Control of condensed phase sedimentation using the electric field
Relevance of the work is related to the research of efficiency of using electric field for sedimentation of concrete substances to clean the room of aerosol pollution. Development of methods of ensuring purity of the environment and surface in closed working rooms, especially in the conditions of th...
| Main Authors: | , |
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| Format: | Article |
| Language: | Russian |
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Tomsk Polytechnic University
2019-05-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/1572 |
| Summary: | Relevance of the work is related to the research of efficiency of using electric field for sedimentation of concrete substances to clean the room of aerosol pollution. Development of methods of ensuring purity of the environment and surface in closed working rooms, especially in the conditions of the developing production technologies, medicine and conditions of a person life support, are always actual and timely. The aim of the research is pilot and theoretical study of sedimentation at electric field interaction with particles of fine aerosols; based on the research to develop the effective ways of collecting various harmful substances from air and cleaning working room surface. Research methods: the optical diagnostics of an aerosol based on a method of low-angle dispersion with use of the laser measuring LID-2M complex and technology of laser diffraction (Malvern Spraytec analyzer); the tensometric method of weight measurement; the ejector dispersion method; the method of mechanical crushing of the dispersed powders. Results. The paper demonstrates the charge of aerosol particles at crown category. The authors have carried out the pilot studies of the model substances dispersion affected by the electric field and without it. The values of change in dispersion and mass concentration of the produced aerosol were obtained during the experiment by means of the laser LID-2M measuring machine. It was experimentally determined that the speed of aerosol particles sedimentation affected by the electric field increases several times, but not for all studied substances, large particles of aero force will quicker settle under gravitation. The authors calculated the characteristic speeds arising in the course of aerosol evolution for model substances. The paper introduces the comparative analysis of speeds of particle convective distribution in space, gravitational sedimentation and drift of aerosol cloud particles under electric forces. Based on the analysis it is possible to establish the effectiveness of using the electric field for sedimentation of concrete substance with certain dispersion. The data obtained should be considered as well when designing new installations of electric precipitators. |
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| ISSN: | 2500-1019 2413-1830 |