Influence of temperature on the release of inorganic species during high temperature gasification of Rhenish lignite

Bläsing, Marc; Melchior, Tobias; Müller, Michael

doi:10.1016/j.fuproc.2010.11.005

Cited by 33 publications

(37 citation statements)

References 23 publications

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“…These results are in general agreement with trends observed in previous work under combustion and low-O 2 gasification conditions in which it was shown that H 2 S release is in high negative correlation with Ca/S ratio under gasification and combustion conditions [10]. Previous studies [27] have also shown that the amount of sulphur fixed in ash was a function of the Ca/S ratio and independent of the form of sulphur.…”

Section: Semi-quantitative Analysissupporting

confidence: 92%

“…In particular, a greater understanding of the role of the primary gasification reagents, CO 2 and H 2 O, in the release and reaction mechanisms of the volatile Na-, Cl-and S-species under entrained flow conditions is sought. The results of this study are further compared with previous results obtained under O 2 and O 2 /steam atmospheres [10,11,13] where appropriate.…”

Section: Introductionmentioning

confidence: 81%

“…Recent investigations in the area of the release of volatile inorganic species from low rank coals under gasification conditions have focused on the effects of temperature, pressure, oxygen partial pressure and steam addition [6,[10][11][12][13][14]. However, the influence of different bulk gas atmospheres on the release mechanisms is still unknown.…”

Section: Introductionmentioning

confidence: 99%

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The temperature-dependent release of volatile inorganic species from Victorian brown coals and German lignites under CO2 and H2O gasification conditions

Tanner

Bläsing²,

Müller³

et al. 2015

Fuel

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Section: Semi-quantitative Analysissupporting

confidence: 92%

Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

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The temperature-dependent release of volatile inorganic species from Victorian brown coals and German lignites under CO2 and H2O gasification conditions

Tanner

Bläsing²,

Müller³

et al. 2015

Fuel

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“…Chlorine species in the syngas are most of the time identified but rarely quantified. Chlorine species such as HCl, KCl and NaCl are formed during the gasification of chlorine containing feedstocks [18,[35][36][37][38]. Chlorine compounds could also react with NH 3 in the raw gas to form NH 4 Cl [3].…”

Section: Halogenmentioning

confidence: 99%

Synthesis Gas Purification

Chiche

Diverchy

Lucquin

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Purification des gaz de synthe`se -Les proce´de´s de synthe`se de biocarburants par voie Fischer-Tropsch (FT), voies B-XTL, repre´sentent des alternatives prometteuses pour la production d'e´nergie. Ces proce´de´s permettent la conversion en carburants de synthe`se de biomasse lignocellulosique, e´ventuellement mise en oeuvre en me´lange avec des charges fossiles telles que petcoke, charbons ou re´sidus sous vide. Pour ce faire, une e´tape de gaze´ification convertit la charge carbone´e en un gaz de synthe`se (me´lange de CO et H 2 ), lequel, apre`s ajustement du ratio H 2 /CO et e´limination du CO 2 , subit ensuite la re´action de FischerTropsch. Les gaz de synthe`se contiennent cependant de nombreuses impurete´s qui ne´cessitent d'eˆtre e´limine´es afin d'e´viter l'empoisonnement des catalyseurs Fischer-Tropsch. En raison de la grande varie´te´de charges pouvant eˆtre mises en oeuvre, la composition des gaz de synthe`se est susceptible de subir d'importantes variations, en particulier de part la nature des impurete´s (e´le´ments, spe´ciation) pre´sentes ainsi que leurs teneurs relatives. La composition des gaz de synthe`se est e´galement soumise a`des spe´cifications extreˆmement se´ve`res en terme de purete´lie´es a`l'importante sensibilite´aux poisons des catalyseurs FT. Pour ces raisons, la purification des gaz de synthe`se constitue un de´fi majeur pour le de´veloppement des proce´de´s B-XTL. Dans cet article, nous pre´sentons les principaux enjeux lie´s a`la purification des gaz de synthe`se. Les diffe´rents types d'impurete´s pouvant eˆtre pre´sentes dans les gaz de synthe`se sont pre´sente´es. L'influence de la nature de la charge, des technologies de gaze´ification ainsi que des conditions ope´ratoires associe´es sur la nature des impurete´s et leurs teneurs relatives est discute´e. Une attention particulie`re est porte´e au devenir des compose´s soufre´s, azote´s, des haloge`nes, me´taux lourds et me´taux de transition. Les principales technologies de purification des gaz de synthe`se (adsorption, absorption, re´actions catalytiques, etc.) sont finalement de´crites, ainsi que les de´fis associe´s.Abstract -Synthesis Gas Purification -Fischer-Tropsch (FT) based B-XTL processes are attractive alternatives for future energy production. These processes aim at converting lignocellulosic biomass possibly in co-processing with petcoke, coal, or vacuum residues into synthetic biofuels. A gasification step converts the feed into a synthesis gas (CO and H 2 mixture), which undergoes the Fischer-Tropsch reaction after H 2 /CO ratio adjustment and CO 2 removal. However synthesis gas also contains various impurities that must be removed in order to prevent Fischer-Tropsch catalyst poisoning. Oil & Gas Science and Technology -Rev. IFP Energies nouvelles, Vol. 68 (2013), No. 4, pp. 707-723 Copyright Ó 2013, IFP Energies nouvelles DOI: 10.2516 Due to the large feedstocks variety that can be processed, significant variations of the composition of the synthesis gas are expected. Especially, this affects the ...

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“…Thus, alkali transfer during coal combustion has been investigated by many researchers Bläsing and Müller, 2013;Bläsing et al, 2011;Schürmann et al, 2007;Naruse et al, 1998;Gottwald et al, 2002). In these studies, the effects of several factors such as coal type and its composition, operating conditions (temperature, pressure, residence time) and gas composition on alkali release were investigated.…”

Section: Introductionmentioning

confidence: 99%

Study of Alkali Emission and Control with Firing a High Alkali Coal

Kang

Zhang

et al. 2015

Combustion Science and Technology

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In this study, the sodium emission and control with firing a high alkali coal was investigated in a high-temperature muffle furnace. Kaolin was chosen as an additive tested to clarify its sodium capture mechanism and assess its capture performance. The influence of some firing-related factors such as kaolin dosage, temperature and particle sizes of both kaolin and coal on sodium release and sodium capture performance of kaolin was also studied. It was found that more sodium was released when the combustion temperature rose or fine fuel particles were combusted. Kaolin could efficiently capture sodium species to form high-melting sodium alminosilicates, primarily nepheline or carnegieite. Increasing kaolin dosage led to the promoted sodium retention. However, the promotion was not that pronounced in high kaolin dosages. High temperature had a negative effect on sodium capture by kaolin, which could be ascribed to the increasing sodium emission with temperature. Fine kaolin particles exhibited a good sodium Downloaded by [Stockholm University Library] at 21:55 11 August 2015A c c e p t e d M a n u s c r i p t 2 capture performance. Coal particle size had little impact on the interactions between kaolin and sodium species. More than 80 % of the total sodium was retained in ash by kaolin when firing coal (30 µm) with 3 µm kaolin addition in the dosage of 6 wt. % at 1100 °C.

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Influence of temperature on the release of inorganic species during high temperature gasification of Rhenish lignite

Cited by 33 publications

References 23 publications

The temperature-dependent release of volatile inorganic species from Victorian brown coals and German lignites under CO2 and H2O gasification conditions

The temperature-dependent release of volatile inorganic species from Victorian brown coals and German lignites under CO2 and H2O gasification conditions

Synthesis Gas Purification

Study of Alkali Emission and Control with Firing a High Alkali Coal

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