RU2418625C1 - Device for preparing mixes and solutions - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: inventions relates to dispersers to be used in oil industry for preparation of gas-liquid mix, i.e. foam, emulsion or suspension of required dispersion. Proposed device comprises casing, processing element arranged on core moving in said casing, and/or in casing. Various shapes and dimensions of said processing elements may be used Casing may have variable section. It is possible to vary dispersion of prepared mix or solution preparation interval by moving the core, i.e. variation is possible at constant flow rate. On the other hand, to allow constant dispersion of mix or constant rate/time of solution preparation at variable flow rates it is necessary and sufficiently to keep up constant pressure difference in said device by moving said core. If required, proposed device may be cut off without interrupting feed of mixed components.

EFFECT: possibility to vary dispersion and control rate/time of dissolution without varying flow rate.

3 cl, 13 dwg

Description

The invention relates to devices for dispersion and can be used, for example, in the oil industry for the preparation of a gas-liquid mixture (GHS) - foam, emulsion or suspension of the required, physically possible degree of dispersion.

The closest to the proposed device for the combination of essential features is a gas-liquid dispersant / RF Patent No. 64938, B01F 5/06, 27.07 / 2007 /, including an annular housing with a set of fittings installed in it, and the passage sections in the fittings are each with an eccentricity relative to the adjacent one . The number of dispersion and mixing chambers formed by adjacent fittings, preferably not less than five. The entrance to the housing is equipped with a tee for supplying mixed media.

This device, also suitable for the preparation of emulsions and suspensions, allows you to change the dispersion of the prepared mixture, but only by changing the flow rate of the mixed media; the prototype device is also suitable for producing solutions, however, the dissolution rate in the prototype device is fixed.

A disadvantage of the known device is the inability during the working process of preparing the mixture to change its dispersion, and during the preparation of the solution is the inability to change the rate of dissolution until the cessation of the preparation of the mixture or solution without changing the costs of the mixed media. At the same time, in the technological process for which a mixture or solution is prepared, it may be necessary to stop the supply of GHS, emulsion or suspension of this dispersion without changing the flow rate of the components of the mixture; with respect to the solution, it may be necessary to increase or decrease the rate / time of dissolution without changing the flow rate of the components of the solution.

On the other hand, the disadvantages of the prototype include the impossibility of maintaining a constant dispersion of the mixture when it is necessary to change the flow rate, for example, when switching from the circulation mode in the well of the mixture to the mode of pumping the mixture into the formation (for example, the formation has significant resistance to filtering the mixture compared to friction losses during circulation in the well). In relation to the preparation of the solution, respectively, the disadvantages of the prototype include the inability to maintain a constant dissolution rate / dissolution time with a changing flow rate of the mixed media.

The problem to be solved and the expected technical result are to create a highly efficient device for the preparation of GHS, emulsions and suspensions with the possibility of changing dispersion, as well as solutions with the ability to control the rate / time of dissolution without changing the flow rate of the components of the mixture or solution, on the one hand, and, on the other hand , devices for producing GHS, emulsions and suspensions with the possibility of maintaining constant dispersion if necessary, as well as solutions with the ability to maintain a constant speed / in dissolution belt when flow rate changes.

The problem is solved in that the device for producing mixtures and solutions, including the housing and the fitting element, contains a core moving in the housing, and the fitting element or the fitting elements are mounted on the core and / or in the housing. The fitting elements can be installed in various shapes and sizes. The housing may have a variable cross-section.

Variants of the proposed device thus imply the installation of one or more fitting elements only on the movable core or only in the housing, or both in the housing and on the core.

For an alternative to the claimed device, when the fitting element or the fitting elements are installed on the core, in addition to the specified technical result, it is also possible to completely turn off the device, if necessary, directly in the process without stopping the supply of mixed components.

The most significant effect on the achievement of a technical result related to the possibility of obtaining a mixture of the necessary — varying or constant dispersion or solution for the necessary time at a varying or constant flow rate is exerted by the sign “core moved in the body”.

As the core is inserted into the housing, regardless of the location of the fitting element or elements, the hydraulic resistance of the device changes due to changes, for example, the number and / or volume of the mixing chambers, the area of the passageway of the device, or their mutual combination; as a result, the working volume of the device and / or the flow rate through the device changes; as a result, the dispersion of the prepared mixture changes or the time of preparation of the solution changes. Moving the core, we control the degree of dispersion of the prepared mixture or the time of preparation of the solution, i.e. we can change them at a constant flow rate. On the other hand, in order to ensure a constant dispersion of the mixture or a constant speed / time of preparation of the solution with a varying flow rate, it is necessary and sufficient to maintain a constant pressure drop in the device, while also moving the core accordingly.

The figures show possible design options for the device.

Here:

1 - case;

2 - movable core;

3 - fitting element;

4 - screw rod;

5 - a nut.

Both components of the mixture or solution, as well as a previously prepared mixture or, for example, a solution concentrate, can be supplied to the device in any direction.

Figure 1-9 shows the device options with the location of the fitting elements on the movable core, the fitting elements can be of various shapes and sizes, which affects the flow rate, the volume of the mixing chambers, the turbulence of the flow in the mixing chambers and, as a consequence, the dispersion of the cooked mixture or during the preparation of the solution.

Figure 1-5 presents variants of the device with a constant cross-section of the housing.

In Fig. 5, in contrast, for example, from Fig. 3, the fitting elements are mounted on a conical core, which allows you to set the volume of the mixing chambers and thus set different modes of turbulization in one device.

Figures 6-9 show variants of a device with a variable cross-section of the casing (Fig. 8 illustrates the device in the off state when the core is pulled out of the casing of the device and is out of flow). A variable cross-section of the casing allows a very wide range to change the flow rate and, as a consequence, the degree of dispersion of the resulting mixture or, accordingly, the time of preparation of the solution with a slight movement of the core in the casing.

Figure 10 shows a variant of the device with a constant cross section of the housing and the arrangement of the fitting elements in it, the core also having a constant cross section, but the increased size of the core in figure 10, in contrast to the core in figure 1, reduces the volume of the mixing chambers.

11-13, the device is shown with the arrangement of the fitting elements both in the housing and on the core, which allows turbulent flow in the mixing chambers both on the housing side and on the core side, which increases the intensity of the preparation process and the mixture and solution . The device of FIG. 13 with a varying cross-section of the casing, a varying cross-section of the core and a varying shape and size of the fitting elements located both in the casing and on the core allows the kinetic energy of the flow to be most effectively realized in the process of dispersing the mixture or, accordingly, in the dissolution process.

The operation of the device of Fig.13 is as follows.

Option 1 - when you want to change the dispersion of the mixture at a constant flow rate. To increase the dispersion, regardless of the direction of flow, it is necessary by means of a nut 5 and a screw rod 4 to move the core 2 deep into the body 1 of the device; to reduce dispersion - to reverse the action.

Option 2 - when you want to change the speed / time of preparation of the solution at a constant flow rate. To increase the speed / reduce time / preparation of the solution, regardless of the direction of flow, it is necessary to move the core 2 into the body 1 of the device by means of a nut 5 and a screw rod 4; to reduce the speed / increase the time / preparation of the solution - perform the opposite actions.

Option 3 - when you want to maintain a constant dispersion of the mixture at a variable flow rate. To maintain constant dispersion, regardless of the direction of flow, it is necessary and sufficient to move the core 2 by means of a nut 5 and a screw rod 4 to a position in which the pressure drop between the input and output of the device body 1 will correspond to the pressure drop ΔP (Fig. 13) until the flow rate changes.

Option 4 - when it is required to maintain a constant speed / time for preparing the solution with a variable flow rate. To maintain a constant rate / time of preparation of the solution, regardless of the direction of flow, it is necessary and sufficient to move the core 2 by means of a nut 5 and a screw rod 4 to a position in which the pressure drop between the input and output of the device body 1 will correspond to the pressure drop ΔP (Fig.13) before the change in flow.

Claims (3)

1. A device for preparing mixtures and solutions, comprising a housing and a fitting element, characterized in that it contains a core movable in the housing, and the fitting element or fitting elements are mounted on the core and / or in the housing. 2. The device according to claim 1, characterized in that the fitting elements are installed in various shapes and sizes. 3. The device according to claim 1, characterized in that the housing has a variable cross-section.

Images