OCAC for Fuel Conversion Without CO2 Capture

Abstract

As a new concept, oxygen carrier aided combustion (OCAC) technology proposed in 2013 by Chalmers University of Technology’s group, can alleviate the problem of uneven distribution of oxygen in the reactors. In the past 10 years,various research institutions, including Chalmers University of Technology, University of Cambridge, Tsinghua University, Friedrich-Alexander University and University of Nottingham, have conducted a series of studies on OCAC technology. It is worth mentioning that Chalmers University of Technology has complied with most of these studies from laboratory to industry scales. In particular, they carried out a serious of semi-industrial scale experiments in the 12 MWthCFB boiler, which is well-known research boiler. OCAC technology is comprehensively introduced from six aspects: combustion characteristics, NOx/SOx emission, ash-related issues, aging of oxygen carrier, oxygen carrier recovery and physicochemical characteristics of oxygen carrier. In this chapter, allsummarized studies were performed under traditional air-combustion conditions without much consideration of CO2 capture.