生物质燃气中固体颗粒物的临氧燃烧机理

PARTIAL OXIDATION MECHANISM OF SOLID PARTICULATE MATTER FROM BIOMASS PRODUCTER GAS

在陶瓷过滤器中,研究模拟生物质空气气化燃气(SPG)通过高温固体颗粒物层时颗粒物临氧燃烧反应及其机理。结果表明:在颗粒层温度为400℃,燃气含氧量为2%的条件下,生物质气化固体颗粒物(PBG)发生明显临氧燃烧反应,可促进过滤压力的迅速降低,但燃气热值降幅不超过1%。FTIR烃—CH_2—官能团的脱出以及含氧官能团的生成,结合XRD烧反应。

The partial oxidation mechanism of particulate matter was studied when the simulated biomass producer gas(SPG) passes through the high temperature solid particle layer in ceramic filter. The results show that when the temperature of particle layer is 400 ℃ and the oxygen content of SPG gas is 2%,the solid particulate matter produced from biomass gasification(PBG)undergoes significant partial oxidation reaction,and promotes the rapid reduction of filtration pressure,but the calorific value of gas does not fall by more than 1%. The FTIR analysis shows that the reaction mechanism is the release of cycloalkanes and aliphatic hydrocarbons functional groups(—CH2—)and the formation of oxygen-containing functional groups,combining with XRD analysis,the results show that PBG particles containing tarlike substances are more prone to oxygen combustion reaction.