JPS6316439B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a cleaning agent, and its objects are as follows. (a) To reduce the enormous capital investment required for raw material blending, drying, etc. in the current manufacturing of powdered detergents; (b) To reduce the pollution that is unavoidable in the current manufacturing process, that is, (a) To reduce the amount of pollution caused by scattering during the spraying process. (b) Preventing the scattering of fuel soot generated during the drying process; (c) Preventing the waste of the huge amount of fuel required for drying (approximately 10% of the production amount); (d) (e) To improve the practicality of natural oil-based powder detergents, which have difficulty drying due to their molecular structure. As a result of extensive research to achieve this objective, the present inventor succeeded in producing a cleaning product at high speed with an incomparable amount of energy compared to the conventional method, and completed the present invention. That is, the method of the invention comprises a horizontal stirring blade rotating about a vertical axis at the bottom, a cross foil rotating about a horizontal axis at the side wall,
In a cylindrical reaction tank with a conical surface with a curvature of 5 to 30 degrees at the top, soda ash is the main ingredient, and nonionic surfactants or nonionic surfactants, which account for more than 40% of the total, are placed in a cylindrical reaction tank. This method of manufacturing a cleaning agent is characterized by charging a mixture of anionic surfactants and reacting the mixture while vigorously stirring the mixture using blades and cross foils at different rotational speeds. To explain this in more detail below, the components constituting the cleaning agent of the present invention include soda ash as a builder and a nonionic surfactant or a nonionic and anionic surfactant as an active ingredient. Therefore, soda ash accounts for more than 50% of the total detergent, and in many cases it accounts for 70-85%, and this makes it possible to demonstrate a greater cleaning effect than conventional detergents. It is clear from Tables 1 and 2 how unique this is. Table-1 Conventional synthetic detergents (Keizo Ogino, "Knowledge of Synthetic Detergents") Ingredient Content Rate Γ active ingredient 15-30% Phosphate 10-35〃 Salt 30-50〃 Sodium silicate 0-15〃 Γ Sodium carbonate 0 ~20% CMC 0.5~2.0〃 Fluorescent dye 0.1~0.4〃 Moisture 1~15〃 Table 2 An example of the cleaning agent of the present invention Component Content Gamma surfactant 7.8% 4% nonionic 3.8% anionic Γ Soda ash 79.0〃 Sodium silicate 5.0〃 CMC 0.1〃 Sequestering agent 0.1〃 Acetic acid 0.1〃 Moisture Remaining amount Soda ash used as a builder in the present invention has a cleaning ability of aqueous solution of alkylbenzene sulfonate and linear alkylbenzene sulfonate. , is similar in electrical action to that of salts such as coconut alcohol sulfate. On the other hand, nonionic surfactants have permeability and
Because it has better dissolution performance than anionic surfactants, in the present invention, either an ionic surfactant is used or a part of the anionic surfactant is replaced with soda ash, so that the amount of surfactant used can be reduced. The aim is to reduce the amount of water used and at the same time obtain a synergistic effect between the cleaning performance of soda ash and the nonionic activator. Soda ash interacts with the water contained in the active ingredient and hydrolyzes, and the heat generated at this time (approximately 80°C) accelerates the drying of the reactants and prevents a drop in pH due to oxidation of oily stains. effective. Therefore, in the present invention, the phosphates conventionally used for this purpose can be omitted. In addition to the above-mentioned components, known additives such as thickeners, enzyme agents, and metal sequestering agents may be appropriately added depending on the purpose and use. Next, the apparatus for carrying out the method of the present invention will be explained with reference to the drawings. As shown in Fig. 1, this is a cylindrical reaction tank 1 in which the upper one-third part has a conical surface with a curvature of 5 to 30 degrees. As shown in Fig. 2, the inside of it has a vertical shaft 2 at the center of the bottom, a horizontal stirring blade 3 that rotates around the shaft, and a horizontal shaft 4 on the side wall, which is fixed perpendicularly to the vertical shaft 2. , there are a plurality of cross foils (choppers) 5 that rotate around their axes. The cross foils 5 are several wing-shaped blades mounted parallel to each other across the horizontal axis. The blade 3 is a plurality of flat blades having surfaces with a depression angle of 5° to 45°, and its circumferential speed can be varied from 0.6 to 6.0 m, but a higher speed is more convenient. However, excessive circumferential speed not only confuses the scattering route but also causes energy loss, so it should be avoided. The upper part of the cylindrical reaction tank 1 is a conical surface, and the curvature is 5° to 30°, which is necessary to allow the raw material particles to rise while sliding along the curved surface from the circumferential direction and fall suddenly at the center. This is for a reason. If the reaction tank is simply cylindrical, the fluidity of the particles is poor and the amount charged is limited to 40% of the total volume, but in the present invention, by setting the curvature within the above range, it increases to 50-60%. can. If the curvature is less than 5°, the fluidity will be poor and the amount charged will decrease. Moreover, if the angle is more than 30 degrees, the falling time of the particles will be different, which will not only make steady motion difficult, but also increase the pressure applied to the rotating blade. The rotation of the blades causes a helical movement of the particles, and the depression angle of the blades creates a complex line of intersection with the wing blades of the cross foil, resulting in an excellent mixing effect in a short time. In this case, if the suppression angle is less than 5°, the particles will not be scattered in a spiral shape and the mixing efficiency will be significantly reduced, and if it is more than 45°, the particles will not be scattered.
Rather, the blades move as a group, making it difficult to form a normal line of intersection with the crosswheel, which places a large thrust load on the blade surface. When raw material coarse particles of a cleaning agent mainly composed of soda ash are put into this reaction tank 1 and the blade and cross foil are rotated, the raw material particles are moved outward by centrifugal force due to the rotation of the bottom blade. Also, due to the depression angle of the blade, it rises in a spiral shape while scattering upward. At this time, since the periphery of the tank is curved inward, the dead center on the upper surface is eliminated, a cyclic movement as shown by the arrow in FIG. 3 is performed, and the shape of the particles becomes uniform. In this way, the coarse grains are crushed by the rotation of the blade, and at the same time, because the blade has a depressed angle surface, the coarse grains themselves move radially and upwards in a kind of helical motion due to centrifugal force and rotational force. wake up in this case,
A cross foil attached to the horizontal axis diversifies the scattering lines of the powder particles, perfecting the mixing, breaking up builder nodules and secondary agglomerations (blocking), and also breaking up the obtuse angles. The contact surface allows the particles to be sized and rounded, resulting in a high-density dry cleaning agent. According to the method of the present invention, drying is carried out in the reaction tank using the heat of hydrolysis of soda ash and the heat of friction between particles, so fuel consumption, which was conventionally considered unavoidable in the production of synthetic detergents, can be eliminated. The synergistic effect of the main soda ash and the heavy use of nonionic surfactants improves cleaning performance, especially from natural vegetable oil raw materials, which have traditionally been difficult to dry and have caused profitability problems. The present invention is of great industrial value since it has become easier to manufacture powdered detergents. Example Raw materials having the following composition were prepared and charged into a reaction tank of the type shown in FIG. 2 to produce a detergent. Natural coconut alcohol sulfate 3.6% Natural coconut alcohol fatty acid amide 3.4〃 Sequestering agent 0.2〃 CMC 0.1〃 Soda ash 82.0〃 Sodium metasilicate 5.0〃 Water remaining Reactor: Capacity 25, 1 blade, repression angle 30°, Rotation speed 150 times/min 3 cross foils Rotation speed 1500
Required time from preparation to product removal: 6 minutes per minute Product particle size distribution: [Table]

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing the external appearance of an apparatus for carrying out the method of the present invention, FIG. It is an explanatory diagram of a flow. 1...Reaction tank, 2...Vertical axis, 3...Blade, 4...Horizontal axis, 5...Cross foil.

Claims (1)

[Claims] 1. A cylindrical reaction tank with a horizontal stirring blade rotating around a vertical axis at the bottom, a cross foil rotating around a horizontal axis on the side wall, and a conical surface with a curvature of 5° to 30° at the top. The main ingredient is soda ash, and a mixture of this and a nonionic surfactant or a mixture of nonionic and anionic surfactants, in which nonionic surfactants account for 40% or more of the total, is added. A method for producing a cleaning agent, characterized in that the reaction is carried out while being strongly stirred with the blade and cross foil having an elevation plane of .degree.