School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani 12121, Thailand.
Bioresour Technol. 2013 Jul;140:199-210. doi: 10.1016/j.biortech.2013.04.086. Epub 2013 Apr 30.
Combustion of peanut and tamarind shells was studied in the conical fluidized-bed combustor using alumina sand as the bed material to prevent bed agglomeration. Morphological, thermogravimetric and kinetic characteristics were investigated to compare thermal and combustion reactivity between the biomass fuels. The thermogravimetric kinetics of the biomasses was fitted using the Coats-Redfern method. Experimental tests on the combustor were performed at 60 and 45 kg/h fuel feed rates, with excess air within 20-80%. Temperature and gas concentrations were measured along radial and axial directions in the reactor and at stack. The axial temperature and gas concentration profiles inside the combustor exhibited sensible effects of fuel properties and operating conditions on combustion and emission performance. High (≈ 99%) combustion efficiency and acceptable levels of CO, CxHy, and NO emissions are achievable when firing peanut shells at excess air of about 40%, whereas 60% is more preferable for burning tamarind shells.
使用氧化铝砂作为床料在锥形流化床燃烧器中研究了花生壳和罗望子壳的燃烧，以防止床料结块。研究了形态、热重和动力学特性，以比较生物质燃料之间的热和燃烧反应性。使用 Coats-Redfern 方法对生物质的热重动力学进行了拟合。在 60 和 45 kg/h 燃料进料率下，过量空气在 20-80%范围内对燃烧器进行了实验测试。在反应器和烟囱中沿径向和轴向测量了温度和气体浓度。燃烧器内的轴向温度和气体浓度分布表现出燃料特性和操作条件对燃烧和排放性能的明显影响。当以约 40%的过量空气燃烧花生壳时，可实现高（≈99%）燃烧效率和可接受水平的 CO、CxHy 和 NO 排放，而燃烧罗望子壳时，60%更为可取。
