The paper analyzed the composition of the scaling substance of the E252 heat exchanger of 20 million tons cracking unit of Liaoyang petrochemical company with thermogravimetric analysis and ultraviolet fluorescence and atomic absorption spectrometry. We did the qualitative and quantitative determination on the scaling substance. We confirmed that the scaling substance was composed of the petroleum coke and sulfur element and iron element. There were 10.1% sulfur elements and 4.4% iron elements in the scaling substance. We found out the major reason that resulted in the scaling substance was the corrosion of the container by the sulfur compounds in the chemical material of the cracking unit.

You can access this article if you purchase or spend a download.