Chemical looping combustion (CLC) has inherent separation of the greenhouse gas CO₂ by avoiding direct contact between air and fuel. The transfer of oxygen is realised by metal oxide particles that continuously circulate between the air and fuel reactors. Promising particles are perovskite Mn-based oxygen carrier materials, which have proven their performance at lab-scale. To test these particles at an industrial scale, it is necessary to use more raw materials that are widely and cheaply available in bulk quantities. The development of these Mn-based oxygen carriers by the spray drying method was investigated in this study. Furthermore, the production method is transferred to industrial scale so that several tonnes of oxygen carriers could be produced. The characterization and the performance of these particles at lab and industrial scale is discussed.

Different Mn ores and oxides were selected to study the effect of the used Mn source on the oxygen carrier performance. Particles suitable for chemical looping were made based on diverse Mn sources with different Mn oxidation states. The performance of the oxygen carrier was found to be heavily impacted by impurities in the raw materials. The best performing Mn oxide was selected for up-scaling and each step of the spray drying process was optimized at large scale. The thermal treatment of the particles at tonne scale remains a challenge, but particles with a good mechanical strength, sphericity and sufficient reactivity for methane were manufactured.

化学循环燃烧（CLC）具有固有的温室气体CO ₂分离避免空气和燃料直接接触。氧的转移是通过在空气反应堆和燃料反应堆之间连续循环的金属氧化物颗粒实现的。很有前途的颗粒是钙钛矿锰基氧载体材料，已在实验室规模证明了其性能。为了在工业规模上测试这些颗粒，有必要使用更多的原材料，这些原材料可以大量，廉价地大量购买。本研究研究了通过喷雾干燥法开发这些锰基氧载体的方法。此外，该生产方法已转入工业规模，因此可以生产数吨的氧气载体。讨论了这些颗粒在实验室和工业规模上的表征和性能。

选择了不同的锰矿石和氧化物，以研究所用锰源对氧气载体性能的影响。基于具有不同Mn氧化态的多种Mn源，制备了适用于化学成环的颗粒。发现氧气载体的性能受到原材料中杂质的严重影响。选择性能最佳的Mn氧化物进行放大，并大规模优化喷雾干燥过程的每个步骤。以吨级对颗粒进行热处理仍然是一个挑战，但是制造了具有良好机械强度，球形度和对甲烷具有足够反应性的颗粒。