Author
M Prasad Babu
Bio: M Prasad Babu is an academic researcher from National Institute of Technology, Warangal. The author has contributed to research in topics: Residence time distribution & Fluidized bed. The author has an hindex of 1, co-authored 1 publications receiving 18 citations.
Topics: Residence time distribution, Fluidized bed
Papers
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TL;DR: In this paper, a single-stage fluidized bed provided with an internal, using uniformly sized particles and a binary solid mixture, varying gas flow rate, solids rate, bed height, dilution and the bed geometry has been determined.
Abstract: Experimental investigation of RTD (residence time distribution) of solids is carried out in a single-stage fluidized bed provided with an internal, using uniformly sized particles and a binary solid mixture, varying gas flow rate, solids rate, bed height, dilution and the bed geometry. The effect of these variables on first and second moments as well as on F-curves has been determined. Using a binary solid mixture or an internal inside the bed is found to reduce backmixing of solids. The data is fitted to FTEM and the values of N obtained were compared for different variables.
20 citations
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TL;DR: The DME-to-olefins (DTOF) process is an interesting alternative to the methanol to OE process because of the easier production of DME, its higher reactivity, and the moderate d... as mentioned in this paper.
Abstract: The dimethyl ether (DME)-to-olefins (DTO) process is an interesting alternative to the methanol-to-olefins process because of the easier production of DME, its higher reactivity, and the moderate d...
24 citations
TL;DR: A semi-empirical approach was developed and further validated, for the first time in the literature, to predict the entire profile of solids RTD, in which the ascending part was obtained through CFD simulation whereas the descending part was given by the fitted empirical exponential function.
22 citations
TL;DR: In this paper, the simulation of bubbling fluidized beds (BFB) residence time distribution (RTD) based on the structure-based drag model is conducted for the single and binary gas-solid phases systems, a comparison of computed results with experimental data proves that their model is applicable to both systems with better accuracy.
22 citations
TL;DR: In this paper, the authors carried out mass transfer study on a multi-stage fluidized bed ion exchanger column with solids and liquid flowing in the counter current directions and demonstrated improved separation efficiency of dissolved anions from waste water.
Abstract: In our recent work we carried out mass transfer study on the multi-stage fluidized bed ion exchanger column with solids and liquid flowing in the counter current directions and demonstrated improved separation efficiency of dissolved anions from waste water in comparison to that achieved in a fixed bed operation. In this study, we report the results pertaining to hydrodynamic study with a view to ascertaining the type of fluidization prevailing on the column's stage and the operating range of liquid and solid flow rates for the steady and stable operation of the column without loading or flooding with excess solid or water flow rates. Residence time distribution (RTD) study was carried out to investigate the extent of mixing on the stages. In addition, the experimental measurements for pressure-drops were made over a wide range of operating conditions including number of stages, height of the downspout on every stage, and the liquid and solid flow rates. Based on the data, empirical correlations were developed using scale-up analysis for predicting pressure-drop, bed porosity and average bed height during cross-flow fluidization apparently prevalent on the stage. The results in this study assume significance from the perspective of design and stable operation of staged fluidized bed ion exchangers.
20 citations
TL;DR: In this paper, a numerical investigation of the solids residence time distribution and the fluidized structure of a multi-compartment fluidized bed, in which the flow pattern is proved to be close to plug flow by using computational fluid dynamics (CFD) simulations.
19 citations