Fluidized bed combustion of petroleum residue with in situ CO₂ capture

ABSTRACT

Emissions of greenhouse gases from direct combustion of petroleum residues and solid fuels are one of the major environmental and public health challenges especially in developing countries. In this paper, we study the effects of operating conditions (system pressure and residence time) and a common catalyst (CaO) on CO₂ yield in a research scale fluidized bed. Results show that the combustion under high-pressure conditions can be used as a technical route to reduce the CO₂ yield. Also, it was found that an increase in minimum fluidization velocity leads to higher CO₂ yield due to a good contact between solid-gas mixtures.

KEYWORDS:

• Fluidized bed
• in situ CO₂ capture
• petroleum residue; residence time
• system pressure