Open Science Research Excellence

Open Science Index

Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 31105

Select areas to restrict search in scientific publication database:
Condition Monitoring for Twin-Fluid Nozzles with Internal Mixing
Liquid sprays of water are frequently used in air pollution control for gas cooling purposes and for gas cleaning. Twin-fluid nozzles with internal mixing are often used for these purposes because of the small size of the drops produced. In these nozzles the liquid is dispersed by compressed air or another pressurized gas. In high efficiency scrubbers for particle separation, several nozzles are operated in parallel because of the size of the cross section. In such scrubbers, the scrubbing water has to be re-circulated. Precipitation of some solid material can occur in the liquid circuit, caused by chemical reactions. When such precipitations are detached from the place of formation, they can partly or totally block the liquid flow to a nozzle. Due to the resulting unbalanced supply of the nozzles with water and gas, the efficiency of separation decreases. Thus, the nozzles have to be cleaned if a certain fraction of blockages is reached. The aim of this study was to provide a tool for continuously monitoring the status of the nozzles of a scrubber based on the available operation data (water flow, air flow, water pressure and air pressure). The difference between the air pressure and the water pressure is not well suited for this purpose, because the difference is quite small and therefore very exact calibration of the pressure measurement would be required. Therefore, an equation for the reference air flow of a nozzle at the actual water flow and operation pressure was derived. This flow can be compared with the actual air flow for assessment of the status of the nozzles.
Digital Object Identifier (DOI):


[1] G. Ferreira, J.A. García, F. Barreras, A. Lozano, and E. Lincheta. “Design optimization of twin-fluid atomizers with an internal mixing chamber for heavy fuel oils,” Fuel Proc. Technol., vol. 90, no. 2, pp. 270-278, 2009.
[2] P.K. Jensen, L.N. Jørgensen, and E. Kirknel. “Biological efficacy of herbicides and fungicides applied with low-drift and twin-fluid nozzles,” Corp Protect., vol. 20, no. 1, pp. 57-64, 2001.
[3] Z. Li, Y. Wu, H. Yang, C. Cai, H. Zhang, K. Hashiguchi, K. Takeno, and J. Lu, “Effect of liquid viscosity on atomization in an internal-mixing twin-fluid atomizer,” Fuel, vol. 103, pp. 486-494, 2013.
[4] B. Mulhem, U. Fritsching, G. Schulte, and K. Bauckhage, “Characterisation of Twin-Fluid Atomisation for Suspensions,” Proc. 9th Int. Conf. on Liquid Atomization and Spray Systems ICLASS 2003, July 13-18, Sorrento, Italy, 2003.
[5] C.E. Ejim, M.A. Rahman, A. Amirfazli, and B.A. Fleck, “Effects of liquid viscosity and surface tension on atomization in two-phase, gas/liquid fluid coker nozzles. Fuel, vol. 89, pp. 1872–1882, 2010.
[6] B. Raj Mohan, S. N. Reddy and B. C. Meikap, “Removal of SO2 from Industrial Effluents by a Novel Twin Fluid Air-Assist Atomized Spray Scrubber,” Ind. Eng. Chem. Res., vol. 47, no. 20, pp. 7833–7840, 2008.
[7] B. Raj Mohan, R.K. Jain, and B.C. Meikap, “Comprehensive analysis for prediction of dust removal efficiency using twin-fluid atomization in a spray scrubber,” Sep. Purif. Technol., vol. 63, no. 2, pp. 269–277, 2008.
[8] J.-H. Gao, S. Wang, J.-M. Gao, Q. Du, S.-H. W. and Y.-K. Q. „Study on Process of SO2 Removal in Flue Gas by White Lime Slurry Atomization in Riser,“ Proc. of the CSEE, vol. 27, no. 29, pp. 40-43, 2007.
[9] C. Lanzerstorfer, “Solid/Liquid - Gas Separation with Wet Scrubbers and Wet Electrostatic Precipitators – A Review”. Filtr. Separat., vol. 37, no. 5, pp. 30-34, 2000.
[10] J. Krames,and H. Büttner, “The Cyclonic Scrubber – a High Efficient Wet Separator,” Chem. Eng. Tech., vol. 17, no. 2, pp. 73-89, 1994.
[11] L. Noska, and C. Lanzerstorfer, „Staubabscheidung mit Düsenwäschern,“ Tagungsband Symposium Luftreinhaltung, GÖCh, Nov. 6-7, Wien/Austria, 1997, pp. 153–164.
[12] T. Leuwerink, and A. van der Panne, “Operating results of emission optimized sintering with Airfine gas cleaning,” Stahl Eisen, vol. 121, no. 5, pp. 29-34, 2001.
[13] K. Hofstadler, C. Lanzerstorfer, and W Gebert, “Fine dedusting and waste gas cleaning of ore sintering plants with AIRFINE,” Revue Metallurgie-CIT, vol. 96, pp. 1191-1196, 1999.
[14] H. Oertel (ed.), Prandtl-Essentials of Fluid Mechanics, Applied Mathematical Sciences 158, 3rd Ed., New York: Springer Verlag, 2010.
[15] B.R. Munson, D.F. Young, and T.H. Okiishi. Fundamentals of Fluid Mechanics, 5th Ed., Hoboken: John Wiley & Sons, 2006.
Vol:15 No:03 2021Vol:15 No:02 2021Vol:15 No:01 2021
Vol:14 No:12 2020Vol:14 No:11 2020Vol:14 No:10 2020Vol:14 No:09 2020Vol:14 No:08 2020Vol:14 No:07 2020Vol:14 No:06 2020Vol:14 No:05 2020Vol:14 No:04 2020Vol:14 No:03 2020Vol:14 No:02 2020Vol:14 No:01 2020
Vol:13 No:12 2019Vol:13 No:11 2019Vol:13 No:10 2019Vol:13 No:09 2019Vol:13 No:08 2019Vol:13 No:07 2019Vol:13 No:06 2019Vol:13 No:05 2019Vol:13 No:04 2019Vol:13 No:03 2019Vol:13 No:02 2019Vol:13 No:01 2019
Vol:12 No:12 2018Vol:12 No:11 2018Vol:12 No:10 2018Vol:12 No:09 2018Vol:12 No:08 2018Vol:12 No:07 2018Vol:12 No:06 2018Vol:12 No:05 2018Vol:12 No:04 2018Vol:12 No:03 2018Vol:12 No:02 2018Vol:12 No:01 2018
Vol:11 No:12 2017Vol:11 No:11 2017Vol:11 No:10 2017Vol:11 No:09 2017Vol:11 No:08 2017Vol:11 No:07 2017Vol:11 No:06 2017Vol:11 No:05 2017Vol:11 No:04 2017Vol:11 No:03 2017Vol:11 No:02 2017Vol:11 No:01 2017
Vol:10 No:12 2016Vol:10 No:11 2016Vol:10 No:10 2016Vol:10 No:09 2016Vol:10 No:08 2016Vol:10 No:07 2016Vol:10 No:06 2016Vol:10 No:05 2016Vol:10 No:04 2016Vol:10 No:03 2016Vol:10 No:02 2016Vol:10 No:01 2016
Vol:9 No:12 2015Vol:9 No:11 2015Vol:9 No:10 2015Vol:9 No:09 2015Vol:9 No:08 2015Vol:9 No:07 2015Vol:9 No:06 2015Vol:9 No:05 2015Vol:9 No:04 2015Vol:9 No:03 2015Vol:9 No:02 2015Vol:9 No:01 2015
Vol:8 No:12 2014Vol:8 No:11 2014Vol:8 No:10 2014Vol:8 No:09 2014Vol:8 No:08 2014Vol:8 No:07 2014Vol:8 No:06 2014Vol:8 No:05 2014Vol:8 No:04 2014Vol:8 No:03 2014Vol:8 No:02 2014Vol:8 No:01 2014
Vol:7 No:12 2013Vol:7 No:11 2013Vol:7 No:10 2013Vol:7 No:09 2013Vol:7 No:08 2013Vol:7 No:07 2013Vol:7 No:06 2013Vol:7 No:05 2013Vol:7 No:04 2013Vol:7 No:03 2013Vol:7 No:02 2013Vol:7 No:01 2013
Vol:6 No:12 2012Vol:6 No:11 2012Vol:6 No:10 2012Vol:6 No:09 2012Vol:6 No:08 2012Vol:6 No:07 2012Vol:6 No:06 2012Vol:6 No:05 2012Vol:6 No:04 2012Vol:6 No:03 2012Vol:6 No:02 2012Vol:6 No:01 2012
Vol:5 No:12 2011Vol:5 No:11 2011Vol:5 No:10 2011Vol:5 No:09 2011Vol:5 No:08 2011Vol:5 No:07 2011Vol:5 No:06 2011Vol:5 No:05 2011Vol:5 No:04 2011Vol:5 No:03 2011Vol:5 No:02 2011Vol:5 No:01 2011
Vol:4 No:12 2010Vol:4 No:11 2010Vol:4 No:10 2010Vol:4 No:09 2010Vol:4 No:08 2010Vol:4 No:07 2010Vol:4 No:06 2010Vol:4 No:05 2010Vol:4 No:04 2010Vol:4 No:03 2010Vol:4 No:02 2010Vol:4 No:01 2010
Vol:3 No:12 2009Vol:3 No:11 2009Vol:3 No:10 2009Vol:3 No:09 2009Vol:3 No:08 2009Vol:3 No:07 2009Vol:3 No:06 2009Vol:3 No:05 2009Vol:3 No:04 2009Vol:3 No:03 2009Vol:3 No:02 2009Vol:3 No:01 2009
Vol:2 No:12 2008Vol:2 No:11 2008Vol:2 No:10 2008Vol:2 No:09 2008Vol:2 No:08 2008Vol:2 No:07 2008Vol:2 No:06 2008Vol:2 No:05 2008Vol:2 No:04 2008Vol:2 No:03 2008Vol:2 No:02 2008Vol:2 No:01 2008
Vol:1 No:12 2007Vol:1 No:11 2007Vol:1 No:10 2007Vol:1 No:09 2007Vol:1 No:08 2007Vol:1 No:07 2007Vol:1 No:06 2007Vol:1 No:05 2007Vol:1 No:04 2007Vol:1 No:03 2007Vol:1 No:02 2007Vol:1 No:01 2007