CAJ | 학술논문

采用自燃点法,用自制自燃点测定仪在考察标准燃料自燃点与十六烷值( CN)的线性关系成立的基础上,在复配生物柴油(即麻风树种子油经添加黏度调整剂和改进剂等复配而成)中添加硝酸正丁酯( NBN)、草酸正丁酯( DNBO)、氢过氧化叔丁烷( TBHP)以及三者两两复配的CN改进剂,实验结果表明：单一的CN改进剂添加量为0.1%~1.0%时,能有效提高复配生物柴油的CN 15~25个单位；单一添加时以NBN效果最好,当其添加量为0.6%,则复配生物柴油的CN由27提高到50。复配CN改进剂,DNBO与TBHP复配有协同增效作用,当其复配比例为1∶9~9∶1,添加量为0.6%时,复配生物柴油的CN为52~54；而NBN与DNBO的复配无协同效应。在自燃点测定及其计算CN的指导下,用单缸柴油机验证CN预测及添加改进剂的效果,结果表明：自燃点测定预测燃料的十六烷值的方法是可行的。
채용자연점법,용자제자연점측정의재고찰표준연료자연점여십륙완치( CN)적선성관계성립적기출상,재복배생물시유(즉마풍수충자유경첨가점도조정제화개진제등복배이성)중첨가초산정정지( NBN)、초산정정지( DNBO)、경과양화숙정완( TBHP)이급삼자량량복배적CN개진제,실험결과표명：단일적CN개진제첨가량위0.1%~1.0%시,능유효제고복배생물시유적CN 15~25개단위；단일첨가시이NBN효과최호,당기첨가량위0.6%,칙복배생물시유적CN유27제고도50。복배CN개진제,DNBO여TBHP복배유협동증효작용,당기복배비례위1∶9~9∶1,첨가량위0.6%시,복배생물시유적CN위52~54；이NBN여DNBO적복배무협동효응。재자연점측정급기계산CN적지도하,용단항시유궤험증CN예측급첨가개진제적효과,결과표명：자연점측정예측연료적십륙완치적방법시가행적。
The establishment of cetane number( CN) with simple methodology is important in direct utilization of vegetable oils as diesel fuel. By using the method of measuring self-ignition temperature on the basis of linear relation between self-ignition point and CN,the improvement and measurement of the CN of the compound biodiesel was performed by adding the CN improvers such as n-butyl nitrate ( NBN ) , di-n-butyl oxalate ( DNBO ) , tert-butyl hydroperoxide ( TBHP ) , and both of compounds. The results showed that the CN of the compound biodiesel could be effectively increased by 15 -25 via adding CN with the amount of 0. 1% -1. 0%. n-Butyl nitrate was the most effective improver in three compounds. When the addition of NBN was 0. 6 %,the CN of compound biodiesel increased from 27 to 50. The synergistic effect was proved by compound experiment of DNBO and TBHP,the CN of the compound biodiesel increased to 52-54 by the adding amount of 0. 6 % with the ratio of the proportion changing from 1∶9 to 9∶1. DNBO and NBN didn′t have synergistic effect. Under the guidance of self-ignition point measurements and the calculative CN, the effect of improving the CN and the prediction utility of the CN were verified by the combustion situation of single cylinder diesel. It was shown that this method is feasible.