Idle refinery equipment protection with volatile corrosion inhibitor in development A clean, flat glass,ugg australia, pressed glass and then 25mm thick square steel. The three groups of samples in a desiccator plate, after 30min warm-up by 65 ℃,uggs nederland outlet, the rapid release of glycerol solution containing 500ml70 dryer in the dryer to release 50 ± 2 ℃ constant temperature box, 20h after the removal examination, results in Table 3. Table 3VPI contacts with the A3 steel corrosion test results shown in Table 3, V2 and dicyclohexylamine nitrite as corrosion of steel non-contact. Shows the composite vapor phase corrosion inhibitor developed in direct contact with the steel will not cause corrosion. 2.4 confined space reduction of volatile experiment with a confined space reduction of volatile vapor phase corrosion inhibitor test for the evaporation rate has been studied, the results in Table 4. MAO Xin-sheet, etc.: idle refinery equipment corrosion inhibitor to protect the development of a gas confined space, Table 4 72h volatile weight loss rate (%) Figure 2, the cathodic polarization curves shown in Figure 3. Table 4 shows, V2 24h loss rate of vapor phase corrosion inhibitor commercially available corrosion inhibitor with the VPI-A close, but the weight loss rate increased 48h and 72h value is much smaller than VPI-A,ugg saappaat, the increase in value after 24h only nitrite dicyclohexylamine 2 times, with the initial fast evaporation,uggs nederland, slow evaporation characteristics of long-term. V2 volatile characteristics of this inhibitor can inhibit the corrosion of metal in advance, but also provide a longer protection period, the compound has good inhibition effect. 2.5 sealed test to test the durability of V2 inhibitor, in the laboratory for six months (2000.12.20 - 2001.6.20) archive test, while a 260 with VPI, VPI-commercial A for comparison, the results in Table 5. Table 5A3 steel storage test results (at room temperature, 6 months) we can see from Table 5, V2 inhibitor after 6 months storage test, the corrosion rate of 98.7,ugg stivali, the annual erosion rate of 0.0025mm, its performance over VPI260, This shows that the vapor phase corrosion inhibitor developed by V2 compound has good durability, able to provide a longer protection period. 2.6 In order to protect the test site testing laboratory for the development of vapor phase corrosion inhibitor use and protection of on-site effects, the preparation of 1 ton V2 inhibitor,ugg udsalg, in January 2001 an oil refinery in the gas separation plant two alkylation sets of air separation units in use, protective equipment, including propylene distillation column T-203A, T a 203B and propylene distillation column reflux tank V-204. After filling the required pharmaceutical suspension standard corrosion test, sealing manhole. As production needs, the gas refinery alkylation unit to enable the sub-site protection test on March 20, 2001 end, the device checks unsealed wall and tower trays office, no obvious rust, corrosion inspection specimens, found V2 tower and container by vapor phase corrosion inhibitor to protect both sides of the specimens are bright as new, but empty of serious corrosion of the specimen, calculated, field test specimen corrosion rate of 9 §. 8 above,uggs skor, the corrosion rate of less than 0.0015mm / a, V2 Vapor Corrosion Inhibitors shows strong, on-site product protection,ugg australia, suitable for refinery use of idle equipment protection. 2.7 Electrochemical test results using potentiodynamic scanning method of measuring polarization curves V2 vapor phase corrosion inhibitor, potential scan rate of 0.5mV / s, anodic polarization curves measured U look stubborn foot snow rJ . Single-button current density / / aA. cm-2 anodic polarization curve of electrical percolation density / / aA · cm 3 cathode polarization curve can be seen from the figure, the V2 of A3 steel corrosion potential is shifted more than a blank 137mV, the anode buffer the obvious effect of erosion, and close to the cathodic polarization curves and the blank, indicating that V2 is suppressed based anode vapor phase corrosion inhibitor. 3 Conclusions (1) V2 is a black metal compound vapor corrosion inhibitors, inhibition efficiency of 98.7, sealed the results are satisfactory. (2) field test results show that, V2 can be used for refinery idle equipment protection. (3) V2 volatile corrosion inhibitors with the initial fast, long-term slow evaporation characteristics. (4) V2 is a suppressed-based anode vapor phase corrosion inhibitor. (5) V2 inhibitor cost-effective,ugg saappaat suomesta, production and easy to use, with industrial applications. References: E1] Yin-Shun Wu, et al. Corrosion test methods and corrosion detection technology EM3. Beijing: Chemical Industry Press, 1996. Ez3 Xunai Xin, et al. Accelerated atmospheric corrosion testing a new program [J]. Journal of Chinese Society for Corrosion and Protection, 1990,ugg suomi,10 (3): 228. E33 Zhang Daquan, and so on. Acid morpholine salt corrosion properties of gas [J]. Corrosion and Protection, 1998,19 (6): 250 - 252. E43 Weygand, et al. Cyclohexylamine carbonate gas protection equipment for chemical research 'EJ]. Chemical Machinery, 2000,27 (4): 190. 相关的主题文章： Cold alkaline resistance of alloy 800 stress corro Low concentration of solid caustic soda production Material failure of the twentieth century, two riv
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