Abstract: A subsea compression system and method wherein a wellstream fluid is flowed through a flow line (12) from a reservoir (10) and into a separation vessel (16) for subsequent compression in a compressor (18; 18?, 18?) prior to export of gas. A recycle line (24; 24?, 24?) is fluidly connected at a first end to the compressed wellstream at the outlet side of the compressor (18; 18?, 18?) and at a second end to the wellstream at a location between the separation vessel (16) and the inlet side of the compressor (18; 18?, 18?), the recycle line being capable of controllably (32) feeding fluid due to surge back to the compressor inlet side and avoiding the need to feed the fluid into the separation vessel, because the re-circulated gas is dry both due to having been separated at seawater temperature, and then being heated during recirculation.

Abstract: A method for removing Hg (mercury) from waste gases is disclosed, the removing of the mercury (Hg) gas (vapors) is by contacting the waste gas with a scrubbing agent being organic sulfoxides either in pure form or as with an emulsion of water-in-organic sulfoxides. The waste gas can be any waste gas containing mercury gases or mercury vapors, such as combustion flue gas and waste gases generated in various chemical and industrial processes.

Abstract: A first contaminant selected from oxygen and carbon monoxide is removed from impure liquid carbon dioxide using a mass transfer separation column system which is reboiled by indirect heat exchange against crude carbon dioxide fluid, the impure liquid carbon dioxide having a greater concentration of carbon dioxide than the crude carbon dioxide fluid. The invention has particular application in the recovery of carbon dioxide from flue gas generated in an oxyfuel combustion process or waste gas from a hydrogen PSA process. Advantages include reducing the level of the first contaminant to not more than 1000 ppm.

Abstract: Improved method for separating gases from a gas mixture, whereby the gas mixture to be treated is led through a membrane separator (3) by means of a compressor installation (2) and whereby the compressed gas mixture to be treated is cooled in the compressor installation (2), among others in order to separate condensate from the gas mixture, after which, as it leaves the compressor installation (2), it will be re-heated before it ends up in the membrane separator (3), characterized in that, in order to re-heat the gas mixture to be treated as it leaves the compressor installation (2), use is made of the recuperation heat of the compressor installation (2) itself.

Abstract: Fan blades within a fan assembly are rotated in a first rotational direction, thereby generating airflow from above the fan blades downward past the fan blades. Airborne particles adhere to the surface of the fan blades as the air flows past. The fan direction is then reversed maintained at a relatively low rotational rate. A fluid is dispensed onto the hub of the fan blades. Due to the centripetal force of the spinning fan blades, the fluid is spread thin across the top surface of the fan blades and the liquid film washes the blade of the fan, removing particulates from the fan blade. The solution is pushed outward against the inner wall of the fan housing forming a fluid meniscus. The fan speed is increased to push the fluid meniscus into an annular reservoir. The collected fluid is then vacuumed and consolidated into the collection vessel.

Abstract: An aqueous multicomponent coating material comprising (I) an aqueous component preparable by mixing at least the following starting products: (A) at least one secondary aqueous dispersion of at least one (meth)acrylate copolymer containing on average per molecule at least one isocyanate-reactive functional group, (B) at least one primary aqueous dispersion of at least one (meth)acrylate copolymer containing no isocyanate-reactive functional group, and (C) at least one pigment and/or one filler; and also (II) a component comprising at least one polyisocyanate as crosslinking agent, and also a process for preparing it, and its use.

Abstract: One exemplary embodiment can be a process for increasing an efficiency of an acid gas removal zone. The process can include sending a sour gas stream including at least one gas to a first absorber providing an overhead stream absorbing the at least one gas; withdrawing a side-stream from the first absorber and passing the side-stream through a holding tank, a side-stream fluid transfer device, and a side-stream chiller before returning the side-stream to the absorber; and passing the first absorber overhead stream to a pump-around circuit for a second absorber. Usually, the pump-around circuit may include a flash drum, a pump-around fluid transfer device and a pump-around chiller before providing a slipstream to the first absorber and another portion to the second absorber.

Abstract: A variable speed fan device includes a housing, a motor, a fan blade, a controller, and a first plurality of discrete light sources. The motor is maintained by the housing and the fan blade is connected to the motor. The controller is electronically coupled to the motor and manages an operational status of the variable speed fan device. The light sources are adapted to emit light from the display panel along a discontinuous perimeter at the exterior face. In an activated state, the light emitted by each light source is visually perceptible an exterior face of the display panel. The controller is programmed to individually activate and deactivate the light sources in a predetermined pattern creating a perception of movement of light about the discontinuous perimeter at the exterior face of the display panel corresponding with an operational status of the variable speed fan device.

Abstract: Produced natural gas containing carbon dioxide is dehydrated and chilled to liquefy the carbon dioxide and then fractionated to produce a waste stream of liquid carbon dioxide and hydrogen sulfide. Natural gas liquids may be first separated and removed before fractionation. After fractionation, the waste stream is pressurized and transmitted to a remote injection well for injection either for disposal of the waste stream and preferably to urge hydrocarbons toward the producing well. A hydrocarbon stream proceeds from fractionation to a methanol absorber system which removes carbon dioxide gas. The hydrocarbon stream is thereafter separated into at least hydrocarbon gas, nitrogen and helium. Some of the nitrogen is reintroduced into a fractionation tower to enhance the recovery of hydrocarbons. A methanol recovery system is provided to recover and reuse the methanol. The hydrocarbons are sold as natural gas and the helium is recovered and sold. Excess nitrogen is vented.

Abstract: A treatment system to efficiently remove lead from dust contained in extracted cement kiln combustion gas while reducing facility and running costs. A treatment system 1 comprising: a probe 3 for extracting a part of combustion gas, while cooling it, from a kiln exhaust gas passage, which runs from an inlet end of a cement kiln to a bottom cyclone; a classifier 5 for separating coarse powder from dust contained in the combustion gas extracted by the probe 3; a wet dust collector 6 for collecting dust from the extracted gas containing fine powder discharged from the classifier 5; and devices 12, 13 for feeding sulfurizing agent for sulfurizing lead contained in the kiln exhaust gas to the wet dust collector 6, and others. From the sulfurizing-agent feeders 12, 13 are preferably added the sulfurizing agents to a circulation liquid tank 7 or a pump 9 for circulating slurry.

Abstract: A method and system for purifying air while moving. The system for purifying air includes an air purification unit inhaling and purifying the air, a moving unit moving the system, and an object sensing unit sensing a wall existing at a side of the system in a direction in which the moving unit moves, wherein the moving unit moves while keeping a distance within a predetermined range from the wall sensed by the object sensing unit.

Abstract: (Meth)acrolein or (meth)acrylic acid is collected by bringing a reaction gas (1) containing (meth)acrolein or (meth)acrylic acid obtained through a vapor-phase catalytic oxidation reaction into contact with an aqueous solution as a collecting solvent in a collecting tower main body (2). The reaction gas (1) is supplied to the collecting tower main body (2) from two nozzles (2c) facing each other, and is caused to collide in the collecting tower main body (2). According to the present invention, (meth)acrolein or (meth)acrylic acid can be efficiently collected from a gas containing (meth)acrolein or (meth)acrylic acid while preventing polymerization.

Abstract: A system for curing a binders applied to glass fibers is disclosed. The curing of the binder is accomplished by passing the binder coated glass fibers through a curing oven having one or more temperature zones. The temperature of the binder coated glass fibers is monitored and the temperature in the curing oven is adjusted to ensure proper heating of the glass fibers thereby ensuring uniform curing of the binder composition. Temperature measurements are made either as the product traverses the oven or as the cured product exits the curing oven. The invention is particularly useful for curing acrylic thermoset binders and formaldehyde-free binders.

Abstract: A process for removal of SO2 in off-gases having a temperature of 30-150° C. and containing 0.001-1 vol % SO2 in which the SO2 is oxidised to H2 SO4 by spraying an aqueous solution of H2O2 into the off-gas upstream of an aerosol filter removing the produced sulphuric acid from the off-gas.

Abstract: A method of removing contaminants from a contaminated gas or vapor stream, which method includes passing a contaminated gas or vapor stream through a bed of curled separating media linearly in an upward direction at a linear velocity of up to 6 m/s; allowing a contaminant in the contaminated gas or vapor stream to collect on the separating media as the gas or vapor stream passes through the bed of separating media, thereby removing the contaminant from the gas or vapor stream and thus purifying the gas or vapor stream; allowing the contaminant that has collected on the separating media to pass from the separating media into a collection zone; removing the contaminant from the collection zone; and withdrawing a purified gas or vapor stream from the bed of separating media.

Abstract: A fiber bed mist eliminator has a fiber bed which is formed of a composite fiber bed collecting media strip including a collection layer which is not subjected to needle punching. The fiber bed can be made very thin while retaining high efficiency in removing small particles of aerosol from a gas stream passing through the fiber bed. The fiber bed collecting media strip lends itself to be applied to the mist eliminator by spirally wrapping the element onto the mist eliminator. The fiber bed collecting media strip can overlap itself to seal at the locations where the fiber element overlaps itself. The fiber bed collecting media strip can be provided to the field in different formats for use in making a mist eliminator fiber bed.

Abstract: The present invention relates to a process for removing carbon dioxide and optionally hydrogen sulphide and/or COS from a gas stream containing these compounds by washing the gas with an aqueous washing solution containing water, sulfolane and a secondary or tertiary amine derived from ethanolamine. More particularly the invention relates to the process described above, the process being carried out in the presence of a primary or secondary amine compound in an amount between 0.5 and 15 wt. % based on water, sulfolane and amine. The invention further relates to an absorbent liquid to be used in the above process.

Abstract: An air filtration system includes a support structure, an enclosure coupled to the support structure and including an air outlet, a filter and a fan operatively coupled to the enclosure, and a diffusion screen configured to cover the air outlet. The diffusion screen includes a screen frame configured to be removably attachable to the enclosure with at least one releasable fastener, and at least a diffusion layer substantially spanning the screen frame to cover the air outlet to provide unidirectional or laminar air flow from the air outlet.

Abstract: A resin composition, substrate material, sheet, laminated board, resin-bearing copper foil, copper-clad laminate, TAB tape, printed circuit board, prepreg and adhesive sheet are provided which exhibit improved physical properties, dimensional stability, heat resistance and flame retardance, particularly high-temperature physical properties. A resin composition containing 100 parts by weight of a thermoplastic resin and 0.1-65 parts by weight of an inorganic compound, the resin composition having a mean linear expansion coefficient (?2) of 1.0×10?3 [° C.?1] or below over the temperature range from a temperature 10° C. higher than a glass transition temperature of the resin composition to a temperature 50° C. higher than the glass transition temperature of the resin composition.

Abstract: A robot cleaner that has a dust collection unit with a cyclone part generating an ascending rotary air current from the dust-laden air being drawn in through a lower part thereof, separating the dust from the air using a centrifugal force, and discharging the dust-separated air to the lower part through a center part, and a collection part surrounding the cyclone part to receive the dust being centrifugally separated.