Anodic Protection: Theory and Practice in the Prevention of - download pdf or read online
By Olen L. Riggs Jr., Carl E. Locke, Norman E. Hamner (auth.)
The targets of this ebook are to provide technical information regarding anodic seasoned tection, clarify how financial analyses are made to figure out even if it may be used, and describe the various functions and gear. Lim itations of the strategy may be mentioned. Technological adjustments that experience ended in better temperatures, pres sures, and velocities raise corrosion charges and markedly impression fabrics choice and layout judgements. non-stop cycle structures impose elevated calls for on process reliability. New approaches require extra refined gear made up of dearer metals that are usually in brief offer and topic to the vagaries of overseas trade. The influence of constant inflation affects judgements regarding capital bills and upkeep charges. a few difficulties as a result of those concerns could be solved, or options simplified, by means of anodic defense. Technical and clinical info is gifted on functions to business apparatus, economics, layout and install, operation and upkeep, electrochemical rules, laboratory assessments and techniques. A ancient precis, patent checklist, thesaurus of phrases, and an issue index are integrated. you will need to recognize that a lot of the knowledge has been from the unique paintings of others, together with the courses of many friends.
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Extra resources for Anodic Protection: Theory and Practice in the Prevention of Corrosion
Platinum-clad electrodes are excellent electrochemically. In sulfuric acid hydrogen reduction is the only reaction that occurs. Although they are permanent, they are usually not fabricated in large sizes because of cost. Hastelloy C Cathodes This chromium~nickel alloy (l6Cr~ 16Mo~5Fe~4W ~bal Ni) has been used in a few applications. 9 Mounting methods for these tubular electrodes are shown in Figure 3-5. Figure 3-6 shows an example of these electrode mountings extending through a water box. Hastelloy C was also used in tank cars carrying nitrogen fertilizer solu- 54 Chapter 3 TEFLON PACKING COMPOUND CHEVRON PACKING WATER TEFLON OR PVC SHEATH ACID WATER SEAL UPPER STUFFING BOX ACID SEAL Figure 3-5.
2(9), 69 (1963). A. Andrezej, Ochr. Koroz. 19(1), 19 (1976); Ca 85, 53593g (1976). , private communication. F. A. S. Patent No. 3,483,101, December 9 1969. S. Kuzub, et al .. Khim. Tekhnol. (Kiev). No. 1,63 (1974); Ca 81,57504 (1974). B. F. Lyle, Mater. Perform. 15(8), 38 (1976). A. Supronov, Kh. S. Baburina, and Tr. Ivanov, Khim. Tecknol. Inst. 12, 180 (1970); Ca, 79, 142218g (1973). C Redden, Mater. Perform. 5(2), 51 (1966). C Redden, Chem. Process. October 1964. R. Hays, Mater. Perform. 5(9), 46 (1966).
The trials were terminated when problems developed with the maintenance of the systems. The truck for 93% acid used a portable control and power system and required a larger, stationary, power supply. The latter was used to passivate the tank after it was filled, while the portable unit was used to maintain protection during the delivery trip. Good results from this system did not have sufficient impact to induce plant personnel to allocate time to the truck after it was filled or to the anodic protection system.