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一、前言近几年来,国内外公司开发了许多种对加热炉进行优化控制方案,由单纯烟气的氧含量控制发展到增加对烟气中 CO 的监测,作为反馈控制参数,使加热炉达最高热效率。利用微波感生等离子体(Microwaveln-duced plasma)发射光谱作为气相色谱的检测器是近十年来发展起来的。它是由微波等离子激发系统和光栅分光光度计所组成。从气相色谱柱洗提出来的组分,不断地输入到低压 He 等离子体区内,在约5000—6000℃的热力学的温度下,组分即被全部分裂成为原子,这些被激发的原子就会发射出它们的特性光谱线,经光栅分光光度计分离,选择
I. Introduction In recent years, domestic and foreign companies have developed many kinds of furnaces to optimize the control program, from the simple control of the oxygen content of flue gas to increase the monitoring of flue gas CO, as the feedback control parameters, the heating up to The highest thermal efficiency. The use of microwave induced plasma (Microwaveln-duced plasma) emission spectroscopy as a gas chromatographic detector has been developed over the past decade. It is composed of microwave plasma excitation system and grating spectrophotometer. The components eluted from the GC column are continuously input into the low-pressure He plasma region. At a thermodynamic temperature of about 5000-6000 ° C, the components are all split into atoms, and the excited atoms Emit their characteristic spectral lines, the grating spectrophotometer separation, selection