... bed (BFB) [ 92 – 96 ] is widely used due to longer solid residence time. The spouted fluidized bed (SFB) [ 97 – 99 ] is adopted because of favorable gas-solid mixing. The circulating fluidized bed (CFB) [ 100 – 106 ] is applied in view of the sufficient gas-solid contact caused by intense flow regimes...

...Ronald W. Breault; Steven L. Rowan; Justin M. Weber; Jingsi Yang Tests were performed in a 0.1-m diameter small circulating fluidized bed (SCFB) and 0.3 m diameter cold flow circulating fluidized bed (CFCFB) riser systems located at the National Energy Technology Laboratory (NETL) to study...

... bagasse in bubbling fluidized beds is carried out. Detailed results are obtained for the local destructions of exergy along the reactor. This information is important to help improve environmental and sustainable practices and should be of interest to both designers and operators of fluidized bed...

...Kamil Idziak; Tomasz Czakiert; Jaroslaw Krzywanski; Anna Zylka; Wojciech Nowak The results of investigations on solids flow in a cold model of the dual fluidized bed reactor designed for chemical looping combustion of solid fuels (DFB-CLC-SF) are presented in this paper. The constructed unit...

... inhibiting the agglomeration process. This paper presents the results of investigations into ash-related issues in a laboratory-scale bubbling fluidized bed (BFB) reactor. In particular, the impact of additives (kaolin, halloysite, fly ash, and the residuals from wet desulfurization system (IMOS)) on bed...

... of the art for TCES systems. However, fluidized bed reactors offer significant advantages for scale-up of the system: the improved heat and mass transfer allows for higher charging/discharging power, whereas the favorable, continuous operation mode enables a decoupling of storage power and capacity. Even...

...Peter Ostermeier; Annelies Vandersickel; Stephan Gleis; Hartmut Spliethoff Gas–solid fluidized bed reactors play an important role in many industrial applications. Nevertheless, there is a lack of knowledge of the processes occurring inside the bed, which impedes proper design and upscaling...

....2013.03.006 Alternative energy sources Combustion of waste Energy from biomass Energy systems analysis Environmental impact Fuel combustion Fluidized bed Energy sources Environmental effects There is an increasing demand for use of substituting resources for generating energy...

...J. P. Simanjuntak; K. A. Al-attab; Z. A. Zainal In this paper, the hydrodynamic flow inside an internally circulating fluidized bed (ICFBG) was characterized using experimental and three-dimensional computational fluid dynamics (CFD) models. Eulerian-Eulerian model (EEM) incorporating the kinetic...

... 09 06 2018 Alternative energy sources Combustion of waste Fuel combustion Unconventional petroleum Fluidized bed Diesel engines are widely used in medium-duty and heavy-duty vehicles worldwide due to their excellent performance and durability. However, diesel engines are blamed...

...Mengqiao Yang; Subhodeep Banerjee; Ramesh K. Agarwal Circulating fluidized bed in chemical-looping combustion (CLC) is a recent technology that provides great advantage for gas–solid interaction and efficiency. In order to obtain a thorough understanding of this technology and to assess its...

... of Pulverized Char Under N2/CO2 Atmosphere in a Small-Scale Fluidized Bed Reactor ,” ASME J. Energy Resour., Technol. , 138 ( 4 ), p. 042207 . 10.1115/1.4032791 [11] Mayor , J. R. , and Williams , A. , 2010 , “ Residence Time Influence on the Fast Pyrolysis of Loblolly Pine Biomass ,” ASME J...

... with circulating fluidized bed systems. The results showed that for the CLC power plants, the cost of CO 2 captured was between 16 and 26 Euros/ton. Using an ASPEN-based modeling tool, Porrazzo et al. [ 14 ] conducted a detailed economic evaluation of a CLC-based power plant and investigated the effect of two...

... characteristics of polydisperse particles are much more complex than the single particle fraction in a fluidized bed. To investigate the gas–solid two-phase flow characteristics of the particles with different diameters in a spouted bed, the segregation and mixing characteristics, bubble morphology, minimum...

... storage Heat energy transfer Fluidized bed 20 09 2017 28 02 2018 There are numerous fractures and cavities in underground coal fire zones [ 18 ] and new fractures are continuously produced because the high temperature causes thermal cracking in the surrounding coal and rock [ 19...

... sources Combustion of waste Energy from biomass Fuel combustion Fluidized bed Annual production of agricultural and forestry biomass waste in China amounts to about 0.4 × 10 9 tons of coal equivalent. However, the effective utilization of biomass is less than 2% [ 1 , 2 ]. Thermochemical...

...-Combustion of Pulverized Coal and Biomass in Fluidized Bed of Furnace ,” ASME J. Energy Resour. Technol. , 139 ( 6 ), p. 062204 . 10.1115/1.4036958 [7] Saxena , R. C. , Adhikari , D. K. , and Goyal , H. B. , 2009 , “ Biomass-Based Energy Fuel Through Biochemical Routes: A Review...

... Fuel combustion Fluidized bed A = frequency factor E = activation energy k = rate constant p O 2 = oxygen partial pressure T = thermodynamic temperature α = conversion rate β = linear heating rate References [1...

...Ling Zhou; Lingjie Zhang; Weidong Shi; Ramesh Agarwal; Wei Li A coupled computational fluid dynamics (CFD)/discrete element method (DEM) is used to simulate the gas–solid two-phase flow in a laboratory-scale spouted fluidized bed. Transient experimental results in the spouted fluidized bed...

... Alternative energy sources Combustion of waste Energy from biomass Fluidized bed Fossil fuel Combustion Alternative jet fuels are of interest to the aviation community because of rising oil costs, the need to secure a consistent oil supply, and the desire for cleaner burning engines [ 1 – 5...