis of nitrosamines in simple matrices such as water is well described in standard methods [1]. However, measuring nitrosamines in CO2 capture processes emissions is much more challenging. Nitrosamines, formed to small concentrations as solvent degradation products, may indeed be present in solvent, wash waters, and atmospheric emissions which are more complicated to monitor. Within the FP7 OCTAVIUS project, 2 international round robins on the analysis of 9 nitrosamines in solvent matrices and the atmospheric emissions, from the EnBW CO2 capture pilot plant in Heilbronn (Germany) were organized. The first round robin test was performed on solvent matrices. The analytical methods of the laboratories involved were compared using synthetic spiked samples and liquid samples obtained from the pilot plant. The second round robin test was performed on atmospheric emissions collected using a sampling train with cold impingers filled in with sulphamic acid in water. Each laboratory was provided with two blind samples of the liquid mixture spiked at different levels of concentrations of nitrosamines. © 2016 The Authors.


Radgen P.,EON Technologies GmbH | Rode H.,EON Technologies GmbH | Reddy S.,Fluor Corporation | Yonkoski J.,Fluor Corporation
Energy Procedia | Year: 2014

The paper describes experimental results obtained with CO2 capture from a coal fired power plant in Wilhelmshaven. After giving some basic information on the power and the pilot-scale carbon capture unit, findings on stress corrosion cracking in the Reclaimer, impact of SO3 on solvent emission and energy efficiency, which can be improved by applying lean vapour recompression. The paper highlight the learnings achieved when moving from lab scale testing to pilot scale testing. © 2014 The Authors Published by Elsevier Ltd.


Schallert B.,EON Technologies GmbH | Neuhaus S.,EON Technologies GmbH | Satterley C.J.,Soar Technology, Inc.
Energy Procedia | Year: 2014

Fly ash entering a CO2 capture plant in the incoming coal-fired flue gas is a potential source of metals that may boost amine losses in the plant. This study presents a comparative assessment of the impact of fly ash quality and the level of solvent degradation on the leaching mobility of ash metals. The results of two ash samples from two European power stations are presented leached with fresh 30 wt% lean MEA & degraded lean MEA solvent taken from the capture pilot plants based at these to power stations. The results show that degradation of the solvent increases the mobility for Mn & V (and by extrapolation Cu and other trace metals), but Fe mobility remains unchanged with increased degradation. Ash/solvent ratio was found to have the most significant impact on leaching rates and with lower ratios expected in the process than tested here, it is expected that fly ash leaching will only be a minor contribute to total metal levels in the solvent and subsequent catalyzed degradation. It is recommended to conduct further studies using lower ash/solvent ratios and to consider the impact of FGD carryover on the metal transfer into the solvent. © 2014 The Authors Published by Elsevier Ltd.

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