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96610 A NEW APPROACH TO DETECT AND IDENTIFY HYDROCARBON LEAKS IN REFINERY COOLING SYSTEMS

Picture for 96610 A NEW APPROACH TO DETECT AND IDENTIFY
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Product Number: 51300-96610-SG
ISBN: 96610 1996 CP
Author: Chris Spurrell, Andrew M. Harris
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Heat exchanger hydrocarbon leaks into refinery cooling water systems have long been the cause of corrosion, fouling and loss of heat transfer due to the presence of the hydrocarbon and the resulting increased microbiological growth. Typical methods to control microbiological growth in the presence of hydrocarbons include the use of oxidizing and nonoxidizing biocides. Excessive use of these materials can cause additional corrosion and be prohibitively expensive. Common methods of checking exchanger inlets and outlets for hydrocarbon or oxidant residual are oftenunable to pinpoint a leaking exchanger. The paper details two methods by which light and heavy hydrocarbons may be positively identified by using either activated carbon or a gas trap followed by gas chromatography. Once the hydrocarbon is positively identified, the task of finding the leaking exchanger is simplified dramatically and corrective measures can be taken. Keywords: activated carbon, cooling water, corrosion, deposition, fingerprint, fouling, gas chromatograph, gas trap, heat exchanger, heat transfer, hydrocarbon, hydrocarbon contamination, hydrocarbon identification, microbiologically induced corrosion, microbiological growth, solvent extraction.
Heat exchanger hydrocarbon leaks into refinery cooling water systems have long been the cause of corrosion, fouling and loss of heat transfer due to the presence of the hydrocarbon and the resulting increased microbiological growth. Typical methods to control microbiological growth in the presence of hydrocarbons include the use of oxidizing and nonoxidizing biocides. Excessive use of these materials can cause additional corrosion and be prohibitively expensive. Common methods of checking exchanger inlets and outlets for hydrocarbon or oxidant residual are oftenunable to pinpoint a leaking exchanger. The paper details two methods by which light and heavy hydrocarbons may be positively identified by using either activated carbon or a gas trap followed by gas chromatography. Once the hydrocarbon is positively identified, the task of finding the leaking exchanger is simplified dramatically and corrective measures can be taken. Keywords: activated carbon, cooling water, corrosion, deposition, fingerprint, fouling, gas chromatograph, gas trap, heat exchanger, heat transfer, hydrocarbon, hydrocarbon contamination, hydrocarbon identification, microbiologically induced corrosion, microbiological growth, solvent extraction.
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ISBN: 00691 2000 CP
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Proper heat treatment on stainless steel (SS) heat exchanger tubes is very important to obtain the expected stress corrosion cracking (SCC) and corrosion resistance of the material. This paper will discuss three recent issues that have arisen on this topic.
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