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Carbon dioxide corrosion inhibitor based on expired medical drugs and its preparation method and application

A carbon dioxide and corrosion inhibitor technology, applied in the field of expired medical drug recycling and disposal, can solve the problems of resource waste, pitting corrosion, electrochemical corrosion of carbon steel pipelines and conveying pipelines, etc., to avoid harm and waste.

Active Publication Date: 2018-06-29
武汉楚博士科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Carbon dioxide corrosion is a common problem in the process of oil and gas field exploitation. After the oilfield formation water is saturated with carbon dioxide, it will cause serious electrochemical corrosion to carbon steel pipelines and pipelines, and pitting corrosion is prone to occur in local areas, resulting in perforation accidents.
According to statistics, there are about 15,000 tons of expired medicines in the country every year. These expired medicines cannot be treated as general domestic waste, and most of them can only be destroyed by high-temperature incineration, which not only causes waste of resources, pollutes the environment, but also requires expensive treatment. cost
[0004] At present, there are very few reports on the effective secondary utilization of expired medical drugs. Therefore, research on a method for secondary reuse of expired medical drugs can not only realize resource recycling, but also effectively solve the problem of disposal of these hazardous wastes.

Method used

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  • Carbon dioxide corrosion inhibitor based on expired medical drugs and its preparation method and application
  • Carbon dioxide corrosion inhibitor based on expired medical drugs and its preparation method and application
  • Carbon dioxide corrosion inhibitor based on expired medical drugs and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Mix 30g of N,N-dimethylformamide, 30g of absolute ethanol and 20g of water, then heat up to 50-60°C, control the temperature, add 8g of expired propylthiouracil tablets while stirring in the mixed solution, fully After dissolving, add 8g of expired anethiol tablets, continue to stir until fully dissolved, then add 4g of OP-10 to the formed solution, stir until uniform, and obtain the finished carbon dioxide corrosion inhibitor. According to the industry standard SY / T 5273-2000, the formation water of Changqing Oilfield was used, and the corrosion inhibition performance was evaluated by the weight loss method of the coupons, and compared with the performance of the commercially available oleic acid-based imidazoline carbon dioxide corrosion inhibitor, see Table 1.

[0022] Table I

[0023]

[0024]

[0025] As can be seen from the test data in Table 1, under the same conditions, the corrosion inhibitor of the present invention is better than the commercially availa...

Embodiment 2

[0027] Mix 25g of formamide, 30g of isopropanol and 15g of water, then raise the temperature to 50-60°C, control the temperature, add 10g of expired propylthiouracil tablets into the mixed solution while stirring, fully dissolve and then add 15g of expired fennel Sulfur flakes, continue to stir until fully dissolved, then add 5g OP-10 into the formed solution, stir until uniform, and get the finished carbon dioxide corrosion inhibitor. According to the industry standard SY / T 5273-2000, the formation water of Jilin Oilfield was used, and the corrosion inhibition performance was evaluated by the weight loss method of the coupons, and compared with the performance of the commercially available thiourea-based imidazoline carbon dioxide corrosion inhibitor, see Table 2.

[0028] Table II

[0029]

[0030] As can be seen from the test data in Table 2, under the same conditions, the corrosion inhibitor of the present invention is better than the commercially available thiourea-bas...

Embodiment 3

[0032] Mix 25g of dimethyl sulfoxide, 30g of methanol and 15g of water, then raise the temperature to 50-60°C, control the temperature, add 11g of expired propylthiouracil tablets into the mixed solution while stirring, and add 16g of expired fennel after fully dissolving. Continue stirring until the trisulfide tablets are fully dissolved, then add 3g of Pingpingjia O25 into the formed solution, and stir until uniform to obtain the finished carbon dioxide corrosion inhibitor. In accordance with the industry standard SY / T 5273-2000, using the formation water of Qinghe Oil Production Plant of Jianghan Oilfield, the corrosion inhibition performance was evaluated by the weight loss method of the coupons, and compared with the performance of the commercially available alkyneoxymethylamine corrosion inhibitor, see Table 3 .

[0033] Table three

[0034]

[0035] As can be seen from the test data in Table 3, under the same conditions, the corrosion inhibitor of the present invent...

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PUM

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Abstract

The invention discloses a carbon dioxide corrosion inhibitor based on expired medical drugs and its preparation method and application, wherein the carbon dioxide corrosion inhibitor comprises: 5% to 12% of expired propylthiouracil, 8% to 20% Anetellithion, 1% to 5% surfactant, 20‑40% polar organic solvent, 20‑40% short chain alcohol. The present invention improves the key components constituting the carbon dioxide corrosion inhibitor and their sources and proportions, especially adopts two types of expired medical drugs, propylthiouracil and expired anetthio, and controls the distribution of these two types of expired drugs in the The mass percentage in the carbon dioxide corrosion inhibitor, and the overall cooperation between them and other components of the carbon dioxide corrosion inhibitor, makes the corresponding corrosion inhibitor have a good carbon dioxide corrosion inhibition effect, and also provides a guarantee for the disposal of expired medical drugs An optional new path.

Description

technical field [0001] The invention belongs to the technical field of recycling and disposal of expired medical drugs, and more specifically relates to a carbon dioxide corrosion inhibitor based on expired medical drugs and its preparation method and application. The carbon dioxide corrosion inhibitor prepared by using expired medical drugs can be effectively used in anti- In the field of carbon dioxide corrosion, it also provides new ways and ideas for the secondary utilization of expired medical drugs. Background technique [0002] Carbon dioxide corrosion is a common problem in the process of oil and gas field exploitation. After the oilfield formation water is saturated with carbon dioxide, it will cause serious electrochemical corrosion to carbon steel pipelines and pipelines, and pitting corrosion is prone to occur in local areas, resulting in perforation accidents. Adding corrosion inhibitors to inhibit carbon dioxide corrosion is currently the most used method, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/16
Inventor 陈振宇岑宏宇邱于兵方璐张佑庭
Owner 武汉楚博士科技股份有限公司
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