This Phase II work in NH3-dominated sour waters studied the impact of several process variables including NH4HS concentration, NH3 partial pressure, H2S partial pressure, temperature, cyanide concentration, and velocity (wall shear stress).
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The purpose of this paper will be to: (a) review published literature to characterize and classify speciation related to the types of impurities encountered in opportunity crudes; and (b) describe and categorize published case studies of corrosion in crude unit overhead operations.
It has been documented that improved desalting efficiency reduces the risk of corrosion and vice versa. This paper introduces a new way of using the desalting process to help control overhead corrosion. The end result is the corrosion engineer has a new tool to reduce the risk of salt formation.
Included: Petroleum Refining Processes & Corrosion. Coking & Cracking, Alkylation, Sulfur Plants. Hydroprocessing, Reforming. Hydrogen, Methanol, Ammonia, Gas Treating. Piping, Gathering Equipment, Tankage. See full TOC below.