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http://hdl.handle.net/10266/5814
Title: | An Investigation into the Effects of Different Blow Tank Aeration Conditions on the Conveyability of Fine Powders in Pneumatic Conveying Systems |
Authors: | Masoodi, Faiz Azhar |
Supervisor: | Mallick, S. S. Sharma, Atul |
Keywords: | Pneumatic Conveying;Blow Tank;Power Plant;Dense Phase;Fly Ash |
Issue Date: | 19-Sep-2019 |
Abstract: | Pneumatic conveying test rigs, one positive pressure system and one negative pressure (vacuum) system, were designed, fabricated and installed at the ‘Laboratory for Bulk Solids and Particle Technologies’ in the Mechanical Engineering Department of Thapar Institute of Engineering and Technology (T.I.E.T), Patiala. The work was carried out under the aegis of a research collaboration between T.I.E.T and NTPC Ltd., with an aim to rid the pneumatic conveying plants installed in power stations owned by NTPC Ltd. of certain encountered problems. This document reports the entire facility building procedure/activity, for the aforementioned test rigs, undertaken at T.I.E.T. Presented also are the findings of experimental investigations conducted on a bottom discharge type 0.8 m3 blow tank feeder, used in the present study, through variation of aeration conditions of this feeder and the air flow rates fed to the system for material conveyance, are presented. Fly-ash (bulk density 1000.7 kg/m3, particle density 1384.4 kg/m3, d50 = 43.61 μm) was conveyed over a wide range of flow rates, and correspondingly a wide range of air flow rates, to study the effect of fluidization air supply to the blow tank, total air supply to the system, aerating side air supply to the blow tank, location of aerating supply to the blow tank, and prepressurization condition of the blow tank on flow rate by mass, of material, in tonnes/hour (tonnage), through the system. Furthermore, the effect of varying relative proportions of side air to the blow tank and conveying air to the system was also evaluated. Pre-pressurization of the blow tank feeder and increase in relative proportion of side air fed to the blow tank feeder were seen to considerably favour the tonnage. For use in the larger experimental program five sonic nozzles for metering specified mass flow rates of air to the system was designed. The nozzles are arranged to provide parallel flow, to form an assembly called the sonic nozzle bank. |
Description: | ME Thesis |
URI: | http://hdl.handle.net/10266/5814 |
Appears in Collections: | Masters Theses@MED |
Files in This Item:
File | Description | Size | Format | |
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combinepdf-1.pdf | 3.31 MB | Adobe PDF | View/Open |
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