Experimental Investigation of Solid Fuel Combustion Process in a Hybrid Porous Reactor
Experimental Investigation of Solid Fuel Combustion Process in a Hybrid Porous Reactor作者机构：Institute of Fluid Mechanics (LSTM) Friedrich-Alexander University of Erlangen-Nuremberg Erlangen D-91058 Germany Erlangen Graduate School in Advanced Optical Technologies (SA OT) Erlangen D-91058 Germany Department of Mechanical Engineering Technical University Federico Santa Maria Valparaiso 05101 Chile
出 版 物：《Journal of Energy and Power Engineering》 (能源与动力工程（美国大卫英文）)
年 卷 期：2017年第11卷第9期
页 面：589-596页
学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术]
主 题：Combustion allothermal gasification MSW hybrid filtration combustion packed bed.
摘 要：One of the most significant human-made methane emission sources is the MSW （municipal solid waste）, deposited on sanitary landfills and open dumps. Within this work, an alternative MSW treatment concept is presented, which could provide a relatively clean waste/biomass-to-energy transformation. The proposed procedure comprises of a combustion and a gasification （or pyrolysis） step, which are consecutively taking place in a two-stage hybrid porous reactor system. The core of the system is two packed bed reactors, in which solid fuel （waste or biomass） is mixed with inert ceramic particles of similar size. This paper overviews the initial experimental investigation of the combustion step of a hybrid mixture, composed of wood pellets （fuel） and alumina balls （inert ceramic particles） in a 250 ram-high batch reactor. The temperature profile along the reactor, the concentration of CO and the flame front propagation velocity were measured as a function of the ceramic particle size （11 and 20 mrn）, the inert-to-fuel mass ratio （0：1, 2：1, 3：1） and the airflow rate （30, 42, 60 1/min）. Experiments indicate that an increase of the mass ratio of inert-to-fuel material and a decrease of the inert ceramic particles size lead to a decrease of the maximum temperature of the packed hybrid bed. Measured CO concentrations showed strong dependence on the inert ceramic particle size, i.e. the particle size reduction from 20 to 11 mm resulted in a significant reduction of CO-emission peaks. The maximum flame front propagation velocity of 0.2 mm/sec was detected for the airflow of 42 1/min, the particle size of 20 mm and the mass ratio of 3：1.
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