Autor: Rieger, F. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A new device for character isation of the drainage kinetics of fibrous suspensions under gravity
Autorzy:: Przybysz, P.
Kuncewicz, Cz.
Rieger, F.
Powiązania:: https://bibliotekanauki.pl/articles/185015.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: drenaż
zawiesina włóknista
drainage
fibrous suspensions
drainage apparatus
Opis:: Gravity dewatering of fibrous suspension is one of basic technological operations in paper production process. Although there are numerous methods to determine dewatering of such suspensions, none of them can measure undisturbed flow of removed water. In the paper the idea and design of a new apparatus for the determination of drainage rate of fibrous suspensions is presented. The apparatus differs from other known devices by minimisation of filtrate flow resistance in the outlet part of the equipment. In the second part of the paper measurements of the drainage rate have been presented. The flow resistance of the fluid through the bottom wire screen in the device was determined. The calculated flow resistance will be used in the developed model of dynamic drainage of fibrous suspensions, which will be discussed in our following paper (Przybysz et al., 2014).
Źródło:: Chemical and Process Engineering; 2014, 35, 4; 409-420
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Gravity Drainage Kinetics of Papermaking Fibrous Suspensions
Autorzy:: Przybysz, P.
Kuncewicz, Cz.
Rieger, F.
Powiązania:: https://bibliotekanauki.pl/articles/185583.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: drenaż
zawiesina włóknista
kinetyka odwadniania
drainage
fibrous suspensions
drainage kinetics
Opis:: The study analyses application possibilities of filtration and thickening models in evaluation of papermaking suspension drainage rate. The authors proposed their own method to estimate the drainage rate on the basis of an existing Ergun capillary model of liquid flow through a granular material. The proposed model was less sensitive to porosity changes than the Ergun model. An empirical verification proved robustness of the proposed approach. Taking into account discrepancies in the published data concerning how the drainage velocity of papermaking suspension is defined, this study examines which of the commonly applied models matches experimental results the best.
Źródło:: Chemical and Process Engineering; 2014, 35, 4; 421-434
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Effect of impeller shape on solid particle suspension
Autorzy:: Rieger, F.
Jirout, T.
Ceres, D.
Seichter, P.
Powiązania:: https://bibliotekanauki.pl/articles/185746.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: mixing
axial impeller
hydrofoil impeller
just-suspended impeller speed
electrochemical metod
mieszanie
wirnik osiowy
prędkość wirnika
metoda elektrochemiczna
Opis:: This paper deals with the effect of impeller shape on off-bottom particle suspension. On the basis of numerous suspension measurements, correlations are proposed for calculating the just-suspended impeller speed for a standard pitched four-blade turbine and three types of hydrofoil impellers produced by TECHMIX for several particle sizes and for a wide range of particle concentrations. The suspension efficiency of the tested impellers is compared with the efficiency of a standard pitched blade turbine on the basis of the power consumption required for off-bottom suspension of solid particles. It is shown that the standard pitched blade turbine needs highest power consumption, i.e. it exhibits less efficiency for particle suspension than hydrofoil impellers produced by TECHMIX.
Źródło:: Chemical and Process Engineering; 2013, 34, 1; 139-152
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Blending characteristics of high-speed rotary impellers
Autorzy:: Fořt, I.
Seichter, P.
Pešl, L.
Rieger, F.
Jirout, T.
Powiązania:: https://bibliotekanauki.pl/articles/185151.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: high-speed rotary impeller
turbulent flow
impeller power input
blending time
impeller blending efficiency
wirnik obrotowy dużych prędkości
przepływ turbulentny
pobór mocy wirnika
czas mieszania
efektywność mieszania wirnikiem
Opis:: This paper presents a comparison of the blending efficiency of eight high-speed rotary impellers in a fully baffled cylindrical vessel under the turbulent flow regime of agitated charge. Results of carried out experiments (blending time and impeller power input) confirm that the down pumping axial flow impellers exhibit better blending efficiency than the high-speed rotary impellers with prevailing radial discharge flow. It follows from presented remsults that, especially for large scale industrial mrealisations, the axial flow impellers with profiled blades bring maximum energy savings in mcomparison with the standard impellers with inclined flat blades (pitched blade impellers).
Źródło:: Chemical and Process Engineering; 2013, 34, 4; 427-434
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

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