SYNTHESIS OF THE NEW TYPE OF BACTERICIDE-INHIBITOR FOR PROTECTION OF INTERNAL SURFACE OF GAS PIPELINES AND EXAMINATION OF THEIR PROTECTIVE EFFICIENCY
The chemical composition and physical-chemical properties of gas and water-condensate mixture taken from gas pipelines have been analyzed, and the amount of hydrogen-sulphide, aggressive ions, and different type of bacterium (hydrocarbon oxidizing, sulphate-reducing and iron) examined. It revealed that in the absence of inhibitor the medium corrosion rate as against hydrogen-sulphide is 1,352 g/m h. The new type of bactericide-inhibitor for protection of internal corrosion of gas pipelines has been synthesized by interaction of condensation products of naphthenic acids and oils. Also, aliphatic amines with copper salts and their protection efficiency have been identified in terms of different concentration of inhibitor. It found that the optimum concentration of inhibitor-bactericide was 100 mg/l. Note that in this concentration the inhibitor shows 98, 4% of protective efficiency. The optimum concentration of inhibitor leads to the decrease of corrosion rate by 64, 4 times. The bactericide properties of the new type of bactericide-inhibitor have also been analyzed to establish that synthesized inhibitor shows ~99% of protective efficiency against bacterium to protect against internal corrosion of pipelines.