摘要
以下吸自热式固定床为反应器,对生物质废弃物花生壳(Peanut hull)和桉木废弃物(Eucalypt chip)以及它们与甘蔗渣(Bagasse)混合物的空气气化特性进行了研究。实验主要考察了空气流量对气化结果的影响,并测定了实验过程中气化反应器各个反应层的温度分布。在实验条件变化范围内(ER=0.24～0.36),花生壳、桉木片气化产气的低位热值分别在5400～5900kJ·m^(-3)、4900～5300kJ·m^(-3)范围内变化,气体产率在1.80～2.30Nm^3·kg^(-1)之间变化。二者产气的热值随ER的增加均出现一个先增后减的过程。在花生壳、桉木片混合甘蔗渣(P+B,E+B)的物料气化中,随B/P、B/E比的增加,产气中H_2、CO均呈减少趋势,N_2呈增加趋势,产气热值随之下降。选择1∶2作为以上物料的混合比较适合稳定气化。
An experimental investigation of a downdraft fixed bed gasifier with air as gasifying agent was carried out using peanut hull, eucalypt chip and their mixture with bagasse The effect of air flow rate on gasification result was investigat- ed and the temperature in different reaction area in the gasifier were measured. Under the examined experimental condi- tion （ ER = 0.24 - 0.36）, the lower calorific values of product gas for peanut hull and eucalypt chip vary in the range of 5400- 5900 k J· m-3, 4900- 5300 kJ· m-3, respectively, which shows a trend of firstly increasing and then decreasing with ER increasing. The gas yield is in a variation of 1.80 - 2.30 Nm3 · kg- 1. For the gasification of bagasse blended with peanut hull or eucalypt chip （B ＋ P, B ＋ E）, there are decreasing trends for the H2, CO components of product gas, and a opposite trend for N2 while the B/P, B/E ratio increasing. The lower heating value of product gas possesses a opposite trend with the B/P, B/E ratio. For steady gasification, choosing（1：2） as B/P, B/E ratio is more favorable.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2009年第8期1118-1123,共6页
Acta Energiae Solaris Sinica
基金
广东省科技攻关项目(2002C20809
2004B50101001)
关键词
固定床
花生壳
桉木片
甘蔗渣
混合气化
fixed bed
peanut hull
eucalypt chip
bagasse
blending gasification
