基于焦油炉内裂解的生物质气化特性试验

目前生物质气化炉推广应用过程中最主要技术问题是气化炉的原料适应性差、气化气中焦油含量高、产气热值低等。该文提出一种新型的焦油炉内裂解生物质气化炉,通过内置的U型管导气结构及其中填充多孔陶瓷蓄热材料以期促进气化气中携带焦油的裂解。试验研究表明,使用含水率12.3%的麦秸压块原料,其气化气中焦油含量显著降低至0.02～0.06g/m3,平均气化效率可达到61.9%,气化气平均低位热值达到5.0MJ/m3,即,该气化炉的新型结构能够显著降低气化气中的焦油含量,提高气化气热值,提升气化炉的产气品质。

Experiment on biomass gasification characteristics withtar cracking in gasifier

Currently,the mainly technical problems are poor material adaptability,high content of tar and low heat value of product gas during the popularization and application of biomass gasifiers.In this paper,a new biomass gasifier was put forward,in which porous ceramics material inlayed an air guide of U-shaped tube.The experiments results indicated that,when straw stalk of moisture content 12.3%was used,the tar content was reduced to 0.02～0.06 g/m 3,average gasification efficiency could reach up to 61.9%and average low heat value of producer gas was about 5.0 MJ/m 3.The new structure of biomass gasifier is helpful to obtain high quality gas with lower tar content and higher heat value.