JPH0242534B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides products made of multi-component liquids containing multiple types of liquids with different ingredients, such as various cleaning agents, finishing agents, cosmetics, foods, and chemicals. It relates to a method of blending multiple types of liquids with different components during production.

[Conventional technology]

When manufacturing a product consisting of multi-component liquids by blending multiple types of liquids with different ingredients, a batch blending method is used in which multiple types of liquids with different ingredients are sequentially introduced from the top of the mixing tank and stirred to produce the product. , supplying multiple types of liquids with different components to the circulation system of the compound,
Continuous type where products are produced by stirring in the line or in a blending tank, or a header is assembled in front of an in-line mixer (or static mixer) and multiple types of liquids with different components are supplied there and products are produced on the line. (Continuous system) blending method is adopted.

For example, when formulating synthetic detergents, as described in Japanese Patent Publication No. 59-17159, an external circulation device is installed in the mixing tank, and the amount of retained liquid is relatively increased so that the composition changes over time. It is common to prevent this from happening.

[Problem that the invention seeks to solve]

However, the above-mentioned batch compounding method requires large-capacity compounding equipment and product storage tanks.

In addition, in the above-mentioned continuous blending method, due to the need to fill the blending system with water or product at the start of blending, and timing shifts due to differences in residence time in the header, it is necessary to Therefore, it is necessary to cut off the product until it meets the specifications.
A large capacity buffer system is required that can buffer this compositional variation with or without product loss.

In any case, in conventional methods, it takes time to homogenize the composition (structure) in the system (for example, 30 minutes or more in the case of liquid cleaning agents), so it is necessary to set the specified composition from the beginning of operation. There were problems such as it was extremely difficult to remove the product.

Therefore, an object of the present invention is to provide a novel method for blending multi-component liquids that can obtain a prescribed blending composition from the initial stage of operation.

[Means for solving problems]

The present invention provides a lower side surface of a mixing tank having agitating blades fixed vertically apart from each other at at least two locations in the lower part of the tank of a rotating shaft vertically disposed in the center of the tank, and Five or more liquid supply ports, which are opened and closed on the lower side surface, are provided at corresponding positions between the two stirring blades, facing between the two stirring blades, and each of them can supply multiple types of liquids having different components. Starting from each supply port at the same time, by stirring and mixing the supplied multiple types of liquids with the stirring blade, the multi-component liquid consisting of multiple types of liquids is mixed before the mixing tank is filled with the multi-component liquid. The above object has been achieved by providing a method for blending multi-component liquids, which is characterized in that the liquid composition is made uniform, and a prescribed blending composition can be obtained from the initial stage of operation. Of course, the method of the present invention is also effective when the operation is stopped midway and restarted, and a uniform composition can be obtained immediately after restarting.

Hereinafter, a method for blending a multi-component liquid according to the present invention will be explained with reference to the drawings.

1 to 3 schematically show an example of an apparatus used in the method of blending multicomponent liquids of the present invention. In these drawings, 1 is a mixing tank;
Stirring blades 2, 2... are provided inside the mixing tank 1, and 5 or more, usually 5 to 20, liquid supply ports 3, 3... are provided on the lower side of the mixing tank 1, and the upper side or upper part of the mixing tank 1 is provided with 5 or more, usually 5 to 20, liquid supply ports 3, 3... A multi-component liquid take-out pipe 4 is provided at the bottom of the mixing tank 1, and a drain port 5 is provided at the bottom of the mixing tank 1. In the case of the illustrated example, the liquid supply ports 3, 3, . In addition, the stirring blades 2, 2... are the motor 6
The rotating shaft 7, which is rotationally driven by The reason why the stirring blades 2, 2 and the liquid supply ports 3, 3, which are facing the..., are provided as described above is to improve the mixing effect of the raw materials supplied from the supply ports 3, 3... The number and installation form of the stirring blades and liquid supply ports are such that the stirring blades are fixed at least in two places at the bottom of the tank with an interval in the vertical direction, and the liquid supply port is fixed to the mixing tank above. It suffices if it is provided at a position corresponding to the lower side surface of the stirring blade between the two stirring blades and facing between the two stirring blades. In addition, the liquid supply ports 3, 3... are connected to the mixing tank 1.
It is configured to be opened and closed on the lower side surface of the mixing tank 1, so that no liquid remains between the mixing tank 1 and the valve that opens and closes the liquid supply ports 3, 3. or,
8, 8... are the respective liquid supply ports 3, 3...
The raw material supply pipes 9, 9, which supply multiple types of liquids with different components, respectively, are liquid supply ports 3, 3.
This is an actuator that simultaneously starts and stops the supply of multiple types of liquids with different components from ...... using an electromagnetic valve or a fluid-operated valve.

In order to implement the multi-component liquid blending method of the present invention using the above-mentioned apparatus, a plurality of liquids having different components are supplied to the mixing tank 1 through the respective supply ports 3, 3, . . . It is sufficient to start simultaneously from ... and stir and mix the supplied plural types of liquids with the lower stirring blades 2, 2. As a result, the multi-component liquid consisting of the plural types of liquids is mixed before the mixing tank 1 is filled. Equalized. It goes without saying that the amount of liquid supplied from each supply port 3, 3, . . . is set to the blending ratio of the desired multi-component liquid. At this time, small amounts of components and solid components are supplied as aqueous solutions or dispersions of appropriate concentrations. Further, depending on the purpose, only water may be supplied from one liquid supply port.
In addition, liquids with different components are supplied from the respective supply ports 3, 3, etc., but even if the liquids have the same components, they are not completely the same, for example, those with different concentrations may be supplied with different liquids. Can be fed by mouth.

A preferred embodiment of the method for blending multi-component liquids of the present invention will be described below. As its capacity has an average residence time of 10 seconds to 20 minutes, preferably
It is appropriate to use one for 20 seconds to 5 minutes.
Further, it is preferable that the liquid supply ports be arranged at a height within 30 cm from the bottom of the mixing tank, and it is more preferable that the liquid supply ports be arranged at substantially the same height and arranged radially at substantially equal intervals.
Further, the diameter of the liquid supply port, the liquid supply pressure from the liquid supply port, etc. can be appropriately selected depending on the desired blending ratio of the multi-component liquid. In addition, the stirring blades provided at the bottom of the tank are arranged at positions as shown in Fig. 2 with respect to the liquid supply port. It is preferable that the stirring blade is of a dispersion type or a combination thereof, and that the shape of the stirring blade other than that is a pitched turbine, a propeller, or a combination thereof. Further, the rotational speed is preferably such that the tip speed of the lower stirring blade is 2 to 15 m/sec.

〔Example〕

Next, examples will be given to specifically explain the method of blending the multi-component liquid of the present invention.

Example 1 Using the following mixing tank with the structure shown in Figures 1 to 3 (however, the number of stirring blades was 3), liquids with different components were supplied from seven liquid supply ports, and the following mixture was prepared. A kitchen liquid synthetic detergent consisting of multi-component liquids was continuously produced at a rate of 100 kg/hr.
Incidentally, small amounts of components and solid components were supplied as aqueous solutions or dispersions of appropriate concentrations. The results are shown in FIG.

From the results shown in FIG. 4, it can be seen that according to the multi-component liquid blending method of the present invention, a product having the specified pH and viscosity can be obtained within just one minute after the start of operation.

In addition, according to the conventional method, a product having the specified pH and viscosity could not be taken out until 30 minutes or more had passed after the start of operation.

(Mixing tank) - Height of the mixing tank: 28cm - Capacity of the mixing tank: 3.3 - Inner diameter of the bottom of the mixing tank: 13.4cm - Type and installation position (height) of stirring blades - Bottom: pitched turbine, Installed at a height of 1.5 cm from the bottom of the side of the mixing tank / 2nd from the bottom; dispersion type, 1
Installed 6 cm above the bottom stirring blade ・Top: Propeller ・Speed of stirring blade: 1750r.pm ・Installation position (height) of each liquid supply port (center): From the bottom of the side of the mixing tank 4cm above (multi-component liquid) - Alkyl ether sulfate 18% by weight - Tertiary amine oxide 3% by weight - Coconut fatty acid diethanolamide 3% by weight - Sodium paratoluenesulfonate 2% by weight - Sodium octenyl succinate 0.5% by weight - Ethanol 3 Weight % - Water Balance Example 2 Using a mixing tank with the same structure as in Example 1, liquids with different components were supplied from nine liquid supply ports, and 100% of the rinse consisting of the multi-component liquid with the following composition was applied.
It was produced continuously at a ratio of Kg/Hr. Incidentally, small amounts of components and solid components were supplied as aqueous solutions or dispersions of appropriate concentrations. The results are shown in FIG.

From the results shown in FIG. 5, it can be seen that according to the multi-component liquid blending method of the present invention, a product having a viscosity meeting the specifications can be obtained in just 3 minutes after the start of operation.

In addition, according to the conventional method (filling the pre-loading system with the product), it was not possible to take out the product having the viscosity according to the specifications until more than 10 minutes had passed after the start of operation.

(Multi-component liquid) Distearyldimethylammonium chloride
1% by weight Acetyltrimethylammonium chloride
3% by weight - Monoglyceride 1% by weight - Setanol 3% by weight - Propylene glycol 5% by weight - Hydroxyethyl cellulose 0.5% by weight - Citric acid 0.1% by weight - Methylparaben 0.1% by weight - Water balance [Effects of the invention] Multi-component liquid of the present invention The compounding method allows for simultaneous supply and instant mixing of five or more liquids with different components, making it possible to obtain a specified compounding composition from the beginning of operation.Therefore, there is no need to trim off any ends, and the buffer system can be minimized. Furthermore, the mixing equipment can be made smaller and the installation area of the mixing equipment can be reduced.In addition, the amount of contamination when changing products can be reduced by minimizing and simplifying the mixing equipment. There is no risk of contamination of different types of raw materials, and the mixing effect of two or more types of raw materials is high.A raw material header can be omitted, and there is no stagnation in the mixing tank. Combined with other effects such as the ability to minimize the amount and facilitate sterilization work, it is extremely valuable.

[Brief explanation of the drawing]

FIG. 1 is a side view schematically showing an example of an apparatus used for carrying out the present invention, FIG. 2 is an enlarged view schematically showing the main parts thereof, and FIG. 3 is an enlarged plan view schematically showing the main parts of FIG. 4 is a graph showing the results of one embodiment of the present invention, and FIG. 5 is a graph showing the results of another embodiment of the present invention. 1... Mixing tank, 2... Stirring blade, 3... Liquid supply port.

Claims (1)

[Scope of Claims] 1. A lower side surface of a mixing tank having stirring blades fixed vertically at intervals at at least two locations in the lower part of the tank of a rotating shaft vertically arranged in the center of the tank. And at the corresponding position between the above two stirring blades,
Five or more liquid supply ports, which are opened and closed on the lower side surface, are provided between the two stirring blades, and the supply of multiple types of liquids, each having a different component, is started simultaneously from each of the supply ports. The multi-component liquid made up of the plurality of liquids is homogenized by stirring and mixing the plurality of liquids with the stirring blade before the multi-component liquid is filled into the mixing tank. A method for blending multi-component liquids. 2. The method for blending multi-component liquids according to claim 1, wherein the liquid supply ports are provided radially on the lower side of the mixing tank. 3. A method for blending multi-component liquids according to claim 1 or 2, wherein the supply of a plurality of liquids having different components is simultaneously started and stopped using an electromagnetic valve or a fluid-operated valve.