Published August 2010
Influence of potassium salts of nitroderivative high -olefines in 1% NaCl soluted in CO2 saturated water on steel corrosion
S.R. RasulovOne of the serious problems of oil extracting industry is the corrosion process. It is necessary to mention that difficulties of the problem consist of that together with corrosion process salt sedimentation and speed development of sulphate restoring bacteria (SRB) processes proceed. It is connected with that separating of hydrogen sulfide adhesed by SRB on the metal surface and promotes formation more acid environment, as a result of which intensive corrosion process proceeds. From the abovementioned it is clear that it is necessary to solve these three problems together. With this purpose it is important to create high effective and polyfunctional inhibitors-bactericides. Olefines are the most capable to the reactions among organic combinations and considering that the majority of the inhibitors consist of azote combinations then the most perspective method of creating inhibitors is the obtaining of azote derivative high molecular olefines. For experiments a-olefines C8 , C12 , C14 , C16-18 , received by ethylene oligomerization and also propylene trimmer and tetramers have been taken. Our purpose is to synthesize water-soluted salts of nitroderivatives on the basis of above mentioned olefines using tautomer properties and to check them as inhibitors-bactericides. Potassium salts of nitron acids on the -olefines C8 , C12 , C14 , C16-18 , and also nitron acids on the basis of trimmer and propylene tetramer have been received. Potassium salts of corresponding nitro-combinations received by nitrating of high mentioned olefines with 5761 % azote acid in initiator presence have been synthesized. Synthesized salts can be soluble condition of water and isopropyl alcohol. In all cases there are 20 % of nitronate salts in the mixture. Physico- chemical characteristics of the received products were studied. Influence of synthesized salts on kinetics of steel corrosion in 1 % NaCl solution saturated with CO2 . The quantity of the applied inhibitor was 50 mg/l. Potassium nitronate on the propylene trimmer basis stimulates corrosion. Potassium nitronate on C8 olefine and propylene tetramer basis protects from corrosion, correspondingly 46 % and 25 %. C12 , C14 and C16-18 potassium nitronates showed the following protective efficiency from corrosion. 1. Potassium nitronate (C12) 98,52 %. 2. Potassium nitronate (C14) 97,78 %. 3. Potassium nitronate (C16-18) 99,74 %. In the application of potassium nitranate on trimmer propylene corrosion speed increases for 1,10 times than in the environment without inhibitors. And adding C16-18 olefines based on potassium nitronate corrosion speed reduced 388 times.
