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Bio-enzyme corrosion inhibitor for circulating water system and application method thereof

A technology of circulating water system and corrosion inhibitor, which is applied in the field of environmental engineering, can solve the problems of excessive sewage discharge and downstream sewage treatment costs, increased fresh water consumption, and low water quality concentration ratio, so as to increase the corrosion inhibition effect and prevent corrosion. , easy to use effect

Inactive Publication Date: 2013-04-24
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment method often carries out a large amount of drainage and water replacement, resulting in low water concentration multiples, increased fresh water c

Method used

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  • Bio-enzyme corrosion inhibitor for circulating water system and application method thereof
  • Bio-enzyme corrosion inhibitor for circulating water system and application method thereof
  • Bio-enzyme corrosion inhibitor for circulating water system and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A biological enzyme corrosion inhibitor for slowing down the corrosion of carbon steel in a circulating water system consists of 1 part of lipase and 1.5 parts of lysozyme in terms of weight fraction. The activity of the lipase is >40000u / g; the activity of the lysozyme is >10000u / g.

[0023] A method for slowing down carbon steel corrosion in a circulating water system by using a biological enzyme corrosion inhibitor, comprising the following steps:

[0024] ① Weigh an appropriate amount of lipase and lysozyme and mix them evenly to obtain a biological enzyme corrosion inhibitor; the mass ratio of lipase and lysozyme in the biological enzyme corrosion inhibitor is 1:1.5;

[0025] ② dissolving the prepared biological enzyme corrosion inhibitor in water to obtain an aqueous solution of the biological enzyme corrosion inhibitor;

[0026] ③The experimental water was taken from the circulating water system of a refining and chemical enterprise in Qingdao. The concentration...

Embodiment 2

[0046] A biological enzyme corrosion inhibitor for slowing down the corrosion of carbon steel in a circulating water system consists of 1 part of lipase and 2 parts of lysozyme in terms of weight fraction. The activity of the lipase is >40000u / g; the activity of the lysozyme is >10000u / g.

[0047] A method for slowing down carbon steel corrosion in a circulating water system by using a biological enzyme corrosion inhibitor, comprising the following steps:

[0048] ① Weigh an appropriate amount of lipase and lysozyme and mix them evenly to obtain a biological enzyme corrosion inhibitor; the mass ratio of lipase and lysozyme in the biological enzyme corrosion inhibitor is 1:2;

[0049] ② dissolving the prepared biological enzyme corrosion inhibitor in water to obtain an aqueous solution of the biological enzyme corrosion inhibitor;

[0050] ③The experimental water was taken from the circulating water system of a refining and chemical enterprise in Qingdao. The concentration of ...

Embodiment 3

[0054] A biological enzyme corrosion inhibitor for slowing down the corrosion of carbon steel in a circulating water system consists of 1 part of lipase and 2.5 parts of lysozyme in terms of weight fraction. The activity of the lipase is >40000u / g; the activity of the lysozyme is >10000u / g.

[0055] A method for slowing down carbon steel corrosion in a circulating water system by using a biological enzyme corrosion inhibitor, comprising the following steps:

[0056] 1. Weigh an appropriate amount of lipase and lysozyme, and mix them uniformly to obtain a biological enzyme corrosion inhibitor; the mass ratio of lipase and lysozyme in the biological enzyme corrosion inhibitor is 1:2.5;

[0057] ② dissolving the prepared biological enzyme corrosion inhibitor in water to obtain an aqueous solution of the biological enzyme corrosion inhibitor;

[0058] ③The experimental water was taken from the circulating water system of a refining and chemical enterprise in Qingdao. The concentr...

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Abstract

The invention relates to a bio-enzyme corrosion inhibitor for slowing down the carbon steel corrosion in a circulating water system. The bio-enzyme corrosion inhibitor is prepared from the following ingredients by weight portion: 1 portion of lipase and 1.5-2.5 portions of muramidase. The activity of the lipase is larger than 40000u/g, and the activity of the muramidase is larger than 10000u/g. The invention also discloses a method for slowing down the carbon steel corrosion in the circulating water system with the bio-enzyme corrosion inhibitor. The bio-enzyme corrosion inhibitor is formed by compounding the lipase and the muramidase according to a certain mass ratio and has the advantages of less dosage, convenience in use, wide sources, no toxicity, no pollution, good biodegradability and the like. The bio-enzyme corrosion inhibitor can generate a black dense matterl, namely ferroferric oxide on a carbon steel surface to prevent oil leaked from circulating water from further corroding carbon steel equipment. Meanwhile, the lipase in the bio-enzyme corrosion inhibitor can play a role of degrading diesel fuel, and therefore the corrosion inhibition effect is further increased.

Description

technical field [0001] The invention belongs to the field of environmental engineering, and relates to a corrosion inhibitor that helps to slow down the corrosion of carbon steel, in particular to an environmentally friendly biological enzyme corrosion inhibitor that is good for slowing down the corrosion of carbon steel in the case of medium leakage; the invention also The invention relates to a method for slowing down carbon steel corrosion by using a biological enzyme corrosion inhibitor. Background technique [0002] At present, oil refineries usually use various types of crude oil as raw materials, and use physical separation and chemical reaction methods to obtain various basic chemical raw materials such as gasoline and diesel. With the development of science and technology, the production scale of oil refining enterprises is getting larger and larger, and the refining equipment is becoming more and more complex. But the circulating water cooling system has always be...

Claims

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Application Information

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IPC IPC(8): C23F11/10
Inventor 刘芳赵朝成卢宪辉王永强仲慧赟陆津津杨伟刘春爽
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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