RU68349U1 - FILTER MATERIAL - Google Patents

Abstract

The utility model relates to the purification of liquids and gases from solid particles and can be used in chemical, petrochemical, metallurgical, automotive and other industries using filters in the main and auxiliary production, in environmental wastewater treatment processes, during oil spills from tankers, oil pipelines and oil storage facilities, as well as for collecting oil products from the surface of the water. When using the proposed filter material, the following technical result is obtained: an increase in the quality of filtering in the process of cleaning liquids, an improvement in the degree of purification of the surface of the water from oil products, and also the ability to move along the surface of the reservoir. The technical result is achieved by the implementation of the multilayer filter material in the form of tubular knitwear from synthetic threads, while inside the inner layer of tensile and inextensible threads there is a hollow container, and crumb rubber is placed in the gap between the container and the inner layer, the outer layer consisting of tubular knitwear inextensible and extensible yarns, characterized in that a flexible plate is fixed in the upper part of the hollow container, the length of which is greater than the diameter of the container by 5-10%, while the crumb rubber has a size of 1-3 mm.

Description

The utility model relates to the purification of liquids and gases from solid particles and can be used in chemical, petrochemical, metallurgical, automotive and other industries using filters in the main and auxiliary production, in environmental wastewater treatment processes, during oil spills from tankers, oil pipelines and oil storage facilities, as well as for collecting oil products from the surface of the water.

Known filter materials from chemical threads in the form of knitted knitwear, the loops of which form through pores by interlacing an eraser 1 + 1, in which one of the threads is elastomeric, and at least two weft threads are located between the loops of the front and back sides, while the thickness of the weft thread is 1 , 1-1.3 times the diameter of the through pore. (Russian Patent 1438826, B01D 39/08, BI No. 43, 1988).

However, such filter materials do not provide the necessary degree of purification, and also have an insufficient degree of absorption of oil products from the surface of the water.

Known tool for cleaning the surface of the water from oil and oil products, containing a layer of porous sorbent in the form of a two-layer plate, consisting of a layer of porous material based on a composition of crumb rubber from 0.2 to 2.5 mm in size and powdered polyethylene in the ratio of mass parts: rubber crumb - 100, polyethylene 5-20, and a plastic film connected to a porous material when heated. (Certificate for utility model of the Russian Federation No. 6165, class IPC 6 V32v 25/00 BPM, 1998, No. 3).

However, the disadvantage of this tool is the low degree of absorption of oil and oil products, as well as the complexity of manufacturing the design.

Known means for cleaning the surface of the water from oil and oil products in the form of a plate based on a composition of rubber crumb and powdered polyethylene, the composition further comprises crushed fibrous cellulosic material in the following ratio of components (parts by weight): rubber crumb 100, polyethylene 15-25, crushed fibrous cellulosic material 10-30. (Russian Patent No. 2148025, С02F 1/28, BI No. 12, 2002).

The disadvantage of this tool is the complexity of manufacture, insufficient absorption, the high complexity when collecting the sorbent from the surface of the water, as well as the low degree of purification when filtering liquids and gases.

The closest filter material to the claimed object in terms of features and selected for the prototype is a filter material in the form of tubular knitwear of tensile and inextensible threads, made of multilayer synthetic fibers, inside which there is a hollow container, and rubber crumb is placed in the gap between the container and the inner layer the size of 0.2-1.3 mm, and the outer layer consists of a tubular knitwear of inextensible and extensible threads. (Russian Patent No. 2219986, B01D 39/08, С02F 1/28 BI No. 36, 2003)

However, such filter materials are ineffective, since they hold oil products only near the filter material and do not collect on the water surface, since they do not have sufficient mobility.

The objective of the utility model is to create a new filter material with the ability to purify liquids from petroleum products by moving it over the surface of a reservoir.

When using the proposed filter material, the following technical result is obtained: an increase in the quality of filtration during the purification of liquids, an improvement in the degree of purification

surface water from petroleum products, as well as the ability to move on the surface of the reservoir.

The technical result is achieved by the implementation of the multilayer filter material in the form of tubular knitwear from synthetic threads, while inside the inner layer of tensile and inextensible threads there is a hollow container, and crumb rubber is placed in the gap between the container and the inner layer, the outer layer consisting of tubular knitwear inextensible and extensible yarns, characterized in that a flexible plate is fixed in the upper part of the hollow container, the length of which is greater than the diameter of the container by 5-10%, while the crumb rubber has a size of 1-3 mm.

The use of a fixed flexible plate in the upper part of the hollow tank allows to give the filter material mobility relative to the axis, which increases the quality of cleaning the water surface from oil products.

Using a plate with a length of less than 5% of the diameter of the tank does not sufficiently ensure the maneuvering of the filter material over the surface of the water, which reduces the quality of cleaning.

The use of a plate with a length of more than 10% of the diameter of the container has low stability on the surface of the water, which requires high costs during operation.

Use rubber crumb size less than 1 mm. ineffective, since the rubber crumb swells a little and under the influence of water pressure slips between the pores of a knitted tubular fabric.

The use of rubber crumbs with a size of more than 3 mm is impractical, since when cleaning from oil products, the filter material loses its mobility on the surface of the water, which leads to poor quality.

Figure 1 shows a longitudinal section of the filter material, and figure 2 shows a cross section of the filter material.

Figure 1 shows a longitudinal section of a filter material consisting of an inner layer 1 made of tubular knitwear of tensile and inextensible filaments, in which a hollow container 2 is located, and a crumb rubber 3 is placed in the gap between the container and the inner layer. consists of tubular knitwear of tensile and inextensible threads. In the upper part of the hollow container 2, a flexible plate 5 is fixed using a clamp 6.

Figure 2 presents a cross section of the filter material, consisting of an inner layer 1 made of tubular knitwear of tensile and inextensible threads, in which the hollow container 2 is located, and in the gap between the container and the inner layer there is rubber crumb 3. In the upper part of the hollow capacity 2 fixed flexible plate 5.

The outer layer 4, consisting of a tubular knitwear of extensible and inextensible threads, contains additional looped rows of inextensible threads.

The inner layer of the filter material in the form of tubular knitwear is made on a class 8-22 circular knitting machine by simultaneously knitting inextensible and stretchable threads under tension in the knitting system of 1.1-3.4 N and a stop depth of 2.5 mm. A hollow container is placed in the inner layer and rubber crumb is poured between the container and the inner layer, and the edges of the tubular knit are fixed with clamps.

The outer layer of the filter material in the form of a tubular knit eraser 1 + 1 is made on a multi-system double-loop circular knit machine of grade 8-22 by simultaneously knitting inextensible and extensible yarns

the tension in the knitting system is 1.8-2.9 N and the depth of stopping is 3.5 mm. To obtain additional looping rows of weaving the surface from inextensible threads, several (8-10) loop-forming systems use only the loop-forming systems of the needle cylinder, with a thread tension of 0.5-1.2 N at a maximum stop depth. The outer layer of tubular knitwear is put on the inner layer so that additional rows of inextensible threads are located at the level of the water surface. On the upper part of the hollow container 2, a flexible plate 5 is fixed using clamps 6.

For clarity, the test table of the filter material in comparison with the prototype.

The filtration process was carried out for a 5.5% suspension with the presence of up to 18% of oil products from wastewater of a car repair shop. The particle size varied from 15-140 microns with a pressure drop of 3.5 atm. To determine the degree of absorption of oil products on the surface of the water, the filter material was placed in a layer of the liquid fraction and held for 45 minutes, and then weighed. The movement of the filter material over the surface of the water was carried out by applying an air flow to the flexible plate.

Example 1

The filtering process was carried out using a filter material, the inner layer of which is made of nylon and spandex threads and filled with rubber crumb 1 mm in size, and the outer layer is made of nylon and spandex threads, in which additional rows are made of nylon thread and the length is flexible plates are 5% larger than the diameter of the container.

Example 2

The filtering process of example 1 using a filter material, the inner layer of which is made of polypropylene thread and spandex thread filled with rubber crumb

3 mm in size, and the outer layer of polypropylene yarn and spandex yarn, in which additional rows are made of nylon yarn, and the length of the flexible plate is 10% more than the diameter of the container.

Example 3

The filtering process according to example 1 using a filter material, the inner layer of which is made of nylon filament and spandex filament, filled with rubber crumb size 2 mm, and the outer layer of polypropylene filament and spandex filament, in which additional rows are made of polypropylene filament, the length of the flexible plate on 8% more than the diameter of the tank.

Material Specific productivity, l / m ² min The degree of purification of the suspension,% The degree of absorption of oil,% The filter material made on the prototype 14.6 90 298 The proposed filter material according to example 1 14.7 91 318 The proposed filter material according to example 2 14.9 92 331 The proposed filter material according to example 14.7 91 326

The data in the table show that the specific productivity of the filtering process increases, the quality of the filtering and the degree of absorption of oil products from the surface of the water are improved due to the swelling of rubber crumb, an increase in the surface and volume of the filter

Thus, the above information indicates the fulfillment of the following set of conditions when using the claimed utility model:

means that embody the claimed utility model in its implementation, can be used in chemical, petrochemical, metallurgical, automotive and other industries using filters in the main and auxiliary industries, in environmental wastewater treatment processes, when spilling oil from tankers, oil pipelines and oil storage facilities , as well as for the collection of petroleum products from the surface of the water;

- for the claimed utility model as described in the independent clause of the utility model formula below, the possibility of its implementation using the means and methods described above or known prior to the priority date is confirmed;

- a tool embodying the claimed utility model in its implementation, seen by the applicant of the technical result.

Therefore, the claimed utility model meets the requirement of "industrial applicability" under applicable law.

Claims (1)

The filter material is multilayer in the form of a tubular knit made of synthetic threads, while a hollow container is located inside the inner layer of tensile and inextensible threads, and crumb rubber is placed in the gap between the container and the inner layer, and the outer layer consists of a tubular knit of inextensible and extensible threads, characterized in that in the upper part of the hollow container a flexible plate is fixed, the length of which is 5-10% more than the diameter of the container, while the rubber crumb has a size of 1-3 mm