The addition of dolomite to the combustion of biomass fuel forms: the study of ashes agglomeration and fusibility

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27730%2F19%3A10242562" target="_blank" >RIV/61989100:27730/19:10242562 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.sagepub.com/doi/full/10.1177/0144598719875272" target="_blank" >https://journals.sagepub.com/doi/full/10.1177/0144598719875272</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s13399-019-00438-w" target="_blank" >10.1007/s13399-019-00438-w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The addition of dolomite to the combustion of biomass fuel forms: the study of ashes agglomeration and fusibility

Popis výsledku v původním jazyce

The combustion of biomass often leads to the formation of agglomerated deposits. The problems related to ash agglomeration may be reduced by added dolomite. The occurrence of agglomeration may be indicated by the mass ratio of the formed silicates and inert material. Excess alkali oxides may sublimate and form deposits in the duct systems and on heat transfer surfaces. We used optical microscopy and photography to document the changes during the combustion tests of five types of biomass (hay, rice husk, spruce, miscanthus, and wheat straw) under different temperatures and with/out added dolomite. In rice husk the ratio of alkali metals and SiO2 approaches the stoichiometry of the reaction of K2Si4O9 formation. The mass ratio of the silicate and inert ash approaches 1 and agglomeration does not occur. The fusing point of ash exceeds 1200 oC. To prevent agglomeration in combusting spruce and miscanthus, it is convenient to add 2 wt% of dolomite for the temperature of 1180 oC. In the case of wheat straw, 2 wt% of dolomite should be dosed for 900 oC, 5 wt% for 1000 oC, and 10 wt% for 1100 and 1180 oC. In hay, it is suitable to add 2 wt% of dolomite for the temperature of 1000 oC, 5 wt% for 1100 oC, and 10 wt% for 1180 oC. In all the cases, the addition of dolomite ensures the ratio of silicate and inert material to be below 1, and agglomeration is avoided. (C) 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

Název v anglickém jazyce

The addition of dolomite to the combustion of biomass fuel forms: the study of ashes agglomeration and fusibility

Popis výsledku anglicky

The combustion of biomass often leads to the formation of agglomerated deposits. The problems related to ash agglomeration may be reduced by added dolomite. The occurrence of agglomeration may be indicated by the mass ratio of the formed silicates and inert material. Excess alkali oxides may sublimate and form deposits in the duct systems and on heat transfer surfaces. We used optical microscopy and photography to document the changes during the combustion tests of five types of biomass (hay, rice husk, spruce, miscanthus, and wheat straw) under different temperatures and with/out added dolomite. In rice husk the ratio of alkali metals and SiO2 approaches the stoichiometry of the reaction of K2Si4O9 formation. The mass ratio of the silicate and inert ash approaches 1 and agglomeration does not occur. The fusing point of ash exceeds 1200 oC. To prevent agglomeration in combusting spruce and miscanthus, it is convenient to add 2 wt% of dolomite for the temperature of 1180 oC. In the case of wheat straw, 2 wt% of dolomite should be dosed for 900 oC, 5 wt% for 1000 oC, and 10 wt% for 1100 and 1180 oC. In hay, it is suitable to add 2 wt% of dolomite for the temperature of 1000 oC, 5 wt% for 1100 oC, and 10 wt% for 1180 oC. In all the cases, the addition of dolomite ensures the ratio of silicate and inert material to be below 1, and agglomeration is avoided. (C) 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10300 - Physical sciences

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)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Biomass Conversion and Biorefinery

ISSN

2190-6815

e-ISSN

—

Svazek periodika

1

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85066872724