Sun Shaozeng, Zhao Yijun, Tian Hongming, Ling Feng, Su Fengming
Combustion Engineering Research Institute, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, PR China.
Bioresour Technol. 2009 Sep;100(17):4047-9. doi: 10.1016/j.biortech.2009.01.031. Epub 2009 Apr 5.
In this paper, effects of the equivalence ratio (ER) and the secondary air on the gasification system were studied. The results indicate that as the ER varies in the range of 0.20-0.26, the low heating value (LHV) of the producer gas is in the range of 3.64-5.76 MJ/Nm(3), the carbon conversion is 55%-67% and the cold gas efficiency of the gasification system is 33%-47%. In contrast to the gasification without the secondary air, air staged process is a gasification method capable of increasing the LHV of the producer gas from 4.63 to 5.67 MJ/Nm(3), the carbon conversion from 65.5% to 81.2%, and the cold gas efficiency of the gasifier from 42.5% to 56.87%, while the tar content of the producer gas decreases from 13.96 to 5.6g/Nm(3). There exists an optimum ratio of the secondary air.
本文研究了当量比（ER）和二次风对气化系统的影响。结果表明，当当量比在0.20 - 0.26范围内变化时，发生炉煤气的低位热值（LHV）在3.64 - 5.76 MJ/Nm³范围内，碳转化率为55% - 67%，气化系统的冷煤气效率为33% - 47%。与无二次风气化相比，空气分级过程是一种能够将发生炉煤气的低位热值从4.63提高到5.67 MJ/Nm³、碳转化率从65.5%提高到81.2%、气化器冷煤气效率从42.5%提高到56.87%的气化方法，同时发生炉煤气的焦油含量从13.96降至5.6 g/Nm³。二次风存在一个最佳比例。
