Abstract: A method and apparatus for heat treating objects in an enclosure, where the enclosure has an inlet passage, an outlet passage, and a treatment zone. Gaseous first fluid is injected into the treatment zone and the objects to be treated are passed through the treatment zone. A second fluid, with a density greater than that of the first fluid, is injected near the inlet and outlet passages.

Abstract: A gas control device for a fiber cooling system includes an inner fiber flow passage extending in a longitudinal direction of the device to facilitate travel of a fiber through the device. The device further includes a chamber that is separated from and at least partially surrounds the inner fiber flow passage, a flow stabilizer region that facilitates and controls gas flow between the inner fiber flow passage and the chamber, and a gas flow port in fluid communication with the chamber to facilitate withdrawal of gas from the inner fiber flow passage into the chamber and removal of the withdrawn gas from the chamber and the device during travel of the fiber through the device.

Abstract: Treatments for input fluids involve contacting a treatment fluid with the input fluid while maintaining substantial separation of the fluids. This contacting occurs in a reaction vessel having the treatment fluid disposed on one side of a porous metal membrane and the input fluid disposed on the other side of the porous metal membrane. Treatments can include disinfection and preservation of the input fluid and/or extraction of solutes from the input fluid.

Abstract: This disclosure discusses the problems associated with preservation of food products while avoiding undesirable high pressures, additives, or other chemical treatments. The disclosed invention will reduce spoilage in food products, particularly liquid food products, by removing oxidants, enzymes, and killing bacteria without using heat or undesirable additives. The process of the invention uses a combination of moderate pressure and reactive gases, such as hydrogen, carbon dioxide, or nitrous oxide to treat food products, and then removes the reactive gases by purging the food product with an inert gas. The final product is substantially free of unwanted microorganisms, enzymes, and oxidants that cause spoilage of the food product.

Abstract: A purification and delivery system delivers a high-pressure fluid (e.g., carbon dioxide) to a process area and includes a fluid supply tank with a fluid in a liquid state. A purification section is provided in the system and includes at least one purification unit to remove at least one component from the fluid, and a high-pressure pump is disposed downstream from the fluid supply tank and proximate the process area. The high-pressure pump pressurizes the fluid to a process pressure that is greater than the pressure of the fluid within the fluid supply tank. By providing the high-pressure pump proximate the process area, the distance at which high-pressure fluid must be transported while maintaining required operating temperatures and pressures is minimized.

Abstract: This disclosure discusses the problems associated with preservation of food products while avoiding undesirable high pressures, additives, or other chemical treatments. The disclosed invention will reduce spoilage in food products, particularly liquid food products, by removing oxidants, enzymes, and killing bacteria without using heat or undesirable additives. The process of the invention uses a combination of moderate pressure and reactive gases, such as carbon dioxide or nitrous oxide to treat food products, and then removes the reactive gases by purging the food product with an inert gas. The final product is substantially free of unwanted microorganisms, enzymes, and oxidants that cause spoilage of the food product.

Abstract: The process is carried out in an enclosure (21) located in a surrounding gaseous fluid and defining an internal treatment zone (31). The enclosure (21) comprises an entrance passage (32) and an exit passage (33). This process comprises the following steps: (a) the treatment zone (31) is heated; (b) a gaseous treatment fluid is injected into the treatment zone (31); (c) the said objects (12) are transported through the said treatment zone (31); (d) a gaseous isolating fluid is injected in the vicinity of at least one of the said passages (32, 33). In step (d), the density of the said gaseous isolating fluid at the temperature found in the one or more of the said passages (32, 33) is greater than the density of the gaseous treatment fluid inside the oven. Applicable to the assembling of electronic boards by soldering.

Abstract: An acetylene generation and supply system includes an acetylene generation device configured to generate acetylene from at least one reactant feed stream including at least one carbon containing material, and an acetylene processing device oriented in-line and downstream from the acetylene generation device to receive and process generated acetylene from the acetylene generation device. The acetylene processing device consumes at least a portion of the generated acetylene upon operation of the acetylene processing device. In one embodiment, the acetylene generation device is an arc plasma reactor, and the acetylene processing device is a carburization system that processes steel parts.

Abstract: A fluid purification and recovery system includes a buffer section configured to receive a fluid delivered from a process station, where the fluid pressure is maintained within the buffer section within a predetermined range and the fluid is maintained within the buffer section in at least one of a gas state, a liquid state and a supercritical state. The system further includes a purification section disposed downstream from the buffer section to receive the fluid from the buffer section, where the purification section includes at least one purification unit that separates at least a portion of at least one component from the fluid. In one embodiment, the fluid is maintained in at least one of a liquid state and a supercritical state in both the buffer section and the purification section. In addition, the buffer section delivers the fluid to the purification with minimal or substantially no fluctuations in pressure.

Abstract: Provided is a novel system for vaporizing and purifying a gas to produce ultrapure chemical gases employed at a semiconductor processing facility. The system includes a liquified gas source, a vaporization purification bed, and a buffer tank. The liquefied gas source is in communication with the vaporization purification bed to provide a liquefied gas to the bed with an ultra-pure chemical gas generated in the purification bed. The purified gas is subsequently routed to a buffer tank and to a point of use therefrom.

Abstract: A method and delivery system for an area-specific precision control of biting insects, including flying and non-flying, biting arthropods, is described. CO2 is metered through a tubing fence and dispensed into the center of traps that serve as visual targets for flying or walking biting arthropods. The outside membrane of a trap can be treated with mineral oil to capture and kill small arthropods such as sand flies of the genus Culicoides, or black flies of the genus Simulium. In addition, the membrane can be treated with insecticide formulations of Permethrin, Resmethrin, or Deltamethrin, to kill larger biting arthropods, such as ticks, mosquitoes, deer flies, horse flies, or stable flies. This method for biting arthropod control is an ecological-friendly alternative to the widespread broadcast application of organophosphate insecticides such as Derspan, Diprom, and Malthion.

Abstract: A method and delivery system for an area-specific precision control of biting insects, including flying and non-flying, biting arthropods, is described. CO.sub.2 is metered through a tubing fence and dispensed into the center of traps that serve as visual targets for flying or walking biting arthropods. The outside membrane of a trap can be treated with mineral oil to capture and kill small arthropods such as sand flies of the genus Culicoides, or black flies of the genus Simulium. In addition, the membrane can be treated with insecticide formulations of Permethrin, Resmethrin, or Deltamethrin, to kill larger biting arthropods, such as ticks, mosquitoes, deer flies, horse flies, or stable flies. This method for biting arthropod control is an ecological-friendly alternative to the widespread broadcast application of organophosphate insecticides such as Derspan, Diprom, and Maithion.

Abstract: This process comprises eliminating the ammonia from a gaseous effluent of the treatment of scrubbing with a liquid essentially comprising water, regenerating the scrubbing liquid by stripping countercurrent with respect to the gas to be treated, then recycling at least most of the regenerated scrubbing liquid by putting it into thermal exchange relation with the scrubbing liquid to be regenerated.Application in the production of CO.sub.2 by the treatment of smoke with ammonia.