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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

—

Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

10300 - Physical sciences

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

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

Name of the periodical

Biomass Conversion and Biorefinery

ISSN

2190-6815

e-ISSN

—

Volume of the periodical

1

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

15

Pages from-to

—

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85066872724