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    • 1. 发明公开
    • ONLINE FURNACE DRYING METHOD FOR HEAT-INSULATION NATURAL GAS CATALYTIC OXIDIZING FURNACE
    • 保温天然气催化氧化炉在线烘干方法
    • EP3275835A1
    • 2018-01-31
    • EP16767645.1
    • 2016-02-26
    • Wuhan Kaidi Engineering Technology Research Institute Co., Ltd.
    • CHEN, YilongZHANG, YanfengKUAI, PingyuTIAN, WentangWANG, Daxiang
    • C01B3/38C01B31/18
    • C01B3/40C01B3/386C01B32/40C01B2203/0261C01B2203/1017C01B2203/1082C01B2203/1241C01B2203/1614C01B2203/169
    • Disclosed is an online furnace drying method for a heat-insulation natural gas catalytic oxidizing furnace, comprising: (1) simultaneously introducing oxygen, natural gas and temperature-control gas capable of decreasing a reaction heating rate into a natural gas catalytic oxidizing furnace, controlling a molar ratio of the oxygen to the natural gas at (0.3-0.6): 1, and meanwhile, controlling a molar ratio of the temperature-control gas to raw material gas consisting of the oxygen and the natural gas at (0.1-7):(1.3-1.6); (2) preheating the mixed gas so as to gradually increase the temperature, and stopping the preheating until the temperature reaches an oxidation triggering temperature; and (3) gradually decreasing the molar ratio of the temperature-control gas to the raw material gas, allowing the reaction temperature to increase at a heating rate meeting the requirement of a designed furnace drying curve, and stopping the introduction of the temperature-control gas until the reaction temperature reaches a working temperature. The present invention solves the problem that the temperature rises excessively fast during the furnace heating process, prevents a heat-insulation fire-resisting material from being cracked due to shock heating, and protects the natural gas catalytic oxidizing furnace, so that the natural gas catalytic oxidizing furnace can be stably transitioned to a normal operation state.
    • 本发明公开了一种用于隔热天然气催化氧化炉的在线炉干燥方法,其包括:(1)同时将能够降低反应升温速率的氧气,天然气和温度控制气体引入天然气催化氧化炉,控制 (0.3-0.6):1的氧气与天然气的摩尔比,同时控制温度控制气体与氧气和天然气组成的原料气体在(0.1-7)的摩尔比, :(1.3-1.6); (2)预热混合气体以逐渐升高温度,并停止预热直到温度达到氧化触发温度; (3)逐渐降低温度控制气体与原料气体的摩尔比,使反应温度以满足设计炉干燥曲线要求的升温速率升高,并停止引入温度控制 气体直至反应温度达到工作温度。 本发明解决了炉内加热过程中温度过快上升,防止隔热耐火材料因加热冲击而破裂,保护天然气催化氧化炉的问题,使天然气催化 氧化炉可以稳定地转换到正常运行状态。