Chemie Ingenieur TechnikVolume 93, Issue 1-2 p. 327-327 VorschauFree Access Vorschau: Chem. Ing. Tech. 3/2021 First published: 21 January 2021 https://doi.org/10.1002/cite.202170106AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume93, Issue1-2Special Issue: Herrn Professor Dr.‐Ing. Matthias Kraume zum 65. Geburtstag gewidmetJanuary/February 2021Pages 327-327 RelatedInformation

AbstractDie vorwiegend in urbanen Ballungsräumen liegenden Krematorien erfüllen die Emissionsgrenzwerte nach der 27. BImSchV meist zuverlässig. In dieser ist für die als gesundheitsschädlich eingestuften Substanzen Quecksilber (Hg) und Feinstaub kein Grenzwert angegeben. In diesem Beitrag wird der Stand des Wissens aus Publikationen und eigenen Untersuchungen zur Freisetzung von Quecksilber im Kremationsprozess und zur Situation der Feinstaubemissionen analysiert. Aus den dargestellten Wirkmechanismen der verschiedenen Abgasreinigungstechniken werden anschließend Optimierungsmöglichkeiten für die weitere Minderung der Emissionen von Hg und Feinstaub abgeleitet.

Crematories which are mainly located in urban areas, usually reliably meet the relevant emission limit values according to 27. BImSchV. For mercury and fine dust, no limit is defined although they are classified as harmful to health. The state of knowledge from publications and our own studies on the release of mercury in the cremation process and the situation of fine dust emissions is analyzed. Subsequently, options for the further emission reduction of these two substances are derived from the mechanisms taking place in various exhaust gas purification techniques.

Mercury is known for primarily binding organically in lignite and inorganically in coal. The knowledge about the binding forms does not impact the speciation of mercury in the combustion chamber of a power plant. However, the relation between binding forms and release behavior is crucial for modelling the material flow of mercury in the firing process. Oxidizing agents like halogen salts could be added more effectively. There are different analyzing methods like the float-sink-analysis or the sequential leaching to determine the mercury binding forms. Nevertheless, there is no standard procedure for each analyzing method, which allows a comparison. In this work, mercury binding forms in Central German lignite were investigated. Results from thermal treatment of the lignite show a loss of mercury of 87% up to a temperature of 200 degrees C. The responsible mercury binding form for that release behavior is discussed by using the results of a leaching process for the extraction of humic substances, mercury analyses and simultaneous thermal analyses with mass spectrometry (TG/DSC-MS). The results show that mercury is bound to humic acids with 0.261 mg/kg d , and in humin with 0.735 mg/kg(dry). The high mercury affinity of humic substances is noted as the result of chemical binding with functional groups like the carboxyl group, hydroxyl group and thiol group. Compared to the raw sample, a thermally treated lignite (at 200 degrees C) does not show any thiol group (m/z =48) in ion intensity measurement. This work proves the organic binding form of mercury with humic substances in lignite.

In terms of analyzing and modeling conditioned dry absorption, an unbiased view on the injected hydrated lime particles is needed. Multiple investigations on the reaction mechanisms are reported in...

Chemie Ingenieur TechnikVolume 89, Issue 5 p. 698-698 VorschauFree Access Vorschau: Chem. Ing. Tech. 6/2017 First published: 24 April 2017 https://doi.org/10.1002/cite.201770056AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume89, Issue5Special Issue: ProzessoptimierungMay 2017Pages 698-698 RelatedInformation

Die CO2-Beladung eines Waschmittels (WM) ist bei der Beurteilung der Effizienz eines Absorptions-/Desorptionsprozesses von entscheidender Bedeutung. Die Bestimmung uber Inline-Messverfahren ist jedoch kaum moglich. Eine Korrelation zur Bestimmung der CO2-Beladung in Abhangigkeit von der WM-Viskositat und -Temperatur wurde experimentell ermittelt. Die Korrelation konnte durch Kontrollmessungen und den Vergleich mit Literaturwerten verifiziert werden. Es ergab sich eine relative Abweichung von unter 10%. Gleichzeitig wurde untersucht, ob der pH-Wert und die elektrische Leitfahigkeit des WM ebenfalls geeignete Gro ss en fur eine Korrelation sind.Abstract The solvents CO2 loading is an important factor when evaluating the efficiency of an absorption/desorption process. There is almost no possibility to measure the CO2 loading inline. Therefore experiments were made to determine a correlation between the CO2 loading and the solvents viscosity as well as the solvents temperature. The correlation was verified using control tests and values from the literature. An overall maximum relative error under 10% could be observed. Simultaneously investigations were made to understand if the solvents electrical conductivity and pH value are suitable for a similar correlation.

The article examines the income situation for a waste incinerations plants in the current market design and explains possible, useful expansion options. Subsequently, possible contributions to the stabilization of the energy system are explained.

Modularization has been identified as one of the research fields of the "50% idea". A development methodology for modules must consider both the economies of scale for investment costs and costs of operation and maintenance. In this paper, the impact of an absorber module, which is offered as discretized diameter scaling, on the total process is investigated at the example of the CO2 separation from biogas. The simulation shows the effect of this approach to the stripper diameter and the energy demand of the process. The calculations form the basis for applying cost models.

Absorptive gas purification is one good possibility to reduce the CO 2 output of a power station. This contribution presents the new absorbent GenosorbN, with the results of initial experimental series. The degree of elimination to be targeted for the future is discussed.