基于响应面分析的辉光等离子体解离CO_(2)的工艺参数优化

Optimization of Process Parameters for CO_(2)Dissociation by Glow Plasma Based on Response Surface Analysis

采用辉光等离子体设备开展了CO_(2)解离及工艺参数优化试验。分别探究CO_(2),CO_(2)/N_(2),CO_(2)/N_(2)/He 3种试验气体中4种因素(时间、电流、体积及温度)对CO_(2)解离效果的影响,采用响应面分析法(RSM)优化并确定了最佳工艺参数,同时研究了3种气体最佳工艺下CO_(2)的解离效果。结果表明:纯CO_(2)解离时间85 min,电流16 mA,温度21℃,体积250 mL;CO_(2)/N_(2)解离时间87 min,电流24 mA,体积54 mL,温度20℃;CO_(2)/N_(2)/He解离时间51 min,电流32 mA,体积288 mL,温度20℃。CO_(2)/N_(2)/He混合气体CO_(2)解离效果最佳,CO_(2)/N_(2)混合气体CO_(2)解离效果次之,纯CO_(2)气体解离效果最差。该结果可为CO_(2)的净化和CO_(2)解离再生O_(2)的研究与应用提供参考。

The CO_(2)dissociation and process parameter optimization experiments were carried out using glow plasma equipment.The effects of four factors(time,current,volume and temperature)on the CO_(2)dissociation effect of the three experimental gases of CO_(2),CO_(2)/N_(2)and CO_(2)/N_(2)/He were investigated,and the response surface analysis method(RSM)was used to optimize and determine the optimal process parameters.At the same time,the dissociation effect of CO_(2)of the three gases under the optimum process was also studied.The results show that the dissociation time of pure CO_(2)is 85 min,the current is 16 mA,the temperature is 21℃,and the volume is 250 mL;the dissociation time of CO_(2)/N_(2)is 87 min,the current is 24 mA,the volume is 54 mL,and the temperature is 20℃;the dissociation time of CO_(2)/N_(2)/He is 51 min,the current is 32 mA,the volume is 288 mL,and the temperature is 20℃.The dissociation effect of CO_(2)of CO_(2)/N_(2)/He mixed gas is the best,followed by the dissociation effect of CO_(2)of CO_(2)/N_(2)mixed gas,and the dissociation effect of CO_(2)of pure CO_(2)gas is the worst.The results can provide a certain reference for the research and application of CO_(2)purification and regeneration of O 2 by CO_(2)dissociation.