Effect of Different Acids on the Scale in Pipelines of Linz-Donawitz (LD) Plant (Steel Making Process)
Affiliation(s)
1 Chemical Engineering, Bits-Pilani KK Birla Goa Campus, Zuarinagar, India. 2 TATA Steel, Jamshedpur, India.
1 Chemical Engineering, Bits-Pilani KK Birla Goa Campus, Zuarinagar, India. 2 TATA Steel, Jamshedpur, India.
ABSTRACT
In this report we present the effect of different acids on the scales taken from LD plant. The main aspect of the problem is to find a suitable concentration and type of acid to reduce/remove the deposition of scale in the pipeline. The analysis is carried out using a combination of suggestions dictated by experimental evidence and suitable mathematical techniques. Result reveals that 5% solution of Hydrochloric Acid is most effective to dissolve the scale in a specified time at room temperature. The order of effectiveness to dissolve the scale deposits is HCL > HNO3 > H3NSO3> H2C2O4 > H2SO4. But when it comes to the corrosion in the pipe the order of corrosion caused by acids is HCL > H3NSO3 > HNO3. So, when we consider both the results HNO3 is the most suitable acid with respect to both scale deposition and corrosion of the pipelines. Predictions of the data are compared with experiments finding a remarkable agreement with the available data.
In this report we present the effect of different acids on the scales taken from LD plant. The main aspect of the problem is to find a suitable concentration and type of acid to reduce/remove the deposition of scale in the pipeline. The analysis is carried out using a combination of suggestions dictated by experimental evidence and suitable mathematical techniques. Result reveals that 5% solution of Hydrochloric Acid is most effective to dissolve the scale in a specified time at room temperature. The order of effectiveness to dissolve the scale deposits is HCL > HNO3 > H3NSO3> H2C2O4 > H2SO4. But when it comes to the corrosion in the pipe the order of corrosion caused by acids is HCL > H3NSO3 > HNO3. So, when we consider both the results HNO3 is the most suitable acid with respect to both scale deposition and corrosion of the pipelines. Predictions of the data are compared with experiments finding a remarkable agreement with the available data.
Cite this paper
Swastic and Das, S. (2015) Effect of Different Acids on the Scale in Pipelines of Linz-Donawitz (LD) Plant (Steel Making Process). Advances in Chemical Engineering and Science, 5, 192-196. doi: 10.4236/aces.2015.52021.
Swastic and Das, S. (2015) Effect of Different Acids on the Scale in Pipelines of Linz-Donawitz (LD) Plant (Steel Making Process). Advances in Chemical Engineering and Science, 5, 192-196. doi: 10.4236/aces.2015.52021.
References
[1] Reddy, M.M. and Hoch, A.R. (2001) Calcite Crystal Growth Rate Inhibition by Polycarboxylic Acids. Journal of Colloid and Interface Science, 235, 365-370.
http://dx.doi.org/10.1006/jcis.2000.7378 [2] Chong, H.T. and Sheikholeslami, R. (2001) Thermodynamics and Kinetics for Mixed Calcium Carbonate and Calcium Sulphate Precipitation. Chemical Engineering Science, 56, 5391-5400.
http://dx.doi.org/10.1016/S0009-2509(01)00237-8 [3] Kirboga, S. and Oner, M. (2013) Effect of the Experimental Parameters on Calcium Carbonate Precipitation. Chemical Engineering Transactions, 32, 2119-2124.
http://dx.doi.org/10.3303/CET1332354 [4] Muryanto, S., Bayuseno, A.P., Sediono, W., Mangestiyono, W. and Sutrisno (2012) Development of a Versatile Laboratory Project for Scale Formation and Control. Education for Chemical Engineers, 7, e78-e84.
http://dx.doi.org/10.1016/j.ece.2012.04.002 [5] Hoang, T.A., Ang, H.M. and Rohl, A.L. (2007) Effects of Temperature on the Scaling of Calcium Sulphate in Pipes. Powder Technology, 179, 31-37.
http://dx.doi.org/10.1016/j.powtec.2006.11.013 [6] Greenlee, L.F., Testa, F., Lawler, D.F., Freeman, B.D. and Moulin, P. (2010) The Effect of Antiscalant Addition on Calcium Carbonate Precipitation for a Simplified Synthetic Brackish Water Reverse Osmosis Concentrate. Water Research, 44, 2957-2969.
http://dx.doi.org/10.1016/j.watres.2010.02.024 [7] Tang, Y.M., Yang, W.Z., Yin, X.S., Liu, Y., Yin, P.W. and Wang, J.T. (2008) Investigation of CaCO3 Scale Inhibition by PAA, ATMP and PAPEMP. Desalination, 228, 55-60.
http://dx.doi.org/10.1016/j.desal.2007.08.006
[1] Reddy, M.M. and Hoch, A.R. (2001) Calcite Crystal Growth Rate Inhibition by Polycarboxylic Acids. Journal of Colloid and Interface Science, 235, 365-370.
http://dx.doi.org/10.1006/jcis.2000.7378 [2] Chong, H.T. and Sheikholeslami, R. (2001) Thermodynamics and Kinetics for Mixed Calcium Carbonate and Calcium Sulphate Precipitation. Chemical Engineering Science, 56, 5391-5400.
http://dx.doi.org/10.1016/S0009-2509(01)00237-8 [3] Kirboga, S. and Oner, M. (2013) Effect of the Experimental Parameters on Calcium Carbonate Precipitation. Chemical Engineering Transactions, 32, 2119-2124.
http://dx.doi.org/10.3303/CET1332354 [4] Muryanto, S., Bayuseno, A.P., Sediono, W., Mangestiyono, W. and Sutrisno (2012) Development of a Versatile Laboratory Project for Scale Formation and Control. Education for Chemical Engineers, 7, e78-e84.
http://dx.doi.org/10.1016/j.ece.2012.04.002 [5] Hoang, T.A., Ang, H.M. and Rohl, A.L. (2007) Effects of Temperature on the Scaling of Calcium Sulphate in Pipes. Powder Technology, 179, 31-37.
http://dx.doi.org/10.1016/j.powtec.2006.11.013 [6] Greenlee, L.F., Testa, F., Lawler, D.F., Freeman, B.D. and Moulin, P. (2010) The Effect of Antiscalant Addition on Calcium Carbonate Precipitation for a Simplified Synthetic Brackish Water Reverse Osmosis Concentrate. Water Research, 44, 2957-2969.
http://dx.doi.org/10.1016/j.watres.2010.02.024 [7] Tang, Y.M., Yang, W.Z., Yin, X.S., Liu, Y., Yin, P.W. and Wang, J.T. (2008) Investigation of CaCO3 Scale Inhibition by PAA, ATMP and PAPEMP. Desalination, 228, 55-60.
http://dx.doi.org/10.1016/j.desal.2007.08.006