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Composite scale and rust cleaning agent

A cleaning agent and composite technology, applied in the field of chemical cleaning agents, can solve the problems of high cost, corrosion and damage to equipment, and low cost, and achieve the effects of simple preparation process, improved heat exchange efficiency, convenient and safe use

Active Publication Date: 2011-11-23
淄博福世蓝高分子复合材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic acid cleaning, such as hydrochloric acid, has low cost and good effect, but it is volatile, and improper use will corrode and damage the equipment, and it is easy to rust again after cleaning; organic acid cleaning, such as sulfamic acid, citric acid, and oxalic acid, are non-volatile and safe to use. , but high-temperature cleaning is required, the cost is high, and the descaling ability is poor; physical cleaning is difficult for equipment with complex structures and insoluble hard scales, and may cause local damage

Method used

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  • Composite scale and rust cleaning agent
  • Composite scale and rust cleaning agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Prepare compound scale and rust cleaner according to the following formula:

[0015] component name

weight percentage (%)

Mass concentration 36.67% hydrochloric acid

7

Mass concentration 70% glycolic acid

1.5

Commercially available Ningjin Kaizer Chemical Company naphthenic acid imidazoline corrosion inhibitor

0.3

500PPM nonylphenol ethoxylates

0.05

water

91.15

[0016] The quality index of this compound scale rust cleaning agent is as follows:

[0017] project

Quality Index

Exterior

light brown transparent liquid

Solution pH value

1

Density (g / ml)

1.035±0.005

Dissolved scale g(CaCO 3 ) / Kg

110

Corrosion rate to A3 carbon steel (35℃±1℃)

0.250g / (m 2 h)

Corrosion rate to copper (35℃±1℃)

0.230g / (m 2 h)

Corrosion rate to 304 stainless steel (35℃±1℃)

0.200g / (m 2 h)

[0018] The e...

Embodiment 2

[0021] Prepare compound scale and rust cleaner according to the following formula:

[0022] component name

weight percentage (%)

Mass concentration 37.2% hydrochloric acid

8

Mass concentration 99% glycolic acid

1.5

Commercially available Ningjin Kaizer Chemical Company naphthenic acid imidazoline corrosion inhibitor

0.3

700PPM nonylphenol ethoxylates

0.05

water

90.15

[0023] The quality index of this compound scale rust cleaning agent is as follows:

[0024] project

Quality Index

Exterior

light brown transparent liquid

Solution pH value

1

Density (g / ml)

1.040±0.005

Dissolved scale g(CaCO 3 ) / Kg

120

Corrosion rate to A3 carbon steel (35℃±1℃)

0.270g / (m 2 h)

Corrosion rate to copper (35℃±1℃)

0.246g / (m 2 h)

Corrosion rate to 304 stainless steel (35℃±1℃)

0.218g / (m 2 h)

[0025] The ex...

Embodiment 3

[0028] Prepare compound scale and rust cleaner according to the following formula:

[0029] component name

[0030] The compound scale rust cleaning agent quality index is as follows:

[0031] project

[0032] For the comparative experiment of this embodiment, refer to Comparative Example 1.

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Abstract

The invention relates to a chemical cleaning agent, in particular to a composite scale and rust cleaning agent, which comprises a corrosion inhibitor, a water-based surfactant and water. The composite scale and rust cleaning agent is characterized by being prepared from the following raw materials in percentage by mass: 0.3 to 1 percent of corrosion inhibitor, 0.05 to 0.1 percent of water-based surfactant, 80 to 94 percent of water, 5 to 15 percent of inorganic acid and 1 to 5 percent of glycollic acid. The inorganic acid is combined with the glycollic acid in a certain ratio, so that the composite scale and rust cleaning agent can effectively integrate advantages of various pickling cleaning agents, ensures descaling efficiency and can be prevented from corroding pipelines and equipment.

Description

technical field [0001] The invention relates to a chemical cleaning agent, in particular to a compound scale and rust cleaning agent. Background technique [0002] As long as there is water circulation, there will be mineral scale. These mineral scale deposits accumulate very quickly, often within three weeks. Even a thin layer will play an insulating role and even cause the installation system Production efficiency drops, energy consumption and material consumption increase. According to relevant information, if scale with a thickness of 0.2mm is attached, the energy consumption will increase by about 15%, and the efficiency will also be greatly reduced. Events, these problems have been very prominent in various fields such as industry, commerce, civilian use, and military use. [0003] With the development of industrial modernization, industrial equipment is gradually developing towards automation, continuity and clustering. In order to improve efficiency, reduce costs a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/04
Inventor 于成海王东志胡薇杨振华
Owner 淄博福世蓝高分子复合材料技术有限公司
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