RU205031U9 - SORPTION FILTER WITH REGENERATING SYSTEM - Google Patents

Abstract

The utility model relates to the field of purification of liquids from oil products and can be used in oil production, oil refining, petrochemical and chemical industries. The side surface of the shell contains: four viewing windows; nozzles for the inlet and outlet of the sorbent, closed with hatches (the lower nozzle can also be used to access the inside of the filter in order to inspect the inner surface of the filter, cleaning and repair work); a branch pipe connecting the upper part of the shell with a cartridge filter (located directly inside the shell and designed to trap the sorbent carried away along with the liquid flow directed at the stage of countercurrent filter washing), which is part of the filter piping, which allows washing and regenerating the sorbent; branch pipe for hydraulic discharge of the sorbent, carried out as needed (depending on the degree of its contamination, calculated taking into account the terms of its use and the characteristics of the filtered liquid); pipe for supplying the filtered liquid; a washout pipeline designed to supply wash water with a flow fluidizing a sorbent layer. At the lowest point of the lower semi-elliptical part of the body there is a branch pipe provided for draining filtered water. Opposite to it, an air vent is attached to the body from above - a branch pipe of thin diameter, designed to remove the gaseous component of the incoming flow.

Description

The utility model relates to the field of purification of liquids from oil and oil products and can be used in the oil production, oil refining, petrochemical and chemical industries.

Known sorption filter [RU 169004, IPC B01D 25/00, publ. 03/01/2017], intended for the purification of wastewater from pollutants, providing an increase in the adsorption effect due to the use of materials that are not subject to destruction in a chemically aggressive aquatic environment. The sorption filter includes a cylindrical body with a cover and auxiliary pipes filled with a sorbent, as well as electrodes that create a potential difference and are located vertically in the body, the sorbent being made in the form of a multilayer structure.

The disadvantages of the known design are the need for layer-by-layer loading of several types of sorbent into the filter, which increases the complexity of starting and cleaning the device, as well as increased power consumption during the operation of the device, associated with the presence of electrodes inside the device used for polarizing the sorbent.

Also known is a two-stage pressure filter [RU 2527216, IPC B01D 24/18, publ. 08/27/2014], containing a vertical cylindrical body with a spherical lid and bottom, divided by a horizontal partition into upper and lower chambers. The upper and lower chambers of the device are loaded respectively with floating granular material and heavy multi-layer loading. The water to be cleaned enters through the middle distributor of the upper chamber and is filtered from bottom to top through a floating granular feed for cleaning from coarse contaminants.

The main disadvantages of the given analogue, in addition to the use of three types of sorbent for loading the device, are its compact design, which causes low flow filtration rates, unacceptable for high-speed and large-scale production, as well as a large share of the space occupied by the sorbent inside the device - from 50 to 80%, which is also is a factor that slows down the filtration process, complicates the purification of the sorbent, and will have a negative economic effect with the possible design of the device in a less compact resolution.

The closest analogue for the proposed utility model is a device for the purification of waste water [RU 2503483, IPC B01D 24/00, publ. 01/10/2014], which has a reservoir, a filtering medium from walnut shells located in the reservoir, and a feed inlet located in the reservoir above the filtering medium. The filter device may have a suction pipe system disposed in a filter medium that is configured and designed to wrap around the filter medium, and a filtered fluid inlet configured and positioned to supply the first fluid to the suction pipe system.

The disadvantage of this technical solution is the technological ill-conceivedness of the arrangement of the device body: for example, there are no holes and pipes for loading and unloading the sorbent, support structures for the filter shell, viewing windows, in the descriptive part of the pipe system of the device there is no reference to specific details of its hardware structure, which also not shown in the figures, which only give an idea of the direction of the process flows.

The technical result to be achieved by the proposed utility model consists in lowering the content of oil and oil products and mechanical impurities in the filtered liquid. The technical result can also be described as clarifying or increasing the degree of purification of an oil-water emulsion, which is a filtered liquid, if the content of mechanical impurities in it is assessed as zero.

This technical result is achieved due to the specific design of the filter, the main part of which is a shell on supports with branch pipes differentiated by functionality. Clarification of the incoming liquid flow occurs as a result of the adsorption of the pollutant by the surface of the sorbent loaded into the filter housing, which is used as a walnut shell, which is known for its adsorption properties and is widely used in the operation of filtration devices. The filtration process is carried out by passing the filtered liquid through a sorbent layer, the loading level of which is 45-50% of the height of the filter housing, and further draining the purified liquid through the lower branch pipe. In addition, by tying the shell with a system of pipes, which provides the ability to carry out counter-current washing of the sorbent with water, a regenerating system is implemented in the filter design, which makes it possible to repeatedly extend the service life of the sorbent used, less often to completely replace it.

The housing of the filter shell is made in the form of a hollow cylinder, the upper and lower surfaces of which have a semi-elliptical shape. The side surface of the shell contains: four viewing windows; nozzles for the inlet and outlet of the sorbent, closed with hatches (the lower nozzle can also be used to access the inner part of the filter for the purpose of revising the inner surface of the filter, cleaning and repair work); a branch pipe connecting the upper part of the shell with a cartridge filter (located directly inside the shell and designed to trap the sorbent carried along with the liquid flow directed at the stage of counter-current washing of the filter), which is part of the filter piping, which allows washing and regeneration of the sorbent; a branch pipe for hydraulic unloading of the sorbent, carried out as needed (depending on the degree of its contamination, calculated taking into account the period of its use and the characteristics of the filtered liquid); a branch pipe for feeding the filtered liquid; washout pipeline, designed to supply wash water with a flow fluidizing the sorbent layer. At the lowest point of the lower semi-elliptical part of the body there is a branch pipe provided for draining the filtered water. Opposite to it, an air vent is attached to the top of the body - a thin-diameter branch pipe designed to drain the gaseous component of the incoming stream.

A preferred embodiment of the invention is shown in FIG. 1, fig. 2. In FIG. 1 is a standard drawing of the device: three types with dimensions and symbols (1 - backfill hatch; 2 - hatch for unloading (hatch-manhole); 3 - wash pipeline ("washer"); 4 - branch pipe connected to the in-housing cartridge filter 5 - branch pipe for hydraulic discharge; 6 - viewing window; 7 - branch pipe for the medium outlet; 8 - air vent; 9 - branch pipe for the inlet medium In Fig. 2, five additional images of the utility model are given, two of which duplicate the corresponding images in Fig. 1, the other three are explanatory to them and are views of the device "left" and "side", as well as a view "left" in longitudinal section.

The sorption filter works as follows.

The full cycle of filter operation includes five sequential modes: filtration, fluidization, flushing liquid discharge, sedimentation and compaction of the sorbent. During filtration, the liquid to be filtered enters the filter housing through the branch pipe for the incoming medium and, under the action of gravity, passes through the sorbent layer resting on the false bottom inside the filter housing; the liquid cleaned of oil-oil and mechanical impurities is discharged from the bottom through a branch pipe in the center of the bottom. Additionally, gaseous components entering the filter housing with the incoming flow are removed from above through the air vent, which is necessary to maintain the pressure inside the vessel, which is the filter, at a sufficiently low level to exclude the occurrence of emergency situations. During the fluidization mode following filtration (which stops either after a certain time, or upon reaching a certain pressure difference measured at the inlet and outlet of the filter, or manually), fluidization or loosening of the sorbent bed occurs, which is necessary for its subsequent countercurrent washing. ... This happens as a result of the fact that part of the filtered liquid begins to circulate through the lower branch pipe, the cartridge filter and the washing pipeline, thus filling the entire filter housing completely; At the same time, the sorbent particles are in suspension in it - this is how fluidization of the sorbent layer occurs. The branch pipe connected in the upper part of the shell to the cartridge filter with its other end is submedian to the suction pipe system: in this way, a liquid flow passes through the cartridge, which does not carry away sorbent particles with it, but is additionally cleaned of oil-oil and solid suspensions, after which it returns to the filter body through the scrubbing pipeline and creating a vortex flow from the sorbent, the filtered liquid and suspended solids removed from the liquid inside the shell, moving counterclockwise. After fluidization, as a result of which the surface of the sorbent was sufficiently cleaned of pollutants through their transfer to the washing liquid, the washing liquid is discharged in the following way. Through the pipeline that supplied the liquid from the cartridge filter a to the washing pipeline in the process of the previous mode, the liquid stops flowing to the washer and begins to be discharged from the system. At the same time, a filtered liquid is fed through the lower branch pipe (outlet for the filtration mode), which is passed through the sorbent from bottom to top; just as in the previous mode, the cartridge filter traps sorbent particles, preventing them from being carried away from the system. The mode ends when the degree of contamination of the sorbent becomes three quarters less than that which was established before the start of washing. The next operating mode of the filter is the sedimentation of the sorbent. The suction piping system, which pulled the liquid flow through the cartridge filter to the outside, is turned off, and the shell, which was still suspended in the liquid, sinks to the bottom of the filter under the influence of gravity. Before resuming the actual filtration, the device for a short time goes into the mode of compaction of the sorbent: for this, the liquid in which the sorbent was suspended is removed through the lower branch pipe, as a result of which the sorbent layer again takes a form suitable for conducting the process of liquid filtration through it in the direction top down. The operating cycle of the device starts over.

Thus, the claimed sorption filter with regeneration, containing a housing on supports, made in the form of a hollow cylinder, the upper and lower surfaces of which have a semi-elliptical shape, four viewing windows, nozzles for the inlet and outlet of the sorbent, closed with hatches, a branch pipe that is part of the filter piping , which allows washing and regeneration of the sorbent, and connecting the upper part of the shell with a cartridge filter located directly inside the shell and designed to catch the sorbent placed inside the filter, carried away along with the liquid flow directed at the stage of countercurrent washing of the filter, which is used as a walnut shell , a branch pipe for hydraulic unloading of a sorbent, a branch pipe for feeding a filtered liquid, a washing pipeline, a branch pipe provided for draining filtered water, an air vent, characterized by the fact that the full cycle of operation includes five sequential modes: filtration, fluidization tion, discharge of flushing liquid, sedimentation and compaction of the sorbent.

Claims (1)

Sorption filter with regeneration, containing a body on supports, made in the form of a hollow cylinder, the upper and lower surfaces of which have a semi-elliptical shape, four viewing windows, nozzles for sorbent inlet and outlet, closed with hatches, a nozzle that is part of the filter piping that allows flushing and regeneration of the sorbent, and connecting the upper part of the shell with a cartridge filter located directly inside the shell and designed to catch the sorbent placed inside the filter carried away along with the liquid flow directed at the stage of countercurrent washing of the filter, which is used as a shell of walnuts, a branch pipe for hydraulic discharge sorbent, a branch pipe for supplying a filtered liquid, a washing pipeline, a branch pipe provided for the removal of filtered water, an air vent, characterized by the fact that the full cycle of operation includes five sequential modes: filtration, fluidization, discharge of flushing liquid bones, sedimentation and compaction of the sorbent.

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