摘要:
关键词: 废催化剂 / 直接加热 / 热脱附 / 回转炉
Abstract: The problems existing in the counter-flow process system were analyzed in view of the hidden safety hazards of spent catalyst projects. The lean oxygen flue gas de-oiling is demonstrated. First of all, the material properties were analyzed via aluminum retort analysis; then the tubular furnace was adopted for analysis of material properties, and then the flue gas oxygen content and temperature and the outlet temperature of he material as well as its residence time were determined to ensure safe de-oiling. The results showed that when the oxygen content of flue gas was controlled at 5%, the outlet temperature of the material was controlled at 570℃, and the residence time was more than 1.5h, the de-oiling efficiency could go beyond 99, 99%, and continuous safe production could be achieved.
Keywords: spent catalyst / direct heating / thermal desorption / rotary kiln
针对废催化剂项目的安全隐患，分析该逆流式工艺系统存在的问题，论证贫氧烟气脱油技术。首先采用铝甑分析物料的特性，再采用管式炉分析物料的特性，然后确定烟气含氧量、温度，物料的出口温度及停留时间，保证安全脱油。结果表明，烟气含氧量控制在 5%，物料出口温度控制在 570℃，停留时间 1.5h以上时，脱油效率可达99.99%以上，能连续安全生产。
关键词: 废催化剂 / 直接加热 / 热脱附 / 回转炉
Abstract: The problems existing in the counter-flow process system were analyzed in view of the hidden safety hazards of spent catalyst projects. The lean oxygen flue gas de-oiling is demonstrated. First of all, the material properties were analyzed via aluminum retort analysis; then the tubular furnace was adopted for analysis of material properties, and then the flue gas oxygen content and temperature and the outlet temperature of he material as well as its residence time were determined to ensure safe de-oiling. The results showed that when the oxygen content of flue gas was controlled at 5%, the outlet temperature of the material was controlled at 570℃, and the residence time was more than 1.5h, the de-oiling efficiency could go beyond 99, 99%, and continuous safe production could be achieved.
Keywords: spent catalyst / direct heating / thermal desorption / rotary kiln