JP2008266562A - Detergent comprising mixture of at least four components and water, mainly for removing solid deposit from drinking-water piping - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixture comprising such several components in an aqueous solution as to be observed in the proportion among specified components, which mixture brings about at least consistently effective detergency in combination of a publicly known substance with the still unknwoun substance to an expected use and makes no attack against the inside wall of metal piping and has a high-degree adaptability to the environment and no health risk arises from the vapor which might yield, which is different from the case of a detergent containing HCl, and is manufactured by simply and inexpensively. <P>SOLUTION: The detergent comprising a mixture of at least four components and water for the purpose of removing solid deposits from drinking-water piping, is characterized by containing 1-14% by mass of a sulfamic acid, 5-10% by mass of methane sulfonic acid, 0.075-0.15% by mass of phosphonobutane-tricarboxylic acid, 0.3% by mass of 2-propanol, and a soft water in an amount necessary to come up to 100%. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention consists of a mixture of at least four components and water, with the primary purpose of removing solid deposits (iron cloggings) from drinking water piping, to which additional water is added. It relates to a cleaning agent.

  It is known that metal drinking water piping must be periodically inspected to find out why pressure fluctuations occur and the fluctuations in the water flow rate occur even if the pumping power is kept constant.

  Apart from damage due to seasonal conditions that can be repaired relatively quickly, one major problem is the reduction in the inner diameter of the drinking water piping described above. The rate at which this occurs depends on the quality of the drinking water flowing through the pipe, and it is caused by what is called "iron blockage". In currently available methods, these deposits are effectively removed using known equipment (pipe scrapers) by mechanical cleaning, ultrasonic cleaning or chemical cleaning, or by flowing a cleaning solution through the piping. It can only be removed and it causes blockage in multiple sections of the piping system.

  A suitable example is the solution proposed in DE 60016414 T2 and WO 01/42148 A1, both of which propose various combinations of known individual components in aqueous solution. Solid deposits are removed by simple means such as applying the solution and flushing away. Since these base materials are relatively expensive and expensive to apply and dispose of, alternative means to overcome these drawbacks must be sought.

  On the other hand, hydrochloric acid (HCl) is still used in concentrated form in combination with disinfectants such as hydrogen peroxide or peracetic acid. The biggest drawback of the substance mixture is that the metal pipes are very badly corroded after several years, so that the pipes must be replaced.

Thus, both the production and use of expensive substance mixtures for maintaining metal pipes in drinking water systems, i.e. for cleaning, and cleaning methods using less expensive but highly corrosive HCl. We have to look for alternative solutions to replace it. The proposed new solution aims to overcome the shortcomings of the prior art at this stage.
DE60016414 T2 WO01 / 42148 A1

  Accordingly, the object of the present invention is to combine known materials with materials that are not known for the intended use to at least consistently provide an effective cleaning action, without attacking the inner walls of metal pipes, With a high degree of compatibility, for example, without any health risks from vapors that can occur as well as cleaning agents containing HCl, and simple and inexpensive to manufacture, provided that the proportion of specified ingredients Is to come up with a mixture of several components in an aqueous solution where

  The purpose is to remove solid deposits from the drinking water piping and to mix with each other, and to comprise a homogeneous and stable mixture of at least four components and water. % Sulfamic acid, 5-10% by weight methanesulfonic acid, 0.075-0.15% by weight phosphonobutane-tricarboxylic acid, 0.3% by weight 2-propanol, and up to 100% soft water It is realized by a cleaning agent comprising a mixture of at least four components and water.

  Reference should be made to claim 1 for details of the basic concepts relevant to the present invention. Further details of the present invention are as follows. Claim 2 (In the cleaning agent comprising a mixture of at least four components according to claim 1 and water, 1 to 10% by mass of a disinfectant was added to the cleaning agent. A cleaning agent comprising a mixture of at least four components and water, characterized by having an antiseptic action, and claim 3 (from a mixture of at least four components and water according to claim 2) A cleaning agent comprising a mixture of at least four components and water, characterized in that hydrogen peroxide or a substance containing hydrogen peroxide, such as peracetic acid, is used as a disinfectant. Has been. Further details should follow how the present invention served their purpose.

  One of the cleaning solutions currently available in accordance with the prior art, HCl, has been demonstrated to be completely replaced by a preparation that fully satisfies the efficacy of removing dissolved solids. This is also true for other inorganic acids that can be used as well.

Sulfamic acid, methanesulfonic acid, phosphonic acid (phosphonobutane-tricarboxylic acid), 2-propanol and soft water remove solid deposits (iron clogs) and CaCO ₃ deposits and at the same time several individual components in aqueous solution It is a particularly suitable material for producing a detersive mixture consisting of

Mixing the above ingredients, the percentage mass shown below:
Sulfamic acid, that is, H ₃ NO ₃ S 1% to 14%
Methanesulfonic acid 5% -10%
Phosphonobutane-tricarboxylic acid, that is, C ₇ H ₁₁ O ₉ P 0.075% to 0.15%
2-propanol 0.3%
Soft water A ready-to-use solution can be formed within the limits of up to 100%.

  Accordingly, the present invention will be described with a preferred embodiment.

In this example, the mass proportions of the components described above are as follows:
Sulfamic acid 5%
Methanesulfonic acid 5%
Phosphonobutane-tricarboxylic acid 0.15%
2-propanol 3%
Soft water 89.55%
Furthermore, the cleaning agent performs an additional normal or simultaneous disinfection function by adding to it a component containing hydrogen peroxide, C ₂ H ₂ or hydrogen peroxide, eg peracetic acid. You can also. The cleaning agent may also be used to treat peripheral drinking water plants such as water storage tanks.

The advantages of the proposed cleaning agent can be summarized as follows:
The cleaning agent dissolves all known solid deposits in the drinking water piping.

  The cleaning agent destroys the biological coating.

  Does not generate chlorine gas that is harmful to health.

  The cleaning agent does not corrode the inner wall of the cracked metal or plastic pipe or ceramic pipe.

  The cleaning agent is a biodegradable and environmentally friendly product.

  The cleaning agent extends the service life of drinking water piping and other drinking water plants that need to be cleaned at defined intervals, especially metal peripheral tanks.

Claims (3)

  In a cleaning agent comprising a mixture of at least four kinds of components that can be mixed with each other, homogeneous and stable, and water for removing solid deposits from drinking water piping, the cleaning agent is 1 to 14% by mass of sulfamic acid. And 5-10 mass% methanesulfonic acid, 0.075-0.15 mass% phosphonobutane-tricarboxylic acid, 0.3 mass% 2-propanol, and up to 100% soft water. A cleaning agent comprising a mixture of at least four components and water.   The cleaning agent comprising a mixture of at least four components and water according to claim 1, wherein the cleaning agent has a disinfecting action when 1 to 10% by mass of a disinfectant is added. A cleaning agent comprising a mixture of at least four components and water.   A cleaning agent comprising a mixture of at least four components and water according to claim 2, characterized in that hydrogen peroxide or a substance containing hydrogen peroxide, such as peracetic acid, is used as a disinfectant. A detergent consisting of a mixture of seed components and water.