By Wayne Frenier
This e-book is a research of the advancements during the last 3 a long time within the expertise applied to chemically fresh business gear. subject matters comprise natural acid and chelant solvents, new inhibitors, superior strategies for elimination refinery/chemical plant deposits, and the chemical mechanisms underlying a number of the present methods.
Content:
entrance topic
• Preface
• desk of Contents
1. advent
2. Solvents for elimination Inorganic Deposits
three. Mechanisms of Iron Oxide and Copper Dissolution
four. Corrosion, Passivation, and Inhibition
five. Solvents for removal Organic/Mixed Deposits
6. Disposal of Chemical cleansing Wastes
7. cleansing Nuclear gear
eight. detailed suggestions
• normal Conclusions
Index
Read or Download Technology for Chemical Cleaning of Industrial Equipment PDF
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Additional info for Technology for Chemical Cleaning of Industrial Equipment
Example text
B. Corrosion, 1984, 40(12), 663-668. 55. Lesinski, C. A. S. Patent 3,308,065, 1967. 56. Harriman, L. W. etal. US. 81 1, 1969. 57. Alfano, S . S. Patent 3,072,502, 1963. 58. Bell, W. E. S. Patent 3,248,269, 1966. 59. Pitzer, E. C. US. Patent 3,297,580, 1967. 60. Johnson, A. B. et a/. Paper 38, presented at the 33rd Corrosion Forum, NACE International: Houston, TX, 1978. 61. Pettit, P. ; McTgue, P. F. Paper 208, presented at the 33rd Corrosion Forum, NACE International: Houston, TX, 1978. 62. Martell, A.
Mundis, J. A. Presented at the American Power Conference: Chicago, IL, 1982. 46. Bradbury, 0. et al. Presented at the Conference on Decontamination of Nuclear Facilities, LaGrange Park, IL, 1982; pp. 3-21. 47. ; Azuma, K. Trans. AIM€, 1968, 24(2), 1025. 48. ; Ferrier, A. Rep. RE438, Institut des Recherches de la Siderurgie Franchise: St. Germainen-Laye, France, 1977. 49. Fields, W. M. Presented at the 2nd International Congress on Metallic Corrosion: Houston, TX, 1963. 50. McPherson, W. ; Martin, J.
33) rate determining CHAPTER 3: Mechanisms of Iron Oxide and Copper Dissolution 47 The major oxidizing agent for the EDTA system is Fe(lll)EDTA,while the external oxidizer (oxygen, nitrite) oxidizes the copper in the iron citrate system. The external oxidizer does oxidize the ferrous citrate to ferric citrate, but this species does not dissolve much of the copper; it actually acts as a sink for the external oxidizer. The only benefit of using the iron citrate solution is that an additional oxidizing fill of the unit is avoided.
