JP4699506B2 - Method for producing aqueous detergent - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention manufactures an inorganic water-based cleaning agent considering environmental measures such as VOC and CO ₂ measures that do not contain any organic matter such as a surfactant intended to be used for degreasing cleaning of processed products such as automobiles, home appliances, and electronic industries. Regarding the method.

  Conventionally, as an inorganic detergent, a composition of a detergent mainly composed of sodium metasilicate, potassium carbonate, sodium borate, and sodium sulfate is known. A method for producing the composition of this cleaning agent is to add a proper amount of sodium metasilicate, potassium carbonate, sodium borate, sodium sulfate, and the like to water at a temperature of 50 to 80 ° C. Is generally known to be effective.

  On the other hand, salts and sodium metasilicate are added to the raw water to form an electrolyte solution, and air temperature (microbubbles) is generated in the electrolyte solution, and at the same time the temperature is adjusted to 15 to 20 ° C. from the viewpoint of maintaining solubility. There are a method and a cleaning agent for producing a solution containing ultrafine bubbles by taking a step of crushing bubbles with ultrasonic waves using an apparatus over 2 hours.

However, in the above-mentioned inorganic detergent composition, no cleaning effect is observed, but particles of the additive sodium metasilicate (40 to 50 microns) in the commercialized solution are present. At present, there is a demand for further improvement in order to obtain a long-term stable quality of the product due to being too large, a problem of stains generated after degreasing and cleaning, and an excellent rust prevention ability.
Patent 4064977 (9 pages)

  The present invention solves the above-mentioned problems, and produces an aqueous cleaning agent to obtain a long-term stable quality of the product and a problem of stains generated after degreasing and excellent rust-preventing power with low environmental impact. The purpose is to find a way to solve the problem.

Invention for solving the above problems, the pure water as the raw water, this raw water with the addition of silicic acid disodium Kyumizu sum was an electrolyte solution, ultrasonic simultaneously continuously feeding nitrogen gas into the electrolyte solution performs the step of crushing the bubble 30 minutes or more, then step in adding higher pressure into particles of silicic acid disodium Kyumizu sum of minerals contained in the liquid product fine砕化, a homogenizer is a machine for homogenizing By using this method to produce a solution containing ultrafine bubbles (5 microns), the above-mentioned production method and long-term stable quality of the product, as well as the problem of stains generated after degreasing and excellent rust prevention ability are achieved. It is an aqueous cleaning agent characterized by being obtained.

In claim 1, disodium silicate nonahydrate is added to pure water to form an electrolyte solution, and nitrogen gas is continuously fed into the electrolyte solution, and at the same time, bubbles are crushed by ultrasonic to produce a solution containing fine bubbles. For 30 minutes or more, and after that, using a homogenizer, a machine that applies high pressure to the particles of inorganic disodium silicate nonahydrate contained in the liquid product and pulverizes and homogenizes it. A method for producing an aqueous cleaning agent, comprising at least a step of producing a solution containing fine bubbles .

  As in the first aspect of the invention, in the second aspect, the amount of disodium silicate nonahydrate added is 10 to 90 mmol%.

Next, in Claim 3 , it is obtained by the manufacturing method of the aqueous cleaning agent of Claim 1 or 2 , The aqueous cleaning agent characterized by the above-mentioned.

According to the present invention, in pure water was added silicate Disodium Kyumizu sum was an electrolyte solution, a step of crushing the bubble by ultrasonic at the same time continues to send nitrogen gas to the electrolyte solution 30 minutes or more is performed , then step in adding higher pressure into particles of silicic acid disodium Kyumizu sum of minerals contained in the liquid product fine砕化, the ultrafine bubbles (5 microns) using a homogenizer is a machine for homogenizing by producing a solution containing, long-term stable quality and problem solving and excellent rust prevention of stain that occurs after degreasing of inorganic aqueous detergent that a main agent and silicate disodium Kyumizu sum thereof A method for producing the resulting aqueous detergent is provided.

The present invention, as shown in FIG. 1, the pure water by the addition of silicic acid disodium Kyumizu sum was an electrolyte solution, the step of crushing the bubble by ultrasonic at the same time continues to send nitrogen gas to the electrolyte solution carried out for 30 minutes or more, then step in adding higher pressure into particles of silicic acid disodium Kyumizu sum of minerals contained in the liquid product fine砕化, ultrafine bubbles using a homogenizer is a machine that homogenization ( And at least a step of producing a solution containing 5 microns).

  The raw water used in the present invention is, for example, pure water obtained by using a reverse osmosis membrane water purifier NK-ML1 (manufactured by Nikken).

Silicate Disodium Kyumizu sum was used in the present invention, together with the electrolyte solution raw water, which functions as a component of the detergency and rust prevention, the electrolytic solution nonahydrate Among belonging to sodium metasilicate Has the property of being most easily dissolved in raw water. The amount of the silicate Disodium Kyumizu sum thereof is preferably a 10 to 90 mmol% based on the total amount, in general, to 50 mmol% or so in consideration of the safety surface alkalinity It is preferable.

In the method of manufacturing of the present invention, the raw water to silicate disodium Kyumizu sum of pure water was added in the preferred range as described above, make stirring electrolytic solution necessary, sends a nitrogen gas to the electrolyte solution continuing at the same time performs a step of crushing the bubble 30 minutes or more by an ultrasonic oscillator, then step in adding higher pressure into particles of silicic acid disodium Kyumizu sum of minerals contained in the liquid product fine砕化, homogeneous A solution containing ultrafine bubbles (5 microns) is produced using a homogenizer which is a machine to be converted.

  In addition, as an ultrasonic oscillator, for example, by using a high-voltage ST transistor in US-12B (manufactured by US Mec Co., Ltd.) provided with an ultrasonic vibrator that irradiates ultrasonic waves and a sub-split plate type vibrator. It is highly efficient, lightweight and compact, and has a function of adjusting the resonance frequency and output power of the vibrator and is easy to use. The frequency of the irradiated ultrasonic wave is preferably around 30 KHz.

In the production method of the present invention, from the point of further exerting the effect of the present invention, when a bubble generation method using air as a bubble generator is used, a large amount of oxygen (O ₂ ) in the air is contained in the electrolyte solution. Since the electrolyte solution is easily oxidatively deteriorated because it is blown in, it becomes an unstable factor in terms of long-term quality stability of the product, and in order to clear the factor, a process of crushing bubbles by ultrasonic waves while continuing to send nitrogen gas is performed 30 min conducted above, then fine adding high pressure into particles of silicic acid disodium Kyumizu sum of minerals contained in the liquid product in step砕化, ultrafine bubbles using a homogenizer is a machine for homogenizing (5 by producing a solution containing microns), after long-term stable quality and degreasing cleaning of inorganic aqueous detergent that a main agent and silicate disodium Kyumizu sum thereof It can produce an aqueous cleaning agent to obtain a problem-solving and excellent rust prevention of stains that live.

In order to enhance the effect of the present invention, it is preferable to carry out the step of crushing bubbles by ultrasonic waves at the same time that the above-mentioned nitrogen gas is continuously fed, and the inorganic silica contained in the liquid product in the subsequent step. process of producing the particles of disodium Kyumizu sum was added with high pressure fine砕化, a solution containing a machine in which a homogenizer ultrafine bubbles (5 microns) to homogenization and 1 hour before and after Preferably, the temperature of the raw water (electrolyte solution) during these steps may be ordinary temperature throughout the year.

Thus, lysates made silicic acid disodium Kyumizu sum Mono含 Yes, it was confirmed that alkalinity (pH) is 12.8 to 13.2. This reference value is shown as a strongly alkaline aqueous cleaning agent.

  The produced solution is transferred to a product storage tank through a filtration filter, and is subdivided into a predetermined amount of an inorganic aqueous cleaning agent from the product storage tank.

Embodiment 1
An embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the manufacturing method of the present invention removes insoluble impurities and residual chlorine by being supplied to a reverse osmosis membrane water purification device 3 via a regulating valve 2 of raw water (tap water) 1. It is injected into the dissolution tank 15 in a batch format. The raw water in the dissolving tank 15, silicate disodium Kyumizu sum was sub morphism plate vibrator frequency 30KHz ultrasonic oscillator 4 while at the same time continue to send nitrogen gas 8 and stirred as required by adding 50 mmol% The process of conducting bubbles to 5 and crushing bubbles is performed for about 30 minutes. Further, in the transfer pump 10, then step in the feed by adding a high pressure to the particles of silicic acid disodium Kyumizu sum of minerals contained in the liquid product fine砕化, the homogenizer 12 is a machine for homogenizing greater process for producing a solution containing fine bubbles (5 microns) is one hour before and after. The temperature of the raw water (electrolyte solution) during these steps may be room temperature throughout the year. The aqueous cleaning agent thus prepared is measured for alkalinity (pH), checked to a predetermined reference value, and subdivided into inorganic aqueous cleaning agents to obtain products.

The inorganic water-based cleaning agent produced by the method of the present invention does not contain any organic substances such as surfactants that are diluted to 1 to 30% and used for degreasing cleaning of processed products such as automobiles, home appliances, and electronic industries. Not. In addition, this aqueous detergent has excellent detergency, no foaming, strong rust prevention, good oil / water separation, easy waste liquid treatment after use, long-term stable quality and degreasing cleaning It is an inorganic water-based cleaning agent that solves the problem of stains that occur later. In addition, it is possible to provide an inorganic water-based cleaning agent that is easy to handle and highly safe in consideration of environmental measures such as VOC and CO ₂ countermeasures, which are one cause of global warming.

Schematic of the manufacturing process of the aqueous cleaning agent of this invention. Test table for dissolution performance with homogenizer

1. Raw water Adjustment valve Reverse osmosis membrane water purification device 4. 4. Ultrasonic oscillator Sub-split plate vibrator 6. Dissolution tank 7. Silicic acid disodium Kyumizu sum object 8. Nitrogen gas 9. Transfer valve 10. Transfer pump 11. Filtration filter 12. Homogenizer 13. Filtration filter 14. Supply valve 15. Product (cleaning agent)

Claims (3)

Pure water was added to silicic acid disodium nonahydrate and electrolyte solution, the electrolyte the solution continues to send nitrogen gas while crushing bubbles by ultrasonic simultaneously 30 minutes steps of producing a solution containing fine bubbles A solution containing ultrafine bubbles using a homogenizer that is a machine that applies high pressure to the particles of inorganic disodium silicate nonahydrate contained in the liquid product in the subsequent process, and pulverizes and homogenizes the particles. A method for producing an aqueous cleaning agent, comprising at least a step of producing   The method for producing an aqueous detergent according to claim 1, wherein the amount of disodium silicate nonahydrate added is 10 to 90 mmol%. An aqueous cleaning agent obtained by the method for producing a cleaning agent according to claim 1 or 2 .

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