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Pollution-free, high-efficiency and long-distance pipe installing and cleaning method

A pipeline installation and long-distance technology, applied in cleaning methods and appliances, chemical instruments and methods, cleaning hollow objects, etc., can solve problems such as inability to adapt to long-distance flammable and explosive gas pipelines, and achieve obvious social benefits and economic benefits Benefit, good effect, good degreasing effect

Active Publication Date: 2015-01-28
CHINA NAT CHEM ENG THIRD CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the disadvantages in the prior art that the long-distance flammable and explosive gas transportation pipelines need to carry out degreasing operation and pigging operation at the same time, the present invention provides a pollution-free and efficient long-distance pipeline installation and cleaning method

Method used

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  • Pollution-free, high-efficiency and long-distance pipe installing and cleaning method
  • Pollution-free, high-efficiency and long-distance pipe installing and cleaning method

Examples

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Embodiment 1

[0050] As shown in the figure, a pollution-free and high-efficiency long-distance pipeline installation and cleaning method of the present invention, the device includes a ball sending device, a ball collecting device, a pipe cleaner, a passivator and a degreasing agent, and the ball sending device and the ball collecting device use It is installed on the two ends of the pipeline 1 to be cleaned, and is used to send the pig and recover the pig; the ball serving device includes a section of the first temporary pipe, and one end of the first temporary pipe is connected to one end of the pipeline 1 to be cleaned. The other end of the above-mentioned first temporary pipe is provided with a blind plate, which can be closed / opened, and the upper part of the first temporary pipe is sequentially installed with a first vent valve 21, a liquid injection valve 22, an air source valve 23 and a first pressure gauge from the inside to the outside. 24 (eg figure 1 As shown), the air compress...

Embodiment 2

[0072] In this embodiment, the long-distance pipeline cleaning method is basically the same as in Example 1, the difference being that the formula of the passivating agent is represented by mass fraction as 2% sodium nitrite, 0.5% trisodium phosphate, and 97.5% water; If oil pollution is serious, the amount of degreasing agent needs to be increased appropriately. The formula is expressed in terms of mass fraction: sodium tripolyphosphate 3.5%, sodium carbonate 2%, sodium hydroxide 1.5%, sodium borate 0.4%, ethylenediaminetetraacetic acid di Sodium 0.2%, sodium oleate 0.1%, sodium lauryl sulfate 0.1%, alkylphenol polyoxyethylene ether 0.1%, water 92.1%. The passivating agent and degreasing agent of the present invention are all water-based degreasing agents, and the subsequent environmental protection treatment is simple and environmentally friendly, and the formula of the degreasing agent makes the degreasing effect of the degreasing agent efficient, which not only ensures the ...

Embodiment 3

[0074] In this embodiment, the long-distance pipeline cleaning method is basically the same as in Example 1, except that the formula of the passivating agent is represented by mass fraction as sodium nitrite 3%, trisodium phosphate 1%, and water 96%; The formula is expressed in mass fraction as sodium tripolyphosphate 3.0%, sodium carbonate 1.5%, sodium hydroxide 1.0%, sodium borate 0.3%, edetate disodium 0.1%, sodium oleate 0.08%, lauryl sulfate Sodium 0.08%, Alkylphenol Ethoxylate 0.07%, Water 93.87%.

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Abstract

The invention discloses a pollution-free, high-efficiency and long-distance pipe installing and cleaning method, and belongs to the field of pipe cleaning. The pollution-free, high-efficiency and long-distance pipe installing and cleaning method comprises the following steps: installing a ball sending device and a ball receiving device, temporarily testing the leakage and the pressure of a system, sending a diameter-measuring ball, drying, derusting, passivating, chemically degreasing, drying, inspecting and accepting, performing nitrogen protection and transferring, wherein in the derusting, passivating and chemically degreasing steps, a pipe-cleaning train of a pipe cleaner-a chemical agent-a pipe cleaner is used, namely the chemical agent is integrally injected into a space between a first pipe cleaner and a second pipe cleaner; the chemical agent comprises a passivating agent or a degreasing agent; the degreasing agent adopts the formulation as follows: 2-3.5% of sodium tripolyphosphate, 1-2% of sodium carbonate, 0.5-1.5% of sodium hydroxide, 0.2-0.4% of sodium borate, 0.1-0.2% of disodium ethylenediamine tetraacetate, 0.05-0.1% of sodium oleate, 0.05-0.1% of sodium dodecyl sulfate, 0.05-0.1% of alkylphenol ethoxylate and 92.1-96.05% of water. By the pollution-free, high-efficiency and long-distance pipe installing and cleaning method, synchronous and high-efficiency operation of physical cleaning and chemical cleaning of a long-distance pipe can be achieved.

Description

technical field [0001] The invention relates to the technical field of pipeline cleaning, and more specifically, relates to a pollution-free and efficient long-distance pipeline installation and cleaning method of pipeline pig-synchronous passivation and degreasing construction. Background technique [0002] When the raw material steel pipe, steel plate, stainless steel, etc. are rolled, the pipeline will form rolling skin; the pipeline will form rust, welding slag, oily antirust agent and dust coated on the pipeline for anti-corrosion during the process of manufacturing, storage, transportation and installation. , sand, cement, insulation materials and other impurities. The above-mentioned impurities such as scale, rust, welding slag, anti-rust agent and sediment seriously affect the normal use of the pipeline, so it is necessary to clean the pipeline to restore the surface of the material itself in the pipeline. [0003] The method of existing pipeline cleaning mainly con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B9/057B08B9/027C11D1/83C11D3/075C11D3/33
CPCB08B9/027B08B9/057C11D1/83C11D3/0005C11D3/33
Inventor 杨玉明迟杰程龙付
Owner CHINA NAT CHEM ENG THIRD CONSTR
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