高温无氧重整与重整燃料可用能  

High Temperature Oxygen-Free Reforming and Exergy of Reformed Fuel

作　　者：林章磊 闫峰[1] 余浩[1] 刘威威[1] 苏万华[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《内燃机学报》2017年第2期97-103,共7页Transactions of Csice

基　　金：国家自然科学基金资助项目(51236005)

摘　　要：为降低内燃机燃烧过程燃料可用能损失,提出了高温无氧燃料重整的方法.通过主动流动式高温定压流动反应试验系统对正庚烷和汽油表征组分两种燃料的重整可行性进行了验证.使用气相色谱仪(GC)测量了重整产物的摩尔浓度,并与详细动力学机理计算结果进行了对比.模拟计算了重整燃料分子的化学可用能增益与分布、燃料燃烧过程可用能损失.结果表明:试验测得的重整产物摩尔浓度与计算结果一致.重整时间一定时,燃料重整存在一个最佳重整温度区.在1,050~1,150,K温度下重整100~400,ms,正庚烷化学可用能可提升约3%,,汽油表征组分化学可用能可提升约1.5%,.经过重整,燃料燃烧过程可用能损失明显降低.A new method of high temperature oxygen-free fuel reforming was proposed to reduce the exergy loss during the combustion process of internal combustion engine. An active-type high-temperature constant-pressure flow reactor was used to study the reforming of n-heptane and gasoline-surrogate. The results were compared with the corresponding calculation results. The gaining, distribution and loss of the chemical exergy of the fuel during the combustion process were studied. The results show a great agreement between the experiment and the calculation. For a constant reforming time, an optimal reforming temperature region exists for the two fuels. When reforming at a temperature of 1 050-1 150 K for a time of 100-400 ms, the chemical exergy of the n-heptane fuel gains about 3% and the chemical exergy of gasoline-surrogate increases by 1.5%. By reforming, the exergy loss during the combustion process reduces evidently.

关 键 词：燃料重整 可用能 损失 正庚烷 汽油表征组分 

分 类 号：TK16[动力工程及工程热物理—热能工程]