Abstract:
The invention relates to a system of cyclones with electrostatically enhanced recirculation, comprising a collector cyclone (Col) with diameter D1 and an entry for dirty gases (GS), located upstream from a recirculator (Con) with diameter D2 and a central channel for exhausting the cleaned gases (GL), these cyclones being placed in series and having a recirculation line, from the concentrator to the collector, to recirculate part of the gas stream. It is characterized in that there are means, in the recirculator, for applying a high voltage (AT, ) producing an ionizing electric field that drives the particles away from the central exhaust channel, without any significant particle deposition on the recirculator walls. The current density in the recirculator field is below 0.1 mA/m2 and the average electric field is below 2xl05 V/m. According to the process of the invention, the particles are driven away from the central exhaust channel, in the recirculator, by the joint action of mechanical and electrical forces, these latter deriving from the particles traversing the ionized field, concentrating them in the fraction of the gas stream that is recycled back to the collector cyclone, where a part is captured (P). It is used for dedusting and dry gas cleaning, especially for acid gases, and for capturing bacteria.
Abstract:
Provided are an air purifier and an air conditioner including the same. The air purifier includes a ground electrode part, a discharge electrode, at least a pair of magnetic force generators, and a voltage generator. The ground electrode part has at least a pair of flat plates. The discharge electrode is located between the flat plates and separated from the flat plates. The at least a pair of magnetic force generators is provided to the flat plates, respectively, to generate a magnetic field and allow attractive force to be applied between the flat plates. The voltage generator applies a voltage between the ground electrode part and the discharge electrode.
Abstract:
The disclosed electrostatic precipitator cartridge for a tower air cleaner in accord with the present invention is low-cost, because constructed of injected molded plastics material and stamped and extruded metal components. It is easy to clean, not only because it's constitutive metal parts and plastic components are machine washable but also because the cartridge as a whole is machine washable, the pieces and components are designed and arranged to prevent intracartridge fluid buildup or retention after washing, thereby eliminating any electrical shorting or arcing or other undesirable phenomena resulting therefrom that could interfere with the operation of the electrostatic filter cartridge. It is mechanically stable and has high particulate collection efficiency because it's ionizer bars have a predetermined preferably air foil shape that provides improved ionization efficiency and that imparts improved torsion stability rendering it possible to provide taller electrostatic filter cartridges and/or greater cleaning power.
Abstract:
The present invention relates to the use of corrosion, temperature and spark resistant electrically conductive components in wet electrostatic precipitator systems (WESPs). In particular, the present invention is directed to using a conductive composite material in the fabrication of wet electrostatic precipitator system components.
Abstract:
An improved ventilating range hood includes a sheet metal collecting hood, vented to the outdoors; a variable speed, electronically controllable fan, mounted in such a way as to draw air from a cooking area and out through said vent of said collecting hood; a plurality of air quality sensors capable of detecting both comfort factors and the presence of hazardous substances in the air; an embedded control algorithm which examines the composite output of said discrete air quality sensors, as well as, the trend information and determines from said information an instantaneous ventilation requirement, and a control signal, derived from said algorithm to regulate the fan speed level such that every combination of discrete air quality sensor conditions will have a unique associated fan speed level based on said ventilation requirement. The air quality sensors may include sensors for temperature, humidity, carbon monoxide, smoke, etc.
Abstract:
Air conditioning and cleaning apparatus, which comprises at least one air inlet point (11), an air outlet point (12), an ionisation device (2) for ionising the particles contained in the incoming air and at least one heat exchanger device (4) 5 with at least one surface (41) which acts as a surface for collecting ionised particles. The apparatus comprises a controller (9) which regulates operation of the heat exchanger device (4) so that condensed water forms on the surface (41) of said heat exchanger device and cleans said surface of the heat exchanger device, 10 preventing saturation with particles collected by the surface of the heat exchanger device.
Abstract:
An electrostatic fluid acceleration and method of operation thereof includes at least two synchronously powered stages with final or rear-most electrodes of one stage maintained at substantially the same instantaneous voltage as the immediately adjacent initial or forward-most electrodes of a next stage in an airflow direction. A single power supply or synchronized and phase controlled power supplies provide high voltage power to each of the stages such that both the phase and amplitude of the electric power applied to the corresponding electrodes are aligned in time. The frequency and phase control allows neighboring stages to be closely spaced at a distance of from 1 to 2 times an inter-electrode distance within a stage, and, in any case, minimizing or avoiding production of a back corona current from a corona discharge electrode of one stage to an electrode of a neighboring stage. Corona discharge electrodes of neighboring stages may be horizontally aligned, complementary collector electrodes of all stages being similarly horizontally aligned between and horizontally offset from the corona discharge electrodes.
Abstract:
The invention concerns an electrostatic filter (1) for filtering small particles from a gas flowing through the filter, the filter comprising a frame (2), an array of parallel electrically conducting wires (8) between a first (3) and a second (4) mounting element, both mounting elements being connected to the frame, a number of flat parallel electrically conducting structures (11) interleaved within the wires and being connected to the frame, wherein an electrical insulation (12) is located between the mounting elements and the electrically conducting structures, a voltage source (22) connectable with the conducting wires and the conducting structures for application of a voltage between the conducting wires and the conducting structures, wherein at least one of the mounting elements is connected to the frame via an adjustable connection member (6, 17) to adjust the distance between the frame and the mounting element. The invention also concerns a method of constructing such a filter.
Abstract:
An electrode shield is disclosed. The shield comprises an elongate conduit having a passageway for receiving an electrode, which extends between an entrance aperture disposed at a proximal end of the conduit and an exit aperture disposed at a distal end of the conduit. The electrode shield further comprises a shroud disposed at a distal end of the conduit for receiving a distal portion of an electrode, the shroud comprising a base and a side wall which extends from the base and which terminates at an open, distal end of the shroud to form an enclosure. The base comprises an opening formed therein which is aligned with the exit aperture of the passageway, such that the electrode can pass from the conduit into the shroud. The passageway comprises a cross-sectional area which is less than a cross-sectional area of the enclosure, such that the shroud maintains a minimum separation of the distal portion of the electrode from electrically conducting surfaces.
Abstract:
一种用于净化火力发电厂尾气的装置,其特征在于,所述装置具有冷却物流动通道(14)和尾气流动通道(15),所述装置还包括用于间隔所述冷却物流动通道(14)和所述尾气流动通道(15)并用于在所述冷却物流动通道(14)和所述尾气流动通道(15)之间交换热量的间隔部件(12),所述间隔部件(12)具有用于收集所述尾气中尘和/或雾的尾气接触面;冷却物流动通道(14)内流有冷却物,使得热尾气析出的冷凝水均匀地附着在尾气接触面上,形成了均匀、稳定的水膜:一方面,避免在集尘板上形成浓H 2 SO 4 ,同时,液膜在重力作用下向下流动,从而及时清洗附着在集尘板上的H 2 SO 4 ;另一方面,水膜对雾滴的拦截和粉尘的捕捉具有非常显著的效果。