Mannich base quaternary ammonium salt compound as well as preparation method and application thereof

A technology of quaternary ammonium salt compound and Mannich base, which is applied in the field of Mannich base quaternary ammonium salt compound and its preparation, can solve the problems of complex screening process and difficult to achieve optimal effect of compounding ratio, and achieve good water solubility , Reliable reaction principle, easy to promote the effect

Inactive Publication Date: 2018-08-10
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the disadvantage of the above method is that there are many types of corrosion inhibitors and fungicides, the screening process is complicated, and the compounding ratio is difficult to achieve the optimal effect.

Method used

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  • Mannich base quaternary ammonium salt compound as well as preparation method and application thereof
  • Mannich base quaternary ammonium salt compound as well as preparation method and application thereof
  • Mannich base quaternary ammonium salt compound as well as preparation method and application thereof

Examples

Experimental program
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Embodiment Construction

[0020] The preparation embodiment of embodiment 1 bactericidal corrosion inhibitor

[0021] Step 1, the cyclohexanone (C 6 h 10 O, the relative molecular mass is 98) and the mass fraction of 96.90ml is 50% hydrazine hydrate (relative density is 1.032g / mL at 20 ℃, N 2 h 4 ·H 2 O, relative molecular mass is 50) joins in the 95% ethanol (density is 0.78g / mL) of 7ml (the mol ratio of cyclohexanone and hydrazine hydrate is 0.9:1.0),

[0022] Promptly control the total amount of solvent to be below 35% (in mass fraction) of the total amount of raw materials (the total amount of cyclohexanone and hydrazine hydrate solute), add 0.9mol of glutaraldehyde while stirring, and adjust the pH value of the system with hydrochloric acid at 4 In the range of ~5, control the reaction time in the range of 2~2.5h, and control the reaction temperature at 35±1℃;

[0023] Step 2. After the reaction is completed, add 0.8 mol of benzyl chloride, raise the temperature to 40±1°C, adjust the pH value...

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Abstract

The invention provides a Mannich base quaternary ammonium salt compound; the invention also provides a preparation method of the Mannich base quaternary ammonium salt compound; and the invention alsoprovides an application of the Mannich base quaternary ammonium salt compound in corrosion and sterilization of steel pipelines in oil exploitation. The Mannich base quaternary ammonium salt compoundprovided by the invention can reduce inconvenience of compounding of a plurality of corrosion inhibitors and bactericides, has excellent corrosion inhibition performance and certain bactericidal ability when being used as a bactericidal corrosion inhibitor; and the compound has a simple synthetic method, mild reaction conditions, low costs and wide sources of raw materials, and can reduce costs toa certain extent.

Description

technical field [0001] The invention relates to the field of metal corrosion and protection, in particular to a Mannich base quaternary ammonium salt compound and its preparation method and application. Background technique [0002] With the continuous exploitation of oil fields, the water content continues to rise, and the problems of bacterial growth and corrosion have become increasingly prominent, causing huge economic losses every year. The crude oil produced in the oilfield operation environment will still contain oilfield water with salts (sodium chloride, magnesium chloride, calcium chloride and sulfate) after dehydration treatment. The existence of these chlorides makes a large amount of Cl- exist in the medium, which is harmful to Petroleum equipment poses a great threat; there are also various microbial groups in the oilfield production system, which cause huge losses to oilfield equipment and pipeline corrosion, and the most common bacteria are sulfate-reducing b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C221/00C07C225/12A01N35/06A01P1/00C09K8/54C23F11/14
CPCA01N35/06C07C225/12C07C2601/14C09K8/54C09K2208/32C23F11/143
Inventor 李克华唐甜甜王任芳邹华苏铁军
Owner YANGTZE UNIVERSITY
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