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Degreasing cleaning method for inner wall of high-pressure oxygen pipeline

An oxygen pipeline, degreasing cleaning technology, applied in cleaning methods and utensils, cleaning methods using liquids, chemical instruments and methods, etc., can solve problems such as inability to effectively remove grease, simple cleaning steps, etc. The effect of blocking, improving the effect

Pending Publication Date: 2020-12-18
陈广萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a degreasing and cleaning method for the inner wall of a high-pressure oxygen pipeline, which solves the problem that the existing cleaning steps are simple and cannot effectively remove grease

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An embodiment of the present invention provides a method for degreasing and cleaning the inner wall of a high-pressure oxygen pipeline, comprising the following steps:

[0031] S1 flush

[0032] Connecting the high-pressure oxygen pipeline to the cleaning equipment, it can be said that the high-pressure oxygen pipeline pumps the cleaning liquid. At the same time, the cleaning equipment has the function of gas explosion cleaning. The cleaning liquid includes water and sand. During the cleaning process, the water and sand in the high-pressure oxygen pipeline The flow ratio is 9:1, and air is introduced during the cleaning process. The maximum pressure of the air explosion does not exceed 50% of the pressure of the high-pressure oxygen pipeline. The time interval of the air explosion is 0.1s, and the cleaning time lasts for 5 minutes. Rinse 2 to 3 times, and use sand and water to mix and wash, which can remove most of the grease on the inner wall of the high-pressure oxyge...

Embodiment 2

[0045] An embodiment of the present invention provides a method for degreasing and cleaning the inner wall of a high-pressure oxygen pipeline, comprising the following steps:

[0046] S1 flush

[0047] Connecting the high-pressure oxygen pipeline to the cleaning equipment, it can be said that the high-pressure oxygen pipeline pumps the cleaning liquid. At the same time, the cleaning equipment has the function of gas explosion cleaning. The cleaning liquid includes water and sand. During the cleaning process, the water and sand in the high-pressure oxygen pipeline The flow ratio is 9:1, and air is introduced during the cleaning process. The maximum pressure of the air explosion does not exceed 50% of the pressure of the high-pressure oxygen pipeline. The time interval of the air explosion is 0.3s, and the cleaning time lasts for 8 minutes. Rinse 2 to 3 times, and use sand and water to mix and wash, which can remove most of the grease on the inner wall of the high-pressure oxyge...

Embodiment 3

[0060] An embodiment of the present invention provides a method for degreasing and cleaning the inner wall of a high-pressure oxygen pipeline, comprising the following steps:

[0061] S1 flush

[0062] Connecting the high-pressure oxygen pipeline to the cleaning equipment, it can be said that the high-pressure oxygen pipeline pumps the cleaning liquid. At the same time, the cleaning equipment has the function of gas explosion cleaning. The cleaning liquid includes water and sand. During the cleaning process, the water and sand in the high-pressure oxygen pipeline The flow ratio is 9:1, and air is introduced during the cleaning process. The maximum pressure of the gas explosion does not exceed 50% of the pressure of the high-pressure oxygen pipeline. The time interval of the gas explosion is 0.5s, and the cleaning time lasts for 10 minutes. Rinse 2 to 3 times, and use sand and water to mix and wash, which can remove most of the grease on the inner wall of the high-pressure oxyg...

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Abstract

The invention provides a degreasing cleaning method for an inner wall of a high-pressure oxygen pipeline, and relates to the field of degreasing cleaning of pipelines. The degreasing cleaning method for the inner wall of the high-pressure oxygen pipeline comprises the steps: flushing, grease dissolution, acid washing, enzyme washing, detection and drying. By using a mixed flushing way of sand andwater, a large amount of oil grease attached with the inner wall of the high-pressure oxygen pipeline can be removed; and meanwhile, by using a gas explosion way, the effect of cleaning the sand can be improved, and blockage of the high-pressure oxygen pipeline caused by combination of the dropped oil grease and the sand during cleaning is also prevented; and meanwhile, in an impacting process ofthe sand, the inner wall of the high-pressure oxygen pipeline can be ground, impurities such as iron rust and welding slag can be removed, and acid liquid required by passivation is reduced.

Description

technical field [0001] The invention relates to the field of pipeline degreasing and cleaning, in particular to a method for degreasing and cleaning the inner wall of a high-pressure oxygen pipeline. Background technique [0002] With the increasing level of industrialization in our country and the vigorous development of petrochemical, natural gas, medical equipment, instrumentation, aviation, aerospace and other industry projects, the requirements for stainless steel pipe technology are also getting higher and higher. For example, the cleanliness of the pipeline, some users require that there should be no free rust, large particles of dust, welding slag, grease and other impurities inside. Among them, the cleanliness requirements of the oxygen pipeline are quite stringent. Most of the oxygen pipelines transport oxygen with a purity greater than 99.99%. The pressure is high and the flow rate is fast. If the internal cleanliness of the pipeline cannot be guaranteed, a small...

Claims

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Application Information

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IPC IPC(8): B08B9/032B08B3/08B08B13/00C23G3/04
CPCB08B9/0328B08B3/08B08B9/0321B08B13/00C23G3/04
Inventor 陈广萍
Owner 陈广萍
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