Abstract: A compression machine (compressor 4 and/or pump 5) of the plant (1) for the treatment of a fluid, typically by pressure swing adsorption, comprises at least one detector (7) for detecting clearance between a moving part (6) and a stator and delivering a measurement signal used so as to vary, depending on this measurement, the operation of the plant and especially to automatically shorten the phases during which the machine is running at an excessively high speed.

Abstract: An air dryer system for a trailer braking assembly is modified to provide a purge flow when the park brakes are actuated. An air reservoir, either the main air tank or a separate reservoir, is in operative communication with the trailer air dryer. A valve disposed at a supply end of the trailer air dryer selectively vents a purge flow to atmosphere in response to a park brake application. A restricting orifice limits the purge flow through the trailer air dryer to extend the purge time and maximize the removal of moisture from the air dryer.

Abstract: A filtering device for treating substances passing therethrough includes a filter cartridge having a cylindrical inner wall surrounded by a cylindrical outer wall. The inner and outer walls are spaced to define an annular space between them. A filtering media occupies the annular space and operates to remove contamination from a fluid flowing through the filter cartridge. First and second covers are located at opposite axial ends of the filter cartridge for sealing the system. At least one biasing assembly is disposed at one axial end of the filter cartridge for applying an approximately constant compression force to the filter medium. The compression force minimizes the formation of voids and the occurrence of bridging within the filtering media. A sensing mechanism, such as a Hall Effect sensor, can be applied to the filter cartridge for detecting changes in the filtering media which indicate the formation of voids or defects in the filtering media.

Abstract: A compression machine (compressor 4 and/or pump 5) of the plant (1) for the treatment of a fluid, typically by pressure swing adsorption, comprises at least one detector (7) for detecting clearance between a moving part (6) and a stator and delivering a measurement signal used so as to vary, depending on this measurement, the operation of the plant and especially to automatically shorten the phases during which the machine is running at an excessively high speed.

Abstract: The present invention relates to methods and apparatuses for the purification and reuse of waste air mixed with additives (for example, solvents) or impurities, in particular for the purification and reuse of waste air mixed with solvents from dryer appliances of web-fed offset printing machines, in a first method step the waste air being led through at least one condenser in order to condense out additives or impurities contained in the waste air, in a second method step the waste air, treated according to the first method stop, being led through at least one separator element for the further purification of the waste air to remove condensed additives or impurities contained in it, and, finally, the waste air, treated according to the second method step, being recirculated for the renewed absorption or suction-removal of additives and impurities.

Abstract: Systems and methods for cleaning and operating gas cleaning devices using vibration generators wherein the systems include sensors and programs for monitoring and predicting resonant conditions of different surface areas and zones in order to vary the frequency and amplitude of vibrations to establish optimum resonant conditions on such surface areas or zones and thereby optimize cleaning and operation of such gas cleaning devices.

Abstract: In a method for recovering vapors during the dispensing of a bituminous product into a tank, an inlet opening of the tank is closed with a fitting. The bituminous product is dispensed into the tank via the fitting. The bituminous product emits vapors inside the tank. The vapors are exhausted from the tank without direct contact of the vapors with moving parts. The vapors are transported to a condenser, and condensed to a liquid in the condenser. The condensed liquid is returned to the tank via the fitting.

Abstract: Process and device for so-called biofilters, in which polluted gas, e.g. air, is made to pass through, and thereby be cleaned in a bed of bed media arranged in a container, comprising measuring the moisture content of the bed and the supply of fluid, e.g. water, in order to maintain the desired moisture content, wherein the moisture content of the bed is measured by elements (9; 23, 23') which are not in contact with the bed media.

Abstract: A method and apparatus is disclosed for separating a vapor-gas mixture formed above a liquid in a tank and which mixture is exhausted from the tank through an exhaust line in order to relieve overpressure in the tank. The mixture is passed from the tank through a membrane unit having a separating membrane and underpressure is generated at least intermittently, on a permeate side of the membrane unit, by a pump. This produces on the permeate side of the membrane permeate enriched with vapor and on the retentate side of the membrane retentate deleted in vapor. The permeate is returned to the tank and the retentate is exhausted to the atmosphere via the exhaust line.

Abstract: A hybrid filter system and a method for filtering process fluid utilizing a backwash containment vessel. Tube sheet assemblies designed to hold disposable or backwashable filter elements are utilized to secure either type of filter elements in the backwash containment vessel. The tube sheet assemblies are removably mounted in the backwash containment vessel, and may be easily swapped for a given filtering application. The hybrid filter system utilizes a backwash containment vessel in conjunction with either disposable filter elements or backwashable filter elements depending upon process flow parameters.