CAJ | 학술논문

为了解某生物质电厂燃用的桉树枝的碱金属迁移规律,对其进行了燃烧实验研究。实验样品为粒径180μm的桉树枝颗粒,在管式燃烧器中进行燃烧重复实验,获得不同温度和燃烧时间下的残留物样品,然后对残留物进行工业分析,获得挥发分、固定碳的燃烧规律；实验结果表明桉树枝碱金属挥发性很强,高温燃尽时有87%的钾释放进入气相,碱金属的析出随温度的增高而加快,析出总量也随温度和停留时间而增加。另外,以高岭土作为添加剂,定量分析了其对桉树枝碱金属在灰渣中的固留率的影响,分析结果表明高岭土对桉树枝的碱金属有很好固留作用,5%的高岭土添加量固留效果最佳。
위료해모생물질전엄연용적안수지적감금속천이규률,대기진행료연소실험연구。실험양품위립경180μm적안수지과립,재관식연소기중진행연소중복실험,획득불동온도화연소시간하적잔류물양품,연후대잔류물진행공업분석,획득휘발분、고정탄적연소규률；실험결과표명안수지감금속휘발성흔강,고온연진시유87%적갑석방진입기상,감금속적석출수온도적증고이가쾌,석출총량야수온도화정류시간이증가。령외,이고령토작위첨가제,정량분석료기대안수지감금속재회사중적고류솔적영향,분석결과표명고령토대안수지적감금속유흔호고류작용,5%적고령토첨가량고류효과최가。
For knowing alkali metal migration law in eucalyptus branches burned in some biomass power plant,this paper studies it by combustion experiment.The experimental sample is eucalyptus branch particle with grain size of 1 80μm which is used for repeat combustion experiment in pipe burner in order to get residual samples under different temperatures and with different combustion time.By proximate analysis on residual samples,it is able to get combustion laws of volatiles and fixed carbon.The experimental result shows that volatility of alkali metal in eucalyptus branches is very strong and there is 87%potassium released into gas phase in process of high temperature burning.Meanwhile,precipitation of alkali metal is speeding up with increase of temperature and precipitation volume dose is increasing with temperature and stop time.In addition,tak-ing kaolin as additive,it conducts quantitative analysis on its impact on retention rate of alkali metal in ash.The analysis re-sult indicates that kaolin has very good retention role for alkali metal in eucalyptus branches and retention effect of 5% kao-lin is the best.