Coalescing filter material
The filter coalescing material with spherical glass granules and sorbent particles enhances coalescing and sorption properties, addressing low cleaning parameters and pressure drop issues while reducing sorbent use and improving regeneration efficiency.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- LLC ECO-GRADIENT
- Filing Date
- 2025-12-12
- Publication Date
- 2026-06-25
AI Technical Summary
Existing filter coalescing materials exhibit low cleaning parameters, pressure drop, and inefficient sorption properties, along with high sorbent consumption and regeneration complexity.
A filter coalescing material comprising a mixture of spherical glass beads and 0.005-0.2 mm sorbent particles with smooth spherical glass granules of two fractions (0.9-2.5 mm and 0.1-0.5 mm) and activated carbon or zeolite, in specific volume ratios, enhancing coalescing and sorption properties.
Improves coalescing and sorption efficiency, reduces pressure drop, maintains filtration quality during backwashing, and decreases sorbent consumption.
Smart Images
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Abstract
Description
[0001] FILTER COALESCING MATERIAL
[0002] AREA OF TECHNOLOGY
[0003] The invention relates to wastewater treatment and can be used in any sector of the national economy where devices for separating petroleum products of the sorbent or coalescing type are required.
[0004] LEVEL OF TECHNOLOGY
[0005] A filtering coalescing-sorbing material is known, disclosed in SU 1650201 A1, published on 23.05.1991, prototype.
[0006] The filtering coalescing-sorbing material is a mixture of coalescing and sorbing material, wherein the coalescing material is made in the form of smooth spherical granules with a diameter of 0.8-2 mm, and the particles of the sorbing material are 0.01-0.1 mm in size, and the components are contained in the following ratio: coalescing material - 50-60% sorbing material - 50 - 40%.
[0007] The disadvantage of the technical solution described above is the low cleaning parameters.
[0008] DISCLOSURE OF THE INVENTION
[0009] The objective of the invention is to develop a filter coalescing material with enhanced coalescing and sorption properties.
[0010] The technical result of the invention is an increase in the coalescing and sorption properties of the filter material, a reduction in the pressure drop, an improvement in the quality of regeneration of the coalescing material during backwashing, and a reduction in the consumption of expensive sorbent material.
[0011] The said technical result is achieved due to the fact that the filter coalescing material contains a mixture of sorbent particles of fraction 0.005-0.2 mm and coalescing material (CM) in the form of smooth spherical glass granules of two fractions: 0.9 - 2.5 mm and 0.1 - 0.5 mm with the following ratio of said materials, vol. %: smooth spherical glass granules of fraction 0.9 - 2.5 mm (CM1) - 58-62; smooth spherical glass granules of fraction 0.1 - 0.5 mm (CM2) - 19-21; sorbent - 19-21.
[0012] Activated carbon, zeolite or any other sorbent with the ability to adsorb petroleum products are used as a sorbent.
[0013] IMPLEMENTATION OF THE INVENTION
[0014] To obtain the stated filter coalescing material, sorbent particles of the 0.005-0.2 mm fraction, KM1 of the 0.9-2.5 mm fraction, and KM2 of the 0.1-0.5 mm fraction are mixed in the stated quantities until a uniform mixture is obtained. Activated carbon, zeolite, or any other sorbent capable of adsorbing petroleum products are used as the sorbent.
[0015] Filtration of oil-water emulsion of diesel fuel with the concentration of oil product of 300 mg / l is carried out separately through three columns filled: the first is a two-component column, the diameter of the material is according to the prototype, the second is with the declared filtering coalescing material in the form of a uniform mixture of KM1 fraction of 0.9 - 2.5 mm, KM2 fraction of 0.1 - 0.5 mm and a sorbent - activated carbon of fraction 0.005 - 0.2 mm, the third - with a sorbent - activated carbon of fraction 0.005 - 0.2 mm, the layer height in each column is 200 mm, and the filtration speed is 0.004 m / s.The column with the prototype yields water with an oil product content of 70-100 mg / L, the column with the sorbent yields water with an oil product content of 0.7 mg / L, and the column with the claimed filter coalescing material yields water with an oil product content of 0.3 mg / L. However, the pressure drop in the column with the sorbent is 3.5 times greater than in the column with the claimed filter coalescing sorbent material. Moreover, the pressure drop in the column with the specified mixture remains virtually unchanged. After saturating the surface of the granules in the pores of the column with the claimed filter coalescing material, the filter material of this column switches to coalescing mode, and the purification capacity of the column with the mixture remains unchanged throughout the experiment.
[0016] Tables 1-2 present the filtration results. A clear advantage of the proposed coalescing filter material is reduced sorbent consumption, as smooth spherical glass beads occupy up to 80% of the column volume. The sorbent, saturated with oil product and loaded with mechanical impurities, is easily removed by rinsing with water. After the smooth spherical glass beads have dried, fresh sorbent is loaded and mixed with them, and the column is ready for further use.
[0017] The claimed filter coalescing material exhibits new properties, consisting of the correct organization of liquid hydrodynamics in the volume of the material, reduced pressure drop, as well as high quality regeneration of the claimed coalescing material during backwashing.
[0018] The invention has been disclosed above with reference to a specific embodiment. Other embodiments of the invention may be obvious to those skilled in the art without altering its essence as disclosed herein. Accordingly, the invention should be considered limited in scope only by the following claims. Table 1
[0019] Table 2
Claims
CLAUSES OF THE INVENTION 1. A filtering coalescing material containing a mixture of sorbent particles of fraction 0.005-0.2 mm and a coalescing material in the form of smooth spherical glass granules of two fractions: 0.9 - 2.5 mm and 0.1 - 0.5 mm, with the following ratio of the said materials, vol. %: smooth spherical glass granules of fraction 0.9 - 2.5 mm - 58-62; smooth spherical glass granules of fraction 0.1 - 0.5 mm - 19-21; sorbent - 19-21.