大茎植物蒿的田间研究(A.dubia)自2018年以来一直在LAMMC的V种种aičiai分支机构进行。根据三年的实验结果,年干物质(DM)产量从7.94到10.14tha-1不等。生长条件,施氮水平,和收割时间对杜氏芽孢杆菌的生产率有统计学上的显著影响。本文最重要的任务是调查和确定影响杜仲草植物生物量生产力的因素和技术评价,电源,以及植物生物质利用能源转化和生产高质量固体生物燃料颗粒的环境参数。对于实验,使用了六种A.dubia样本的变体,生长于2021年。将植物切割三次,并使用两种施肥选择:(1)不施肥和(2)用180kgha-1的氮肥施肥。这些收获的植物被切碎,碾磨,并压成颗粒。物理机械特性(水分含量,密度,和强度)。在这项研究中,发现颗粒的干重(DM)密度范围为1119.86至1192.44kgm-3。颗粒水分含量范围为8.80至10.49%。在测试颗粒强度之后,结果发现,由植物生物量PK-1-1(首次收获不含氮肥)制成的颗粒对压缩的抵抗力最强,他们承受了560.36N的压力。颗粒的干燃料低热值(LHV)足够高,并且非常接近松木屑颗粒;它从17.46±0.25MJkg-1变化到18.14±0.28MJkg-1。燃烧颗粒的灰分含量范围为3.62±0.02%至6.47±0.09%。有害污染物的排放-CO2,CO,NOx,和未燃烧的碳氢化合物(CxHy)-不超过最大允许水平。总结A.dubia颗粒的燃烧和排放特性的研究结果,可以得出结论,这种生物燃料可以用于生产压制的生物燃料,它的特点是质量足够高,高效燃烧,以及对环境的允许排放。
Field studies with the large-stemmed plant Artemisia dubia (A. dubia) have been carried out at the Vėžaičiai Branch of LAMMC since 2018. According to three years of experimental results, annual dry matter (DM) yield varied from 7.94 to 10.14 t ha-1. Growing conditions, nitrogen application level, and harvesting time had statistically significant impacts on A. dubia productivity. The most important tasks of this article were to investigate and determine the factors influencing A. dubia plant biomass productivity and the evaluation of technological, power, and environmental parameters of plant biomass utilization for energy conversion and the production of high-quality solid biofuel pellets. For the experiments, six variants of A. dubia samples were used, which were grown in 2021. Plants were cut three times and two fertilization options were used: (1) no fertilization and (2) fertilization with 180 kg ha-1 of nitrogen fertilizer. These harvested plants were chopped, milled, and pressed into
pellets. The physical-mechanical characteristics (moisture content, density, and strength) of the A. dubia pellets were investigated. During this study, it was found that the density in the dry mass (DM) of the pellets ranged from 1119.86 to 1192.44 kg m-3. The pellet moisture content ranged from 8.80 to 10.49%. After testing pellet strength, it was found that the
pellets which were made from plant biomass PK-1-1 (first harvest without N fertilization) were the most resistant to compression, and they withstood 560.36 N of pressure. The dry fuel lower heating value (LHV) of the
pellets was sufficiently high and was very close to that of the pine sawdust
pellets; it varied from 17.46 ± 0.25 MJ kg-1 to 18.14 ± 0.28 MJ kg-1. The ash content of the burned
pellets ranged from 3.62 ± 0.02% to 6.47 ± 0.09%. Emissions of harmful pollutants-CO2, CO, NOx, and unburnt hydrocarbons (CxHy)-did not exceed the maximum permissible levels. Summarizing the results for the investigated properties of the combustion and emissions of the A. dubia pellets, it can be concluded that this biofuel can be used for the production of pressed biofuel, and it is characterized by sufficiently high quality, efficient combustion, and permissible emissions to the environment.