CAJ | 학술논문

对吉林省几种常见树种颗粒燃料的性能指标进行了测定分析.结果表明,7种颗粒燃料以玉米秸秆颗粒的灰分质量分数最大(11.90%),沙松去皮颗粒的灰分质量分数最低(0.37%);杨木颗粒的去灰分热值最大(20.896kJ/g),其次是椴桦混颗粒(20.885kJ/g),白桦去皮颗粒的去灰分热值大于白桦未去皮颗粒,木质颗粒大于秸秆颗粒.木质颗粒燃料以杂木颗粒燃料的轴向抗压性最强,其轴向载荷值为0.2355kN,其次为沙松去皮颗粒,其轴向载荷值为0.2149kN,白桦未去皮颗粒要强于去皮颗粒;白桦未去皮颗粒燃料的径向抗压性最强,其径向载荷值为0.6402kN,其次为杂木颗粒,其径向载荷值为0.6242kN,白桦未去皮颗粒要强于去皮颗粒.从抗压性角度分析宜选用杂木颗粒.杨木颗粒和杂木颗粒的质量损失率相对于其他4种颗粒较低,分别为0.1316%和0.1438%.椴桦混颗粒燃料的渗水率最大(10.235%),其次为白桦去皮颗粒(10.233%),白桦未去皮颗粒的抗渗水性要强于去皮颗粒.通过不同时间抗渗水性能测试,20h后,6种木质颗粒都呈完全剥落状,但杂木颗粒状态要稍好一些,外型仍呈颗粒状.不同颗粒燃料的去灰分热值、轴向载荷和抗渗水率具有显著差异(t检验,p<0.05).
대길림성궤충상견수충과립연료적성능지표진행료측정분석.결과표명,7충과립연료이옥미갈간과립적회분질량분수최대(11.90%),사송거피과립적회분질량분수최저(0.37%);양목과립적거회분열치최대(20.896kJ/g),기차시단화혼과립(20.885kJ/g),백화거피과립적거회분열치대우백화미거피과립,목질과립대우갈간과립.목질과립연료이잡목과립연료적축향항압성최강,기축향재하치위0.2355kN,기차위사송거피과립,기축향재하치위0.2149kN,백화미거피과립요강우거피과립;백화미거피과립연료적경향항압성최강,기경향재하치위0.6402kN,기차위잡목과립,기경향재하치위0.6242kN,백화미거피과립요강우거피과립.종항압성각도분석의선용잡목과립.양목과립화잡목과립적질량손실솔상대우기타4충과립교저,분별위0.1316%화0.1438%.단화혼과립연료적삼수솔최대(10.235%),기차위백화거피과립(10.233%),백화미거피과립적항삼수성요강우거피과립.통과불동시간항삼수성능측시,20h후,6충목질과립도정완전박락상,단잡목과립상태요초호일사,외형잉정과립상.불동과립연료적거회분열치、축향재하화항삼수솔구유현저차이(t검험,p<0.05).
A study was conducted to determine the fuel performances of seven common biomass pellets in Jilin Province. Results showed that the highest ash content was 11.90% for corn straw, and the lowest was 0. 37% for Abies holophylla pellet. It was also found that Populus simonii pellet had the largest ash-free caloric value (20.896 kJ) , then followed by the mixture of Tilia amurensis, Tilia mandshurica and Betula platyphylla pellet (20. 885 kj) , and the largest ash-free caloric value of wood pellet was larger than that of straw pellet. Ash-free calorific value for peeled B. platyphylla pellet was larger than that for the unpeeled, and the same result was also found in axial load, radial load and water permeability. The largest axial load was 0.235 5 kN for mixed wood pellet, presenting the largest axial counter-pressure, and then followed by peeled A. holophylla pellet (0.214 9 kN). The radial loads were 0. 640 2 kN and 0. 624 2 kN for peeled B. platyphylla pellet and mixed wood pellet, respectively, demonstrating the largest and the second largest radial counter-pressure. Weight loss rate was 0.131 6% and 0. 143 8% for P. simonii pellet and mixed wood pellet, respectively, which were lower than those of other four types of pellets. Mixture of T. amurensis, T. mandshurica, and B. platyphylla pellet exhibited the highest water permeability (10.235 0% ) , and then followed by peeled B. platyphylla pellet (10. 233 0% ). Six types of wood pellets were all deformed after 20 hours of submersion during waterproofing test, except for mixed wood pellet which still remained granular. Different pellet fuels were significantly different in ash-free calorific value, axial load, and rate of impermeability (t-test, p<0.05).