ES2206018B1 - Continuous removal of solid particles suspended in gases involves capture in electrostatic diffusive precipitator with multiple electrodes - Google Patents
Continuous removal of solid particles suspended in gases involves capture in electrostatic diffusive precipitator with multiple electrodesInfo
- Publication number
- ES2206018B1 ES2206018B1 ES200200855A ES200200855A ES2206018B1 ES 2206018 B1 ES2206018 B1 ES 2206018B1 ES 200200855 A ES200200855 A ES 200200855A ES 200200855 A ES200200855 A ES 200200855A ES 2206018 B1 ES2206018 B1 ES 2206018B1
- Authority
- ES
- Spain
- Prior art keywords
- precipitator
- electrostatic
- diffusive
- particles suspended
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
Description
Procedimiento para la eliminación de partículas sólidas suspendidas en gases mediante un precipitador electrostático-difusivo.Procedure for particle removal solids suspended in gases by means of a precipitator electrostatic-diffusive.
La presente invención se encuadra en los sectores de las tecnologías medioambiental y química.The present invention falls within the sectors of environmental and chemical technologies.
En el mundo industrializado es normal encontrar emisiones gaseosas que además contienen partículas sólidas suspendidas. En muchos casos, las denominadas nanopartículas no se consideran en estas emisiones, hecho que en también muchos casos no debería olvidarse tan fácilmente ya que estas nanopartículas pueden quedar suspendidas en la atmósfera durante periodos largos, pueden ser transportadas a lugares lejanos de su emisión, pueden dar lugar a condensaciones preferenciales de otras sustancias tóxicas gaseosas (incluyendo metales), y por último y debido a su gran difusividad entran con facilidad en las vías respiratorias.In the industrialized world it is normal to find gaseous emissions that also contain solid particles suspended In many cases, the so-called nanoparticles are not consider in these emissions, a fact that in many cases not it should be forgotten so easily since these nanoparticles can remain suspended in the atmosphere for long periods, they can be transported to places far from their emission, they can give place for preferential condensation of other toxic substances soda (including metals), and finally and because of its great diffusivity easily enters the airways.
Considerando las técnicas actuales de sistemas de captación de partículas, por ejemplo los precipitadores electrostáticos, se considera como aceptable una eficiencia de captación sobre el 95%. Sin embargo, al disminuir el tamaño de partícula, la probabilidad de carga eléctrica de las mismas disminuye de forma muy apreciable (por ejemplo, para una partícula de 10 nanometros no es superior al 5%). Esto significa que una gran proporción de estas nanopartículas penetran el precipitador sin ser capturadas y son emitidas a la atmósfera.Considering current systems techniques of particle uptake, for example precipitators electrostatics, an efficiency of uptake over 95%. However, by decreasing the size of particle, the probability of electric charge of the same decreases very appreciably (for example, for a particle 10 nanometers is not more than 5%). This means that a great proportion of these nanoparticles penetrate the precipitator without being captured and emitted into the atmosphere.
El movimiento browniano que caracteriza a estas
partículas hace que estas puedan ser interceptadas (capturadas) por
cualquier obstáculo físico con el que se encuentre la corriente
gaseosa que las con-
tiene.The Brownian movement that characterizes these particles means that they can be intercepted (captured) by any physical obstacle with which the gaseous current that meets them is encountered.
have.
Teniendo en cuenta ambas consideraciones, la presente Patente de Invención presenta un procedimiento para la captura de estas partículas (incluidas nanopartículas) empleando un novedoso sistema que combina, de forma simultánea, las deposiciones electrostática y difusiva. Si bien existe un considerable número de documentos científicos y técnicos relacionados con los precipitadores electrostáticos, tanto en forma de patentes como de artículos publicados en revistas especializadas, no se ha encontrado ninguno que verse sobre la combinación de precipitación electrostática y deposición por difusión para la mejora de la eficacia de captación de partículas nanométricas suspendidas en corrientes gaseosas.Taking into account both considerations, the This Patent of Invention presents a procedure for the capture of these particles (including nanoparticles) using a new system that combines depositions simultaneously electrostatic and diffusive. While there is a considerable number of scientific and technical documents related to electrostatic precipitators, both in the form of patents and of articles published in specialized magazines, not found none to be seen about the combination of precipitation electrostatic and diffusion deposition for the improvement of capture efficiency of nanometric particles suspended in gaseous streams
La presente invención describe un procedimiento para la captura de partículas suspendidas en gases mediante el empleo de un precipitador electrostático-difusivo cuyo esquema básico se muestra en la Figura única. Este precipitador consiste en un cilindro interno, construido en un material aislante, que contiene una serie de anillos metálicos, conectados a tierra, entre cada dos de los cuáles y en contacto con ellos se coloca una malla metálica. El cilindro de material no conductor presenta una serie de orificios, uno para la entrada de la corriente gaseosa y los restantes para insertar otros tantos electrodos de acero inoxidable, cada uno de ellos conectado a su correspondiente fuente de alto voltaje de corriente continua.The present invention describes a process for the capture of particles suspended in gases by means of use of an electrostatic-diffusive precipitator whose basic scheme is shown in the single figure. This precipitator consists of an internal cylinder, built in a insulating material, which contains a series of metal rings, grounded, between each of which and in contact with They put a metal mesh. The material cylinder does not driver presents a series of holes, one for the input of the gas stream and the remaining ones to insert as many stainless steel electrodes, each connected to its Corresponding high voltage DC source.
En el procedimiento, la corriente gaseosa que contiene las partículas atraviesa el dispositivo mencionado arriba y mediante la aplicación de un determinado voltaje y la colocación de determinadas mallas metálicas, se logra la captura eficiente de las partículas, incluidas las de tamaño nanométrico.In the procedure, the gas stream that contains the particles through the device mentioned above and by applying a certain voltage and placing of certain metal meshes, the efficient capture of the particles, including those of nanometric size.
En la presente invención se aprovechan las características operacionales del precipitador electrostático-difusivo para la captura eficiente de partículas, en un amplio intervalo de tamaño, hasta de incluso 3 nanometros de diámetro, presentes en gases.The present invention takes advantage of operational characteristics of the precipitator electrostatic-diffusive for efficient capture of particles, in a wide size range, up to even 3 nanometers in diameter, present in gases.
A continuación se describe el procedimiento objeto de la presente invención, haciendo referencia a la Figura única que representa al precipitador electrostático-difusivo.The procedure is described below. object of the present invention, referring to the Figure unique representing the precipitator electrostatic-diffusive.
Una corriente gaseosa que contiene partículas eléctricamente neutras y con diámetros entre 3 y 100 nanometros se hace entrar (1) al precipitador electrostático-difusivo, pasando entre los electrodos (E) y llegando al sistema de mallas metálicas (M) interiores del precipitador; de forma simultánea a la entrada de gas, se aplica a los electrodos un tensión comprendida entre 4 y 9 kV. La aplicación de este procedimiento permite obtener una corriente gaseosa en la salida (0) del precipitador prácticamente exenta de partículas.A gaseous stream containing particles electrically neutral and with diameters between 3 and 100 nanometers it brings in (1) the precipitator electrostatic-diffusive, passing between electrodes (E) and reaching the metal mesh system (M) precipitator interiors; simultaneously to the entry of gas, a voltage between 4 and 9 is applied to the electrodes kV The application of this procedure allows to obtain a gaseous stream at the outlet (0) of the precipitator practically free of particles.
Se partió de una corriente gaseosa que contenía partículas con tamaños entre 3 y 100 nanometros de diámetro, esta corriente gaseosa se hizo pasar (con una velocidad de 1 m/s) por el precipitador electrostático-difusivo que contenía 10 mallas de aluminio, situadas la primera a 5 mm de las puntas de los electrodos, aplicándose de forma simultánea una tensión de 5.5 kV. En la corriente gaseosa de salida, la eficacia en la captura de las partículas fue superior al 98%, incluso para las de 3 nanometros de diámetro.It started from a gas stream that contained particles with sizes between 3 and 100 nanometers in diameter, this gas stream was passed (with a speed of 1 m / s) through the electrostatic-diffusive precipitator that contained 10 aluminum meshes, located the first 5 mm from the tips of the electrodes, applying a voltage of 5.5 simultaneously kV In the gaseous outflow, the efficiency in capturing the particles were greater than 98%, even for those of 3 nanometers in diameter.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200200855A ES2206018B1 (en) | 2002-04-11 | 2002-04-11 | Continuous removal of solid particles suspended in gases involves capture in electrostatic diffusive precipitator with multiple electrodes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200200855A ES2206018B1 (en) | 2002-04-11 | 2002-04-11 | Continuous removal of solid particles suspended in gases involves capture in electrostatic diffusive precipitator with multiple electrodes |
Publications (2)
Publication Number | Publication Date |
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ES2206018A1 ES2206018A1 (en) | 2004-05-01 |
ES2206018B1 true ES2206018B1 (en) | 2005-07-16 |
Family
ID=32309600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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ES200200855A Expired - Fee Related ES2206018B1 (en) | 2002-04-11 | 2002-04-11 | Continuous removal of solid particles suspended in gases involves capture in electrostatic diffusive precipitator with multiple electrodes |
Country Status (1)
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ES (1) | ES2206018B1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4230466A (en) * | 1979-05-10 | 1980-10-28 | Santek, Inc. | Discharge electrode structure for electrostatic precipitator |
DK0703005T3 (en) * | 1994-09-21 | 2000-05-08 | Allrad No 28 Pty Ltd | An electrostatic precipitator |
JP3191264B2 (en) * | 1997-02-27 | 2001-07-23 | ギャラクシー有限会社 | Electric dust collector and incinerator |
RU2120337C1 (en) * | 1997-05-06 | 1998-10-20 | Институт сильноточной электроники СО РАН | Electrostatic precipitator of finely dispersed powders |
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2002
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Also Published As
Publication number | Publication date |
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ES2206018A1 (en) | 2004-05-01 |
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