Dry additive desulfurization in oxyfuel bubbling fluidized bed combustor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00346820" target="_blank" >RIV/68407700:21220/21:00346820 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.fuel.2020.118945" target="_blank" >https://doi.org/10.1016/j.fuel.2020.118945</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fuel.2020.118945" target="_blank" >10.1016/j.fuel.2020.118945</a>

Result language

angličtina

Original language name

Dry additive desulfurization in oxyfuel bubbling fluidized bed combustor

Original language description

This work presents research results of direct sorbent addition for SO2 capture from a lignite coal combustion in a bubbling fluidized bed (BFB). SO2 capture ratio in air and in full oxyfuel combustion conditions is compared in real environment, using a 30 kW BFB combustor. The first part studies the sulfur self-retention in the fuel ash. It shows significantly more efficient SO2 capture increase from 15% in air conditions to 45% in oxyfuel conditions. The next part concerns evaluation of optimal temperature for the SO2 capture and a sorbent performance is evaluated in the last part. Two varieties of sorbents based on CaCO3 were used, differing significantly in purity, geological age and BET surface area. The optimal fluidized bed temperature for SO2 capture was for air combustion about 840 degrees C and for oxyfuel combustion about 880 degrees C. The sorbent performance was studied at three different Ca/S molar ratios (1.5, 3 and 5). The results show the fundamental differences between air and oxyfuel conditions in real combustion environment, and also reveal the differences between the sorbents. In general, significantly higher SO2 capture ratio was reached in oxyfuel conditions. At Ca/S equal to 5, it is possible to reach the SO2 capture as high as 98% in oxyfuel mode. The BET surface of the sorbent is important mainly at lower Ca/S molar ratios. The difference in SO2 capture between the sorbents is below 10% relative at Ca/S molar ratio 3 and it further decreases with increasing Ca/S ratio.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20704 - Energy and fuels

Project

<a href="/en/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Research centre for low-carbon energy technologies</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

Fuel

ISSN

0016-2361

e-ISSN

1873-7153

Volume of the periodical

283

Issue of the periodical within the volume

118945

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

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UT code for WoS article

000584919700107

EID of the result in the Scopus database

2-s2.0-85089516280