- Chemical industry (for filtration of oils, laques, paints and in catalyst production).
- Metallurgy (refinement of low melting metals and alloys).
- Thermal and atomic power engineering (microfiltration of liquids and gases from dispersed microimpurities and radionuclides).
- Food industry (fine purification of wines and alcohols, beer, juices, and organic oils).
- Highly efficient purification of drinking water.
- Purification of waste waters.
- Removing of toxic microimpurities from liquids and gases.
- Medicine and microbiology (sterile purification of water, including that from pyrogenic microimpurities), sterilization of the air in vent systems.
- Microelectronics (creation of "clean spaces", filtration of corrosion-active gases and liquids).
- Ecology (production of domestic filters for drinking water purification from heavy metal salts and toxic organic compounds).
- Automobile industry (filtration of fuel, oils, and exhaust gases).
State-of-art in practical application
The technological modes have been developed and the technological schemes have been optimized at ISMAN for production of highly porous materials with graded porosity based on Sialons, oxides, carbides.
Existing analog
Analogous samples of "Sartorius" (FRG), "Seitz" (FRG), "Millipore"(USA).
Effectiveness in comparison with the analog - The filtration characteristics of the SHS filters are 30-40 % higher.
- The efficient structure (graded porosity) improves filtration efficiency and provides possible regeneration of the filters by liquid or gas return movement.
- The SHS filters are cheaper than their industrial analogs by 40-50 %.
Project principal investigators
Borovinskaya I.P., Merzhanov A.G., Uvarov V.I.
Patents and publications - Int. Appl. WO 9007 (1990).
- Borovinskaya I.P., Merzhanov A.G., Karpov V.V., Uvarov V.I. SHS Materials with Graded Distribution of Porosity and Pore Size // Nauka-proizvodstvu, 1997, ¹ 1(1), pp. 32-33.
Idea, object of the project
To create novel highly porous (up to 60 %) SHS ceramic materials, particularly materials with graded porosity which are characterized by high filtrating characteristics, catalytic and sorption properties for gas and liquid filtration, and also tribotechnical characteristics.
Basic service parameters
The material chemical composition: sialons with addition of filament crystals, Si3N4, TiC, AlN with metal borides, and oxides BN with metal oxides, and also other compounds type: SiO2 + Mg + N2, TiO2 + C + Mo, TiO2 + B2O3 + Mg + N2 and etc.
|
Porosity total (closed) |
30-60% (3% max) |
|
Maximum operating temperature |
1000 °Ñ |
|
Effectiveness of dispersed microimpurity filtration (particle size 0.01 micrometer min) |
99.9999 % |
|
Efficiency of water ultrafiltration (pressure gradient on the filter 0.1 MPa) |
10 liters/cm2.h |
|
Efficiency of gas ultrafiltration (pressure gradient on the filter 2 kPa) |
40 liters/cm2.h |
|
Bending strength |
0.5 MPa min |
|
Geometrical dimensions of samples, up to: |
|
|
disks (diameter) |
200 mm max |
|
cylinders: diameter (length) |
120 mm (1000 mm) max |
Test results of SHS filters at filtration of drinking water: |
|
¹ |
Probe |
Value, mg/liter |
Standard, |
|
|
Before |
After |
mg/liter, max |
||
|
1 |
Acetone |
16.2 |
3.9 |
0.3 |
|
2 |
Atrazine |
1.6 |
0.04 |
0.5 |
|
3 |
Simazine |
1.5 |
0.04 |
Abs. |
|
4 |
2,4-dichloroxyacetic acid |
4.2 |
0.02 |
-- |
|
5 |
Toluene |
0.18 |
0.05 |
0.5 |
|
6 |
Phenol |
0.04 |
0.001 |
0.001 |
|
7 |
Dibromchloromethane |
0.5 |
0.0002 |
0.03 |
|
8 |
Tetrachloromethane |
0.04 |
0.0001 |
0.006 |
|
9 |
Trichloromethane |
4 |
0.02 |
0.06 |
|
10 |
Pentachlorphenol |
1.31 |
0.05 |
0.01 |
-
Destination
|
Contact person |
