SU1437066A1 - Apparatus for mixing and dispersing liquids - Google Patents

Abstract

The invention relates to devices for physicochemical processes in suspensions and pulps and can be used in the treatment of liquid media. Its use will improve the efficiency of mixing and dispersing liquids. The device includes a housing, in the mixing chamber of which there are mounted upper and lower conical disks made with holes, as well as a cylinder having openings between the disks with the possibility of vertical movement, and a perforated cavity that extends along the axis of the lower disk is located. The conical disks are set at an angle of 2-4 °. The distance of the upper base of the cylinder from the lower base of the upper disk does not exceed 20-50 b of the cylinder, where b is the thickness of the cylinder, mm. 2 hp f-ly, 4 ill.

Description

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The invention relates to devices for the intensification of physicomechanical processes in suspensions and pulps and can be used in the treatment of liquid media, such as aqueous solutions and suspensions, with various reagents or surfactants, during acid treatment of the formation with the aim of increasing the injectivity of the well, oil drilling to gas wells, in the chemical, food industries, in order to obtain a homogeneous physical and mechanical properties of the mass.

The aim of the invention is to increase the efficiency of mixing and dispersing liquids when entering the process.

FIG. Figure 1 shows schematically a device for mixing and dispersing liquids, open, in Fig. 2 - crg-.rsss A - A in FIG. I with side and top view; in fig. 3 shows a section BB in FIG. 1 with vie /:, side and top; in fig. 4 - upper crown:; ical disk in two projections, view ceepxv and side.

The device consists of a mixing cell 1, a feeding funnel 2 with a nozzle L aFal 3, inlet pipes 4, an upper conical disk 5, a cylinder 6, an output pipe 7, a lower conical disk 8, a resonator 9 with 10 holes on its surface.

The lower conical disk 8, the upper disk 5 and the cylinder 6 are made with corresponding holes 11, 12, and 13. For self-aniling of liquid from the outer (top) surface of disks 5 and 8, the latter are made with a taper angle of 2-4 °. In the di-resonator 9 there is an overturned 14 with openings 15 for the mixtures to enter the preparatory column 16.

The device works as follows.

Suppose that it is necessary to effectively mix and disperse two liquids: technical water and hydrochloric acid solution in a ratio of 80:20, respectively. The process water enters by pressure through the feeding funnel 2, where it passes through the Laval nozzle 3 with a supercritically expanding outlet part. Here, the pipes 4 are also connected through which the hydrochloric acid solution is introduced. The diameters of the nozzles are selected to provide a percentage ratio of 80:20, or the feed rate of technical water and hydrochloric acid solution is adjusted from the above calculation. 3 due to an increase in the velocity of the fluid, the pressure drops below the pressure of the saturated vapors, therefore air bubbles are released from the medium, which fall under the stream of hydrochloric acid solution coming out of the nozzle 4, are trapped and

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with a stream and technical water, they are carried away, fall onto a conical disk 5 with holes 12, try to pass through holes 12, making room for a new portion of liquid.

Passing through the holes 12, the mixed and pre-dispersed liquid, hitting the cylinder 0, located at a distance of 20-50 b from the disk 5, passes through the holes 13 made in the cylinder

6, and then directed to a conical disk 8 with holes 11. Well mixed and sufficiently dispersed (as you pass: through the holes from dmax TO., Where tad Qmr n is the maximum and minimum size of the holes on the conical disk 5 and 1, The cylinder 6), the liquid is directed to the disk 8, de-rushes to the cavity 9 with the opening-; m ;; 10. C. The mixture, the passage from a certain air outlet through the hole 10, causes the air bubbles released in the resonator 9 to collapse and a cavitation occurs in the zone of the tilted cone 14.

The presence of the cavitation effect resulting from the impact of a shock wave (the fluid repeatedly hits the conical disk, cylinder and conical disk installed in the lower part of the device) leads to the fact that a discharged cone leaves the tilted cone 14 through apertures 15. (s. mixed) liquid that goes through the outlet nozzle 7 out of the device and is sent to a preparatory column 16 for treating it with a prepared solution of hydrochloric acid until the injectivity of the well reaches 5--10 at a pressure of 1 0 kgf / cm.

An analysis of experimental studies shows that the following optimal parameters of the device must be met for mixing and dispersing liquids.

1. The angle of taper of the disk 5 is in the range of 2-4 °, while achieving the best displacement and dispersion of liquids. So, for example, at a taper angle of 2 °, the mixing efficiency (E) of two liquids (technical water and diesel fuel) reaches 43.5 / o%, the dispersion efficiency (Ed) of diesel fuel in process water is 67%. At a taper angle of 3 and 4 °, these parameters vary somewhat, but remain at the level of 45-65% and 68-69%, while at a taper angle of more than 5 ° they decrease.

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2. The distance between the conical disks 5.8 and the cylinder 6 is 20-50 6 and varies depending on the mode of operation of the device. For example, at a distance between the conical disk and the cylinder 5 b e. 38%,, at a distance of 20 b,, at a distance of 50 b es; 91.0%, 9%, with increasing distance between the cone-shaped disk and the cylinder to 55 or 60 b change

Es and Ed and respectively are 79.2 and 63.5 and 71.3 and 62.3%.

3. The diameter of the holes (с1 „";) is 4.5-5.0 mm, since with decreasing or

The proposed device uses the energy of a moving fluid; tests showed its efficiency and manufacturability, the possibility of a more rational increase of it immediately change es. and E is to use a mixing liquid at its minimum value at mm and 25 mm.

4. The angle of taper of the disk 8 is 2-4 °, since this achieves optimal mixing efficiency (E 61.5-70.1%) and dispersion efficiency (Ed 67-72.3%).

Optimally selected device parameters determine the oscillatory mode of motion of the resonator 9, the latter oscillates with frequency

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bones when making them into the process.

Claims (3)

Invention Formula I. A device for mixing and dispersing liquids, containing a mixing chamber, supply and discharge connections, and a feeding funnel with a Laval nozzle, characterized in that, in order to improve the efficiency of the displacement and dispersion of liquids, the device is equipped with in the mixing chamber, the upper and lower conical discs, made with holes, are located along the axis of the lower disc, extending along fV 4ёts (0,44-Н) (0,6-0,2Н): The proposed device uses the energy of a moving fluid; tests showed its efficiency and manufacturability, the ability to more efficiently use mixing liquid bones when making them into the process. Invention Formula I. A device for mixing and dispersing liquids, containing a mixing chamber, supply and discharge connections, and a feed funnel with a Laval nozzle, characterized in that, in order to improve the efficiency of the displacement and dispersion of liquids, the device is equipped with the mixing chamber with the upper and lower conical disks, made with holes, located along the axis of the lower disk, extending along where V is the speed of fluid movement between the -, Q motion of the perforated resonance disk (m / s); du, - diameter of the cylinder, m; H-- the ratio of the height of the holes h made on the cylinder to their diameter d; . about - thickness of the cylinder, mm. In relation to the given parameters of the device, the oscillations of the resonator 9 bear the character of stable oscillations with a frequency torus and mounted between the disks with the possibility of vertical movement of the cylinder, made with holes. 2. The device according to claim 1, characterized in that, for the purpose of spontaneous outflow of fluid, the angle of taper of the disks is 2-4 °. 3. The device according to paragraphs. 1 and 2, distinguished by that the distance of the upper base of the cylinder from the lower base of the upper D1i f 36-75 Hz, favorably influencing the change in the dispersion of the spray of the liquid and -JQ exceeds 20-50 b, where the displacement efficiency .b is the thickness of the cylinder, mm G5 torus and mounted between the disks with the possibility of vertical movement of the cylinder, made with holes. 2. The device according to claim 1, characterized in that, for the purpose of spontaneous outflow of fluid, the angle of taper of the disks is 2-4 °. 3. The device according to paragraphs. 1 and 2, distinguished by that the distance of the upper base of the cylinder from the lower base of the upper D1i   exceeds 20-50 b, where b is the cylinder thickness, mm v H) -6 -13 - 73 77 Fig.Z