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10349 Prediction and Assessment of Ammonium Bisulfide Corrosion Under Refinery Sour Water Service Conditions-Part 2

Picture for 10349 Prediction and Assessment of Ammonium Bisulfide Corrosion Under Refinery Sour Water
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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).

Product Number: 51300-10349-SG
ISBN: 10349 2010 CP
Author: Richard J. Horvath, Vishal V. Lagad, Sridhar Srinivasan and Russell D. Kane
Publication Date: 2010
Industries: Materials Selection and Design , Science of Corrosion
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This paper summarizes results of Phase II of a joint industry program (JIP) that addressed ammonium bisulfide (NH4HS) corrosion. This phase of the program was focused on NH3-dominated sour waters typically found in refinery services such as the overhead systems of some sour water stripper units. Phase II extended the initial research work in Phase I of the program, commonly referred to as the Sour Water JIP, which addressed NH4HS corrosion in H2S-dominated sour waters. 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). Data collected from laboratory tests designed to characterize these process variables were used to develop an enhanced software tool to predict corrosion rates for six materials evaluated in the program. Key aspects of the data, parametric behavior, and corrosion response of the different materials evaluated in the Phase II work are highlighted in this paper.

 

Keywords: sour water, ammonium bisulfide, NH4HS, hydrogen sulfide, H2S, ammonia, NH3, partial pressure, isocorrosion diagram, temperature, cyanide, velocity, wall shear stress, materials selection, software, sour water stripper.

This paper summarizes results of Phase II of a joint industry program (JIP) that addressed ammonium bisulfide (NH4HS) corrosion. This phase of the program was focused on NH3-dominated sour waters typically found in refinery services such as the overhead systems of some sour water stripper units. Phase II extended the initial research work in Phase I of the program, commonly referred to as the Sour Water JIP, which addressed NH4HS corrosion in H2S-dominated sour waters. 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). Data collected from laboratory tests designed to characterize these process variables were used to develop an enhanced software tool to predict corrosion rates for six materials evaluated in the program. Key aspects of the data, parametric behavior, and corrosion response of the different materials evaluated in the Phase II work are highlighted in this paper.

 

Keywords: sour water, ammonium bisulfide, NH4HS, hydrogen sulfide, H2S, ammonia, NH3, partial pressure, isocorrosion diagram, temperature, cyanide, velocity, wall shear stress, materials selection, software, sour water stripper.

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Summarizes results from Phase III of the joint industry program (JIP) on refinery alkaline sour water (ammonium bisulfide) corrosion. Phase III included a comprehensive engineering analysis of data from all three phases of the Sour Water JIP.
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06576 PREDICTION AND ASSESSMENT OF AMMONIUM BISULFIDE CORROSION UNDER REFINERY SOUR WATER SERVICE CONDITIONS

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ISBN: 06576 2006 CP
Author: Richard J. Horvath, Michael S. Cayard, Russell D. Kane
Publication Date: 2006
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This paper summarizes results of a joint industry program (JIP) to address ammonium bisulfide (NH 4 HS) corrosion in H 2 S-dominated alkaline sour waters typically found in refinery services such as the reactor effluent air cooler (REAC) systems of hydroprocessing units.
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06577 PREDICTION OF AMMONIUM BISULFIDE CORROSION AND VALIDATION WITH REFINERY PLANT EXPERIENCE

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