Aluminum alloy scale chemical cleaning agent and preparation method thereof

An alumina and cleaning agent technology, applied in the field of chemical cleaning agents, can solve the problems of complicated operation, low scale removal rate, safe heating energy consumption, etc., and achieve the effects of no environmental pollution, good scale dissolution effect, and complete scale cleaning.

Inactive Publication Date: 2016-06-29
SUZHOU BEC BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the aluminum oxide removal methods used in industry generally have problems such as slow dissolution speed, low scale removal rate, cumbersome operation, heating energy consumption and hidden safety hazards. Due to the universality of alumina scale, research on efficient and environmentally friendly alumina chemical cleaning agent has very important practical significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A chemical cleaning agent for aluminum oxide scale, comprising the following components in parts by weight: 20 parts of concentrated hydrochloric acid with a mass fraction of 37%, 0.5 parts of sodium methyl laurate sulfonate, 5 parts of urotropine, 1 part of thiourea, 2 parts of benzotriazole, 5 parts of absolute ethanol, 70 parts of water.

[0019] The preparation method of described aluminum oxide scale chemical cleaning agent, comprises the steps:

[0020] (1) Mix and stir concentrated hydrochloric acid, urotropine, 2 parts of thiourea, benzotriazole and absolute ethanol with a mass fraction of 37% in parts by weight;

[0021] (2) Add sodium methyl laurate sulfonate to water in parts by weight, stir and mix evenly;

[0022] (3) Add the mixture of step (1) to the mixture of step (2), heat to 40°C, and stir for 25 minutes to obtain the chemical cleaning agent for alumina scale.

[0023] The scale-dissolving ability of the prepared alumina scale chemical cleaning agen...

Embodiment 2

[0025] A chemical cleaning agent for aluminum oxide scale, comprising the following components in parts by weight: 40 parts of concentrated hydrochloric acid with a mass fraction of 37%, 5 parts of sodium methyl laurate sulfonate, 14 parts of urotropine, 3 parts of thiourea, 6 parts of benzotriazole, 15 parts of absolute ethanol, and 90 parts of water.

[0026] The preparation method of described aluminum oxide scale chemical cleaning agent, comprises the steps:

[0027] (1) Mix and stir concentrated hydrochloric acid, urotropine, thiourea, benzotriazole, and absolute ethanol with a mass fraction of 37% in parts by weight;

[0028] (2) Add sodium methyl laurate sulfonate to water in parts by weight, stir and mix evenly;

[0029] (3) Add the mixture of step (1) to the mixture of step (2), heat to 60°C, and stir for 50 minutes to obtain the chemical cleaning agent for alumina scale.

[0030] The scale-dissolving ability of the prepared alumina scale chemical cleaning agent was...

Embodiment 3

[0032] A chemical cleaning agent for aluminum oxide scale, comprising the following components in parts by weight: 25 parts of concentrated hydrochloric acid with a mass fraction of 37%, 2 parts of sodium methyl laurate sulfonate, 8 parts of urotropine, 1.5 parts of thiourea, 2.5 parts of benzotriazole, 7 parts of absolute ethanol, and 75 parts of water.

[0033] The preparation method of described aluminum oxide scale chemical cleaning agent, comprises the steps:

[0034] (1) Mix and stir concentrated hydrochloric acid, urotropine, thiourea, benzotriazole, and absolute ethanol with a mass fraction of 37% in parts by weight;

[0035] (2) Add sodium methyl laurate sulfonate to water in parts by weight, stir and mix evenly;

[0036] (3) Add the mixture of step (1) to the mixture of step (2), heat to 50°C, and stir for 40 minutes to obtain a chemical cleaning agent for alumina scale.

[0037] The scale-dissolving ability of the prepared alumina scale chemical cleaning agent was...

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PUM

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Abstract

The invention discloses an aluminum alloy scale chemical cleaning agent and a preparation method thereof. The aluminum alloy scale chemical cleaning agent comprises, by weight, 20-40 parts of concentrated hydrochloric acid with the mass fraction of 37%, 0.5-5 parts of lauric acid methyl ester sulfonate, 5-14 parts of methenamine, 1-3 parts of thiourea, 2-6 parts of benzotriazole, 5-15 parts of absolute ethyl alcohol and 70-90 parts of water. The components are mixed, heated and stirred to prepare the aluminum alloy scale chemical cleaning agent. The dissolving capacity for aluminum alloy scales reaches 81.6-113.5 g/Kg, the scale dissolving effect is good, the scales are cleaned up thoroughly, efficiently and safely, the hydrogen embrittlement phenomenon is not generated, the scales can be directly drained, and the environment is not polluted.

Description

technical field [0001] The invention relates to the field of chemical cleaning agents, in particular to an aluminum oxide scale chemical cleaning agent and a preparation method thereof. Background technique [0002] With the rapid development of my country's electrolytic aluminum, ceramics, medicine, electronics, machinery and other industries, there is still a large room for growth in the market demand for alumina, and the output of alumina is constantly increasing. During the alumina production process, the produced alumina will form alumina scale on the production pipeline and equipment, resulting in problems such as equipment efficiency decline and pipeline blockage. [0003] In order to reduce the damage of alumina scale to pipelines and equipment, maintain work efficiency and save energy and reduce consumption, it is necessary to have efficient removal measures for different scales in various situations. Currently, the commonly used removal methods include mechanical a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/06
CPCC23G1/063
Inventor 李苏扬李文遐徐勤霞
Owner SUZHOU BEC BIOLOGICAL TECH
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