Author(s)

Swastic  ¹, Suprotim Das²

¹Chemical Engineering, Bits-Pilani KK Birla Goa Campus, Zuarinagar, India.
²TATA Steel, Jamshedpur, India.

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.

Scales, LD Plant, Acids

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.