Performance of an oxy-polishing step in the 100 kWth chemical looping combustion prototype

Unconverted fuel gases are normally present in the gas leaving reactor of a Chemical Looping Combustion (CLC) process. Depending on several factors, including oxygen carrier and volatiles content, unconverted represent 5–30% needed for full combustion. Further conversion these components is imperative to achieve adequate combustion fulfill requirements CO2 storage. An oxy-polishing step using highly concentrated O2 fully oxidize offers straightforward one-step way reach complete However, systematic detailed investigation lacking while it essential design, scale up optimization. In this work, studied post-oxidation chamber (POC) 100 kWth unit different solid fuels manganese ores CLC With various flows air as oxidation agent, POC performance was evaluated under stable operations wide range operating conditions. overall ratio defined analyze effect excess POC. Experimental results show that from can be greatly enhanced by entering POC, with being improved 87 90% before high 99–100% after Full accomplished O2. For cases incomplete oxidation, CO found higher concentrations than CH4. few close optimum, simultaneously have normalized below 0.5–1% low around 1.01. The further compared simple model.