KR20140025982A - Composition for removing scale and rust - Google Patents

Composition for removing scale and rust Download PDF

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KR20140025982A
KR20140025982A KR1020120092795A KR20120092795A KR20140025982A KR 20140025982 A KR20140025982 A KR 20140025982A KR 1020120092795 A KR1020120092795 A KR 1020120092795A KR 20120092795 A KR20120092795 A KR 20120092795A KR 20140025982 A KR20140025982 A KR 20140025982A
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scale
rust
cleaning composition
weight
parts
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KR1020120092795A
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KR101514715B1 (en
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유홍숙
심상빈
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유홍숙
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • 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
    • C11D1/66—Non-ionic compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • C23G1/061—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors nitrogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • C23G1/063—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors heterocyclic compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • C23G1/068—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors compounds containing a C=C bond

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Detergent Compositions (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

The present invention relates to a composition for removing scale and rust and, more specifically, to a composition for removing scale and rust which is capable of removing scale and rust generated in a pipe of a cooling top, a boiler, and a heat exchanger without an operation break of a facility, and inhibiting corrosion by forming a passivating film on the facility. The described composition for removing scale and rust comprises purified water, ethylene diamine tetraacetic acid, ammonia solution, corrosion inhibitors, antifoaming agents, and acidity control agents. [Reference numerals] (AA) Comparative example 1; (BB) Embodiment 1; (CC) Room temperature/before a test; (DD) Comparative example 2; (EE) Comparative example 3

Description

스케일 및 녹 세정용 조성물 {COMPOSITION FOR REMOVING SCALE AND RUST}Scale and rust cleaning composition {COMPOSITION FOR REMOVING SCALE AND RUST}

본 발명은 스케일 및 녹 세정용 조성물에 관한 것으로, 더욱 상세하게는, 열교환기, 보일러 및 냉각 탑 등의 배관에서 발생하는 스케일 및 녹을 시설물의 가동 중단없이 제거할 수 있고, 시설물에 부동태화 막을 형성하여 부식을 억제하는 스케일 및 녹 세정용 조성물에 관한 것이다.
The present invention relates to a scale and rust cleaning composition, and more particularly, it is possible to remove the scale and rust generated in the piping such as heat exchangers, boilers and cooling towers without downtime of the facility, to form a passivation film in the facility The present invention relates to a scale and a rust cleaning composition that inhibits corrosion.

본 발명은 스케일 및 녹 세정용 조성물에 관한 것으로, 더욱 상세하게는, 열교환기, 보일러 및 냉각 탑 등의 배관에서 발생하는 스케일 및 녹을 시설물의 가동 중단없이 제거할 수 있고, 시설물에 부동태화 막을 형성하여 부식을 억제하는 스케일 및 녹 세정용 조성물에 관한 것이다.The present invention relates to a scale and rust cleaning composition, and more particularly, it is possible to remove the scale and rust generated in the piping such as heat exchangers, boilers and cooling towers without downtime of the facility, to form a passivation film in the facility The present invention relates to a scale and a rust cleaning composition that inhibits corrosion.

수용성 시스템 중 특히 보일러 시스템, 냉각탑 시스템, 열교환 시스템, 담수화 시스템, 제지, 가열/냉각 시스템, 소방용수 및 원자로 등의 산업용 수용성 시스템들은 순환수와 접촉하는 내부 표면에 퇴적물들이 형성되기 쉽다. 스케일 및 철 산화물의 퇴적물은 소정의 물 공급원 안에 존재하는 것뿐만 아니라, 시스템의 배관 및 기타 부분의 금속 표면과 물 사이의 화학적 반응에 의하여 발생하게 된다.Among water soluble systems, industrial water soluble systems such as boiler systems, cooling tower systems, heat exchange systems, desalination systems, papermaking, heating / cooling systems, fire water and reactors are susceptible to deposits on the inner surfaces in contact with circulating water. Deposits of scale and iron oxides are not only present in certain water sources, but are also generated by chemical reactions between water and metal surfaces in piping and other parts of the system.

이러한 스케일 및 철 산화물의 퇴적물은 금속 표면의 퇴적물 부식을 방지하고 깨끗한 열전달 표면을 유지하여 양호한 열효율을 보증하기 위해 제거되어야 한다.These scales and deposits of iron oxides should be removed to prevent deposit corrosion on the metal surface and to maintain a clean heat transfer surface to ensure good thermal efficiency.

금속 산화물의 축적은 열전달율에 영향을 미칠 수 있고, 배관을 막히게 하여 물 흐름을 제한하는 원인이 될 수 있으며, 일반적으로 물의 부식 측면을 증가시킨다. 용존 산소와 용존 이온 무기 고형물을 함유하는 물과 같이 부식성의 환경에 노출된 금속 표면은 금속 위에 형성되는 퇴적 고형물에 의해 쉽게 부식되며, 만약 퇴적물이 제때에 제거되지 않는다면, 퇴적물로 인한 부식 물질이 금속 내부로 스며들어 부식이 급격하게 확산되어, 시스템의 누수가 발생하기 시작하고 그 시스템은 라인으로부터 떼어내어 수리하거나 교체해야 하기 때문에, 엄청난 경제적 손실을 야가한다.Accumulation of metal oxides can affect heat transfer rates, clog piping and limit water flow and generally increase the corrosion side of water. Metal surfaces exposed to corrosive environments, such as water containing dissolved oxygen and dissolved ionic inorganic solids, are easily corroded by deposit solids formed on the metal, and if the deposits are not removed in time, the corrosive substances from the deposits are The corrosion spreads rapidly and the system begins to leak and the system has to be removed from the line and repaired or replaced, resulting in huge economic losses.

전술한 문제점을 해결하기 위해 종래에는, 수용성 시스템의 가동을 중단한 상태에서 산성의 세정액으로 시스템 내부에 발생한 스케일 및 녹을 세정하였으나, 이러한 세정방법은 산성의 세정액을 사용하기 때문에, 시스템 내부를 중성화하는 과정을 거쳐야하며, 작업환경에서 강산과 수소가 다량 방출되어 작업장을 오염시키며, 폐기물의 처리비용이 매우 높은 문제점이 있었다.
In order to solve the above problems, conventionally, the scale and rust generated inside the system were cleaned with an acidic cleaning liquid while the water-soluble system was stopped. However, since this cleaning method uses an acidic cleaning liquid, the inside of the system is neutralized. It has to go through the process, a large amount of strong acid and hydrogen is released in the working environment to pollute the workplace, there was a problem that the disposal cost of the waste is very high.

본 발명의 목적은 열교환기, 보일러 및 냉각 탑 등의 가동을 중단하지 않고 배관에서 발생한 스케일 및 녹을 세정할 수 있으며, 배관의 부식을 최소화하는 스케일 및 녹 세정용 조성물을 제공하는 것이다.An object of the present invention is to provide a scale and rust cleaning composition that can clean the scale and rust generated in the pipe without interrupting the operation of the heat exchanger, boiler and cooling tower, and minimize the corrosion of the pipe.

본 발명의 다른 목적은 pH가 4 내지 7.5를 나타내어, 스케일 및 녹의 세정과정에서 오염물질의 방출이 최소화되고, 배관의 표면에 부동태화 막을 형성하는 스케일 및 녹 세정용 조성물을 제공하는 것이다.
Another object of the present invention is to provide a scale and rust cleaning composition having a pH of 4 to 7.5, minimizing the release of contaminants in the scale and rust cleaning process, and forming a passivation film on the surface of the pipe.

본 발명의 목적은 정제수, 에틸렌디아민테트라아세트산, 암모니아수, 부식억제제, 소포제 및 산도조절제로 이루어지는 것을 특징으로 하는 스케일 및 녹 세정용 조성물을 제공함에 의해 달성된다.An object of the present invention is achieved by providing a scale and rust cleaning composition, comprising purified water, ethylenediaminetetraacetic acid, ammonia water, corrosion inhibitor, antifoaming agent and acidity regulator.

본 발명의 바람직한 특징에 따르면, 상기 녹 세정용 조성물은 정제수 100 중량부, 에틸렌디아민테트라아세트산 90 내지 95 중량부, 암모니아수 40 내지 60 중량부, 부식억제제 0.0025 내지 0.25 중량부, 소포제 0.00025 내지 0.0025 중량부 및 산도조절제 0.01 내지 0.1 중량부로 이루어지는 것으로 한다.According to a preferred feature of the present invention, the rust cleaning composition is 100 parts by weight of purified water, 90 to 95 parts by weight of ethylenediaminetetraacetic acid, 40 to 60 parts by weight of ammonia, 0.0025 to 0.25 parts by weight of corrosion inhibitor, 0.00025 to 0.0025 parts by weight of antifoaming agent. And 0.01 to 0.1 parts by weight of acidity regulator.

본 발명의 더 바람직한 특징에 따르면, 상기 부식억제제는 소듐 몰리브데이트, 소듐 나이트라이트, 1,2,3-벤조트리아졸, 피롤리돈 및 알킬아민으로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것으로 한다.According to a more preferred feature of the invention, the corrosion inhibitor is to be made of one or more selected from the group consisting of sodium molybdate, sodium nitrite, 1,2,3-benzotriazole, pyrrolidone and alkylamine.

본 발명의 더욱 바람직한 특징에 따르면, 상기 소포제는 디메칠폴리실록산으로 이루어지는 것으로 한다.According to a further preferred feature of the invention, the antifoaming agent is to be made of dimethylpolysiloxane.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 산도조절제는 아스코르브산으로 이루어지는 것으로 한다.
According to a still more preferred feature of the present invention, the acidity regulator is made of ascorbic acid.

본 발명에 따른 스케일 및 녹 세정용 조성물은 열교환기, 보일러 및 냉각 탑 등의 가동을 중단하지 않고 배관에서 발생한 스케일 및 녹을 세정할 수 있으며, 배관의 부식을 최소화하는 탁월한 효과를 나타낸다.The composition for scale and rust cleaning according to the present invention can clean scale and rust generated in a pipe without interrupting operation of a heat exchanger, a boiler and a cooling tower, and exhibits an excellent effect of minimizing corrosion of the pipe.

또한, pH가 4 내지 7.5를 나타내어, 스케일 및 녹의 세정과정에서 오염물질의 방출이 최소화되고, 배관의 표면에 부동태화 막을 형성하는 탁월한 효과를 나타낸다.
In addition, the pH ranges from 4 to 7.5, minimizing the release of contaminants in the scale and rust cleaning process, and exhibits an excellent effect of forming a passivation film on the surface of the pipe.

도 1은 본 발명의 실시예 1 및 비교예 1 내지 3을 통해 제조된 스케일 및 녹 세정용 조성물로 처리되기 전 녹이 발생한 강판을 나타낸 사진이다.
도 2는 본 발명의 실시예 1 및 비교예 1 내지 3을 통해 제조된 스케일 및 녹 세정용 조성물로 상온(20℃)에서 23시간 처리된 후에 강판을 나타낸 사진이다.
도 3은 본 발명의 실시예 1 및 비교예 1 내지 3을 통해 제조된 스케일 및 녹 세정용 조성물로 상온(20℃)에서 3일 동안 처리된 후에 강판을 나타낸 사진이다.
도 4는 본 발명의 실시예 1 및 비교예 1 내지 3을 통해 제조된 스케일 및 녹 세정용 조성물로 처리되기 전 녹이 발생한 강판을 나타낸 사진이다.
도 5는 본 발명의 실시예 1 및 비교예 1 내지 3을 통해 제조된 스케일 및 녹 세정용 조성물로 60℃의 온도에서 7시간 처리된 후에 강판을 나타낸 사진이다.
도 6은 본 발명의 실시예 1 및 비교예 1 내지 3을 통해 제조된 스케일 및 녹 세정용 조성물로 60℃에서 24시간 동안 처리된 후에 강판을 나타낸 사진이다.
도 7은 본 발명의 실시예 1 내지 2, 비교예 1 및 비교예 5를 통해 제조된 스케일 및 녹 세정용 조성물로 처리되기 전 녹이 발생한 강판을 나타낸 사진이다.
도 8은 본 발명의 실시예 1 내지 2, 비교예 1 및 비교예 5를 통해 제조된 스케일 및 녹 세정용 조성물 60℃의 온도에서 3시간 동안 처리된 후에 강판을 나타낸 사진이다.1 is a photograph showing a steel sheet in which rust occurred before being treated with the scale and rust cleaning composition prepared in Example 1 and Comparative Examples 1 to 3 of the present invention.
Figure 2 is a photograph showing the steel sheet after the treatment for 23 hours at room temperature (20 ℃) with the scale and rust cleaning composition prepared through Example 1 and Comparative Examples 1 to 3 of the present invention.
Figure 3 is a photograph showing the steel sheet after the treatment for 3 days at room temperature (20 ℃) with the scale and rust cleaning composition prepared through Example 1 and Comparative Examples 1 to 3 of the present invention.
Figure 4 is a photograph showing the steel sheet rust generated before the treatment with the scale and rust cleaning composition prepared in Example 1 and Comparative Examples 1 to 3 of the present invention.
5 is a photograph showing the steel sheet after the treatment for 7 hours at a temperature of 60 ℃ with the scale and rust cleaning composition prepared in Example 1 and Comparative Examples 1 to 3 of the present invention.
Figure 6 is a photograph showing the steel sheet after the treatment for 24 hours at 60 ℃ to the scale and rust cleaning composition prepared through Example 1 and Comparative Examples 1 to 3 of the present invention.
Figure 7 is a photograph showing the steel sheet rust generated before being treated with the scale and rust cleaning composition prepared through Examples 1 to 2, Comparative Example 1 and Comparative Example 5 of the present invention.
8 is a photograph showing the steel sheet after the treatment for 3 hours at a temperature of the scale and rust cleaning composition 60 ℃ prepared through Examples 1 to 2, Comparative Examples 1 and 5 of the present invention.

이하에는, 본 발명의 바람직한 실시예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.
Hereinafter, preferred embodiments of the present invention and physical properties of the respective components will be described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, And this does not mean that the technical idea and scope of the present invention are limited.

본 발명에 따른 스케일 및 녹 세정용 조성물은 정제수, 에틸렌디아민테트라아세트산, 암모니아수, 부식억제제, 소포제 및 산도조절제로 이루어지며, 정제수 100 중량부, 에틸렌디아민테트라아세트산 90 내지 95 중량부, 암모니아수 40 내지 60 중량부, 부식억제제 0.0025 내지 0.25 중량부, 소포제 0.00025 내지 0.0025 중량부 및 산도조절제 0.01 내지 0.1 중량부로 이루어지는 것이 더욱 바람직하다.
The scale and rust cleaning composition according to the present invention is composed of purified water, ethylenediaminetetraacetic acid, ammonia water, corrosion inhibitor, antifoaming agent and acidity regulator, 100 parts by weight of purified water, 90 to 95 parts by weight of ethylenediaminetetraacetic acid, 40 to 60 ammonia water It is more preferable that it is comprised by weight part, 0.0025-0.25 weight part of corrosion inhibitors, 0.00025-0.0025 weight part of antifoamers, and 0.01-0.1 weight part of acidity regulators.

전술한 정제수는 100 중량부가 첨가되며, 본 발명에 따른 스케일 및 녹 세정용 조성물의 주성분인 에틸렌디아민테트라아세트산을 희석시켜 농도를 조절해주는 역할을 한다.
100 parts by weight of the above-mentioned purified water is added and serves to adjust the concentration by diluting ethylenediaminetetraacetic acid, which is a main component of the scale and rust cleaning composition according to the present invention.

전술한 에틸렌디아민테트라아세트산(EDTA, ethylenediaminetetraacetic acid)은 90 내지 95 중량부가 함유되며, 본 발명에 따른 스케일 및 녹 세정용 조성물의 주성분으로, 우수한 스케일 및 녹 세정 효과를 나타낸다.The aforementioned ethylenediaminetetraacetic acid (EDTA, ethylenediaminetetraacetic acid) contains 90 to 95 parts by weight, and is a main component of the scale and rust cleaning composition according to the present invention, and shows an excellent scale and rust cleaning effect.

전술한 에틸렌디아민테트라아세트산은 분말형태로 함유되는데, 전술한 에틸렌디아민테트라아세트산의 함량이 90 중량부 미만이면 본 발명에 따른 스케일 및 녹 세정용 조성물의 스케일 및 녹 세정 효과가 저하되며, 95 중량부를 초과하게 되면 스케일 및 녹 세정 효과는 더 이상 향상되지 않고, 제조비용을 증가시킨다.
The above-mentioned ethylenediaminetetraacetic acid is contained in a powder form. When the content of the above-mentioned ethylenediaminetetraacetic acid is less than 90 parts by weight, the scale and rust cleaning effects of the scale and rust cleaning composition according to the present invention are reduced, and 95 parts by weight. When exceeded, the scale and rust cleaning effect no longer improves, increasing the manufacturing cost.

전술한 암모니아수는 40 내지 60 중량부가 함유되며, 전술한 에틸렌디아민테트라아세트산 분말이 전술한 정제수에 용해될 수 있도록 하는 역할을 하는데, 전술한 에틸렌디아민테트라아세트산 분말 성분은 그 자체로는 전술한 정제수 성분에 용해되지 않고, 분산되기 때문에, 암모니아수를 혼합하여 전술한 에틸렌디아민테트라아세트산 분말이 전술한 정제수에 용해될 수 있도록 한다.The above-mentioned ammonia water contains 40 to 60 parts by weight, and serves to dissolve the above-mentioned ethylenediaminetetraacetic acid powder in the above-mentioned purified water. Since it is not dissolved in, but dispersed, the ammonia water is mixed so that the aforementioned ethylenediaminetetraacetic acid powder can be dissolved in the above-mentioned purified water.

또한, 전술한 암모니아수는 전술한 산성의 에틸렌디아민테트라아세트산과 반응하여 pH가 6.5 내지 7.5을 나타내어 중성에 가까운 스케일 및 족 세정용 조성물을 생성하는 역할을 한다.In addition, the above-mentioned ammonia water reacts with the above-described acidic ethylenediaminetetraacetic acid to show a pH of 6.5 to 7.5, thereby serving to generate a composition for scale and group cleaning close to neutrality.

이때, 전술한 암모니아수의 함량이 40 중량부 미만이면 세정용 조성물의 pH가 지나치게 낮아져 강산성의 세정용 조성물이 제조되며, 암모니아수의 함량이 60 중량부를 초과하게 되면 세정용 조성물의 pH가 지나치게 증가하여 강알칼리성을 나타내기 때문에 세정용 조성물의 세정효과가 저하된다.
At this time, when the content of the above-mentioned ammonia water is less than 40 parts by weight, the pH of the cleaning composition is too low to prepare a strongly acidic cleaning composition, and when the content of the ammonia water exceeds 60 parts by weight, the pH of the cleaning composition is excessively increased to Since alkalinity is exhibited, the cleaning effect of the cleaning composition is lowered.

전술한 부식억제제는 0.0025 내지 0.25 중량부가 함유되며, 열교환기, 보일러 및 냉각 탑 등의 배관이 부식되는 것을 억제하는 역할을 하는데, 부식억제제의 함량이 0.0025 미만이면, 부식억제 효과가 저하되어 세정 중에 배관에서 누수현상이 발생할 수 있다.The corrosion inhibitor described above contains 0.0025 to 0.25 parts by weight, and serves to suppress corrosion of pipes such as heat exchangers, boilers, and cooling towers. When the content of the corrosion inhibitor is less than 0.0025, the corrosion inhibitory effect decreases during cleaning. Leakage may occur in the piping.

이때, 전술한 부식억제제는 소듐 몰리브데이트, 소듐 나이트라이트, 1,2,3-벤조트리아졸, 피롤리돈 및 알킬아민으로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것이 바람직하다.At this time, the above-mentioned corrosion inhibitor is preferably made of one or more selected from the group consisting of sodium molybdate, sodium nitrite, 1,2,3-benzotriazole, pyrrolidone and alkylamine.

전술한 피롤리돈은 용액 중에서 양쪽성 이온이 되는 C4 내지 C16 알킬 피롤리돈의 형태를 나타내며, 이는 양전하 또는 음전하로 대전된 금속 표면에 흡착되는 능력을 가지는 형태로써 부식에 대해 균질한 보호를 제공한다.The aforementioned pyrrolidones represent the form of C 4 to C 16 alkyl pyrrolidones that are amphoteric ions in solution, which have the ability to adsorb on positively or negatively charged metal surfaces and homogeneous protection against corrosion To provide.

또한, 전술한 알킬아민 화합물은 C1 내지 C18의 형태를 나타내며, 중성 또는 약알칼리성 pH에서 이온화하여 4급 암모늄 형태를 형성하고, 이 양이온은 음전하로 대전된 금속 표면에 흡착될 수 있으며, 다시 부식의 억제를 촉진시킨다.
In addition, the aforementioned alkylamine compounds exhibit the form of C 1 to C 18 , which are ionized at neutral or weakly alkaline pH to form quaternary ammonium forms, which cations can be adsorbed on negatively charged metal surfaces, again Promotes the inhibition of corrosion.

전술한 소포제 0.00025 내지 0.0025 중량부가 함유되며, 본 발명에 따른 스케일 및 녹 세정용 조성물로 배관 등에 발생한 스케일 및 녹을 세정할 때, 기포가 발생하는 것을 억제하는 역할을 한다.0.00025 to 0.0025 parts by weight of the above-mentioned antifoaming agent is contained, and when cleaning the scale and rust generated in a pipe or the like with the scale and rust cleaning composition according to the present invention, serves to suppress the generation of bubbles.

전술한 소포제의 함량이 0.00025 중량부 미만이면, 소포제의 기능이 제대로 발휘되지 못해 배관 등에서 세정이 이루어질 때, 다량의 기포가 발생하여 세정상태를 육안으로 구별할 수 없게 된다.If the amount of the antifoaming agent described above is less than 0.00025 parts by weight, when the function of the antifoaming agent is not properly exhibited and the cleaning is performed in a pipe or the like, a large amount of bubbles are generated and the cleaning state cannot be visually distinguished.

이때, 전술한 소포제는 세정액에서 발생하는 기포를 억제할 수 있는 성분이면 특별히 한정되지 않지만, 디메칠폴리실록산으로 이루어지는 것이 바람직하다.
At this time, the above-mentioned antifoaming agent is not particularly limited as long as it is a component capable of suppressing bubbles generated in the washing liquid, but is preferably made of dimethylpolysiloxane.

전술한 산도조절제는 0.01 내지 0.1 중량부가 함유되며, 세정 과정에서 세정액의 pH를 4 내지 6.5로 조절하는 역할을 하는데, 산도조절제의 함량이 0.01 중량부 미만이면 pH 상승억제 효과가 미미하여 세정액이 강알칼리화 되어 배관에 투입되어 있는 배관액에 녹아 있는 철 이온이 석출되며, 산도조절제의 함량이 0.1 중량부를 초과하게 되면 세정액의 pH가 4 미만을 나타내는 강산으로 변해 배관을 손상시키게 된다.
The acidity regulator described above contains 0.01 to 0.1 parts by weight, and serves to adjust the pH of the cleaning solution to 4 to 6.5 during the cleaning process. When the content of the acidity regulator is less than 0.01 parts by weight, the pH increase inhibitory effect is insignificant, and the cleaning solution is strongly alkaline. The iron ions dissolved in the pipe liquid that is added to the pipe is precipitated, and if the content of the acidity regulator exceeds 0.1 parts by weight, the pH of the cleaning liquid is changed to a strong acid having a pH of less than 4 to damage the pipe.

이하에서는, 본 발명에 따른 스케일 및 녹 세정용 조성물의 녹제거 효과를 실시예를 들어 설명하기로 한다.
Hereinafter, the rust removal effect of the scale and rust cleaning composition according to the present invention will be described with an example.

<실시예 1>&Lt; Example 1 >

정제수 100 중량부, 에틸렌디아민테트라아세트산 45 중량부, 암모니아수 50 중량부, 부식억제제로 소듐 몰리브데이트 0.01 중량부, 소포제로 디메칠폴리실록산 0.001 중량부 및 산도조절제로 아스코르브산 0.05 중량부를 혼합하여 스케일 및 녹 세정용 조성물을 제조하였다.
100 parts by weight of purified water, 45 parts by weight of ethylenediaminetetraacetic acid, 50 parts by weight of ammonia, 0.01 parts by weight of sodium molybdate as a corrosion inhibitor, 0.001 parts by weight of dimethylpolysiloxane as an antifoaming agent and 0.05 parts by weight of ascorbic acid as an acidity regulator, A rust cleaning composition was prepared.

<비교예 1>&Lt; Comparative Example 1 &

전술한 실시예 1과 동일하게 진행하되, 에틸렌디아민테트라아세트산 23 중량부를 혼합하여 스케일 및 녹 세정용 조성물을 제조하였다.
Proceed in the same manner as in Example 1, 23 parts by weight of ethylenediaminetetraacetic acid was mixed to prepare a scale and rust cleaning composition.

<비교예 2>&Lt; Comparative Example 2 &

정제수 100 중량부에 한길공업화학의 스케일 용해제인 CWC-10p(아민이 첨가된 유기산 베이스 성분) 5.5 중량부를 혼합하여 스케일 및 녹 세정용 조성물을 제조하였다.
A scale and rust cleaning composition was prepared by mixing 5.5 parts by weight of CWC-10p (amine-based organic acid base component) which is a scale dissolving agent of 100 parts by weight of purified water.

<비교예 3>&Lt; Comparative Example 3 &

전술한 비교예 3과 동일하게 진행하되, CWC-10p 11 중량부를 혼합하여 스케일 및 녹 세정용 조성물을 제조하였다.
Proceed in the same manner as in Comparative Example 3 above, CWC-10p 11 parts by weight was mixed to prepare a scale and rust cleaning composition.

<비교예 4>&Lt; Comparative Example 4 &

전술한 실시예 1과 동일하게 진행하되, 개미산을 투입하여 pH사 4인 스케일 및 녹 세정용 조성물을 제조하였다.
Proceed in the same manner as in Example 1 above, formic acid was added to prepare a scale and rust cleaning composition having a pH of 4.

<실시예 2><Example 2>

전술한 실시예 1과 동일하게 진행하되, 아스코르브산을 투입하여 pH사 4인 스케일 및 녹 세정용 조성물을 제조하였다.
Proceed in the same manner as in Example 1 above, ascorbic acid was added to prepare a scale and rust cleaning composition having a pH of 4.

<비교예 5>&Lt; Comparative Example 5 &

전술한 비교예 1과 동일하게 진행하되, 아스코르브산을 투입하여 pH사 4인 스케일 및 녹 세정용 조성물을 제조하였다.
Proceed in the same manner as in Comparative Example 1, ascorbic acid was added to prepare a scale and rust cleaning composition of pH 4.

전술한 실시예 1 및 비교예 1 내지 3을 통해 제조된 스케일 및 녹 세정용 조성물의 온도(20℃, 60℃) 및 시간(7시간 내지 3일)의 흐름에 따른 녹제거 효율을 측정하여 아래 도 1 내지 6에 나타내었다.Measure the rust removal efficiency according to the flow of the temperature (20 ℃, 60 ℃) and time (7 hours to 3 days) of the scale and rust cleaning composition prepared through the above-described Example 1 and Comparative Examples 1 to 3 below 1 to 6 are shown.

(단, 스케일 및 녹 세정용 조성물의 녹제거 효율은 녹이 발생한 원형 강판을 스케일 및 녹 세정용 조성물이 담긴 1000ml의 비이커에 침지하기 전과 침지한 후에 상태를 촬영하여 나타내었다.)(However, the rust removal efficiency of the scale and rust cleaning composition was shown by photographing the state of the circular steel sheet on which rust occurred before and after immersion in a 1000 ml beaker containing the scale and rust cleaning composition.)

아래 도 1 내지 6에 나타낸 것처럼 본 발명의 실시예 1을 통해 제조된 스케일 및 녹 세정용 조성물의 녹 제거 효율이 가장 우수하게 나타난 것을 알 수 있다.
As shown in Figures 1 to 6 below, it can be seen that the rust removal efficiency of the scale and rust cleaning composition prepared through Example 1 of the present invention was most excellent.

또한, 전술한 실시예 1 내지 2, 비교예 1 및 비교예 5를 통해 제조된 스케일 및 녹 세정용 조성물의 녹제거 효율을 측정하여 아래 도 7 내지 도 8에 나타내었다.In addition, the rust removal efficiency of the scale and rust cleaning composition prepared through the above Examples 1 to 2, Comparative Example 1 and Comparative Example 5 is shown in Figures 7 to 8 below.

(단, 스케일 및 녹 세정용 조성물의 녹제거 효율은 녹이 발생한 원형 강판을 스케일 및 녹 세정용 조성물이 담긴 1000ml의 비이커에 침지하기 전과 침지한 후에 상태를 촬영하여 나타내었다.)(However, the rust removal efficiency of the scale and rust cleaning composition was shown by photographing the state of the circular steel sheet on which rust occurred before and after immersion in a 1000 ml beaker containing the scale and rust cleaning composition.)

아래 도 7 내지 도 8에 나타낸 것처럼, 본 발명의 실시예 2을 통해 제조된 스케일 및 녹 세정용 조성물의 녹 제거 효율이 가장 우수하였으며, 에틸렌디아민테트라아세트산의 농도가 동일한 경우에는 pH가 4일 때, 녹 세정 효율이 더욱 향상되는 것을 알 수 있다.
As shown in Figure 7 to 8 below, the rust removal efficiency of the scale and rust cleaning composition prepared in Example 2 of the present invention was the best, when the concentration of ethylenediaminetetraacetic acid is the same when the pH is 4 It can be seen that the rust cleaning efficiency is further improved.

따라서, 본 발명에 따른 스케일 및 녹 세정용 조성물은 열교환기, 보일러 및 냉각 탑 등의 가동을 중단하지 않고 배관에서 발생한 스케일 및 녹을 세정할 수 있으며, 배관의 부식을 최소화하는 탁월한 효과를 나타내며, pH가 4 내지 7.5를 나타내기 때문에 스케일 및 녹의 세정과정에서 오염물질의 방출이 최소화되고, 배관의 표면에 부동태화 막을 형성하는 효과를 나타낸다.Therefore, the scale and rust cleaning composition according to the present invention can clean the scale and rust generated in the pipe without interrupting the operation of the heat exchanger, boiler and cooling tower, etc., exhibits an excellent effect of minimizing the corrosion of the pipe, pH Represents 4 to 7.5, minimizing the emission of contaminants during the scale and rust cleaning process, and has the effect of forming a passivation film on the surface of the pipe.

Claims (5)

정제수, 에틸렌디아민테트라아세트산, 암모니아수, 부식억제제, 소포제 및 산도조절제로 이루어지는 것을 특징으로 하는 스케일 및 녹 세정용 조성물.
A scale and rust cleaning composition comprising purified water, ethylenediaminetetraacetic acid, ammonia water, a corrosion inhibitor, an antifoaming agent and an acidity regulator.
청구항 1에 있어서,
상기 녹 세정용 조성물은 정제수 100 중량부, 에틸렌디아민테트라아세트산 90 내지 95 중량부, 암모니아수 40 내지 60 중량부, 부식억제제 0.0025 내지 0.25 중량부, 소포제 0.00025 내지 0.0025 중량부 및 산도조절제 0.01 내지 0.1 중량부로 이루어지는 것을 특징으로 하는 스케일 및 녹 세정용 조성물.
The method according to claim 1,
The rust cleaning composition is 100 parts by weight of purified water, 90 to 95 parts by weight of ethylenediaminetetraacetic acid, 40 to 60 parts by weight of ammonia, 0.0025 to 0.25 parts by weight of corrosion inhibitor, 0.00025 to 0.0025 parts by weight of antifoaming agent and 0.01 to 0.1 parts by weight of acidity regulator. Scale and rust cleaning composition, characterized in that made.
청구항 1 또는 2에 있어서,
상기 부식억제제는 소듐 몰리브데이트, 소듐 나이트라이트, 1,2,3-벤조트리아졸, 피롤리돈 및 알킬아민으로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 스케일 및 녹 세정용 조성물.
The method according to claim 1 or 2,
The corrosion inhibitor comprises at least one selected from the group consisting of sodium molybdate, sodium nitrite, 1,2,3-benzotriazole, pyrrolidone and alkylamine.
청구항 1에 있어서,
상기 소포제는 디메칠폴리실록산으로 이루어지는 것을 특징으로 하는 스케일 및 녹 세정용 조성물.
The method according to claim 1,
The antifoaming agent is a scale and rust cleaning composition, characterized in that consisting of dimethyl polysiloxane.
청구항 1에 있어서,
상기 산도조절제는 아스코르브산으로 이루어지는 것을 특징으로 하는 스케일 및 녹 세정용 조성물.The method according to claim 1,
The acidity regulator is a scale and rust cleaning composition, characterized in that consisting of ascorbic acid.
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CN112342548A (en) * 2020-11-12 2021-02-09 江苏和达电子科技有限公司 Copper-containing laminated etching solution, etching method and application thereof
WO2024045630A1 (en) * 2022-08-31 2024-03-07 西安热工研究院有限公司 Chemical cleaning solution for boiler under oxygenated treatment condition and cleaning process

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KR102313788B1 (en) 2021-08-31 2021-10-15 이창백 Detergent Composition for removing Scale and Rust of Heat Exchanger

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MXPA01011087A (en) * 1999-05-03 2002-06-04 Betzdearborn Inc Method and composition for inhibiting corrosion in aqueous systems.
JP2011132381A (en) * 2009-12-25 2011-07-07 Lion Corp Cleaner for metal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112342548A (en) * 2020-11-12 2021-02-09 江苏和达电子科技有限公司 Copper-containing laminated etching solution, etching method and application thereof
CN112342548B (en) * 2020-11-12 2022-03-15 江苏和达电子科技有限公司 Copper-containing laminated etching solution, etching method and application thereof
WO2024045630A1 (en) * 2022-08-31 2024-03-07 西安热工研究院有限公司 Chemical cleaning solution for boiler under oxygenated treatment condition and cleaning process

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