Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Publikationsserver d...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
versions View all 2 versions
addClaim

This Research product is the result of merged Research products in OpenAIRE.

You have already added 0 works in your ORCID record related to the merged Research product.

Release of inorganic trace elements from high-temperature gasification of coal

Authors: Bläsing, Marc;

Release of inorganic trace elements from high-temperature gasification of coal

Abstract

The development of cleaner, more efficient techniques in next-generation coal power plants is becoming increasingly important, especially regarding to the discussion of the influence of CO2 emissions on global warming. A promising coal utilisation proess is the integrated gasification combined cycle process. The direct use of the raw gas requires gas clean-up to prevent downstream parts of the gasifier from several problems. An increased efficiency and a decreased amount of harmful species can be achieved through hot fuel gas cleaning. This clean-up technique requires a comprehensive knowledge of the release characteristics of inorganic coal constituents. The aim of this thesis was to provide enhanced knowledge of the effect of key process parameters and of the chemical constitution of coal on the release of Na, K, S, and Cl species from high-temperature coal gasification. The experimental setup consisted of atmospheric flow tube furnaces and a pressurised furnace. In-situ analysis of the product gas was carried out using molecular beam mass spectrometry. A broad spectrum of different coals with assumed qualitative and quantitative differences in the release characteristics was investigated. Additionally, experiments with model substances were performed. The results of the experimental investigation were compared with thermodynamic calculations. Finally, recommendations, for the operation of a high-temperature gasifier are formulated.

Die Entwicklung hocheffizienter Techniken zur energetischen Nutzung von Kohle gewinnt zunehmend an Bedeutung, u.a. aufgrund der Diskussion um den Beitrag der anthropogenen CO2-Emission zum Klimawandel. Ein aussichtsreicher Prozess ist die integrierte Vergasung von Kohle und die Nutzung des Produktgases in einem GuD-Kraftwerk. Um nachfolgende Anlagenteile vor Schäden zu schützen, muss das Produktgas gereinigt werden. Der Einsatz einer Hochtemperaturreinigungsstufe kann sowohl die Effizienz des Gesamtprozesses erhöhen als auch die Menge an schädlichen Verbindungen im Gas reduzieren. Notwendige Voraussetzung für die Entwicklung der Hochtemperaturgasreinigung ist ein umfassendes Verständnis des Freisetzungsverhaltens anorganischer Kohlenbestandteile. Ziel dieser Arbeit war es eine Wissensbasis bezüglich des Einflusses verschiedener Prozessparameter und der Zusammensetzung der Kohle auf das Freisetzungsverhalten von Na-, K-, Cl- und S-haltigen Verbindungen zu schaffen. Bei den Freisetzungsversuchen wurden Kohlen verschiedenen Ranges in einem atmosphärischen Rohrofen bzw. in einem Druckofen umgesetzt. Das Produktgas wurde mittels Molekularstrahl-Massenspektrometer analysiert. Zusätzlich wurden Versuche mit Modellsubstanzen und thermodynamische Rechnungen durchgeführt. Abschließend wurden Empfehlungen für den Betrieb eines Hochtemperaturvergasers formuliert.

Country
Germany
Related Organizations
Keywords

Spurenelement, coal, Vergasung, info:eu-repo/classification/ddc/540, Kohle, Chemie, Spurenstoffe, gasification, trace elements, Chemistry and allied sciences, Spurenstoff

  • BIP!
    Impact byBIP!
    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Related to Research communities
Energy Research