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51318-11041-Performance of Monel pipeline in benzene processing unit

Picture for Performance of Monel pipeline in benzene processing unit
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A comprehensive corrosion investigation of a pipeline made of UNS N04400. Samples of the failed pipeline were obtained for investigation. The study concludes that the failure can be attributed to acidic corrosion that formed inside the pipeline.

Product Number: 51318-11041-SG
Author: Hussain Al-Mahamadh / Ali H. Al-Shawaf
Publication Date: 2018
Industry: Petroleum Refining
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$20.00

Nickel-based alloy have an excellent corrosion resistance and good mechanical properties. The nickel-copper alloys (UNS(1) N04400) are used for broad of applications in an equally broad range of industries including chemical and petrochemical processing and oil and gas extraction. This paper present a comprehensive corrosion investigation of benzene condenser pipeline made of UNS N04400 at one of Saudi Basic Industries Corporation affiliates. Samples of the failed pipeline were obtained for analytical investigation. Metallographic examination was performed to evaluate microstructure of the failed pipe. The chemistry of a deposit collected from the pipe was analyzed by X-ray fluorescence (XRF) and carbon/ sulfur (C/S) analyzer. Scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy was used to study the corrosion damage morphology and the chemical composition of the deposit at the leak points. The study concludes that the pipe failure attributed to acidic corrosion that form inside the pipeline.

Key words: Acidic corrosion, Nickel alloy, Benzene pipeline.

Nickel-based alloy have an excellent corrosion resistance and good mechanical properties. The nickel-copper alloys (UNS(1) N04400) are used for broad of applications in an equally broad range of industries including chemical and petrochemical processing and oil and gas extraction. This paper present a comprehensive corrosion investigation of benzene condenser pipeline made of UNS N04400 at one of Saudi Basic Industries Corporation affiliates. Samples of the failed pipeline were obtained for analytical investigation. Metallographic examination was performed to evaluate microstructure of the failed pipe. The chemistry of a deposit collected from the pipe was analyzed by X-ray fluorescence (XRF) and carbon/ sulfur (C/S) analyzer. Scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy was used to study the corrosion damage morphology and the chemical composition of the deposit at the leak points. The study concludes that the pipe failure attributed to acidic corrosion that form inside the pipeline.

Key words: Acidic corrosion, Nickel alloy, Benzene pipeline.

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