Wyniki wyszukiwania - BazTech

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Metody kondycjonowania spalin przed elektrofiltrami - stan techniki i kierunki rozwoju

Jędrusik M., Nowaczewski E., Świerczok A.

Systems : journal of transdisciplinary systems science

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2006

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Vol. 11,spec.1/2

319-326

EN

In Polish power engineering over 98% of flue gas is cleaned with ESP. Based on measurement data it was figured, that dust concentration in flue gas by the ESP is set between 50 mg/m3 and 150 mg/m3. For the new ESP dust emission standards are more strict and now is 50 mg/m3, but in close future will be 30 mg/m3. That's why effective and chip method to increase the ESP collection efficiency is searched. One on this method is the flue gas conditioning. In the first part of the paper conditioning method was described, in the second part measurement data of the conditioning at the ESP, using water and alkaline liquid were presented.

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Zastosowanie modelowania fizycznego i techniki wizualizacji w urządzeniach ochrony atmosfery

Jędrusik M., Nowaczewski E., Świerczok A.

Systems : journal of transdisciplinary systems science

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2004

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Vol. 9, Sp. 2/1

437-442

PL

W referacie przedstawiono podstawy i zasady modelowania fizycznego oraz wyniki badań dla wybranego elektrofiltru oraz absorbera. Uzyskane rezultaty stanowiły podstawę do powstania nowych rozwiązań konstrukcyjnych wlotu gazu do elektrofiltru oraz modernizacji systemu zraszania w absorberach instalacji odsiarczania spalin (IOS).

EN

In the paper was shown the application of phisical modelling for aerodynamic test of electrostatic precipitator (ESP) and Flue Gas Desulphuriiiation (FGD). It also described the phisical background of modelling with the choice of appropriate elements for gas distribution. This enables the model phenomena to occur in the auto-modeling. Described modeling examinations were carried out on the transparent models with air as the modeling medium. Gas distribution analyses were done on a physical models made in a scale of 1:16 or 1:20. A reliable model for hydrodynamics studies is when the Reynold's number for the model is greater than Re 104 which guarantees absolutely turbulent gas flow in a model (so called range of self-modelling). It is important with the studies to fulfil the dynamic affinity criterion of the Euler number. This criterion enables transfer of hydraulic resistance from a real object to the model and vice versa. Visualisation of flow in the model was achieved using a spark technique and taking photographs (the sparks involved being produced from burning sawdust). Burning sawdust particles having very small inertia are moving along trajectories nearly approaching the flue gas flow movement. This technique enables not only observations of the gas flow but also makes possible camera recording of the observed phenomenon. The character of gas flow i.e. its main direction, recirculation spheres, as well as any flow perturbations due to the inner constructional elements can be easily identified. For an example of physical modeling was shown the ESP and FGD absorber model. The examples presented in this paper show that certain design problems are satisfactorily solved when the experiments involve phisical modeling of the aerodynamic phenomena that occur in the ESP and FGD ab-sorber.

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Wykorzystanie modelowania fizycznego do optymalizacji urządzeń ochrony atmosfery w energetyce

Jędrusik M., Nowaczewski E., Świerczok A.

Prace Naukowe Politechniki Warszawskiej. Konferencje

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2003

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z. 23

151--160

PL

W pracy opisano metodę fizycznego modelowania przepływu gazu w nowych i modernizowanych elektrofiltrach oraz w absorberach do odsiarczania spalin. Podano wpływ rozkładu prędkości spalin w komorze elektrofiltru na jego skuteczność odpylania. Zamieszczono wyniki w postaci zdjęć z wizualizacji przepływu gazu i wykresów rozkładu prędkości w modelach wybranych elektrofiltrów i absorberów.

EN

The physical modelling method for the flue gas in the new and modernised ESP (Electrostatic Precipitator) and in FGD (Flue Gas Desulphurisation) absorbers was described in the paper. It was given the gas flow distribution in the ESP chamber influence for the efficiency precipitation. In the paper are results, which were given as shots of the flow visualisation and as a schedule velocity diagram in the selected ESP and FGD absorber models.