An electrostatic precipitator is provided capable of preventing a reduction in dust collection effect of ionic wind, and increasing dust collection efficiency. The electrostatic precipitator includes: a plurality of collecting electrodes (4) in the form of circular pipes arranged at predetermined intervals in a direction orthogonal to a longitudinal direction of the electrodes; and a plurality of protrusions (5a) protruding toward the collecting electrodes (4) and arranged offset in parallel with the orthogonal direction. An equivalent diameter of a cross section of the collecting electrode (4) is 30 mm to 80 mm. An opening ratio of the collecting electrodes (4) arranged at predetermined intervals is 10% to 70%.

An image forming apparatus includes a flow passage associated with a direction of flow and a particle collecting device including a filter to collect particles in a fluid passing through the flow passage in the direction of flow. The flow passage includes a curved portion, and a distribution in particle collecting performance of the filter in a direction perpendicular to the direction of flow results from the curved portion of the flow passage.

The present disclosure envisages an air purification system. The system includes a shell, a blower, an electrode and a plurality of spikes. The shell has electrically-grounded wall(s), an inlet, and an outlet. The blower generates flow of air through the shell. The electrode is fitted within the shell between the inlet and the outlet and is electrically isolated from the shell body. The spikes extend from the electrode. The spikes have tips spaced apart from the inner surfaces of the walls and generate a corona between the tips and the inner surface of the walls when an high voltage electric current is passed through the electrode and thereby ionize gases and charge particles present in the air resulting in the particles being deposited on the inner surface of the walls of the shell.

An electrostatic precipitator (1) to precipitate one or more materials (9) out of an exhaust gas flow (5) has a spray electrode (2) having an active part (14) for generating a corona discharge (6) and a flushing liquid supply (21), by means of which flushing liquid (10) is supplied into the precipitator (1) for removing deposits (11), made of the material(s) (9) to be separated, that settle on the spray electrode (2). The precipitator (1) uses less cleaning liquid and the cleaning is carried out more reliably. For this purpose, a flushing device (8) directs the flushing liquid (10) across a head region (12) of the spray electrode (2) onto the active part (14) of the spray electrode (2) as a flushing stream (22).

An example of a system for use in collecting fluid from a gas stream includes one or more collection panels and a frame for arranging the panel(s). Each of the collection panel(s) may comprise an emitter electrode assembly member, comprising one or more emitter electrodes, physically attached to an electrically insulated from a fluid collection member comprising one or more collection electrodes. The frame may be sized and shaped to be disposed near a gas outlet or a duct. An example of a method for collecting fluid from a gas stream includes providing the collection panel(s) disposed in a path of the gas stream; providing the gas stream; generating and maintaining a voltage at the one or more emitter electrodes of each of the collection panel(s); and collecting an amount of the fluid from the gas stream with the one or more collection panels.

A disclosed system for reducing particulate matter in exhaust gas includes: a processing object unit having a preset system voltage and configured to produce exhaust gas containing particulate matters (PMs); a first conductor provided in the form of a tubular body in which the exhaust gas flows and to which a ground power supply is connected; a second conductor disposed in the first conductor and having an emitter which comes into contact with the exhaust gas and generates non-thermal plasma (NTP); an insulator configured to electrically separate the second conductor from the first conductor; and a transformer provided to be electrically insulated from the first conductor and fixedly disposed outside the tubular body that constitutes the first conductor, the transformer being configured to receive the system voltage, raise the system voltage to a preset operating voltage, and apply the preset operating voltage to the second conductor.

Embodiments of the invention involve the application of a disk-in-tube type of wet or dry ESP (electrostatic precipitation) technology for the capture/removal of airborne particles entering a gas turbine compressor. This provides an effective method of particulate removal without the inefficiencies associated with conventional filtering techniques. Embodiments of the innovative approach also eliminate the inlet airstream blocking effect of a conventional filter, thus making its use and operation adaptable to different operating environments and processes that require clean input air streams (including industrial manufacturing processes, power generators, combined turbine and fluid recapture systems for use in heating and cooling, etc.).

An electronic air cleaner includes a control housing including an ion generation device and a brush array having at least one brush assembly extending therefrom. The brush array is connectable to the control housing in both a first configuration and a second configuration.

An improved electrode for use in an electrostatic precipitator is disclosed. The electrode comprises a generally rod-shaped conductive central portion, to which are attached a plurality of conductive disc-shaped elements. Each disc-shaped element has a number of sharp points spaced around its circumference and a plurality of openings near its center. The central portion of the central portion passes through the centers of each of the plurality of disc-shaped elements such that the disc-shaped elements are located parallel to one another along the central portion, and may be equally spaced along the central portion. The disc-shaped elements are conical or convex in shape, and oriented with their rims raised above their centers so that any water that collects on them runs out through the openings and down the central portion of the electrode. This greatly reduces or eliminates arcing between the electrode and a collector in the electrostatic precipitator.

A variable bidirectional electrostatic filter system with an adjustable distance between a charging part and a dust collecting part is provided herein and includes a high voltage applying means configured to supply a high voltage; a filter housing; a dust collecting part; a forward charging part; a reverse charging part; a forward movement rail installed in the filter housing and configured to adjust a distance from an amplification section while forming the amplification section between the forward charging part and the dust collecting part; a reverse movement rail installed in the filter housing; and a control unit providing an amplification section, in which the charged capturing targets are agglomerated, between the charging part and the dust collecting part and by adjusting the distance from the amplification section prevents unnecessary waste of energy and maintain dust collecting efficiency.