ABSTRACT

In this study, cotton and sesame stalks that are grown regionally and burned in coarse form as a source of heat energy form in the current application are used as pellet raw materials. Although these residues are used as biomass raw materials in different forms, there is limited information about their use as pellets. In order to compare the production efficiency and physical properties of the pellets obtained, production capacity, specific energy consumption, bulk density, particle density, durability, compression resistance, specific compression resistance, and tensile strength tests have been applied. In the moisture content ranges pellet durability, bulk density, particle density and tensile strength were achieved as 89–98%, 430–695 kg/m³, 921–1367 kg/m³, 2.83–7.28 Mpa for cotton stalk pellets, and 93–97%, 510–660 kg/m³, 4.26–5.85 Mpa for sesame stalk pellets, respectively. 20% pelletizing moisture for both stalks increased pellet production capacity, reduced energy consumption, but affected negatively their physical structures. It was concluded that the ideal pelleting moisture values for cotton stalks and sesame stalks were 10% and 15%, respectively. During combustion experiments, O₂, CO₂, CO, and NO_x emissions, flue gas temperature, and combustion efficiency were observed. According to the results of combustion experiments, CO and NO_x emissions were found to be 1646 ppm and 50 ppm for cotton stalks, 2862 ppm and 134 ppm for sesame stalks, respectively. High O₂ emission values (18–19%) were observed for both pellets.

摘要

在这项研究中，将棉花和芝麻秸秆作为颗粒原料使用，这些棉花和芝麻秸秆在当地种植，并以粗形式燃烧，作为当前应用中的热能形式。尽管这些残留物以不同形式用作生物质原料，但有关它们作为颗粒用途的信息有限。为了比较所得粒料的生产效率和物理性质，已经进行了生产能力，比能耗，堆积密度，颗粒密度，耐久性，抗压性，比抗压性和拉伸强度测试。中的水分含量为丸的耐久性，堆积密度，颗粒密度和拉伸强度取得的89-98％，430-695千克/米³，921-1367千克/米³，2.83-7.28兆帕棉秆粒料，和93-97％，510-660千克/米³，4.26-5.85兆帕芝麻秆粒料，分别。两种秸秆的制粒水分含量均为20％，可提高制粒能力，降低能耗，但会对它们的物理结构产生负面影响。结论是，棉秸秆和芝麻秸秆的理想制粒水分值分别为10％和15％。在燃烧过程中的实验，O- ₂，CO ₂，CO和NO _X排放量，烟气温度，并且观察到的燃烧效率。根据燃烧实验结果，CO和NO _x棉秸秆的排放量分别为1646 ppm和50 ppm，芝麻秸秆的排放量分别为2862 ppm和134 ppm。两种颗粒均观察到高的O ₂排放值（18-19％）。