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Freon-free Ultra-Dispersible Atomatization

#0960


Development of a New Technology for the Freon-free Ultra-dispersible Atomization of Liquid

Tech Area / Field

  • ENV-APC/Air Pollution and Control/Environment

Status
3 Approved without Funding

Registration date
16.04.1997

Leading Institute
MAI (Moscow Aircraft Institute) / Research Institute of Applied Mechanics and Electrodynamics, Russia, Moscow

Project summary

Atomization of liquids, formation of finely pided aerosols and emulsions is a component of many technological processes which is widely applied in overwhelming majority of industries and agriculture. However, energy consumption of modern liquid atomizing devices on overcoming of superficial tension forces is very high. Efficiency of such devices makes only shares of percent. It results in large costs of fuel and electric power, absorbing national resources and worsening ecological conditions. Besides, used in many cases for creation of aerosols Freon as the atomizing agent is destructive to ozone layer of atmosphere.

The existing methods of atomization of liquids and their suspensions are characterized basically by either high-energy consumption, or roughness of atomization. Therefore problem of energy consumption decrease, simultaneously with high-quality liquid atomization is very urgent and requires its resolution.

Scientific novelty of the project

The scientific novelty of the project consists in achievement of significant reduction of energy costs (in 5... 6 times) on ultra-finely pided atomization of viscous liquids, emulsions and suspensions in comparison with existing ways at the expense of use of a new method of atomization by influence of broadband high-frequency acoustic fluctuations on process of atomization. As a result of significant reduction of energy costs there is possible to use in industrial and household aerosol sprays a slightly compressed air instead of Freon and other harmful gases.

Purposes of the project


1. Development of new methods of power efficiency increase of atomizing processes of liquids with various viscosity at the expense of use of non-stationary processes.
2. Achievement of ultra-finely pided atomization of liquids (dm = 8... 12 microns) with minimization of power expenses.
3. Development of designs of the sprays ensuring finely pided atomization at small pressure differences (up to 0,35 MPa).
4. Development of new, ecologically clean, technological process of liquids atomization without application of Freon and other harmful gases.

Scientific and engineering reserve

Conducted by the employees of RIAME MAI and MAI researches of carburetion process in liquid rocket engines and in systems of cosmosol formation have resulted in finding some new processes at formation of diphase media (origination of auto-oscillations at interaction of gas and liquid flows; broadband ultrasonic noise in porous wettable materials, etc.), application of which has allowed essential reducing of energy consumption and increasing of atomization quality. The results of these researches were by a basis for development of a series of new atomization methods and for atomizer constructive schemes, recognized as the inventions and patents (more 40 inventions). In essence, foundation of a new atomization technology of liquids has been laid.

Technical approach and methodology

The basis for the technical approach by realization of the given project is close interrelation of theoretical researches, computer modeling and experimental research of physics of the new phenomena, found out when studying of liquid atomization processes.

The experimental data, earlier obtained at study of dispersion processes of cosmosols and fuel components of rocket engines, will be a basis of drawing up of theoretical models.

At the following stage of works it is projected to perform computer modeling of dispersion processes and to compare received results with the results of physical modeling of the same phenomena. Empirical dependencies obtained by physical modeling will be used for clarification of developed theoretical model with the purpose of reception of an engineering technique of calculation of atomizers, whereby the energy saving atomization of liquids is carried out.

Expected results

As a result of performance of the project is supposed the creation of a new technology of energy saving ultra-finely pided atomization of a liquid and new kind of atomizing devices, which can find wide application in various branches of a national economy, especially in medical, perfumery, agricultural and other branches, including branches, at present letting out production damaging of ozone.

Significance of the project

Scientific: development both the energy saving atomization concept as of a technological process and basic schemes of atomizing systems for various branches of national economy.

Technical: creation of new technology and experienced samples for ultra-dispersible atomization of a liquid, using a slightly compressed air instead of Freon and other harmful gases.

Commercial: the results of the project have significant commercial potential and can make a basis for organization of highly profitable manufacture of new kind of atomizing devices.

Potential role of foreign collaborators

Discussion of results of researches, realization of joint tests and other kinds of scientific contacts during performance of the project, and also possible participation in introduction of results of researches in manufacture.


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