生物质鼓泡床富氧-水蒸气定向气化实验研究

EXPERIMENTAL STUDY ON BIOMASS OF BUBBLING TESTBED WITH STEAM-OXYGEN ENRICHED AIR GASIFICATION OF DIRECTIONAL

以制备合成气为目标，采用自供热鼓泡床对木屑进行提高H／C的富氧．水蒸气定向气化实验。分析当量比（ER）、水蒸气配比（S／B）、富氧浓度（OC）变化时对产气各组分及H2／CO（H／C）的影响。结果表明：相同O2浓度和水蒸气配比条件下，当量比在一定范围内越高，H／C越高；产气H／C主要受水蒸气配比和O2浓度的影响；自供热鼓泡床富氧－水蒸气气化工艺中，制备合成气最佳工艺条件：O2浓度为60％-70％、当量比为0．33．0．38、水蒸气配比约为0．56，对应最佳H／C为1．13。

Considering synthesis gas preparation as the target, the experiment on the gasification of sawdust with steamoxygen enriched air is carried out in a bubbling fluidized bed with the directional target of improving the H/C. The effect of air equivalence ratio （ER）, steam to biomass ratio （ S/B ） and oxygen H2/CO （H/C）were investigated. Results showed that under the condition concentration （ OC ） on the gas compositions and of same OC and S/B, the higher the ER within a certain range, the wider the experiment of S/B affordable range is, the higherthe target parameter H/C are ; The H/C is mainly affected by S/B and OC ; In theself-heating bubbling bed with steam-oxygen enriched air gasification process, the optimum process conditions for synthesis gas is ： OC in the range of 60%-70%, ER in the range of 0.33-0.35, S/B is about 0.56, thecorresponding optimum H/C is 1.13.