Oxygen Carrier Aided Combustion in Fluidized Bed Boilers in Sweden - Review and Future Outlook with Respect to Affordable Bed Materials
Review article, 2021

Oxygen carriers are metal oxide particles that could potentially enhance both fuel conversion and heat distribution in fluidized bed combustion, resulting in e.g., lowered emissions of unconverted species and better possibilities to utilize low‐grade fuels. A related technology based on fluidized beds with oxygen carriers can separate CO2 without large energy penalties. These technologies are called oxygen carrier aided combustion (OCAC) and chemical‐looping combustion (CLC), respectively. In the past few years, a large number of oxygen carriers have been suggested and evaluated for these purposes, many of which require complex production processes making them costly. Affordable metal oxide particles are, however, produced in large quantities as products and byproducts in the metallurgical industries. Some of these materials have properties making them potentially suitable to use as oxygen carriers. Uniquely for Sweden, the use of oxygen carriers in combustion have been subject to commercialization. This paper reviews results from utilizing low‐cost materials emerging from metallurgical industries for conversion of biomass and waste in semi‐commercial and commercial fluidized bed boilers in Sweden. The paper further goes on to discuss practical aspect of utilizing oxygen carriers, such as production and transport within the unique conditions in Sweden, where biomass and waste combustion as well as metallurgical industries are of large scale. This study concludes that utilizing metal oxides in this way could be technically feasible and beneficial to both the boiler owners and the metallurgical industries.

Waste-to-Energy (WtE)

chemical-looping combustion

oxygen carriers

fluidized bed combustion

slag utilization

oxygen carrier aided combustion

Author

Felicia Eliasson Störner

Chalmers, Space, Earth and Environment, Energy Technology, Energy Technology 2

Fredrik Lind

Chalmers, Space, Earth and Environment, Energy Technology

Magnus Rydén

Chalmers, Space, Earth and Environment, Energy Technology

Applied Sciences (Switzerland)

20763417 (eISSN)

Vol. 11 17 7935

Förbränning av biomassa med Oxygen Carrier Aided Combustion (OCAC)

Swedish Research Council (VR) (2017-04553), 2018-01-01 -- 2021-12-31.

Driving Forces

Sustainable development

Areas of Advance

Energy

Subject Categories

Chemical Process Engineering

Other Chemical Engineering

Bioenergy

Other Materials Engineering

DOI

10.3390/app11177935

More information

Latest update

9/13/2021