CN1754954A - Acid scale-remover for oil pipe line - Google Patents
Acid scale-remover for oil pipe line Download PDFInfo
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- CN1754954A CN1754954A CN 200410066845 CN200410066845A CN1754954A CN 1754954 A CN1754954 A CN 1754954A CN 200410066845 CN200410066845 CN 200410066845 CN 200410066845 A CN200410066845 A CN 200410066845A CN 1754954 A CN1754954 A CN 1754954A
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- descaling agent
- acidic descaling
- pipe laying
- acidic
- acid
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Abstract
The present invention pertains to the field of chemical industry, wherein an scale remover for petroleum pipelines is disclosed, which comprises 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, sodium humate and water, the pH is 2-4. The acidic scale remover is mild and effective.
Description
Technical field
The invention belongs to the chemical industry field, relate to a kind of chemical detergent, more specifically, the present invention relates to a kind of pipe laying acidic descaling agent.
Background technology
At present, domestic general employing acidic descaling agent cleans pipe laying.The corrosion product that acid can wash the multiple hard scale in the pipeline effectively and be made up of metal oxide, although cleaning performance is better, the acidic descaling agent that adopts usually mostly was the very low strongly-acid scale remover of pH value in the past.Use highly acid scale remover often when cleaning pipeline, the metal of pipeline itself is caused very strong corrosion, greatly reduce the work-ing life of pipeline.
In order to solve above shortcoming, the inventor has created a kind of energy safety, gentleness and can effectively remove the acidic descaling agent of dirt in the pipeline, this scale remover has been avoided use strong acid, not only relatively gentle in use, and it the time has also reduced danger in preparation, has also prevented the pollution to environment that causes because of the strong acid discharging simultaneously effectively.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of pipe laying acidic descaling agent, the prescription following (weight percent) that described scale remover adopts: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 40～50%; Ethylenediamine tetraacetic acid (EDTA) 10～15%; Sodium salts humic acids 5～8%; Surplus is a water; PH value after being made into is 2～4.
Further, the prescription following (weight percent) that adopts with acidic descaling agent of pipe laying of the present invention: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 45%; Ethylenediamine tetraacetic acid (EDTA) 15%; Sodium salts humic acids 7%; Surplus is a water; PH value after being made into is 2～3.5.
Further, pipe laying of the present invention is 1 with the Dilution ratio of acidic descaling agent: 5-1: 15.
Further, pipe laying of the present invention is 1: 10 with the Dilution ratio of acidic descaling agent.
Pipe laying of the present invention uses the pH value of acidic descaling agent at 2-4, the deep-etching prescription that does not wherein contain example hydrochloric acid, sulfuric acid and so on, therefore be a kind of acidic descaling agent of gentleness, it can not cause the intensive corrosion to pipeline system, can prolong the work-ing life of pipeline.
According to formulation provided by the present invention, the acidic descaling agent of acquisition is the faint yellow aqueous solution, and proportion is about 1.05, and its suitable use temperature is lower than 70 ℃
Acidic descaling agent of the present invention can safety, remove carbonate scale effectively apace, the acidic descaling agent of the settling of sulfate scale, rust deposite and other mineral substance, silt stores etc., and easy and simple to handle, with low cost.
Embodiment
The embodiment 1 pipe laying using method of acidic descaling agent
The pipe laying that present embodiment is taked is (weight percent) with the prescription of acidic descaling agent: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 45%; Ethylenediamine tetraacetic acid (EDTA) 15%; Sodium salts humic acids 7%; Surplus is a water; The pH value that records after being made into is 3.1, and is standby.
1. it is unimpeded the need cleaning system to be done to check that affirmation needs to clean the position current comprehensively, and system does not have the heavy corrosion fault.
2. the statistics quantity of circulating water is checked circulation loop, guarantees not have to leak.
3. according to the Dilution ratio of the thick definite acidic descaling agent of dirt, use 1: 10 dilution proportion here, add medicament after, surveyed PH one time every half an hour in preceding 5 hours, PH is between 2.5-4.5 in control, adds scale remover when PH surpasses 4.5.Maintenance water pump circulation in preceding 8 hours was closed the pump static immersing 10 hours, turn on pump circulation 2-8 hour more then.
4. acidic descaling agent discharging back is clean with the clear water rinsing, find that sedimentary dirty mark all disappears in the pipe laying, and pipeline surface finds no corrosion after measured.
Claims (4)
1. a pipe laying acidic descaling agent is characterized in that, the prescription of employing is as follows by weight percentage:
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid: 40～50%;
Ethylenediamine tetraacetic acid (EDTA): 10～15%;
Sodium salts humic acids: 5～8%;
Surplus is a water;
PH value after being made into is 2～4.
2. the described pipe laying acidic descaling agent of claim 1 is characterized in that the prescription of employing is as follows by weight percentage:
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid: 45%;
Ethylenediamine tetraacetic acid (EDTA): 15%;
Sodium salts humic acids: 7%;
Surplus is a water;
PH value after being made into is 2～3.5.
3. pipe laying acidic descaling agent according to claim 1 and 2 is characterized in that, the Dilution ratio of acidic descaling agent is 1: 5-1: 15.
4. pipe laying acidic descaling agent according to claim 3 is characterized in that, the Dilution ratio of acidic descaling agent is 1: 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066845 CN1754954A (en) | 2004-09-29 | 2004-09-29 | Acid scale-remover for oil pipe line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066845 CN1754954A (en) | 2004-09-29 | 2004-09-29 | Acid scale-remover for oil pipe line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1754954A true CN1754954A (en) | 2006-04-05 |
Family
ID=36688509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410066845 Pending CN1754954A (en) | 2004-09-29 | 2004-09-29 | Acid scale-remover for oil pipe line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1754954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303029A (en) * | 2011-07-15 | 2012-01-04 | 浙江开化同力电子科技有限公司 | Method for cleaning cooling water pipeline used for transformer |
-
2004
- 2004-09-29 CN CN 200410066845 patent/CN1754954A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303029A (en) * | 2011-07-15 | 2012-01-04 | 浙江开化同力电子科技有限公司 | Method for cleaning cooling water pipeline used for transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |