Abstract: Disclosed is a method for deacidifying a fluid stream containing acidic gases as contaminants, according to which the fluid stream is brought into intimate contact with a washing liquid in at least one absorption step. Said washing liquid represents an aqueous solution containing a) tertiary aliphatic alkanolamines (alkanolamine A), at least 30 percent by weight of said tertiary aliphatic alkanolamines being 3-dimethylamino-1-propanol, and b) secondary aliphatic amines (activator B), at least 20 percent by weight of said secondary aliphatic amines being piperazin. The fluid stream which has been essentially purified of the acidic gases is then separated from the washing liquid that is loaded with acidic gases.

Abstract: The present invention provides an aqueous emulsion resin composition which comprises: (a) a resin composition containing at least one fluoroolefin polymer having crosslinkable group(s) at a terminus and/or a side chain of its molecule and at least one non-fluoroolefin polymer having crosslinkable group(s) at a terminus and/or a side chain of its molecule; and (b) at least one curing agent selected from the group consisting of isocyanates, melamines, hydrazides, carbodiimides, silanes and epoxides; and provides an aqueous emulsion resin compositions containing at least one chemically bonded product of a fluoroolefin polymer and a non-fluoroolefin polymer bonded to each other via at least one covalent bond at a terminus and/or a side chain of the molecules wherein one or both of the fluoroolefin polymer and the non-fluoroolefin polymer have crosslinkable group(s).

Abstract: The invention relates to an improvement in apparatus and process for the formation of a complex of Lewis acidic or Lewis basic gases in a reactive liquid of opposite character and for the breaking (fragmentation) of said complex associated with the recovery of the Lewis gas therefrom. The improvement resides in forming finely divided droplets of reactive liquid and controlling the temperature, pressure and concentration of said Lewis gas of opposite character to provide for (a) the formation of said complex between said gas and reactive liquid or (b) the breaking of said complex and the recovery of the atomized droplets of reactive liquid.

Abstract: Installation for gas treatment by a liquid phase comprising a) a column (C) that comprises means (1) for introducing gas at one end of said column, means (9) for drawing off gas from the other end of column (C) and, from upstream to downstream in the direction of circulation of the liquid phase: a first internal (2) that comprises means for distribution of a liquid phase, a first bed (6) that comprises a packing or catalytic particles, a second internal (3) that comprises means for separating liquid/gas mixture (19, 20) that is obtained from first bed (6), first means (32, 4) for collecting and evacuating the separated liquid phase, means (100) for passing through internal (3) of the treated gas, and distribution means (31, 101) of a liquid phase with said gas, a second bed (8), second means (10) for collecting and evacuating the liquid phase at the lower outlet of column (C), b) Means for recycling the collected liquid phase.

Abstract: A scrubber removes dust from an exhaust gas. The scrubber includes a casing having an exhaust gas inlet and an exhaust gas outlet, an impeller housed in the casing and supported by a shaft, and a cleaning liquid supply tube for ejecting a cleaning liquid by which the dust contained in the exhaust gas is captured. The scrubber further includes a plurality of protrusions provided around the impeller such that the exhaust gas and the cleaning liquid which are discharged from the impeller impinge upon the protrusions.

Abstract: An indoor air purification apparatus and method includes a watertight chamber including a top portion having a water inlet, a first air portal, a second air portal, a bottom portion, and a plurality of shelves mounted between the top portion and the bottom portion. Water continuously flows from the water inlet at the top of the chamber, typically falling over the shelves to a reservoir. Typically, a water pump returns the water to the water inlet at the top portion of the chamber through at least one conduit leading from the reservoir. An air pump typically drives the room air through the chamber from one air portal to the other and back into the room. The room air is purified as it mixes with the water cascading over the shelves.

Abstract: An adaptable dual direction, differential pressure assembly is disclosed. Solenoid valves release controlled bursts of air into a top of a container. A rate of the controlled bursts of air is partially responsive to a pressure differential between atmospheric pressure and that of compressed air in the reservoir. A pleated filter is fitted inside of the container. The pleated filter has an inner wall and an outer wall and has pleatings separated using hot melt glue beads there between. The controlled bursts of air are programmed to be substantially automatically responsive to one or more pressure differentials between an inner wall and an outer wall. In one embodiment, air is drawn from the blower through the pleated filter from the inner wall to the outer wall until a desired pressure differential is achieved.

Abstract: A device is provided for extracting water from atmospheric air (8) having a free-flowing adsorbent or absorbent (3, 13), in particular a saline solution (3), having a hygroscopic salt for the adsorption or absorption of water, the adsorption or absorption being provided at least along an adsorption or absorption section (7), which realizes a high yield of (potable) water per unit volume of the structure or of the absorbent/adsorbent (3), a decrease in the assembly effort and a stabilization of the process. This is achieved according to the invention in having a free-flowing adsorbent (3, 13) or absorbent (3, 13) disposed at least along the adsorption or absorption section (7) essentially on a guide element (1, 16, 19, 22, 24) for guiding the adsorbent (3) or absorbent (3), in particular on a presettable track.

Abstract: Systems and methods using the properties of supercritical water to allow raw air including a contaminant to be combined with water and to be purified in a supercritical water oxidation (SCWO) process. A supercritical water oxidation (SCWO) air purifier will generally take in a mixture of water and raw air which includes oxygen via a pumping and mixing apparatus, put the mixture into a supercritical water reactor (SCWR), and run the resultant effluent stream through a system for separating the water from the resultant clean air and the other relatively harmless outputs of the supercritical water reactor (SCWO).

Abstract: A device for sampling of a mixture of ultrafine particles within a moving gas stream includes a suction generator, at least one sample collection element, and a conduit structure coupling the sample collection element with the suction generator. In some embodiments, the suction generator is configurable to separate by suction a portion of a gas stream containing a plurality of ultrafine particles, and to entrain with a motive fluid forming an output mixture. In some embodiments, a conduit is configured to accept a gas stream containing ultrafine particles and to channel it to the collection element.

Abstract: Device for recovering a material to be measured comprising a reservoir filled with a sample holding material impregnated with a sample liquid in which a material to be measured is dissolved and an adsorbing column for adsorbing the material to be measured, wherein the reservoir and the adsorbing column are communicated by a straight pipe, and further communicated with a recovery vessel via a recovery pipe branched out the straight pipe. Accordingly, operations of opening/closing or switching a first valve provided on the in-flow side of the reservoir, a second valve provided on the out-flow side of the adsorbing column, and a third valve provided to a vent hole to the atmosphere in the recovery vessel, make it possible to recover the material to be measured without depositing the material on the valves.

Abstract: Disclosed herein is a cyclone for separating fine particles from a gas. The cyclone includes a cyclone body having an upper end with an inlet and a lower end with a particulate outlet, gas outlet tube with an upper end that extends upwardly into the lower end of the cyclone body, and a vortex breaker. The upper end of the gas outlet tube is connected to the lower end of the cyclone body by a slip joint. The configuration of the cyclone provides for efficient removal of fine particles as compared to conventional techniques. A vessel containing cyclones, and methods of separation using the cyclones and vessel, also are disclosed.

Abstract: A filter for absorbing odoriferous matter from ambient air has a single body with a line of weakness that extends across at least a portion of the body and divides the filter element into at least two separately usable sub-filters. The line of weakness permits the separation of the single filter element into the sub-filters without the use of a tool. The filter element can be used in combination with varying size air purification units. The filter element can be placed in the filter housing of a large air purifier or after separation the sub-filters can be used in multiple correspondingly sized smaller air purifiers.

Abstract: Ionically curable fluoroelastomers based on vinylidenfluoride (VDF) comprising: a) 100 parts by weight of fluoroelastomer based on vinylidenfluoride (VDF) substantially polar end groups free; b) from 0.1 to 0.35 phr of accelerating agent; c) from 1 to 15 phr of curing agent; d) from 2 to 20 phr of one or more inorganic acid acceptors, preferably bivalent metal oxides; e) from 0 to 3 phr, preferably from 0 to 1.5 phr of one or more basic compounds preferably hydroxides of bivalent metals or of weak acid metal salts; f) from 0 to 80 phr of reinforcing fillers; g) from 0 to 3 phr of coadjuvants of processability.

Abstract: A method of using a triple-effect absorption system to recover methane from landfill gas contaminated with CO2 and trace contaminates such as chlorinated hydrocarbons and aromatics involves processing the landfill gas with three absorbers and a flash system. One absorber uses a solvent to absorb the trace contaminants from the landfill gas, the second absorber in conjunction with the flash system extracts CO2 from the gas, and just a first portion of that CO2 is used for stripping the trace contaminates from the solvent in the third absorber. The rest of the extracted CO2 is vented to atmosphere to prevent dampening the combustion of the trace contaminants absorbed by the first portion of CO2.

Abstract: A swamp cooler filter for filtering debris from fluid drawn from a fluid reservoir for a swamp cooler is provided. The swamp cooler filter includes a water intake hose being operationally coupled to a swamp cooler whereby the water intake hose is in fluid communication between a fluid reservoir and a pump of the swamp cooler. A filter member is selectively positioned in the water intake hose. The filter member is for filtering debris from the fluid being drawn from the fluid reservoir by the pump to inhibit the debris being pumped through the swamp cooler by the pump.

Abstract: The invention relates to a method for removing ammonia and dust from a waste gas that occurs during the production of fertilizers, preferably urea, in which method the waste gas is introduced into a first washer, and a cooling gas is introduced into the one washer and an aqueous solution is introduced into the other washer, whereby both the waste gas and the cooling gas pass through at least one mist collector before exiting from the washer, in each instance, is supposed to be developed further in such a manner that the waste gas pollution can be clearly reduced. This is accomplished in that the additional water is first introduced into a fine-washing area of the first washer, delimited by the mist collector on the top and by a liquid-impermeable partition bottom at the bottom, and sprayed onto the at least one mist collector, and the aqueous solution that forms in the fine-washing area is subsequently passed into the second washer.

Abstract: A coalescer has variable characteristics including variable diameter of individual fibers along their length such that an individual fiber has differing diameters at different points along its length, and including variable porosity.

Abstract: An absorber (110) in a gas treatment plant (100) produces a rich solvent (116) that is flashed to produce flashed rich solvent (134D) and recycle gas (132D), wherein the recycle gas (132D) is not mixed with the absorber feed gas (112) as commonly practiced, but mixed with the rich solvent (116). Such configurations exhibit superior rich solvent loading, thereby reducing solvent circulation. Further contemplated gas treatment plants (100)may also include a regenerator (150) in which carbon dioxide from atmospheric flashed vapor (142) of the rich solvent (144) is employed as a stripping gas in a regenerator (150) to strip hydrogen sulfide from the rich solvent (144), and wherein sweet gas (114) is employed to strip the carbon dioxide from the rich solvent (144).

Abstract: Method of purifying a feed stream containing carbon dioxide wherein the feed stream after having been compressed and dried is partly cooled and then used to reboil a stripping column. Thereafter, the feed stream is further cooled and expanded to a lower operational temperature of the stripping column. A carbon dioxide product stream composed of the liquid column bottoms of the stripping column is expanded at one or more pressures to generate refrigeration, then fully vaporized within the main heat exchanger and compressed by a compressor to produce a compressed carbon dioxide product. Refrigeration is recovered in the main heat exchanger from a column overhead stream extracted from the stripping column within the main heat exchanger either directly or indirectly by auxiliary processing in which carbon dioxide is further separated and optionally recycled back to the main compressor used in compressing the feed stream.