Abstract Environmentally safe fuel combustion is an actual worldwide problem. The alternative technology of combustion in fluidized bed of catalyst was developed in the Boreskov Institute of Catalysis. The technology allows one to conduct the process at 400–700 оC and significantly reduce outlet concentrations of toxic compounds. However, the use of sulfur oils as fuel demands solving a problem of the decreasing the outlet SO2 concentration because the oils contain small amount of ash to absorb SO2. The work is devoted to study features of sulfur light oil and high-sulfur heavy oil combustion in the fluidized bed of the Al–Cu–Cr-oxide catalyst. Reduction of SO2 emission at conserving oxidation degree of oils within range of 99.5–99.8% might be reached by using a non-isothermal temperature profile in the reactor as well as a use of CaCO3 or CaO at Ca/S > 2 to absorb sulfur oxides. The non-isothermal temperature profile in the reactor consisted of an oxidation zone with the temperature in the fluidized bed of 700 оC and a catalytic oxidation of SO2 to SO3 zone with equilibrium shift to reducing SO2 concentration because of the temperature change from 700 оC to 585 оC.

中文翻译：

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流化床中含硫液体燃料的催化燃烧：实验与建模

摘要 环境安全的燃料燃烧是一个现实的世界性问题。Boreskov 催化研究所开发了催化剂流化床燃烧替代技术。该技术允许在 400–700 ºC 下进行该过程并显着降低有毒化合物的出口浓度。但是，使用硫油作为燃料需要解决出口SO2浓度降低的问题，因为油中含有少量的灰分以吸收SO2。主要研究含硫轻油和高硫重油在Al-Cu-Cr-氧化物催化剂流化床中的燃烧特性。在保持油品氧化度在 99.5-99 范围内时减少 SO2 排放。通过在反应器中使用非等温温度曲线以及在 Ca/S > 2 下使用 CaCO3 或 CaO 来吸收硫氧化物，可以达到 8%。反应器中的非等温温度分布由流化床温度为 700 ºC 的氧化区和 SO2 催化氧化为 SO3 区组成，由于温度从 700 ºC 变为 585 ℃，因此平衡移动以降低 SO2 浓度○C。