CN110903915A - Method for cleaning blockage of drainage blind pipe and cleaning agent - Google Patents
Method for cleaning blockage of drainage blind pipe and cleaning agent Download PDFInfo
- Publication number
- CN110903915A CN110903915A CN201911091789.5A CN201911091789A CN110903915A CN 110903915 A CN110903915 A CN 110903915A CN 201911091789 A CN201911091789 A CN 201911091789A CN 110903915 A CN110903915 A CN 110903915A
- Authority
- CN
- China
- Prior art keywords
- blockage
- dredging
- scavenger
- blind pipe
- drainage blind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004140 cleaning Methods 0.000 title abstract description 6
- 239000012459 cleaning agent Substances 0.000 title description 4
- 239000002516 radical scavenger Substances 0.000 claims abstract description 34
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 30
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 24
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 235000019253 formic acid Nutrition 0.000 claims abstract description 12
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000004094 surface-active agent Substances 0.000 claims description 15
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- 230000002378 acidificating effect Effects 0.000 claims description 5
- 230000008719 thickening Effects 0.000 claims description 5
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical group CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims description 2
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 3
- SCLQBRLPJHXGKJ-UHFFFAOYSA-N 1-N-benzyl-4-N-[(4-chlorophenyl)methyl]-4-N-cyclopentyl-1-N-(piperidin-4-ylmethyl)benzene-1,4-disulfonamide Chemical compound C(C1=CC=CC=C1)N(S(=O)(=O)C1=CC=C(C=C1)S(=O)(=O)N(C1CCCC1)CC1=CC=C(C=C1)Cl)CC1CCNCC1 SCLQBRLPJHXGKJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000002253 acid Substances 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2079—Monocarboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a method for clearing and dredging a tunnel after a drainage system of the tunnel is blocked and a scavenger used in the method. The scavenger for dredging the blockage of the drainage blind pipe consists of formic acid, citric acid, V98, sodium dodecyl benzene sulfonate and the like. The scavenger and the cleaning method do not influence the functions of a tunnel water-proof and drainage system and concrete, do not seriously influence the environment and ecology, and have the advantages of convenient construction, quick dredging speed, basically no environmental pollution and relatively low cost.
Description
Technical Field
The invention relates to a method for cleaning blocked pipelines and a scavenger, in particular to a method for cleaning and dredging blocked drainage systems of tunnels and the scavenger used in the method.
Background
The blind pipe in the tunnel system mainly plays a role in removing excessive moisture in the tunnel. The main causes of these water contents are: moisture contained in the soil, moisture permeated into the soil by rain and snow, and the like. Because the water contains salts formed by certain metal ions (mainly calcium and magnesium ions), the salts can be gradually deposited in the blind pipe to block the blind pipe under the change of the environment such as temperature, light, oxygen, carbon dioxide, humidity and the like, so that the drainage is not smooth, and the service life of the tunnel is further shortened. The problem of drainage system (blind pipe) blockage generally exists in the karst tunnel of the multi-rock stratum mountain land rock fusion landform. The whole drainage system is invalid due to the blockage of the drainage system (blind pipe), so that the conditions of water leakage, lining cracking or facility failure and the like occur in the tunnel, the maintenance period and the service life of the tunnel are shortened, and the safety of trains, automobiles and pedestrians passing through the tunnel is seriously threatened. The phenomenon that a drainage system (blind pipe) is blocked is common, so that the safe use of the tunnel is greatly influenced. How to solve this problem is a problem to be solved.
Disclosure of Invention
The invention provides a method for cleaning blockage of a drainage blind pipe and simultaneously provides a scavenger for blockage of the drainage blind pipe.
The invention relates to a scavenger for dredging the blockage of a drainage blind pipe, which comprises 15 to 35 weight percent of formic acid and the balance of water. The concentration of formic acid used in the scavenging agent is not easy to be too high, if the concentration of formic acid is too high, the scavenging agent can corrode reinforced cement, but if the concentration of formic acid is too low, the speed of scavenging blind pipes is slow, and the scavenging agent is not favorable for construction.
Preferably, the scavenger for dredging the blockage of the drainage blind pipe, disclosed by the invention, is also provided with 5-12% of citric acid by weight.
Preferably, the scavenger for dredging the blockage of the drainage blind pipe also comprises 0.5 to 5.0 weight percent of surfactant.
More preferably, the surfactant in the scavenger for dredging the blockage of the drainage blind pipe can be an acidic thickening surfactant V98 or sodium dodecyl benzene sulfonate which is used for replacing the V98 acidic thickening surfactant.
The invention provides another scavenging agent for dredging the blockage of a drainage blind pipe, which comprises 20 to 50 percent of acetic acid, 12 percent of citric acid, 0.5 to 2 percent of surfactant by weight and the balance of water.
Preferably, the surfactant in the scavenger for dredging the blockage of the drainage blind pipe is an acidic thickening surfactant V98 or dodecyl benzene sulfonic acid.
The method for dredging the blockage of the drainage blind pipe is to inject any scavenger for dredging the blockage of the drainage blind pipe into the blocked drainage blind pipe.
Preferably, the method for dredging the blockage of the drainage blind pipe is to inject a scavenger with the temperature of 10-60 ℃ into the drainage blind pipe to dredge the blockage.
The drainage blind pipe is blocked due to geological conditions. By analyzing the mechanism of karst development and deposition, the blockage system of the karst tunnel drainage system is caused by the effects of chemical crystallization and debris deposition. When groundwater flows through calcium carbonate rich rock formations such as limestone, it will carry a significant amount of calcium salt material. After flowing water enters the tunnel area, calcareous precipitates can be generated at the part with slow flow speed or accumulated water in the pipeline, and the precipitates can be crystallized and coagulated into blocks after long-term precipitation accumulation. On the other hand, from the engineering influence factor, the dissolved substances of the concrete lining, the design and construction of a drainage system and the underground water balance state caused by tunnel excavation are all factors causing the blockage of the drainage system of the karst tunnel.
The deposits of blind tube blockage formed by the tunnel are mainly chemical crystals, namely carbonate, sulfate and phosphate precipitates formed by calcium and magnesium ions. The use of acids to dissolve such salts seems to be a viable solution as is generally thought, but more careful consideration has to be given to the interaction of the acid with the tunnel waterproofing system and the concrete, and the environmental effects that may result after dissolution of the acid. While the cost of such treatment will necessarily be a concern.
The cleaning agent is finally obtained by various experiments, comparison and screening, can take various factors into consideration, does not influence the functions of a tunnel water-proof and drainage system and concrete, does not have serious influence on environment and ecology, is convenient to construct, has high dredging speed, basically does not pollute the environment and has relatively low cost.
Detailed Description
The invention is illustrated below with reference to examples and corresponding experimental results.
The invention provides the following specific cleaning agents and conditions of related experiments:
1) 30% formic acid, and the balance water.
2) 30% formic acid, 1.5% V98, and the balance water.
3) 30% of formic acid, 0.8% of sodium dodecyl benzene sulfonate and the balance of water.
4) 20% formic acid, 12% citric acid and the balance of water.
5) 20% formic acid, 12% citric acid, 1.5% V98, and the balance water.
6) 20% of formic acid, 12% of citric acid, 0.8% of sodium dodecyl benzene sulfonate and the balance of water.
7) 30% of acetic acid, 12% of citric acid, 0.8% of sodium dodecyl benzene sulfonate and the balance of water.
8) 20% acetic acid, 12% citric acid, 1.5% V98, and the balance water.
The thickness of the deposit 1 of the tested blind pipe is 1.0 cm, the scavenger is injected at room temperature and then is removed and dredged, and the effects are as follows:
the scavenger 1) took 18 minutes, and the reaction rate was evident during the treatment, and a large amount of bubbles were generated, which hardly reacted to the reinforcing steel bars, but slightly reacted to the cement.
The scavenger 2) or 3) takes 12 minutes, the reaction speed is obvious in the treatment process, a large amount of bubbles are generated, the reaction on the reinforcing steel bars is almost avoided, and the reaction on the cement is slight.
The scavenger 5) or 6) takes 20 minutes for treatment, and the reaction speed is high, bubbles are generated, the reaction on the reinforcing steel bars is almost not carried out, but the reaction on the cement is slight.
The scavenger 5) or 6) is heated to 60 ℃ and then injected, the treatment time is 13 minutes, the reaction speed is obvious in the treatment process, bubbles are generated, the reaction on the steel bars and the cement is mild, and the bubbles are generated and are corroded.
The treatment time of the scavenging agent 7) or 8) is 25 minutes, the treatment has no influence on the steel bars, and the cement is slightly corroded.
The scavenger 7) or 8) is heated to 50 ℃ and then injected for treatment, the treatment time can be shortened to 20 minutes, the steel bar is slightly corroded, and the reaction to cement is quicker.
The effect on the reinforced cement is mainly related to the strength of the acid, the concentration of the acid and the reaction temperature. Acid-resistant cement is recommended to be used for the part contacted with the blind pipe, or the scavenger is fully recycled to avoid long-time contact.
Claims (10)
1. A scavenger for dredging the blockage of a drainage blind pipe is characterized by comprising 15-35 wt% of formic acid and the balance of water.
2. The scavenger for dredging the blockage of the drainage blind pipe according to claim 1, wherein the scavenger also comprises 5 to 12 weight percent of citric acid.
3. A scavenger for dredging the blockage of a drainage blind according to claim 1 or 2, which is characterized by further comprising 0.5 to 5.0 weight percent of surfactant.
4. A scavenger for dredging the blockage of a drainage blind according to claim 3, characterized in that the surfactant is an acidic thickening surfactant V98.
5. The removing agent for dredging the blockage of the drainage blind pipe according to claim 3, characterized in that the surfactant is sodium dodecyl benzene sulfonate.
6. A scavenger for dredging the blockage of drainage blind pipes is characterized by comprising 20-50% of acetic acid, 12% of citric acid, 0.5-2% of surfactant by weight and the balance of water.
7. The scavenger for dredging the blockage of the drainage blind pipe according to claim 6, characterized in that the surfactant is an acidic thickening surfactant V98.
8. The removing agent for dredging the blockage of the drainage blind pipe according to claim 6, characterized in that the surfactant is dodecyl benzene sulfonic acid.
9. A method for dredging the blockage of a drainage blind pipe, which is characterized in that a scavenger for dredging the blockage of the drainage blind pipe according to any one of claims 1 to 8 is injected into the blocked drainage blind pipe.
10. The method for dredging the blockage of the drainage blind pipe according to claim 9, wherein the temperature of the injected scavenger for dredging the blockage of the drainage blind pipe is 10-60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911091789.5A CN110903915A (en) | 2019-11-11 | 2019-11-11 | Method for cleaning blockage of drainage blind pipe and cleaning agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911091789.5A CN110903915A (en) | 2019-11-11 | 2019-11-11 | Method for cleaning blockage of drainage blind pipe and cleaning agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110903915A true CN110903915A (en) | 2020-03-24 |
Family
ID=69817035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911091789.5A Pending CN110903915A (en) | 2019-11-11 | 2019-11-11 | Method for cleaning blockage of drainage blind pipe and cleaning agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110903915A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113388457A (en) * | 2021-07-19 | 2021-09-14 | 成都扬华源动新材料科技有限公司 | Dredging cleaning agent and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101085447A (en) * | 2007-05-24 | 2007-12-12 | 上海大学 | Water drain pipe liquid dredging agent and preparation method thereof |
| CN107974370A (en) * | 2017-12-06 | 2018-05-01 | 甘肃黑马石化工程有限公司 | Pipeline deodorization dredging agent composition and preparation method thereof |
| CN109439471A (en) * | 2018-12-17 | 2019-03-08 | 甘肃云通工程技术服务有限公司 | Tunnel blind pipe Crystallization Plugging scavenger |
-
2019
- 2019-11-11 CN CN201911091789.5A patent/CN110903915A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101085447A (en) * | 2007-05-24 | 2007-12-12 | 上海大学 | Water drain pipe liquid dredging agent and preparation method thereof |
| CN107974370A (en) * | 2017-12-06 | 2018-05-01 | 甘肃黑马石化工程有限公司 | Pipeline deodorization dredging agent composition and preparation method thereof |
| CN109439471A (en) * | 2018-12-17 | 2019-03-08 | 甘肃云通工程技术服务有限公司 | Tunnel blind pipe Crystallization Plugging scavenger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113388457A (en) * | 2021-07-19 | 2021-09-14 | 成都扬华源动新材料科技有限公司 | Dredging cleaning agent and preparation method thereof |
| CN113388457B (en) * | 2021-07-19 | 2022-05-03 | 成都扬华源动新材料科技有限公司 | Dredging cleaning agent and preparation method thereof |
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Application publication date: 20200324 |