Negative CO2 emission from oxy-fuel combustion in CFB boilers
Artikel i vetenskaplig tidskrift, 2023

Oxy-combustion by flue-gas recirculation for CO2 capture is applied to an existing, already CO2-neutral, biomass-fired circulating fluidized bed (CFB) boiler, thus resulting in negative CO2 emissions. The required oxygen concentration is determined by a heat balance, but in an existing plant the volume flow is then reduced as well as the fluidization velocity, which affects the heat transfer. Methods to resolve this problem are investigated. The oxygen is usually proposed to be supplied by air separation; a method that consumes a considerable share of the energy produced in the plant. Here, it is instead suggested to use oxygen produced together with hydrogen in electrolysis by excess wind and solar power.

CO reduction 2

Oxy-combustion

Biomass

Boiler

Circulating fluidized bed

Författare

Bo G Leckner

Chalmers, Rymd-, geo- och miljövetenskap, Energiteknik

Fuel

0016-2361 (ISSN)

Vol. 333 126425

Drivkrafter

Hållbar utveckling

Ämneskategorier

Energiteknik

Kemiska processer

Energisystem

Styrkeområden

Energi

DOI

10.1016/j.fuel.2022.126425

Mer information

Senast uppdaterat

2022-11-01