Anti-carbon dioxide corrosion inhibitor and preparation method thereof

A carbon dioxide and corrosion inhibitor technology, applied in the field of oilfield sewage treatment reagents, can solve the problems of equipment maintenance, equipment maintenance costs increase, oilfield sewage treatment shutdown and shutdown, and equipment service life reduction, etc., to save pharmaceutical costs and low production costs. , the effect of controlling corrosion

Inactive Publication Date: 2015-05-20
XIAN HUANUO ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Weak acid corrosion caused by the presence of carbon dioxide in the process of oilfield sewage treatment is widespread, resulting in serious loss of equipment in the oilfield water treatment process, resulting in a serious reduction in the service life of the equipment, and the shutdown of production and operation caused by oilfield sewage treatme

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A carbon dioxide corrosion inhibitor, consisting of the following components in mass percentage: 75% of clear water, 6% of dodecyl dimethyl benzyl ammonium chloride, 9% of imidazoline, 5% of alkynyloxymethylamine, dodecyl dimethyl benzyl ammonium chloride Alkyltrimethylammonium chloride 6%.

[0020] A preparation method of carbon dioxide corrosion inhibitor, comprising the steps of:

[0021] Step 1, each component is weighed by mass, and placed separately for subsequent use;

[0022] Step 2, add 70% of the mass fraction of clean water into the mixer, start stirring, the stirring speed is 130R / min, and stir for 5min;

[0023] Step 3, add dodecyl dimethyl benzyl ammonium chloride into the mixer, start stirring at a stirring speed of 130 R / min, and stir for 15 minutes;

[0024] Step 4, add dodecyltrimethylammonium chloride into the mixer, start stirring, the stirring speed is 130R / min, and stir for 15min;

[0025] Step 5, add imidazoline into the mixer, start stirring, ...

Embodiment 2

[0028] A carbon dioxide corrosion inhibitor, consisting of the following components in mass percentage: 75% of clear water, 5% of dodecyl dimethyl benzyl ammonium chloride, 10% of imidazoline, 5% of alkynyloxymethylamine, dodecyl Alkyltrimethylammonium chloride 5%.

[0029] A preparation method of carbon dioxide corrosion inhibitor, comprising the steps of:

[0030] Step 1, each component is weighed by mass, and placed separately for subsequent use;

[0031] Step 2, add 75% of the mass fraction of clean water into the mixer, start stirring, the stirring speed is 150R / min, and stir for 5min;

[0032] Step 3, add dodecyl dimethyl benzyl ammonium chloride into the mixer, start stirring at a stirring speed of 150 R / min, and stir for 18 minutes;

[0033] Step 4, add dodecyltrimethylammonium chloride into the mixer, start stirring, the stirring speed is 150R / min, and stir for 18min;

[0034] Step 5, add imidazoline into the mixer, start stirring, the stirring speed is 150R / min, a...

Embodiment 3

[0037] A carbon dioxide corrosion inhibitor, consisting of the following components in mass percentage: 72% of clear water, 5% of dodecyl dimethyl benzyl ammonium chloride, 11% of imidazoline, 6% of alkynyloxymethylamine, dodecyl Alkyltrimethylammonium chloride 6%.

[0038] A preparation method of carbon dioxide corrosion inhibitor, comprising the steps of:

[0039] Step 1, each component is weighed by mass, and placed separately for subsequent use;

[0040] Step 2, add 80% of the mass fraction of clean water into the mixer, start stirring, the stirring speed is 100R / min, and stir for 3 minutes;

[0041] Step 3, add dodecyl dimethyl benzyl ammonium chloride into the mixer, start stirring at a stirring speed of 100 R / min, and stir for 12 minutes;

[0042] Step 4, add dodecyltrimethylammonium chloride into the mixer, start stirring, the stirring speed is 100R / min, and stir for 12min;

[0043] Step 5, add imidazoline into the mixer, start stirring, the stirring speed is 100R / m...

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PUM

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Abstract

The invention discloses a carbon dioxide corrosion inhibitor which consists of the following components in percentage by mass: 70-80% of clear water, 4-6% of dodecyl dimethyl benzyl ammonium chloride, 8-12% of imidazoline, 4-6% of alkyne-oxy methylamine and 4-6% of dodecyl trimethyl ammonium chloride. The preparation comprises the following steps: weighing the components according to the mass proportion and placing separately for later use; adding 70-80% of the clear water by mass into a mixer and starting stirring for 3-5min; adding the dodecyl dimethyl benzyl ammonium chloride into the mixer and starting stirring for 12-18min; adding the dodecyl trimethyl ammonium chloride into the mixer and starting stirring for 12-18min; adding the imidazoline into the mixer and starting stirring for 12-18min; and adding the alkyne-oxy methylamine into the mixer and the rest clear water, and starting stirring for at least 20min until the drug is uniformly mixed before stopping the stirring. The carbon dioxide corrosion inhibitor disclosed by the invention realizes a good corrosion inhibition effect on the sewage with high content of carbon dioxide in an oilfield, can effectively control the corrosion of sewage at low concentration and effectively saves the drug cost as well as the repair and maintenance cost of the oilfield water treatment equipment; and moreover, the preparation method is simple and fast, the production cost is low and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of oilfield sewage treatment reagents, in particular to an anti-carbon dioxide corrosion inhibitor suitable for corrosion inhibition of oilfield sewage with high carbon dioxide content and a preparation method thereof. Background technique [0002] Weak acid corrosion caused by the presence of carbon dioxide in the process of oilfield sewage treatment is widespread, resulting in serious loss of equipment in the oilfield water treatment process, resulting in a serious reduction in the service life of the equipment, and the shutdown of production and operation caused by oilfield sewage treatment. Equipment maintenance, equipment Maintenance costs increase year by year. However, there is currently no carbon dioxide corrosion inhibitor with good effect on the market, which can be applied to the corrosion inhibition of sewage with high carbon dioxide content in oil fields, and can effectively control the corrosio...

Claims

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Application Information

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IPC IPC(8): C23F11/04
Inventor 张峰
Owner XIAN HUANUO ENVIRONMENTAL PROTECTION CO LTD
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