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1
Content available Korzyści stosowania mieszadeł dyspergujących w procesie wytwarzania zawiesin
Hapanowicz J., Stecyk V., Troniewski L.
Inżynieria i Aparatura Chemiczna
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2010
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Nr 2
51-52
PL
W pracy dokonano eksperymentalnej oceny celowości wykorzystania mie-szadeł dyspergujących w procesie wytwarzania zawiesin ciała stałego w cie-czy niutonowskiej i nieniutonowskiej. Podano równania opisujące warunki pracy mieszadła, konieczne do wytworzenia zawiesiny całkowitej. Dla tych warunków porównano moc mieszania mieszadła dyspergującego z mocą standardowej turbiny Rushtona.
EN
In the paper experimental estimation of advisability of using dispersing agitators in production process of solid suspensions in Newtonian and non-Newtonian fluids was conducted. Correlations describing working conditions of agitators necessary to achieve complete suspension were determined. The mixing power of dispersing agitators with the power of standard Rushton turbine was compared for these conditions.
2
Zużycie energii przy wytwarzaniu zawiesin mieszadłami nowej konstrukcji
Stecyk V.
Zeszyty Naukowe. Mechanika / Politechnika Opolska
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2009
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z. 94
87-88
EN
The paper presents results of experimental investigations regarding mixing power of suspension and conditions of suspension production using dispersing agitators. The influence of the geometric parameters on the mixing power and the minimum agitator speed was discussed. Description of the power consumption and the conditions of suspension production using the dispersing agitators was defined.
3
Wykorzystanie tarczowych mieszadeł dyspergujących do mieszania zawiesin
Hapanowicz J., Stecyk V.
Zeszyty Naukowe. Mechanika / Politechnika Opolska
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2008
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Vol. 324, z. 90
79-94
PL
W pracy przedstawiono wyniki badań mocy mieszania w mieszalniku bez przegród układów dwufazowych ciecz-ciało stałe, tarczowymi mieszadłami dyspergującymi. Badania prowadzono w odniesieniu do zawiesin o różnym stężeniu cząstek stałych, wykorzystując różniące się wymiarami mieszadła. Na podstawie uzyskanych danych opracowano równania wyrażające krytyczną liczbę Reynoldsa i liczbę Eulera dla mieszania jednorodnych zawiesin.
EN
In the paper the mixing power measurements of suspensions for dispersing disc agitators are presented. The experiments were carried out in a flat-bottomed vessel with a diameter of 150 mm without baffles. The agitators were equipped with slanting blades on their periphery. The blade's angle of inclination was positive or negative depending on the way in which the agitator on the pin of the driving system was mounted. The measurements were carried out in a glycerine suspension of spherical glass particle with diameter ranging from 600 to 800 ?m and solid phase mass concentration in the range from 0 to 50%. The physical properties of the produced suspensions were calculated according to relations (1) and (2). The influence of the agitator's geometry on mixing power and the conditions regarding formation of suspension in the mixer were examined. The results of the experiments were presented on graphs as power characteristics showing the influence of the Reynolds number and solid concentration of suspensions on the Euler number. It was stated that the agitator's geometry has an influence on the mixing power. The mixing power of the suspensions using an agitator with a negative angle of blade inclination decreases compared to blades with positive inclination angle. On the basis of experimental data the way of determination of critical (minimum) agitator speed was worked out which is shown on Fig. 8. Taking into account the parameters having the influence on the conditions of suspension production the critical Reynolds number was determined which is described by relation (12). On the basis of the general equation (14) detailed form of Euler number was determined which is described by relation (17).
4
The application of an endoscope technique to estimate of participle dispersion in two-phase systems
Troniewski L., Hapanowicz J., Stecyk V.
Turbulence : international journal
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2007
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Vol. 12
115-121
EN
The paper presents experimental investigations of local volume fractions of dispersed phase. The measurements were carried out by means of optical measuring system. On the basis of the received results the degree of homogeneity of two-phase system was described. The measurements were carried out in the mixer with four baffles using dispersing disc agitators with reference to solid-non Newtonian liquid systems.
5
Content available remote Charakterystyki mocy mieszania cieczy nieniutonowskiej tarczowym mieszadłem dyspergującym
Troniewski L., Stecyk V.
Przemysł Chemiczny
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2007
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T. 86, nr 10
994-995
6
Wytwarzanie zawiesin ciała stałego w cieczy nieniutonowskiej dyskowym mieszadłem dyspergującym
Hapanowicz J., Stecyk V.
Inżynieria i Aparatura Chemiczna
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2006
|
Nr 4s
56-57
EN
In the paper measurements of the critical agitator speed for dispersing disc agitators are presented. The experiments were carried out in a flat-bottomed vessel without baffles. A non-Newtonian liquid - solid system with different concentration were mixed. On the basis of experimental results the critical Reynolds number was determined.
7
Charakterystyka mocy mieszania cieczy nieniutonowskiej dyskowym mieszadłem dysperującym
Hapanowicz J., Stecyk V.
Inżynieria i Aparatura Chemiczna
|
2004
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Nr 3s
52-53
EN
In the paper the results of experimental investigations of mixing power of non-Newtonian liquids (satisfying power-law model) using a disperging agitator are presented. The influence of agitator's geometry and turbulence of process on mixing power were evaluated. On the basis of the results of experiments the equation for mixing power number was formulated.
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