Abstract: An emissions reduction stack includes a conditioning section, collector section utilizing a Wet Electrostatic Precipitator (WESP), and output section. A chemically active aqueous stream is introduced into an incoming process stream in order to saturate the stream and produce a fog stream wherein water is condensed on the surface of particulates. The process of condensation increases the efficiency of the particulate filtration process conducted by the WESP.

Abstract: A device for collecting particles that have a high electron affinity, particularly explosive particles, from a gas, includes a flow channel (12a) in which at least one electrically positive collector electrode (20a) and at least one ionising electrode (18a) are arranged, between which an electrical field is present so that the particles having high electron affinity can be indirectly charged by corona discharge on the ionising electrode (18a) and can be displaced towards the collector electrode (20a).

Abstract: An emissions reduction slack includes a conditioning section, collector section utilizing a Wet Electrostatic Precipitator (WESP), and output section. A chemically active aqueous stream is introduced into an incoming process stream in order to saturate the stream and produce a fog stream wherein water is condensed on the surface of particulates. The process of condensation increases the efficiency of the particulate filtration process conducted by the WESP.

Abstract: In an electric device (1), an air inlet (3),a gas-liquid contact portion (5), a water collecting portion (6) and an air outlet (7) are arranged in sequential order from upstream of an air duct (2). In a water storage portion (8) the gas-liquid contact portion (5) is dipped and the water collected thereby is stored. An electrolyzing portion (9) generates the electrolyzed water (4) containing an active oxygen species by electrolyzing the water stored in the water storage portion (8). As a result, a compact electric device with an air cleaning function is provided at low cost that is capable of generating water containing an active oxygen species without requiring additional water feed and without generating a by-product.

Abstract: A method and apparatus are provided for reducing quench water required by a wet electrostatic precipitator. The apparatus includes a wet electrostatic precipitator and an evaporator in flow communication with the wet electrostatic precipitator to evaporate at least one portion of bleed water discharged from the wet electrostatic precipitator into steam. The method includes directing at least one portion of bleed water discharged from the wet electrostatic precipitator to an evaporator and directing at least one portion of flue gas from a boiler to the evaporator. The energy of the at least one portion of flue gas is used to evaporate the at least one portion of the bleed water into steam. The steam is directed to the wet electrostatic precipitator. The at least one portion of flue gas is directed from the evaporator to the wet electrostatic precipitator.

Abstract: A method and apparatus are provided for reducing waste effluent from a system including a boiler and a wet electrostatic precipitator, the waste effluent having blow down water discharged by the boiler during a blow down operation and bleed water discharged by the wet electrostatic precipitator. The method includes collecting the blow down water and providing it to the wet electrostatic precipitator as a makeup water supplement, evaporating a portion the bleed water and leaving residual bleed water, providing the evaporated bleed water to the wet electrostatic precipitator as a further makeup water supplement, and using the residual bleed water to quench ash produced by combustion of solid fuel by the boiler. The apparatus includes an evaporator that provides direct contact between hot boiler flue gas and the bleed water such that a portion of the flue gas is quenched before being provided to the wet electrostatic precipitator.

Abstract: The invention discloses a sterilization device (1), to sterilize media, equipment and/or decontamination of waste material, said sterilization device (1) comprising a chamber (2), at least one exhaust line (6) arranged to said chamber (2) and at least one gas generator arranged to said chamber (2), at least two sterile filters (8a, 8b) arranged in series in the exhaust line (6), at least one vacuum means (7) connected to the chamber (2) via said exhaust line (6) and said at least two filters (8a, 8b). At least one heating means (9) is arranged to said exhaust line (6) between said two sterile filters (8a, 8b) in order to vaporize condensate that develops between the filters. Furthermore, it is disclosed a sterilization process for sterilization of media, equipment and/or decontamination of waste material, a vaporizing system (12) of a sterilization device and use of such a vaporizing system (12) in a sterilization device.

Abstract: An emissions reduction stack comprises a conditioning section, collector section utilizing a Wet Electrostatic Precipitator (WESP), and output section. A chemically active aqueous stream is introduced into an incoming process stream in order to saturate the stream and produce a fog stream wherein water is condensed on the surface of particulates. The process of condensation increases the efficiency of the particulate filtration process conducted by the WESP.

Abstract: A method and apparatus are provided for reducing waste effluent from a system including a boiler and a wet electrostatic precipitator, the waste effluent having blow down water discharged by the boiler during a blow down operation and bleed water discharged by the wet electrostatic precipitator. The method includes collecting the blow down water and providing the collected blow down water to the wet electrostatic precipitator as a makeup water supplement, evaporating a portion the bleed water and leaving residual bleed water, providing the evaporated bleed water to the wet electrostatic precipitator as a further makeup water supplement, and using the residual bleed water to quench ash produced by combustion of solid fuel by the boiler. The apparatus includes an evaporator that provides direct contact between hot boiler flue gas and the bleed water such that a portion of the flue gas is quenched before being provided to the wet electrostatic precipitator.

Abstract: A method and apparatus are provided for reducing significantly or to zero the waste effluent from a system including a boiler and a wet electrostatic precipitator, the waste effluent comprising blow down water discharged by the boiler during a blow down operation and bleed water discharged by the wet electrostatic precipitator. The method comprises collecting the blow down water, providing the collected blow down water to the wet electrostatic precipitator as a makeup water supplement, evaporating a portion the bleed water and leaving residual bleed water, providing the evaporated bleed water to the wet electrostatic precipitator as a further makeup water supplement, and using the residual bleed water to quench ash produced by combustion of solid fuel by the boiler. The apparatus includes an evaporator that provides direct contact between hot boiler flue gas and the bleed water such that a portion of the flue gas is quenched before being provided to the wet electrostatic precipitator.

Abstract: An apparatus for producing water and dehumidifying air is described. The apparatus causes moisture in an incoming air stream to combine with seed water to remove moisture from the incoming air stream, and may be used to generate water from air, dehumidify air, cool air, and the like. The ability to generate water from air has global importance as the need for clean water increases each year. The apparatus for producing water and dehumidifying air uses high voltage but extremely low current, allowing for both safe and energy efficient operations. The apparatus for producing water and dehumidifying air uses a vessel containing seed water, a bubbler immersed in the seed water, a high voltage source connected to a lower electrode and an upper electrode connected to the negative side of the high voltage source. An airflow path travels through the apparatus and water molecules are extracted from the air as it passes through the apparatus.

Abstract: A method for efficiently removing vapor-phase contaminants from gas streams is described. A powdered adsorbent such as activated carbon is ground into a fine powder by wet grinding to form a slurry. Chemicals are added to the slurry to impregnate the sorbent to enhance sorbent effectiveness. The slurry chemical mixture is sprayed into the gas stream in the form of small droplets which evaporate to produce an aerosol of fine adsorbent particles. Vapor-phase contaminants in the gas stream adsorb onto the fine adsorbent particle surfaces and the adsorbent particles are removed from the gas stream by a conventional particle collection method.

Abstract: The method and apparatus of the present invention are directed to conditioning particulate-containing gas streams using novel additives. The additive is an organometallic salt, preferably of a carboxylic acid, that decomposes in the gas stream to produce mobile metal compounds that significantly reduce the resistivity of the particles. The additive is particularly effective under hot-side conditions when used to condition particles to be collected by an electrostatic precipitator.

Abstract: Apparatus and method for separating carbon particles from flyash includes one of increasing a relative humidity of the flyash or decreasing the relative humidity of the flyash to within an optimum humidity range, and introducing the flyash within the optimum humidity range into a triboelectric separator so as to triboelectrically charge the carbon particles and the flyash and so as to electrostatically separate the charged carbon particles from the charged flyash.

Abstract: An air pollution control system using a novel control system is disclosed. The control system is particularly useful with a gas conditioning tower ("GCT") which uses a spray from a two-fluid nozzle to cool hot process gases prior to flowing to an electrostatic precipitator. A first control loop, employing, for example, a temperature feedback control system, is used during normal operation of the system, and an override control loop is used to protect the electrostatic precipitator from overheated gases which may be diverted in the case of a plant upset. The override control loop adjusts the spray based on a calculation of the spray characteristics needed to meet the new GCT conditioning requirements. In another aspect the present invention relates to a method and apparatus for optmizing the spray from a two-fluid nozzle used in a GCT. In particular, the spray droplets are made larger when possible, thereby reducing the energy usage of the system.

Abstract: The present invention discloses a process for removing undesired particles from a gas stream including the steps of contacting a composition containing an adhesive with the gas stream; collecting the undesired particles and adhesive on a collection surface to form an aggregate comprising the adhesive and undesired particles on the collection surface; and removing the agglomerate from the collection zone. The composition may then be atomized and injected into the gas stream. The composition may include a liquid that vaporizes in the gas stream. After the liquid vaporizes, adhesive particles are entrained in the gas stream. The process may be applied to electrostatic precipitators and filtration systems to improve undesired particle collection efficiency.

Abstract: Disclosed is an improved system for treating boiler flue gas to improve the removal of particulate matter contained therein by electrostatic precipitation.

Abstract: A method and system for disinfecting air in ventilation ducts, using a non-poisonous and substantially non-volatile disinfectant. The disinfectant is vaporized by micro-vaporizer, and ionization electrodes ionize the air and the disinfectant particles. An ozone sensor is located downstream of the ionization electrodes and emits a signal to a controller, which controls the voltage at the ionization electrode, and thus the production of ozone is controlled.

Abstract: A flue gas conditioning system uses the waste heat of the flue gas to heat a sulfuric acid solution to add sufficient heat energy to the solution to vaporize the solution before being injected into the flue gas to condition the flue gas so that particulate removal by a precipitator is enhanced.