RU2785602C1 - Sorption apparatus with cartridges for liquid purification with vortex motion of sorbents content - Google Patents

Abstract

FIELD: liquids purification.

SUBSTANCE: invention relates to the field of purification of liquids from various impurities and can be used, in particular, for the purification of fire-resistant lubricating oils used for lubricating turbines at thermal power plants (TPP) and nuclear power plants (NPP). The sorption cartridge for cleaning fire-resistant lubricating oils contains a vertical cylindrical body, to the upper end of which the first filter element is attached, and to the lower end - the second filter element with an inlet pipe designed to supply the liquid to be purified. Inside the cylindrical body there is a solid sorbent in the form of granules. An axial-vane swirler is installed in the lower part of the cylindrical body. The first filter element contains two rings with radial elements attached to them evenly along the circumference, between which the first filter mesh is clamped. The second filter element contains one ring with radial elements attached to it evenly along the circumference and a flat cylindrical plate with a hole, between which the second filter mesh is clamped. Sorption apparatus for purification of fire-resistant lubricating oils contains a reservoir, inside which at least one sorption cartridge is installed, the inlet of which is connected to a collector, which is connected to the first pipeline for supplying the liquid to be purified, connected to the pump. The pump is connected to the second pipeline for supplying the liquid to be purified, which is connected to the supply system of the liquid to be purified. The tank is also connected to the pipeline for removal of the liquid to be purified, connected to the supply system of the liquid to be purified.

EFFECT: improving the cleaning efficiency of fire-resistant lubricating oils.

4 cl, 5 dwg

Description

Technical field

The invention relates to the field of purification of liquids from various impurities and can be used, in particular, for the purification of fire-resistant lubricating oils used for lubricating turbines at thermal power plants (TPP) and nuclear power plants (NPP).

State of the art

Sorption devices are used to purify liquids from various impurities. At the same time, many sorption apparatuses use porous sorbents made by sintering their components.

Known adopted as a prototype of the 1st and 2nd objects of the claimed invention filter element for centrifugal-dynamic separation of dispersed systems, characterized in that it contains a frame, which is a hollow cylinder with drainage grooves on the outer surface and filter holes, made uniformly along its entire surface, on the outer surface of the frame using the upper and lower clamping flanges, as well as at least one clamp, a porous filter material is fixed with a hermetic pressure to the frame, while the frame contains at least one slot made parallel to the axis of the cylinder, the edges of the porous filter material are tucked into the slot of the frame and fixed using clamping flanges and clamps, and the clamping flanges contain at least one sealing ring, ensuring a tight fit of the filter material to the frame (patent RU 176937 U1, publication date : 02.02.2018 ., hereinafter - [1]).

A disadvantage of the filter element known from [1] is that it uses a porous filter material, in the manufacture of which, by sintering its components, some of their sorption properties are lost. In this case, as a result of the use of a porous filter material, the intensity of interaction between the liquid to be purified and the filter material may be insufficient.

Disclosure of invention

The task to be solved by the patented group of inventions and the technical result is to increase the efficiency of purification of fire-resistant lubricating oils using a sorption apparatus.

The solution of this problem by achieving the specified technical result in relation to the first object of the claimed group of inventions is ensured by the fact that the sorption cartridge contains a vertical cylindrical body, to the upper end of which the first filter element is attached, and to the lower end - the second filter element with an inlet pipe designed to supply purified liquid. At the same time, a solid sorbent in the form of granules is placed inside the above cylindrical body, and an axial-vane swirler is installed in the lower part of the above cylindrical body. Moreover, the first filter element contains two rings with radial elements attached to them evenly along the circumference, between which the first filter mesh is clamped. In this case, the second filter element contains one ring with radial elements attached to it evenly along the circumference and a flat cylindrical plate with a hole, between which the second filter mesh is clamped. Moreover, the inlet pipe is attached to a flat cylindrical plate. Wherein the first filter element is attached to the upper end of the housing with the help of the first clamping nut, and the second filter element is connected to the lower end of the housing with the help of the second clamping nut; while in the first and second clamping nuts there are through holes for the passage of the liquid being cleaned.

The solution of this problem by achieving the specified technical result in relation to the second object of the claimed group of inventions is ensured by the fact that the sorption apparatus contains a tank inside which at least one sorption cartridge is installed, the inlet of which is connected to a manifold, which is connected to the first pipeline for supplying the liquid to be purified, connected to the pump. In this case, the pump is connected to the second pipeline for supplying the liquid to be purified, which is connected to the supply system of the liquid to be purified. Moreover, the said tank is also connected to the pipeline for removal of the liquid to be purified, connected to the supply system of the liquid to be purified.

The causal relationship between the set of essential features of the group of inventions being patented and the achieved technical result is as follows.

During operation of the sorption apparatus, the liquid to be purified is supplied by means of a pump through the first and second pipelines for supplying the liquid to be purified from the system for supplying the liquid to be purified to the reservoir collector, from where it enters through the inlet pipe and the second filter element into the lower part of the vertical cylindrical body of the sorption cartridge. Then the flow of the liquid to be purified is swirled with the help of an axial-vane swirler and mixed with a sorbent in the form of granules. After that, the purified liquid, separated from the sorbent, leaves the upper part of the vertical cylindrical body through the first filter element and enters the tank. From the tank, the liquid to be cleaned enters through a pipeline to drain it back to the supply system. The body of the sorption cartridge is located vertically to minimize the ingress of the sorbent in the form of granules onto the grid of the first filter element from its inner side due to the effect of gravity on the sorbent particles during the operation of the sorption apparatus. At the same time, the flow rate of the liquid to be purified through the sorption cartridge is also selected from the condition of preventing the sorbent from entering the inner side of the grid of the first filter element. The first and second filter elements do not allow the sorbent to spill out of the cylindrical body during the transportation of the sorption cartridge. Due to the fact that the sorbent is in the form of granules, and not a porous material made by sintering the components of the sorbent, its sorption properties are improved compared to the prototype [1]. By providing mixing of the sorbent with the liquid to be purified using an axial-vane swirler, an increase in the intensity of the interaction of the sorbent with the liquid to be purified is ensured. Thus, an increase in the efficiency of liquid purification using a sorption apparatus is provided.

Brief description of the drawings

In FIG. 1 shows a sorption cartridge in a longitudinal section along the axis of symmetry. In FIG. 2 shows the first filter element from the inlet side of the flow of the liquid to be purified, while the outlet side of the first filter element is identical to the inlet side. In FIG. 3 shows the second filter element on the inlet side of the flow of the liquid to be purified. In FIG. 4 shows the second filter element from the outlet side of the flow of the liquid to be purified. In FIG. 5 shows a diagram of the sorption apparatus.

Description of the positions of the figures

1 - vertical cylindrical body;

2 - solid sorbent in the form of granules;

3 - axial-vane swirler;

4 - rings;

5 - radial elements;

6 - the first filter mesh;

7 - ring;

8 - radial elements;

9 - flat cylindrical plate with a hole;

10 - second filter mesh;

11 - inlet pipe;

12 - the first clamping nut;

13 - second clamping nut;

14 - tank;

15 - flat plate;

16 - collector;

17 - the first pipeline for supplying the liquid being cleaned;

18 - pump;

19 - the second pipeline for supplying the liquid being cleaned;

20 - system for supplying the liquid being cleaned;

21 - pipeline for removal of the liquid to be cleaned;

22 - pipeline for draining the liquid being cleaned;

23 - air vent.

Implementation of the invention

Below is a particular example of the design of a sorption apparatus with sorption cartridges and the principle of their operation.

A fire-resistant used lubricating oil with an acid number of 2.6 mg KOH/g Reolub - OMTI was used as a cleaned liquid, which is a mixture of trixylenyl phosphates obtained by esterification of technical 3,5-xylenol containing up to 75% 3,5-xylenol.

The sorption cartridge contains a vertical cylindrical body 1 made of AISI 304 steel, to the upper end of which the first filter element made of AISI 304 steel is attached, containing two rings 4, to each of which three radial elements 5 are attached uniformly along the circumference. rings 4 with radial elements 5 attached to them clamp the first filter mesh 6 with a mesh size of 0.25 mm. A second filter element made of AISI 304 steel is attached to the lower end of the vertical cylindrical body 1, containing one ring 7 with three radial elements 8 attached to it evenly along the circumference and a flat cylindrical plate with a hole 9, between which the second filter mesh 10 is clamped. branch pipe 11, on the outer wall of which there is a thread, is welded to the outer surface of the end wall of a flat cylindrical plate with a hole 9 so that its hole is coaxial with the hole in the plate 9. The first filter element is pressed against the end face of the vertical cylindrical body 1 using the first clamping nuts 12 made of AISI 304 steel having a through hole in its end wall, and the second filter element is pressed against the lower end of the cylindrical body 1 by means of a second clamping nut 13 made of AISI 304 steel having a through hole in its end wall. In the lower part of the vertical cylindrical body 1, an axial-blade swirler 3 made of AISI 304 steel is installed, which contains three blades, each of which is welded to the inner surface of the end wall of one of the three radial elements 8. At the same time, sorbent AB is located inside the vertical cylindrical body 1 17-8 hours in the form of granules with a particle size of about 400 microns (Fig. 1, 2, 3, 4).

The sorption apparatus contains a tank 14 made of AISI 304 steel and two of the above sorption cartridges, which are screwed with a thread on the outer surface of the walls of their inlet nozzles 11 into threaded holes in a flat plate 15 made of AISI 304 steel, welded to the inner walls tank 14 and separating the internal volume of the tank 14 into the upper part and the lower part, which forms the collector 16. In this case, the collector 16 is connected to the first pipeline made of AISI 304 steel for supplying the liquid to be cleaned 17, connected to the pump 18, which was used as a gear pump Varisco G04 3/4 SOX PXMF SF L071. At the same time, the pump 18 is connected to a second pipeline for supplying the liquid to be purified, made of AISI 304 steel, 19, which is connected to the supply system of the liquid to be purified 20, which is an oil tank made of AISI 304 steel. Moreover, the reservoir 14 is also connected to a pipeline made of AISI 304 steel for draining the liquid to be purified 21, connected to the supply system of the liquid to be purified 20. At the same time, the second pipeline for supplying the liquid to be purified 19 is also connected to the pipeline made of AISI 304 steel for draining the liquid to be purified 22, and the reservoir 14 is provided with an air vent 23 for pressure relief (FIG. 5).

The operation of the sorption apparatus with sorption cartridges was carried out as follows.

First, the liquid to be purified was supplied by means of a pump 18 through the first and second pipelines for supplying the liquid to be purified 17, 19 from the system for supplying the liquid to be purified 20 to the collector 16 of the tank 14, from where it came through the inlet pipes 11 and the second filter screens 10, cleaning it from sludge, into the lower part of the vertical cylindrical housings 1 of two sorption cartridges. Then the flow of the liquid to be purified was swirled in each of the sorption cartridges using axial-vane swirlers 3 and mixed with the solid sorbent in the form of granules 2. After that, the purified liquid, separated from the solid sorbent in the form of granules 2, left the upper part of the vertical cylindrical housings 1 of the sorption cartridges through their first filter meshes 6 and entered the upper part of the tank 14. Then, from the upper part of the tank 14, the liquid to be purified entered through the pipeline for its removal 21 back to the supply system 20. After several cycles of liquid purification, it was removed from the sorption apparatus through a pipeline for draining the liquid to be purified 22 by opening the stop valves installed on its line into a container for its storage (not shown in the figure). Cylindrical housings 1 of two sorption cartridges are arranged vertically to minimize the ingress of solid sorbent in the form of granules 2 onto the first filter meshes 6 from their inner side due to the action of gravity during operation of the sorption apparatus. At the same time, the flow rate of the liquid to be purified through the sorption cartridges was also chosen from the condition of preventing the solid sorbent in the form of granules from getting on the inside of the first filter meshes 6 and could be controlled according to the readings of the pressure gauge connected to the pump 18 (not shown in Fig.). The first and second filter meshes 6, 10 do not allow the solid sorbent in the form of granules 2 to spill out of the cylindrical housings 1 during the transportation of the sorption cartridges. Due to the fact that the sorbent 2 is in the form of granules, rather than a porous material made by sintering the components of the sorbent, its sorption properties are improved compared to the prototype [1]. By providing mixing of the solid sorbent in the form of granules 2 with the liquid to be purified using axial-vane swirlers 3, the intensity of interaction of the solid sorbent in the form of granules 2 with the liquid to be purified is increased. Thus, an increase in the efficiency of liquid purification using a sorption apparatus is provided.

Industrial Applicability

Patentable group of inventions meets the condition of "industrial applicability". The essence of the technical solution is disclosed in the formula, description and drawings clearly enough for understanding and industrial implementation by the relevant specialists, and the means used are simple and available for industrial implementation in the field of cleaning liquids from various impurities.

Claims (4)

1. Sorption cartridge for cleaning fire-resistant lubricating oils, characterized in that it contains a vertical cylindrical body, to the upper end of which the first filter element is attached, and to the lower end - the second filter element with an inlet pipe designed to supply the liquid to be cleaned; at the same time, a solid sorbent in the form of granules is placed inside the above cylindrical body, and an axial-blade swirler is installed in the lower part of the above cylindrical body. 2. Sorption cartridge for cleaning fire-resistant lubricating oils according to claim 1, characterized in that its first filter element contains two rings with radial elements attached to them evenly along the circumference, between which the first filter mesh is clamped; wherein the second filter element contains one ring attached to it evenly along the circumference of the radial elements and a flat cylindrical plate with a hole, between which the second filter mesh is clamped; moreover, the inlet pipe is attached to a flat cylindrical plate. 3. Sorption cartridge for cleaning fire-resistant lubricating oils according to claim 1 or 2, characterized in that the first filter element is attached to the upper end of the housing using the first clamping nut, and the second filter element is attached to the lower end of the housing using the second clamping nut; while in the first and second clamping nuts there are through holes for the passage of the liquid being cleaned. 4. Sorption apparatus for cleaning fire-resistant lubricating oils, characterized in that it contains a reservoir inside which at least one sorption cartridge according to claim 1, or 2, or 3 is installed, the inlet of which is connected to a manifold that is connected to the first pipeline for supply of the liquid to be cleaned, connected to the pump; wherein the pump is connected to a second pipeline for supplying the liquid to be purified, which is connected to the supply system of the liquid to be purified; moreover, the specified tank is also connected to the pipeline for removal of the liquid to be purified, attached to the supply system of the liquid to be purified.

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