甲醇装置改制氢燃料系统安全运行的优化措施

Optimization Measure for Fuel System's Safe Operation When Methanol Device Converted into Hydrogen Production Device

甲醇装置改制氢后,转化炉燃料系统无法做到燃料气手阀全开,无法通过火嘴前背压来控制炉温,火焰大小不一致导致炉膛内部温度分布不均匀,极大地影响了炉管的使用寿命,给装置平稳运行带来风险。通过在燃料气火嘴分支阀后增加限流孔板,炉内火焰燃烧效果有了很大的改善,炉管温度分布均匀。炉管内的转化反应效率也有所提高,转化炉内甲烷转化率及氢气产率提高,大大提高了经济效益。

When the methanol device was converted into hydrogen production device, the manual valve can＇t be fullyopened in the fuel system of Conversion furnace, it also can＇t got through the pressure of fire mouth to control the furnacetemperature, the flame size had different result in uneven temperature distribution inside the furnace, and greatlyinfluenced the service life of furnace tube, brought risk of the device running safely and smoothly. Through increased therestriction orifice in the fuel gas burner branch, the combustion effect of the flame in the furnace got a lot of improvement,the temperature of furnace tube was well-distributed. Conversion reaction efficiency of the furnace tube had a great ofimprovement. The conversion of methane and hydrogen yield in the conversion furnace also had a great of improvement,greatly improved the economic performance.