RU111020U1 - FILTER MATERIAL - Google Patents

Abstract

 Filter material consisting of synthetic threads in the form of tubular knitwear made by plated weaving, inside of which are placed: fibrous material, rubber crumb, polyurethane foam crumb, characterized in that the grafted polycaproamide copolymer treated with a 10-40% solution is used as a fibrous material 1-hydroxyethylidene diphosphonic acid, in a volume ratio: the indicated fibrous material: rubber crumb, polyurethane foam crumb (1.5-3) :( 2-4) :( 2.5-3), respectively.

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 that use filters in the main and auxiliary production, in environmental processes of wastewater and flue gas treatment, 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 material made of synthetic filaments in the form of a tubular knitwear with a single weave surface, in which highly elastic polyurethane spandex filaments are used as synthetic filaments with a tension in the loops of 1.5-4 N / mm. (Russian patent No. 1438825, B01D 39/08, BI No. 43, 1988).

However, such filter materials have a low degree of purification of the water surface from oil products, as well as a low degree of purification when filtering liquids and gases.

Known filter material made of synthetic filaments in the form of a tubular knit with rubber crumb placed inside, treated with an ozone-air mixture, moreover, ebonite crumb is additionally placed inside the tubular knit, the dimensions of the purl loops are 0.8-1.4 times smaller than the knit front loops, with a volume ratio between rubber and hard rubber crumb 5: 1. (Russian Patent No. 2350375, B01D 39/08, BI No. 9, 2009).

The disadvantage of this filter material is the low quality of the filter during the cleaning of liquids and gases.

The closest filter material to the claimed object in terms of features and selected as a prototype is a tool for cleaning liquids and gases from solid particles in environmental cleaning processes. The filter material consists of synthetic threads in the form of tubular knitwear, which is made by plated weaving. Soil thread is made of synthetic threads, and plated - from rubber threads. Cellulose fibrous material, rubber fibers and polyurethane foam crumb in a volume ratio of 1: (2-4) :( 1.5-3) are placed inside the tubular knitwear (Russian patent No. 2256483, MKP B01D 39/08, C02F 1/28, BI No. 20, 2005)

The disadvantage of this filter material is the insufficient degree of absorption, the high complexity when collecting the sorbent from the surface of the water, low buoyancy when collecting the sorbent, and also a low degree of purification when filtering liquids and gases.

The objective of the utility model is to create a filter material with high filtering ability in the purification of liquids or gases, providing high quality cleaning water surface from oil products.

When using the proposed filter material, the following technical result is obtained: an increase in the quality of filtration in the process of cleaning liquids and gases, as well as an increase in buoyancy on the surface of the water when it is cleaned from oil products.

The technical result is achieved by the fact that the filter material, consisting of synthetic threads in the form of tubular knitwear, made by plated weaving, inside of which are placed: fibrous material, rubber crumb, polyurethane foam crumb, fibrous material - grafted polycaproamide copolymer treated with 10-40% solution 1 -oxyethylidene diphosphonic acid, in a volume ratio: the indicated fibrous material: rubber crumb, polyurethane foam crumb (1.5-3) :( 2-4) :( 2.5-3), respectively.

The use of rubber crumb inside the tubular knit increases the formation of rubber lumps during the collection of petroleum products, which increases the quality of cleaning the surface of the water from petroleum products and the quality of filtration of liquids and gases.

The use of polyurethane foam chips inside a tubular knit allows you to increase the buoyancy of the filter material on the surface of the water with maximum swelling of the rubber chips and fibrous material.

The use of polyurethane foam chips allows the collection of heavy metal particles at the pressure of the moving wastewater fluid, and also prevents rubber chips and fibrous material from being knocked together, resulting in an increase in the sorption capacity of the fibrous sorbent, which increases the quality of the filter during the cleaning process.

The use of a fibrous material - a grafted polycaproamide copolymer treated with 1-hydroxyethylidene diphosphonic acid inside a tubular knit eliminates the formation of rubber lumps during the collection of oil products and heavy metal particles in industrial effluents and allows oil products to be retained inside the structure by swelling. At the same time, increasing the size of the grafted polycaproamide copolymer, it stretches the knitted fabric made by plated weaving both along the buttonhole and looped rows, thereby further increasing the pores of the tubular knitted fabric, which accordingly leads to an increase in the degree of absorption of oil products, which increases the quality of the filter during the cleaning process.

Treatment of the grafted polycaproamide copolymer with 1-hydroxyethylidene diphosphonic acid allows purification of the filtered fluid by increasing the number of functional groups on the surface of the grafted polycaproamide copolymer, which improves the quality of the filter.

The treatment of the grafted polycaproamide copolymer with 1-hydroxyethylidene diphosphonic acid with a concentration of less than 10% does not allow to obtain a sufficient number of functional groups on the grafted copolymer, which affects the quality of the filtered liquid.

The treatment of the grafted copolymer of polycaproamide with 1-hydroxyethylidene diphosphonic acid with a concentration of more than 40% does not allow to obtain a sufficient number of functional groups on the grafted copolymer, which affects the quality of purification of the filtered liquid.

In FIG. filter material consisting of tubular knitwear 1 is presented, in which fibrous material is placed - a grafted polycaproamide copolymer treated with 1-hydroxyethylidene diphosphonic acid 2, rubber crumb 3 and polyurethane foam crumb 4.

Filter material in the form of a tubular knitwear of platen weave is obtained on a 14 class circular yarn machine from synthetic threads and rubber threads at a stop depth of 1.2-1.5 mm when synthetic threads are tensioned in front of the loop forming system 2.5-5.0 N and cut threads 0 , 2-0.9 N. Rubber crumb, polyurethane crumb and fibrous material, grafted polycaproamide graft treated with 1-hydroxyethylidene diphosphonic acid, are poured into the finished tubular knitwear in a volume ratio: (1.5-3) :( 2-4): (2.5-3), respectively. The ends at the ends of the filter material are sewn up on a flat-seam sewing machine.

Example 1

The filtering process is carried out using a filter material with a fibrous material - a grafted copolymer of polycaproamide treated with a 10% solution of 1-hydroxyethylidene diphosphonic acid, rubber and polyurethane foam crumbs, the volume ratio of the components is 1.5: 2: 2.5.

Example 2

The filtering process is carried out using a filter material with a fibrous material - a grafted polycaproamide copolymer treated with a 30% solution of 1-hydroxyethylidene diphosphonic acid, rubber and polyurethane foam crumbs, the volume ratio of the components is 2: 3: 2.5.

Example 3

The filtering process is carried out using a filter material with a fibrous material - a grafted polycaproamide copolymer treated with a 40% solution of 1-hydroxyethylidene diphosphonic acid, rubber and polyurethane foam crumbs, the volume ratio of the components is 3: 4: 3.

The filtration process was carried out on a 6% suspension with the presence of up to 15% of oil products and heavy metal particles of wastewater from the repair shop of the engineering plant. The particle size varied from 30 to 150 microns at a pressure drop of 3 atm. To determine the degree of absorption of oil products and particles of heavy metals, filter material, filter materials are placed in a layer of liquid fraction for 6 hours, and then weighed.

Table 1 Filter material Specific conductivity, l / m ² · min The degree of purification of the suspension,% The degree of absorption of oil products,% SOE, mEq / g Regeneration time, min Prototype 19.5 89 88 - 15.0 Example 1 20.5 95 103 2.5 13.6 Example 2 28.9 96 135 2.9 10.5 Example 3 28.9 96 135 2.9 10.5

The regeneration of the filter material is carried out by passing it through the rollers with a force of 20 kg between them.

The data in the table show that the specific productivity slightly increases by 1.5 times, the degree of purification and absorption of petroleum products improves, and the regeneration time also decreases.

Claims (1)

Filter material consisting of synthetic threads in the form of tubular knitwear made by plated weaving, inside of which are placed: fibrous material, rubber crumb, polyurethane foam crumb, characterized in that the grafted polycaproamide copolymer treated with a 10-40% solution is used as a fibrous material 1-hydroxyethylidene diphosphonic acid, in a volume ratio: the indicated fibrous material: rubber crumb, polyurethane foam crumb (1.5-3) :( 2-4) :( 2.5-3), respectively.