Abstract: An apparatus for continuously supplying air into an indoor space is disclosed. The apparatus includes a sunlight collector for activating carbon dioxide contained in the air by irradiating sunlights thereto, a reservoir for storing and discharging the activated carbon dioxide, the reservoir holding a reaction solution capable of exchange reaction with the carbon dioxide and a unit for reducing the carbon dioxide concentration in the air to a level non-hazardous to a human body. The apparatus may further include an infrared radiation lamp that can produce infrared rays to maintain the electric conductivity of the reaction solution within a preselected range at night or under bad weather conditions. A method is provided whereby atmospheric air passes through the reservior to undergo exchange reactions with the reaction solution. The method produces atmospheric air containing carbon dioxide molecules in a higher energy state, and directs the air toward the indoor space.

Abstract: In order to separate and remove a dangerous substance such as yellow phosphorus from exhaust gas generated in a semiconductor fabricating process by chemical vapor deposition, the exhaust gas is bathed in operating oil of a cooled oil tank of an oil-sealed rotary vacuum pump so that molecules of the yellow phosphorus or the like are caught by the cooled operating oil so as to be enveloped in the operating oil. Thus, a mixture operating oil of the substance and the operating oil is generated in the form of colloid. The mixture operating oil is passed through an oil filter of a filtration device so that the substance such as yellow phosphorus is precipitated by the filter and then the substance is removed. Meanwhile, the operating oil as a filtrate from which the substance has been filtered is cooled by an oil-temperature controller, and then returned to the oil-sealed rotary vacuum pump.

Abstract: A method for removing volatile organics from landfill gas, in which the landfill gas, which consists primarily of methane and contains volatile organic components, is passed through a quantity of liquid tetraglyme to cause the volatile organic components to be absorbed in the tetraglyme.

Abstract: A liquid seal for installation upstream of a flare stack or of a waste gas combustion installation to protect against flashback and to function as a pressure lock. During the operation of the seal, liquid is ejected upwardly from an inner annular chamber by a gas stream, and the ejected liquid is separated from the gas by a baffle plate and deflector arrangement so that the gas and liquid stream is directed downwardly, and a liquid film is formed which is broken down into individual streams by baffles. The gas escapes upwardly from the liquid seal in spaces between the streams of downwardly flowing liquid without entraining significant amounts of liquid. The downwardly directed liquid is collected in an outer annular chamber and flows into the inner annular chamber through a return opening to provide a constant circulation of liquid in the liquid seal.

Abstract: A dissipator for percolating a mixture of flue gases and powdered lime through a body of water to remove SO.sub.2 from the flue gases includes an elongate tubular body having first and second ends. The first end of the tubular body has an inlet through which the flue gases and lime mixture is introduced into the dissipator. The second end of the tubular body is generally closed. There are a plurality of perforations in the wall of the tubular body through which the mixture of lime and flue gases can escape from the dissipator. A plurality of disrupters spaced longitudinally inside the elongate tubular body facilitate the mixing and reaction of the lime and the flue gases. Each disrupter comprises a plate with a plurality of baffles mounted on the upper thereof to facilitate the mixing of the flue gases and powdered lime mixture delivered into the dissipator.

Abstract: A vortex system for separating particles of varied size and density from a liquid stream. A particle bearing liquid is introduced tangentially into one end of an elongated cylindrical chamber to form a rotating liquid vortex therein. An impeller at one end of the chamber reinforces the vortex flow. Either a series of tangentially oriented jets introducing a gas or a gas saturated liquid through the chamber wall or a rotating central chamber section further increases the vortex rotational flow. The vortex produces a heavy particle rich outer region, a gas and light particle rich axial region and a cleaned liquid annular region therebetween. The cleaned liquid flows out of the chamber through an outlet at the chamber end opposite end at which the particle bearing liquid is introduced. The heavy particles in the outer region and the gas and light particles in the axial region are each removed through an outlet. A variety of component orientations and auxiliary devices may be used to optimize system operation.

Abstract: An impurity scavenging system which scavenges impurities of off-gases discharged from a clean room of a production line for semiconductors. The impurity scavenging system has a gas introduction line through which gas to be processed (hereinafter referred as GSP) is discharged, a scavenging unit which stores scavenging liquid, a condenser for condensing vaporized liquid from the scavenging unit, a first pump which pumps the GSP of a discharging line connected with the downstream side of the condenser, a liquid source, a cleaning liquid line which connects the discharging line to a drain and a first valve having ports, including a first port connected with the condenser, a second port connected with the first pump, and a third port connected with one end of the cleaning line another end of which is connected to the drain, thereby selectively enabling a connection from the condenser to the first pump and a connection from the condenser to the cleaning line.

Abstract: An apparatus for handling exhaust gases, such as diesel exhaust, which cools the exhaust gases as the gases exit a diesel engine, and then filters such gases to remove particulate material. A housing has an inlet pipe with perforations and a filling of a liquid through which gas bubbles as it exits the perforations in the inlet pipe. The gas bubbling through the liquid cools the gases. In order to maintain the bubbles at a desired size, a perforated or porous layer of material is provided in the liquid so that gas moves through the perforated layer before it exits the liquid. Preferably the gas exiting the liquid is then passed through a filter which is maintained in a wet condition by mist carried by the gases that is formed as the gases burst through the surface of the liquid. The fibers of the filter are maintained wetted so that particles of material do not adhere to the fibers and can be flushed therefrom.

Abstract: In a method of cooling and scrubbing a hot gas a hot gas is supplied with a removal pipe into a scrubber. The hot gas is introduced into at least one liquid bath of the scrubber. The hot gas is forcibly dispersed to form small bubbles over at least a portion of a flow path of the hot gas through the liquid bath. The exterior of the removal pipe is cooled with liquid to be introduced into the liquid bath by guiding the liquid along the exterior of the removal pipe countercurrent to the flow of the hot gas in the removal pipe. The device for performing the method has at least one liquid bath. A removal pipe for removing hot gas from the combustion chamber and guiding it to the liquid bath is provided. At least one flow divider with a plurality of openings is arranged in the flow path of the hot gas. A gas removal device is positioned above the liquid bath for removing the cooled gas exiting from the liquid bath.

Abstract: A method and apparatus for forming sheets of a first material, such as a metal, plastic, rubber, or the like, having a primary tank for heating a second molten material and containing the second molten material to form a surface upon which the first material is floated in a molten state. The temperature of the second molten material is maintained below the melting temperature of the first molten material, and the second molten material has a higher specific gravity than the first molten material. Thus, the first molten material floats upon the surface of the second molten material while it solidifies into a sheet of material, which is then withdrawn from the surface of the second molten material. A hood is disposed over the primary tank to remove fumes and vapors which, when removed, are discharged into water where they condense.