An experimental and modeling study on polyoxymethylene dimethyl ether 3(PODE_(3))oxidation in a jet stirred reactor  

作　　者：Zeyan Qiu Anhao Zhong Zhen Huang Dong Han 

机构地区：[1]Key Laboratory for Power Machinery and Engineering,Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Fundamental Research》2022年第5期738-747,共10页自然科学基础研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grants No.52022058,51776124 and 51861135303);the Shanghai Science and Technology Committee(Grant No.19160745400).

摘　　要：Polyoxymethylene dimethyl ether(PODE n,n≥1)is a class of oxygenated fuels containing unique carbon-oxygen chain structure and a promising alternative fuel for diesel engines.In this study,low-temperature oxidation characteristics of PODE_(3) were studied experimentally and numerically.Experiments were performed in a jet-stirred reactor(JSR)at equivalence ratios of 0.5,1.0 and 2.0,in the temperature range of 500 to 950 K,and at atmospheric pressure.Mole fractions of PODE_(3),O_(2),H_(2),CO,CO_(2),CH_(3) OH and C_(1)-C_(2) hydrocarbons were measured by gas chromatograph(GC).Experimental measurements were compared with the simulation results based on two literature low-temperature oxidation models,denoted as the He model and the Cai model,respectively.Good agreement was obtained between the measured and simulated fuel consumption profiles,while a deviation was observed between the experimental and simulation results on the mole fractions of O_(2) and intermediate products at medium temperatures.Reaction pathway analyses based on the two models were performed,revealing that the second O_(2)-addition reaction pathway is more significant in the prediction by the Cai model than that by the He model.Sensitivity analyses pointed out that the most important reactions affecting fuel consumption are the H-abstraction reactions of PODE_(3),and the decomposition of H_(2) O_(2) and the consumption of CH_(2)O become more sensitive at medium temperatures.

关 键 词：Jet-stirred reactor OXIDATION Polyoxymethylene dimethyl ether 3 Chemical kinetics Low temperature 

分 类 号：TQ51[化学工程]