This research is to design and implement a new kind
of agitators called differential agitator. The Differential Agitator is an
electro- mechanic set consists of two shafts. The first shaft is the
bearing axis while the second shaft is the axis of the quartet upper
bearing impellers group and the triple lower group which are called
as agitating group. The agitating group is located inside a cylindrical
container equipped especially to contain square directors for the
liquid entrance and square directors called fixing group for the liquid
exit. The fixing group is installed containing the agitating group
inside any tank whether from upper or lower position. The agitating
process occurs through the agitating group bearing causing a lower
pressure over the upper group leading to withdrawing the liquid from
the square directors of the liquid entering and consequently the liquid
moves to the denser place under the quartet upper group. Then, the
liquid moves to the so high pressure area under the agitating group
causing the liquid to exit from the square directors in the bottom of
the container. For improving efficiency, parametric study and shape
optimization has been carried out. A numerical analysis,
manufacturing and laboratory experiments were conducted to design
and implement the differential agitator. Knowing the material
prosperities and the loading conditions, the FEM using ANSYS11
was used to get the optimum design of the geometrical parameters of
the differential agitator elements while the experimental test was
performed to validate the advantages of the differential agitators to
give a high agitation performance of lime in the water as an example.
In addition, the experimental work has been done to express the
internal container shape in the agitation efficiency. The study ended
up with conclusions to maximize agitator performance and optimize
the geometrical parameters to be used for manufacturing the
differential agitator
[1] Asiri, Saeed, "Differential Agitator", KACST patent, No. 06270232,
(2010).
[2] Polasek P and MUTL "Acceleration of gravity separation process. Proc.
Filtech Europa - Int. Conf. on Filtration and Separation
Technology".October, D├╝sseldorf, Germany (2003).
[3] Weber Arthur P, "Continuous flow reactor for high viscosity material"
betiilellem steel corp, (1977).
[4] Weetman Ronald J and HowkRichad A, " Mixer for axial flow on a nonuniform
flow field" gen signal corp. US (1988).
[5] Inoue Takao and Saito Makoto, "mixing device and method" kajimacorp
JP (1999).
[6] Hockmeyer and Herman H, "Apparatus for dispersing solid constituents
into a liquid" hockmeyer equipment corp. (2006).
[7] Hereit F, Mutl S and Vagner V "The formation of separable suspensions
and the methods of its assessment". Proc. Int. Conf. IWA. Paris, France.
0095-0099. (1983).
[8] Yinyu Hu, Zhe Liu, Jichu Yang, Yong Jin and Yi Cheng , "Millisecond
mixing of liquids using a novel jet nozzle, Department of Chemical
Engineering", Tsinghua University, Beijing 100084, PR China,
November (2008).
[9] Richard V. Calabrese, Michael K. Francis,Ved P. Mishra and
SupathomPhongikaroon ,"Measurement and Analysis of Drop Size in a
Batch Rotor Stator Mixer" University of Maryland , MD 20742-2111
USA (2011).
[10] Mitsuaki Funakoshi , "Chaotic mixing and mixing efficiency in a short
time" , Department of Applied Analysis and Complex Dynamical
Systems, Graduate School of Informatics, Kyoto University, Yoshida-
Honmachi, Sakyo-ku, Kyoto 606-8501, Japan , May (2007).
[11] SimoSiiriä , and JoukoYliruusia , "Determining a value for mixing:
Mixing degree" , University of Helsinki, Division of Pharmaceutical
Technology, Finland , August (2009).
[12] Polasek P and Mutl S "Acceleration of gravity separation process". J.
Filtr. 5 (1) 33-39 (2005).
[13] Samaras, K.; Mavros, P.; Zamboulis, D. "Effect of continuous feed
stream and agitator type on CFSTR mixing state". Ind. Eng. Chem. Res.
(2006).
[14] F. Moretti, D. Melideo, F. D-Auria, "CFX simulations of ROCOM
experiments", TACIS Project R2.02/02, Working Document TP-08-
01(06), December (2006).
[15] C. Leguay, G. OzcanTaskin and C. D. Rielly "Gas liquid mass transfer
in a vortex ingesting, agitated draft tube reactor" University of
Cambridge CB2 3RA UK (2011).
[16] A. Seidell, W. F. Linke, Van Nostrand "Solubility of Inorganic and
Metalorganic Compounds - A Compilation of Solubility Data from the
Periodical Literature" Van Nostrand (Publisher), (1953).
[17] D. S. Dickey and J. B. Fasano" Mechanical Design of Mixing
equipment" ,(2004).
[18] ANSYS11 Software program, ┬®Ansys, Inc., Canonsburg, PA USA,
(2011).
[1] Asiri, Saeed, "Differential Agitator", KACST patent, No. 06270232,
(2010).
[2] Polasek P and MUTL "Acceleration of gravity separation process. Proc.
Filtech Europa - Int. Conf. on Filtration and Separation
Technology".October, D├╝sseldorf, Germany (2003).
[3] Weber Arthur P, "Continuous flow reactor for high viscosity material"
betiilellem steel corp, (1977).
[4] Weetman Ronald J and HowkRichad A, " Mixer for axial flow on a nonuniform
flow field" gen signal corp. US (1988).
[5] Inoue Takao and Saito Makoto, "mixing device and method" kajimacorp
JP (1999).
[6] Hockmeyer and Herman H, "Apparatus for dispersing solid constituents
into a liquid" hockmeyer equipment corp. (2006).
[7] Hereit F, Mutl S and Vagner V "The formation of separable suspensions
and the methods of its assessment". Proc. Int. Conf. IWA. Paris, France.
0095-0099. (1983).
[8] Yinyu Hu, Zhe Liu, Jichu Yang, Yong Jin and Yi Cheng , "Millisecond
mixing of liquids using a novel jet nozzle, Department of Chemical
Engineering", Tsinghua University, Beijing 100084, PR China,
November (2008).
[9] Richard V. Calabrese, Michael K. Francis,Ved P. Mishra and
SupathomPhongikaroon ,"Measurement and Analysis of Drop Size in a
Batch Rotor Stator Mixer" University of Maryland , MD 20742-2111
USA (2011).
[10] Mitsuaki Funakoshi , "Chaotic mixing and mixing efficiency in a short
time" , Department of Applied Analysis and Complex Dynamical
Systems, Graduate School of Informatics, Kyoto University, Yoshida-
Honmachi, Sakyo-ku, Kyoto 606-8501, Japan , May (2007).
[11] SimoSiiriä , and JoukoYliruusia , "Determining a value for mixing:
Mixing degree" , University of Helsinki, Division of Pharmaceutical
Technology, Finland , August (2009).
[12] Polasek P and Mutl S "Acceleration of gravity separation process". J.
Filtr. 5 (1) 33-39 (2005).
[13] Samaras, K.; Mavros, P.; Zamboulis, D. "Effect of continuous feed
stream and agitator type on CFSTR mixing state". Ind. Eng. Chem. Res.
(2006).
[14] F. Moretti, D. Melideo, F. D-Auria, "CFX simulations of ROCOM
experiments", TACIS Project R2.02/02, Working Document TP-08-
01(06), December (2006).
[15] C. Leguay, G. OzcanTaskin and C. D. Rielly "Gas liquid mass transfer
in a vortex ingesting, agitated draft tube reactor" University of
Cambridge CB2 3RA UK (2011).
[16] A. Seidell, W. F. Linke, Van Nostrand "Solubility of Inorganic and
Metalorganic Compounds - A Compilation of Solubility Data from the
Periodical Literature" Van Nostrand (Publisher), (1953).
[17] D. S. Dickey and J. B. Fasano" Mechanical Design of Mixing
equipment" ,(2004).
[18] ANSYS11 Software program, ┬®Ansys, Inc., Canonsburg, PA USA,
(2011).
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:55393", author = "Saeed Asiri", title = "Fluid Differential Agitators", abstract = "This research is to design and implement a new kind
of agitators called differential agitator. The Differential Agitator is an
electro- mechanic set consists of two shafts. The first shaft is the
bearing axis while the second shaft is the axis of the quartet upper
bearing impellers group and the triple lower group which are called
as agitating group. The agitating group is located inside a cylindrical
container equipped especially to contain square directors for the
liquid entrance and square directors called fixing group for the liquid
exit. The fixing group is installed containing the agitating group
inside any tank whether from upper or lower position. The agitating
process occurs through the agitating group bearing causing a lower
pressure over the upper group leading to withdrawing the liquid from
the square directors of the liquid entering and consequently the liquid
moves to the denser place under the quartet upper group. Then, the
liquid moves to the so high pressure area under the agitating group
causing the liquid to exit from the square directors in the bottom of
the container. For improving efficiency, parametric study and shape
optimization has been carried out. A numerical analysis,
manufacturing and laboratory experiments were conducted to design
and implement the differential agitator. Knowing the material
prosperities and the loading conditions, the FEM using ANSYS11
was used to get the optimum design of the geometrical parameters of
the differential agitator elements while the experimental test was
performed to validate the advantages of the differential agitators to
give a high agitation performance of lime in the water as an example.
In addition, the experimental work has been done to express the
internal container shape in the agitation efficiency. The study ended
up with conclusions to maximize agitator performance and optimize
the geometrical parameters to be used for manufacturing the
differential agitator", keywords = "Differential Agitators, Parametric Optimization, Shape Optimization, Agitation, FEM, ANSYS11.", volume = "7", number = "6", pages = "389-11", }