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Desulfurization in Co-firing of Sewage Sludge and Wooden Biomass in a Bubbling Fluidized Bed Combustor Under Air and Oxy-fuel Conditions by Pavel Skopec; Jan Hrdlička; Matěj Vodička is a Engineering article available to read on EtoBox.

What is Desulfurization in Co-firing of Sewage Sludge and Wooden Biomass in a Bubbling Fluidized Bed Combustor Under Air and Oxy-fuel Conditions about?

This work presents results of an experimental investigation of a direct addition of Ca-based sorbent for SO2 capture in a bubbling fluidized bed combustion. The fuel of interest was secondary biomass represented by a dried sewage sludge, which was mixed with primary biomass represented by wooden pellets in a weight ratio of 30:70. The performance of this SO2 capture approach is compared in air and oxy-fuel combustion conditions, since the different gas environment in the bed significantly affects the SO2 capture process. The experiments were carried out in an experimental bubbling fluidized bed combustor with a power load of about 30 kW. Sewage sludge is typical for its high ash content and has sufficient dimensions and attrition resistance to create the fluidized bed without the support of external bed materials. However, it typically consists of S-containing organic substances, resulting in the presence of SOX in the off-gas. A reference case was initially conducted without any sorbent addition in order to investigate the effect of sulfur self-retention in the fuel ash. The sulfur retention in the ash reached almost 45 % in air- and up to 55 % under oxy-combustion. In the next ph

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Author

Pavel Skopec; Jan Hrdlička; Matěj Vodička

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)