Effect of phosphate compound on the reduction of the pressure drop of laboratory-scale fabric filter

2020 ◽  
pp. 1-8
Author(s):  
Shigetoshi Takahashi ◽  
In-Hee Hwang ◽  
Takayuki Matsuo ◽  
Yasumasa Tojo ◽  
Toshihiko Matsuto
Keyword(s):  
Pressure Drop ◽  
Laboratory Scale ◽  
Fabric Filter ◽  
Phosphate Compound

scholarly journals Effect of Ammonia Injection on Fabric Filter Pressure Drop

1991 ◽  
Vol 41 (11) ◽  
pp. 1523-1527 ◽  
Author(s):  
W. Humphries ◽  
R. Beck ◽  
A. Lowe
Keyword(s):  
Pressure Drop ◽  
Fabric Filter ◽  
Ammonia Injection

Fabric Filter Performance of Helicopter Inlet Barrier Filters

2012 ◽  
Vol 57 (3) ◽  
pp. 1-13 ◽  
Author(s):  
Nicholas Bojdo ◽  
Antonio Filippone
Keyword(s):  
Pressure Drop ◽  
Pressure Loss ◽  
Separation Efficiency ◽  
Engine Performance ◽  
Woven Fabric ◽  
Additional Restriction ◽  
Transient Pressure ◽  
Temporal Separation ◽  
Fabric Filter ◽  
Filter Performance

An inlet barrier filter system is integrated into the intake of a helicopter to perform the task of removing potentially harmful particles from engine-bound air. While performing a vital duty in the prolonging of engine life, their use may incur a loss of engine performance as a result of the pressure loss that is synonymous with air passing through a porous barrier. Furthermore, as particles collect on the filter they pose additional restriction to the flow of air, causing the pressure drop to increase over time. It is the objective of the present work to propose a low-order model to predict this transient pressure loss, in order that the performance of helicopters operating with inlet barrier filters may be analyzed. The contribution includes a model to predict the temporal separation efficiency of a woven fabric filter and the temporal change in pressure drop due to the buildup of particles on the filter.

Better understanding of the filtration characteristics in the flexible fibre filter module (3FM)

2007 ◽  
Vol 55 (1-2) ◽  
pp. 77-83 ◽  
Author(s):  
J.J. Lee ◽  
J.H. Im ◽  
R. BenAim ◽  
J.R. Kim ◽  
Y.J. Kim ◽  
...  
Keyword(s):  
Particle Size ◽  
Pressure Drop ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Laboratory Scale ◽  
Filtration Velocity ◽  
Operating Parameters ◽  
Particle Retention ◽  
Packing Densities

This study is about the particle retention and filtration characteristics of fibre filter. Four laboratory scale fibre filters with different heights were used in parallel at various packing densities and filtration velocities. Of all of the operating parameters studied, filtration velocity had the most influence. Contrary to general theories, pressure drop increases slightly during the filtration in spite of the continuous retention of particles. This may have occurred because of large porosity of the packing (about 93%). This might be considered an advantage of the filter and something that makes it economic. The higher the filtration velocity, the larger the mass of particles retained in the filter. For filtration velocities of 20 and 40 m/h, particles smaller than 5 μm are retained as proven by the particle size distribution at the inlet and outlet.

Theory for pressure drop in a pulse-jet cleaned fabric filter

1980 ◽  
Vol 14 (7) ◽  
pp. 845-852 ◽  
Author(s):  
David Leith ◽  
Michael J. Ellenbecker
Keyword(s):  
Pressure Drop ◽  
Fabric Filter ◽  
Pulse Jet

scholarly journals Effect of Surface Condition of Fabric Filter on Pressure Drop Evolution in Repeated Pulse-jet Cleaning

2008 ◽  
Vol 45 (1) ◽  
pp. 4-11
Author(s):  
Yuping Yao ◽  
Masashi Wada ◽  
Ning Mao ◽  
Hidehiro Kamiya ◽  
Chikao Kanaoka
Keyword(s):  
Pressure Drop ◽  
Surface Condition ◽  
Fabric Filter ◽  
Effect Of Surface ◽  
Pulse Jet

Fluid Dynamics Study of the Influence of Direction of the Gas Flow in Fabric Filter

2010 ◽  
Vol 660-661 ◽  
pp. 520-524 ◽  
Author(s):  
Sandra Mara Santana Rocha ◽  
Luiz Gustavo Martins Vieira ◽  
M.L. Aguiar ◽  
João Jorge Ribeiro Damasceno
Keyword(s):  
Fluid Dynamics ◽  
Pressure Drop ◽  
Gas Flow ◽  
High Efficiency ◽  
Fluid Dynamic ◽  
Particulate Material ◽  
Dynamic Simulations ◽  
Environmental Laws ◽  
Fabric Filter ◽  
Operational Costs

The new environmental laws, as well as the search for technologies of accuracy production, have leaded companies to search for more and more efficient equipment. Regarding the emission of particulate material, the fabric filter is the most used equipment in the industry, for presenting a high efficiency and low operational costs, essential in any project of this type. In the search for a more efficient and economic filtering operation, this work studied, by techniques of CFD, the modification of the traditional way of feeding a filtering box (usually accomplished by the side of the system) by another in which the feeding was accomplished through the bottom of the equipment, in order to review the distribution of volumetric outflows in the bags and pressure drop. The fluid dynamic simulations had shown that the feeding fluid - through the bottom of the filtering box - provides an inferior operational pressure drop and a better distribution of fluids between the bags.

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