scholarly journals Hydrodynamic Modelling of Municipal Solid Waste Residues in a Pilot Scale Fluidized Bed Reactor

Energies ◽  
2017 ◽  
Vol 10 (11) ◽  
pp. 1773 ◽  
Author(s):  
João Cardoso ◽  
Valter Silva ◽  
Daniela Eusébio ◽  
Paulo Brito
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Pilot Scale ◽  
Hydrodynamic Modelling

Combustion of Municipal Solid Waste in a Pilot Scale Fluidized Bed Combustor

2014 ◽  
Vol 931-932 ◽  
pp. 1015-1019
Author(s):  
Anwar Johari ◽  
Ramli Mat ◽  
Mohd Johari Kamaruddin ◽  
Tuan Amran Tuan Abdullah ◽  
Wan Rosli Wan Sulaiman ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Fluidized Bed ◽  
Pilot Scale ◽  
Thermal Capacity ◽  
Temperature Distributions ◽  
Bed Temperature ◽  
Region Temperature ◽  
Secondary Air ◽  
Fluidized Bed Combustor

Combustion study of municipal solid waste combustion in a pilot scale fluidized bed combustor had been carried out. The work was aimed at demonstrating sustainable combustion of municipal solid waste by employing operating parameters gained from previous studies. The primary and secondary air factor used were AF = 0.8 and AF = 0.6 respectively. The fluidization number was 5Umf and both in-bed and freeboard region temperature distributions were monitored continuously. Results on the combustion studies revealed that the initial bed temperature could be sustained due to high thermal capacity of sand but later dropped due to problem related to the mixing of bulky and heterogeneous components of municipal solid waste and sand.

scholarly journals Review Chapter: Waste to Energy through Pyrolysis and Gasification in Brazil and Mexico

2021 ◽  
Author(s):  
José Antonio Mayoral Chavando ◽  
Valter Silva ◽  
Danielle Regina Da Silva Guerra ◽  
Daniela Eusébio ◽  
João Sousa Cardoso ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Fluidized Bed ◽  
Atmospheric Pressure ◽  
Large Scale ◽  
Numerical Models ◽  
Fluidized Bed Reactor ◽  
Energy Generation ◽  
Agricultural Residues ◽  
Thermochemical Conversion

Millions of tons of forest residues, agricultural residues, and municipal solid waste are generated in Latin America (LATAM) each year. Regularly, municipal solid waste is diverted to landfills or dumpsites. Meanwhile, forest and agricultural residues end up decomposing in the open air or burnt, releasing greenhouse gases. Those residues can be transformed into a set of energy vectors and organic/chemical products through thermochemical conversion processes, such as pyrolysis and gasification. This book chapter provides information on current examples of gasification on large scale in the world, which typically operate at 700°C, atmospheric pressure, and in a fluidized bed reactor. The produced gas is used for heat and energy generation. Whereas pyrolysis at a large scale operates around 500°C, atmospheric pressure, and in an inert atmosphere, using a fluidized bed reactor. The produced combustible liquid is used for heat and energy generation. The decision of using any of these technologies will depend on the nature and availability of residues, energy carries, techno-socio-economic aspects, and the local interest. In this regard, the particular situation of Brazil and Mexico is analyzed to implement these technologies. Its implementation could reduce the utilization of fossil fuels, generate extra income for small farmers or regions, and reduce the problem derived from the accumulation of residues. However, it is concluded that it is more convenient to use decentralized gasification and pyrolysis stations than full-scale processes, which could be an intermediate step to a large-scale process. The capabilities of numerical models to describe these processes are also provided to assess the potential composition of a gas produced from some biomass species available in these countries.

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