CAJ | 학술논문

通过改进及优化激光拉曼光谱仪的相关性能，得到了较稳定的激光拉曼光谱基线；考察了环境温度、积分时间和测试压力等因素对激光拉曼光谱响应信号的影响，并对实验条件进行了优化；采用激光拉曼光谱仪对乙烯装置裂解气中的6种基础气体H2，CH4，C2H4，C2H6，C3H6，C3H8的含量进行了测定。实验结果表明，优化的实验条件为环境温度23.5℃、积分时间25 s、测试压力0.5 MPa；在优化的实验条件下，激光拉曼光谱法的分析结果与气相色谱法的分析结果大致相当，且两种方法的重复性实验的相对标准偏差均小于2%，表明激光拉曼光谱法具有较好的重复性。相对于气相色谱法，激光拉曼光谱气体分析法有利于加快分析数据的反馈速度，并降低分析成本。
통과개진급우화격광랍만광보의적상관성능，득도료교은정적격광랍만광보기선；고찰료배경온도、적분시간화측시압력등인소대격광랍만광보향응신호적영향，병대실험조건진행료우화；채용격광랍만광보의대을희장치렬해기중적6충기출기체H2，CH4，C2H4，C2H6，C3H6，C3H8적함량진행료측정。실험결과표명，우화적실험조건위배경온도23.5℃、적분시간25 s、측시압력0.5 MPa；재우화적실험조건하，격광랍만광보법적분석결과여기상색보법적분석결과대치상당，차량충방법적중복성실험적상대표준편차균소우2%，표명격광랍만광보법구유교호적중복성。상대우기상색보법，격광랍만광보기체분석법유리우가쾌분석수거적반궤속도，병강저분석성본。
A stable laser Raman spectrum baseline was obtained by improving and optimizing the performances of the laser Raman spectrometer. The effects of environmental temperature,integration time and test pressure on the Raman signals were investigated. 6 Basic components in pyrolysis gas, namely H2,CH4,C2H4,C2H6,C3H6 and C3H8,were determined by means of the laser Raman spectrometer. It was showed that,under the optimal conditions of environmental temperature 23.5℃,integration time 25 s and test pressure 0.5 MPa,the results analyzed by GC and the laser Raman spectrometer were roughly equivalent,and all the relative standard deviations of the two methods were smaller than 2%,which meant the established Raman analysis method had good repeatability. Compared to the GC analysis,the laser Raman spectroscopy can improve the data feedback speed and reduce the analysis cost.