SE506388C2 - Emulsion prodn. - Google Patents

Abstract

A typical compsn. of the emulsion consists of:- 24.6 wt% alkylphenolethoxylate with around 10 carbon atoms in alkyl parts and 4 mol ethylene oxide, 20.5 wt.% nonylphenolethoxylate with 9 mol ethylene oxide, 23 wt.% phenolethoxylate with 4 mol ethylene oxide, 1.2 wt.% quat. cocoa butter aminethoxylate with around 10 mol ethylene oxide, 0.4 wt.% cetyltributyl ammonium bromide, 30.3 wt.% cycloparaffin carbohydrate solvent with commencement boiling point of 157 deg. C and a flash point of 43 deg. C. 250 litres of the mixt. are mixed with 25 litres NTA soln. (38 wt.%) contg. an excess of lye of 1 to 5 wt.%. The mixt. is then diluted with cold water to form 1000 litres.

Description

A mixer according to the invention comprises a container, which can be made of any material such as metal, steel, wood, plastic, etc. The container is provided with at least one connecting device for supplying a liquid medium. The connection luminaire for the liquid medium is designed so that it can serve as a holder and storage for a stirrer. This is provided with a tubular shaft which opens into tubular channels which start from the center of the stirrer and open into the stirrer itself at a certain distance from the center. The orifices are designed and directed so that the reaction force from the outflow of the medium causes the stirrer to rotate.

The invention also applies to a stirrer intended to be mounted in an arbitrary container and designed so that it can also serve as a connection fixture for a surface medium. Furthermore, the invention relates to a method for converting simple containers such as Cl-PAX 'containers, plastic drums, sheet metal drums and more into mixers by mounting a connection luminaire as above together with another suitable fitting for supplying fl surface or solid material and removal of the finished mixture.

Figure 1 shows a computer-generated sketch of an embodiment of a mixer according to the invention. In the sketch, 1 stands for the container itself, 2 for the supply line for the pumped or pressurized medium, 3 for the stirrer itself, which in this case is a two-bladed stirrer with inclined blades, 4 stands for an outflow opening for the fl surface medium the stirrer blade and is hidden therefrom), 5 stands for a suction line for finished mixing, 6 for a valve-equipped bottom drain line, which can be used for diverting mixed product without the help of a pump or to a pump that is not self-priming. 7 is an opening accommodated in the lid for the supply of solid or surface additives.

The stirrer can be mounted in any position vertically or obliquely through one of the container walls, lids or bottom. Since the rotation takes place substantially vibration-free and at a moderate speed, the pour strength of containers of the sheet metal or plastic drum type without additional reinforcements is usually sufficient. Such containers can be seen as a disposal problem and the procedure for their conversion is therefore very interesting from a recycling point of view.

The stirrer can be two- or four-leaf and designed in a largely arbitrary manner. Of course, symmetry with respect to the center is assumed so that the rotation can take place without major imbalance.

Within the framework of this, a number of different embodiments are accommodated, such as two- or fl-blades with straight or oblique blades, disc with blades in the periphery, agitator blades placed in a spiral, etc. Two-blade agitators are generally preferred in view of their simple manufacture and ease of use. mount them even through relatively narrow openings. 506 388 The orifices of the effluent medium may be located at any distance from the center of the stirrer. Suitable placement can be at a distance of one-fifth to close to a stirrer radius from the center. The preferred distance is at least half a stirrer radius. In order to maximize the lever of the reaction force, the orifice should be placed as far away from the center as is practically possible with regard to the dimensioning of the stirrer.

The number of outflow openings can be selected arbitrarily. Generally, two diametrically opposite openings are preferred, but good results can be obtained with only one opening as well as three or more.

When dimensioning the outflow openings, the pressure and flow rate of the light-flowing medium must be taken into account. Wd too large openings, gravity will consider so that the force component in the horizontal direction will not be sufficient for the agitator drive.

With suitable dimensioning, relatively low pump pressures such as 0.5 to 5 bar are sufficient for the agitator drive. Ordinary tap water therefore has sufficient pressure for the drive. The direction and other design of the openings allow large variations, but in general round openings directed approximately in the direction of the key are preferred.

When converting a container to a mixer of this type, a hole is first made in the container lid, if no such hole exists. The hole, which in the future serves as an opening for the addition of solid or surface additives, is made large enough for assembly of other details to take place without difficulty.

Claims (1)

1,506,388 Patent claims Mixer consisting of a container and a stirrer mounted therein characterized in that the stirrer serves as a fitting for supplying to the mixer a pumped or otherwise pressurized liquid medium and is driven by the reaction force from the outflow of this medium into the container. Mixer according to claim 1, characterized in that the stirrer is provided with a tubular shaft whose tube branches to the stirrer and opens so that outflow takes place through at least one opening located at a distance of at least 1 quarter of the stirring radius from the center of the stirrer. Agitator intended for mounting in a container characterized in that the agitator serves as a fitting for supplying to the mixer a pumped or otherwise pressurized medium and is driven by the reaction force from the outflow of this medium into the container. Agitator according to claim 3, characterized in that the agitator is provided with a tubular shaft whose tube adjoins the agitator and opens so that outflow takes place through at least one opening located at a distance of at least 1 fifth of the agitator radius from the agitator center. Methods of converting transport containers to mixers are characterized by taking up the required openings in the container and then mounting a stirrer which serves as a fitting for supplying a pumped or otherwise pressurized surface medium and is driven by the reaction force from the outflow of this medium into the container. Use of a mixer for the preparation of an emulsion, in particular a microemulsion, including for cleaning end needles, of a self-emulsifying anhydrous or almost anhydrous premix containing one or more nonionic surfactants and one or two organic solvents, at the site of use of the emulsion characterized in that the mixer's stirrer serves as a fitting for supplying a pumped or otherwise pressurized fl surface medium and is driven by the reaction force from the outflow of this medium into the container.