Determination of the optimal conditions of the work of a Venturi scrubber for gas cleaning from solid particles

Shraiber O.A., Dr. Sci. (Eng.), Professor, Antonets I.V.
Institute of General Energy of the National Academy of Sciences of Ukraine, 172 Antonovycha St., Kyiv, 03680, Ukraine
Language: Ukrainian
Source: Problemy zahal`noi enerhetyky - The Problems of General Energy, 2016, 3(46):57-61
https://doi.org/10.15407/pge2016.03.057
Section: Study and optimization of the technological objects and systems of the energy sector
UDC: 532.529
Received: 15.09.2016
Published: 28.09.2016
Abstract: We have established that one should search for the optimal conditions of particle catching in a polydisperse three-phase flow, which is realized in a Venturi scrubber, in a seven-dimensional space b, c, ugt, ui0, xst, L1, L2, where b, c are coefficients of the function of drop distribution by sizes, ugt is the gas velocity at the entry to the throat, ui0 is the initial drop velocity, xst is the abscissa of their feed to the flow, and L1, L2 are the lengths of confuser and throat. We have performed the search for the optimal technological parameters by the method of steep descent, and geometric characteristics by the method of quadratic approximation. We have determined that the optimal conditions correspond to the minimal values of ui0 and xst, the maximal gas velocities in the throat, and fractional drop compositions with minimal mode. For a typical regime, we present an example of search for the optimal geometric characteristics of the scrubber L1, L2.
Keywords: scrubber, three-phase flow, drops, solid particles, gas cleaning from ash, efficiency.
References:
1. Shraiber, O.A., & Fedinchyk, I.V. (2012). Modeliuvannia protsesu mokroi ochystky dymovykh haziv vid letkoi zoly [Modeling of the process of wet cleaning of flue gases from ash particles]. Promyshlennaia teplotekhnika, Vol. 34, № 3, 86-92 [in Ukrainian].
2. Shraiber, A.A, & Antonets, I.V. (2014). Modeling of the process of ash removal from gas in a Venturi scrubber with regard for the turbulent fluctuations of particle. Problemy zagal’noi energetyky - The Problems of General Energy, 3 (38), 57-61 [in English].
3. Shraiber, O.A., & Antonets, I.V. (2016). Determination of the optimal conditions of the work of a hollow scrubber for gas cleaning from solid particles. Problemy zagal'noi energetyky - The Problems of General Energy, 2 (45), 57-60 [in Ukrainian]. https://doi.org/10.15407/pge2016.02.057
4. Uzhov, V.N., Valdberh, A.Yu., Miahkov, B.Y., & Reshydov, Y.K. (1981). Ochystka promyshlennykh hazov ot pyly. Moscow: Khymiia [in Russian].
5. Aliev, H.M.-A. (1986). Tekhnika pyleulavlivaniia i ochistki promyshlennykh hazov. Moscow: Metallurhiia [in Russian].
6. Kropp, L.Y., & Akbrut. A.Y. (1977). Zolouloviteli s trubami Venturi na teplovykh elektrostantsiiakh. Moscow: Enerhiia [in Russian].