The invention relates to a method for the selective purification of aerosols. The invention consists in electrostatically collecting all of the particles present in an aerosol, but with separation of the mechanisms on one hand for charging particles by unipolar ion diffusion in order to charge and then collect the finest particles, and on the other hand for charging particles by means of Corona discharge in order to charge and then collect the largest particles on a substrate different from the substrate for collecting the finest particles.

An electrostatic precipitator for removing particulates from boiler flue gas, the electrostatic precipitator comprising: discharge electrodes and collecting electrodes fitted in a gas passage, said electrodes being arranged in at least two electrical fields that are placed successively in relation to gas flow, the electrical field establishing at least one electrical unit in transversal direction of said gas passage, the electrical unit constituting a portion of the precipitator having ability to be de-energised independently, separately from the other electrical units of the electrostatic precipitator. The first electrical field of said at last two electrical fields is arranged to be first in said gas flow. The first electrical field comprises more electrical units than a second field following said first field.

The present invention relates to a device for cleaning of indoor air comprising capacitor precipitators (12a, 12b) each consisting of two electrode elements or two groups of electrode elements connected to the respective pole of a high voltage source, air transported fans (13a, 13b), at least one corona electrode (K1, K2) and at least one counter electrode (16a, 16b, 16c), wherein said corona electrode (K1, K2) and said counter electrode (16a, 16b, 16c) are connected each to a pole of a high voltage source. The characteristics of the apparatus of the present invention is that it comprises two air flow ducts (L1, L2) for the air to be cleaned, which air flow ducts (L1, L2) are placed along an axial reference line (AA) at a distance (d) from each other in the direction of the axial reference line (AA), that each air flow duct (L1, L2) is associated with a capacitor precipitator (12a, 12b) and an air moving fan (13a, 13b), that at least one corona electrode (K1, K2) is provided in the space between the air flow ducts (L1, L2), that at least one counter electrode (16a, 16b; 16) is located adjacent to the air flow ducts (L1, L2) circumference, that the air flow direction through the one air flow duct (L1) is diametrically opposite the air flow direction through the second air flow duct (L2) and that the air to be cleaned is passed into the space between the air flow ducts (L1, L2).

Embodiments include systems and methods for integrated control of environmental conditions in an equipment enclosure. For example, a novel airflow inlet structure can be installed into a primary airflow path of the equipment enclosure. The airflow inlet structure can include an integrated electrostatic filter sub-structure and an integrated electromagnetic radiation (EMR) control sub-structure. During operation of equipment within the enclosure, air drawn through the equipment enclosure can flow through the primary airflow path in such a way as to flow through the electrostatic filter sub-structure; and the EMR control sub-structure can control EMR emitted by the equipment, such that EMR leaving the enclosure is attenuated to below a threshold level.

An electrostatic air precipitator for emission remediation including, a grounded frame connected to a housing having an upstream direction and a downstream direction with a first ionizing section, having at least a first set of ionizing members and a second set of ionizing members, where the ionizing members of the first set and the second set are electrically isolated from each other and electrically isolated from the grounded frame. Also, the ionizing members of the first set and the ionizing members of the second set are powered by separate power supplies and at least a first collector section is located downstream of the first ionizing section, and the first collector section has at least a first plurality of collector plates.

An electrostatic air precipitator for emission remediation including, a grounded frame connected to a housing having an upstream direction and a downstream direction with a first ionizing section, having at least a first set of ionizing members and a second set of ionizing members, where the ionizing members of the first set and the second set are electrically isolated from each other and electrically isolated from the grounded frame. Also, the ionizing members of the first set and the ionizing members of the second set are powered by separate power supplies and at least a first collector section is located downstream of the first ionizing section, and the first collector section has at least a first plurality of collector plates.

A filter for an electrostatic precipitator comprising: a plurality of spaced-apart, electrode films having electrical conductivity, arranged to be alternately powered at high and low electrical potentials, each of said electrode films having a leading edge, a trailing edge and two opposing side edges therebetween that extend in the direction of airflow; and first and second pluralities of spaced-apart, rigid isolation members bonded to each of the leading and trailing edges of the plurality of electrode films respectively, wherein each isolation member is bonded, via a substantially continuous, preferably flat, surface thereof, to at least some of said leading or trailing edges, thereby fixing the electrode films in the required spaced-apart arrangement thereof.

Air filtration systems and methods for HVAC units in transport compartments are provided. The air filtration systems and methods described herein use electrostatic forces to capture airborne particles and include a modular design so as to be configured to the space requirements of the transport compartment and reduce air flow resistance. The air filtration system includes one or more modular filtration units. Each of the modular filtration units includes a pre-filter section, an ionizing section and a collecting section.

An electrostatic binning precipitator separates solid particles from gases and vapors and sort the solid particles based upon size, density, or morphology. The electrostatic binning precipitator includes a precharger, electrostatic cells, and optionally a heat exchanger. The precharger applies a negative charge to the solid particles that are then collected in one of the electrostatic cells. Each of the electrostatic cells has an independent power supply that applies a voltage to center negative electrodes that are partially surrounded by grounded concave shells. Lower voltage electrostatic cells collect smaller solid particles and higher voltage electrostatic cells collect larger solid particles. The solid particles are moved from the shells into collection hoppers. Gases and vapors can optionally flow into a heat exchanger that can condense these particles into liquids that are collected in reservoirs. The collected solid particles and liquids can be used for industrial applications or safely disposed.

A boiler system for combusting a fuel in the presence of a gas containing oxygen gas, and a gas cleaning system. The boiler system includes a compression device, a carbon dioxide supply duct operative for forwarding at least a portion of the pressurized carbon dioxide rich flue gas to at least one gas cleaning device.