Combined measurement techniques for fast detection of alkali release in fluidized bed combustion
Paper in proceeding, 2021

This study presents an approach combining three alkali-measuring techniques to quantitatively measure the released alkali compounds during the thermal conversion of biomass and Municipal Solid Waste (MSW) in fluidized bed reactors. The method includes measurements of alkali-containing species in the gas phase, as aerosols, or taken up by the bed material. Two techniques are used for online alkali detection in the flue gas: An In-situ Alkali Chloride Monitor (IACM), and a Surface Ionisation Detector (SID). The third technique is an Electronic Tongue (ET) used for the post-analysis of alkali content in the bed material. These three techniques form a method used to determine the alkali present in gaseous state (IACM), as aerosols (SID), and in the bed material (ET). The use of these techniques can enable the determination of optimal intervals to regenerate the bed material and to avoid bed agglomeration, slagging and fouling, as well as high-temperature corrosion.

Author

Tomas Leffler

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Fredrik Lind

Chalmers, Space, Earth and Environment, Energy Technology

Jesper Liske

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Pavleta Knutsson

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

CFB 2021 - Proceedings of the 13th International Conference on Fluidized Bed Technology

339-344

13th International Conference on Fluidized Bed Technology, CFB 2021
Vancouver, Canada,

Driving Forces

Sustainable development

Areas of Advance

Energy

Subject Categories

Materials Chemistry

Bioenergy

Other Materials Engineering

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8/3/2021 7