title: Effect of ash content on the combustion process of simulated MSW in the fixed bed.
abstract: This paper experimentally and numerically investigates the effects of ash content on the combustion process of simulated Municipal Solid Waste (MSW). A fixed-bed experimental reactor was utilized to reveal the combustion characteristics. Temperature distributions, ignition front velocity, and the characteristics of gas species' release were measured and simulated during the combustion process. In the present work, the two-dimensional unsteady mathematical heterogeneous model was developed to simulate the combustion process in the bed, including the process rate model as well as NOx production model. The simulation results in the bed are accordant with the experimental results. The results show that as ash content increases, the lower burning rate of fuel results in char particles leaving the grate without being fully burned, causing a loss of combustible material in the MSW in a fixed bed and therefore reducing the combustion efficiency and increasing the burning time of the MSW.
authors.affiliation: School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin 150001, PR China. Electronic address: Sunsr@hit.edu.cn.
authors.forename: Rui
authors.initials: R
authors.lastname: Sun
authors.affiliation: Department of Mechanical Engineering, Suez Canal University, Ismailia, Egypt. Electronic address: temoil@aucegypt.edu.
authors.forename: Tamer M
authors.initials: TM
authors.lastname: Ismail
authors.affiliation: School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin 150001, PR China.
authors.forename: Xiaohan
authors.initials: X
authors.lastname: Ren
authors.affiliation: Department of Basic Science, Cairo University, Giza, Egypt.
authors.forename: M
authors.initials: M
authors.lastname: Abd El-Salam
mesh_terms: D060729:Coal Ash; D003198:Computer Simulation; D004867:Equipment Design; D005740:Gases; D008962:Models, Theoretical; D009589:Nitrogen Oxides / Q000032:analysis; D012037:Refuse Disposal / Q000295:instrumentation* / Q000379:methods*; D062611:Solid Waste; D013696:Temperature
chemical_list: D060729:Coal Ash; D005740:Gases; D009589:Nitrogen Oxides; D062611:Solid Waste
keywords: Ash content; Fixed-bed combustion; Mathematical modeling; Municipal solid waste