蓄热式氧化炉在无机材料煅烧尾气处理中的应用
Application of regenerative thermal oxidizer (RTO) in calcination exhaust treatment of inorganic materials
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摘要: 分子筛煅烧尾气中含有三乙胺、正丁胺等挥发性有机化合物（VOCs），严重影响厂区及周边环境。为彻底治理有机废气污染，采用三床式蓄热式氧化炉（RTO）处理有机废气，通过优化调整控制工艺，以排烟温度控制法替代原有的排烟时间控制法。结果表明：排烟温度控制法可确保排烟温度保持在设计范围内，有效降低了排烟热损失；蓄热式氧化炉通过吸热-燃烧-放热周期性稳定运行，在天然气平均耗量4.5 m3·h-1的情况下，获得99%以上的VOCs去除效率，达到预期目标。蓄热式氧化法是一种经济、高效、稳定和安全的有机废气处理技术。Abstract: The calcined exhaust of the molecular sieve contains volatile organic compounds (VOCs) such as triethylamine and n-butylamine, which will make serious air pollution to the surroundings. To control the pollution of VOCs thoroughly, a three-bed regenerative thermal oxidizer (RTO) was adopted to dispose VOCs in present project. The original exhaust timing control method was replaced with the exhaust temperature control method by the optimized control process. The result shows that the exhaust gas temperature could be controlled within the design range and the exhaust heat loss could be reduced effectively by the exhaust temperature control method. The RTO operates through endothermic-combustion-exothermic periodically and stably. In the case of natural gas average consumption of 4.5 m3·h-1, the efficiency higher than 99% of VOCs removal was achieved, which exactly meet the desired objective. The regenerative thermal oxidation method could be an organic waste gas treatment technology with features of economy, efficiency, stabilization and safety.
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