Nitrogenous heterocyclic quaternary ammonium salt acidizing corrosion inhibitor and preparation method thereof
A technology of acidifying corrosion inhibitor and quaternary ammonium salt, which is applied in the field of metal anti-corrosion, can solve the problems of insufficient stability of dissolution and dispersion, high corrosion speed of oil pipe steel, and large addition of corrosion inhibitor, so as to be suitable for large-scale industrial production and application, low corrosion rate, and less harsh synthesis conditions
Inactive Publication Date: 2012-09-19
南京华洲新材料有限公司
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The invention discloses a nitrogenous heterocyclic quaternary ammonium salt acidizing corrosion inhibitor and a preparation method thereof. The nitrogenous heterocyclic quaternary ammonium salt acidizing corrosion inhibitor comprises the following components in percentage by weight: component 1, propargyl alcohol, formaldehyde, urotropine, potassium iodide, antimonous oxide, antimony butter, surfactant and solvent in the ratio of (1-50) : (0-25) : (1-25) : (0-10) :(0-10) : (0-20) : (6-25) : (15-70), wherein the component 1 is selected from one or more of chlorinated N-benzyl-R-pyridine quaternary ammonium salt or chlorinated N-benzyl-R-quinoline quaternary ammonium salt. The nitrogenous heterocyclic quaternary ammonium salt acidizing corrosion inhibitor has the advantages of small addition amount, low cost, stable and uniform dispersion in acidic liquid, low corrosion speed, capability of resisting high temperature of over 160 DEG C and excellent performance. 0.5-2.5 percent of nitrogenous heterocyclic quaternary ammonium salt acidizing corrosion inhibitor disclosed by the invention is added into the acidic liquid, so that the corrosion speed is far lower than national primary standard.
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