000842488 001__ 842488
000842488 005__ 20240708132842.0
000842488 037__ $$aFZJ-2018-00713
000842488 041__ $$aEnglish
000842488 1001_ $$0P:(DE-Juel1)144726$$aWilkner, Kai$$b0$$eCorresponding author$$ufzj
000842488 1112_ $$cUniversity of Twente Enschede$$d2017-11-16 - 2017-11-16$$wNetherlands
000842488 245__ $$aMembrane performance tests in flue gas of fossil power plants$$f2017-11-16 - 
000842488 260__ $$c2017
000842488 3367_ $$033$$2EndNote$$aConference Paper
000842488 3367_ $$2DataCite$$aOther
000842488 3367_ $$2BibTeX$$aINPROCEEDINGS
000842488 3367_ $$2ORCID$$aLECTURE_SPEECH
000842488 3367_ $$0PUB:(DE-HGF)31$$2PUB:(DE-HGF)$$aTalk (non-conference)$$btalk$$mtalk$$s1538477303_30027$$xInvited
000842488 3367_ $$2DINI$$aOther
000842488 520__ $$aCarbon capture and storage or utilization is a key technology to decrease CO2 emissions from conventional power plants, until cost efficient energy supply from renewable sources is possible. Membrane-based systems to capture CO2 from flue gas streams are considered a promising alternative to conventional absorption technology. Such an application sets a number of challenges towards the membrane, e.g. performance, stability, integrity, durability etc. For this reason, only experiments performed under real flue gas conditions could attest the membrane operation in a coal power plant.In the present work the effect of coal power plant exhaust gas on the performance of different kinds of membranes is investigated. Testing membranes in real flue gas represent a new approach, as testing under simulated flue gas conditions has already been undertaken. The exposure and performance experiments were carried out in a lignite-fueled and a hard-coal-fueled power plant, both offering significant variation in the flue gas compositions. A test rig was specially designed to enable the direct membrane contact with unconditioned flue gas inside the exhaust gas channel, while a second test rig was developed to test membrane samples with pre-treated (dehumidified and dust free) flue gas. Thanks to an integrated analythical system, the in-situ permeance and selectivity of the membrane can be continuously monitored. Different kinds of membranes have been tested including microporous silica based membranes with different modifications, as well as two kinds of polymeric membranes. The newer coal-fired power plants work under high water content of up to 30 vol.% and a relative humidity (RH) of 100 %. Gases (e.g. SO2, NOx) and alkaline species (e.g. Na, K) are dissolved in the present water resulting in highly aggressive condensate on the membrane surface and in the intermediate layers which inevitably leads to severe corrosion of all materials in contact with it. Under such condition, no membrane could be able to operate. Using the new test rig setup and pre-treating the flue gas to a low dew point and low relative humidity, the lifetime of the membranes could be significantly extended. In any case, also the operation under pre-conditioned flue gas is associated with some losses in selectivity and permeance for all tested membranes, for which the degradation mechanisms have to be still identified and understood.Aiming to achieve better comprehension of the individual damage mechanisms and the influence of the different functional layers, the gas flows in the membrane cell and the gas transport through the membrane assembly must be considered and better understood. By this, further development of the membranes would be significantly supported. Hence, the talk would give an outlook on forthcoming activities as the development of computational fluid dynamics models to map both the test cells and the different layers of the membrane.
000842488 536__ $$0G:(DE-HGF)POF3-113$$a113 - Methods and Concepts for Material Development (POF3-113)$$cPOF3-113$$fPOF III$$x0
000842488 909CO $$ooai:juser.fz-juelich.de:842488$$pVDB
000842488 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)144726$$aForschungszentrum Jülich$$b0$$kFZJ
000842488 9131_ $$0G:(DE-HGF)POF3-113$$1G:(DE-HGF)POF3-110$$2G:(DE-HGF)POF3-100$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bEnergie$$lEnergieeffizienz, Materialien und Ressourcen$$vMethods and Concepts for Material Development$$x0
000842488 9141_ $$y2018
000842488 9201_ $$0I:(DE-Juel1)IEK-1-20101013$$kIEK-1$$lWerkstoffsynthese und Herstellungsverfahren$$x0
000842488 980__ $$atalk
000842488 980__ $$aVDB
000842488 980__ $$aI:(DE-Juel1)IEK-1-20101013
000842488 980__ $$aUNRESTRICTED
000842488 981__ $$aI:(DE-Juel1)IMD-2-20101013