Calorimetric investigation of chemical additives affecting oxidation of coal at low temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F11%3AA11010BE" target="_blank" >RIV/61988987:17310/11:A11010BE - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Calorimetric investigation of chemical additives affecting oxidation of coal at low temperatures

Popis výsledku v původním jazyce

Interactions in the system ?coal - chemical additive - oxygen? were studied at temperature 30°C with the aim to recognise inhibitors of coal oxidation process that are able to modify coal surface in chemical way. Three coals of different rank were tested. As possible inhibitors, 14 aqueous solutions (10 wt%) of both inorganic (chlorides, sulphates, nitrates, phosphates, sulphites) and organic (formates, acetates, urea, thiourea) substances were examined. Action of additives on coal was evaluated from heat effect during immersion of the coal in the additive solution. It was found that the most of the studied substances proved immersing heats quite comparable with that of pure water. However, rather chemical action was ascertained for sodium sulphite, phenol, urea and/or thiourea with heat effects several times exceeding heats for pure water.

Název v anglickém jazyce

Calorimetric investigation of chemical additives affecting oxidation of coal at low temperatures

Popis výsledku anglicky

Interactions in the system ?coal - chemical additive - oxygen? were studied at temperature 30°C with the aim to recognise inhibitors of coal oxidation process that are able to modify coal surface in chemical way. Three coals of different rank were tested. As possible inhibitors, 14 aqueous solutions (10 wt%) of both inorganic (chlorides, sulphates, nitrates, phosphates, sulphites) and organic (formates, acetates, urea, thiourea) substances were examined. Action of additives on coal was evaluated from heat effect during immersion of the coal in the additive solution. It was found that the most of the studied substances proved immersing heats quite comparable with that of pure water. However, rather chemical action was ascertained for sodium sulphite, phenol, urea and/or thiourea with heat effects several times exceeding heats for pure water.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

FUEL PROCESS TECHNOL

ISSN

0378-3820

e-ISSN

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Svazek periodika

92

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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