106 results about "Particulate media" patented technology

This is a method and apparatus for treatment of liquid media making use of at least one float positioned at the top of the liquid and at least one gas diffuser placed under the float and connected to this float by at least one brace, the diffuser is connected to a gas source by at least one flexible conduit. The gas emitted from the diffuser produces a mixture with liquid having density lower than the liquid and the float partially sinks in the liquid thus increasing the submergence of the diffuser and lowering the gas flow through the diffuser. At increased submergence, the gas flow is reduced, the mixture density increases, and the float rises. A repeatable motion up and down of the float-diffuser is established producing pulsations in the liquid. The method and apparatus can be used in a multitude of chemical, pharmaceutical, petrochemical, environmental and other industries for carrying out mass transfer, chemical and biological transformations, phase separations, thickening of suspensions, mixing, suspending of particles, washing, coagulation-flocculation, membrane filtration, filtration across particulate media, filtration across floating media, mass transfer across membrane, and other processes.

A water treatment unit for positioning in a sport bottle or container for treating water includes a prefilter section, a pretreatment section, a treatment section and a post treatment section. A first chamber in the pretreatment section contains a first treatment medium which comprises at least one loose particulate medium through which the water to be treated flows in a vertical upward direction during treatment to lift the medium. A second chamber in the treatment section contains a second treatment medium through which the treated water flows in a radial horizontal direction during treatment. And a third chamber in the post treatment section contains a third treatment medium through which the water to be treated flows during treatment.

The invention relates to a system for packing chromatography columns with a chromatography medium and packing method for use in such columns. In particular, the invention relates to a method and system for packing chromatography columns which utilises an external drive means to compress a bed of particulate medium to a target bed height.

The present invention features a device for treating liquid including a containment member comprised of rigid porous polymer configured to form a containment space. Nonbonded particulate media is disposed in the space in contact with and contained by the containment member. Pores in the containment member are characterized by pore paths and pore sizes effective to permit flow of liquid through the pores while preventing the media from traveling through the pores. The containment member may be in various shapes and include different numbers of components. One variation of the containment member includes first and second containment layers comprised of the rigid porous polymer, which are configured and arranged so as to form a space therebetween in which the media is contained. Another variation of the containment member includes first and second porous polymer tubes forming a space in which the media is contained. Also featured is a method of using the device. Another aspect of the invention is a system that includes the device and a pH adjuster device that may function as an acidifier or basifier, which improves the performance of the liquid treatment device in removing substances from liquids by raising or lowering the pH of the influent traveling through the media of the liquid treatment device.

The present invention includes multifunctional compositions, methods and binding systems to provide disinfecting and deodorizing coatings for hard and soft surfaces, inorganic and organic solid surfaces and particulate media and other related substrates, including human and animal skin and skin lesions; to provide neutralizing functions for malodors generated by both human, animal and industrial fluids and solid wastes; and to provide neutralizing and degrading functions for nuisance and noxious chemicals. The present invention provides compositions and methods for producing disinfecting, oxidizing and enzyme-inhibiting fluids enabling preparation of durable, stable biocidal and deodorizing coatings and media which can be widely used for biological agent control, prevention and elimination of odors, and degradation of noxious agents susceptible to chemical oxidation, and which take forms that are inoffensive to users and offer high convenience.

The invention provides a method for the drying of a wet substrate, the method comprising treating the substrate with a solid particulate material at ambient or elevated temperature, the treatment being carried out in an apparatus comprising a drum comprising perforated side walls, wherein the drum comprising perforated side walls is rotated so as to facilitate increased mechanical action between the substrate and the particulate material. Preferably, the drum comprising perforated side walls has a capacity of between 5 and 50 litres for each kg of fabric in the load and is rotated at a speed which generates G forces in the range of from 0.05 to 0.99 G, and the method is carried out at a temperature of between 5° and 120° C. Preferably, the solid particulate material comprises a multiplicity of particles at a particle to fabric addition level of 0.1:1-10:1 by mass, wherein the particles comprise polymeric particles, non-polymeric particles, or mixtures of polymeric and non-polymeric particles. All particles may be solid or hollow in their structure, have smooth or irregular surface features, and are of such a shape and size as to allow for good flowability and intimate contact with the wet substrate. The invention provides optimum drying performance as a result of improved mechanical interaction between substrate and particulate media and is preferably used for the drying of textile fabrics. The method allows for significant reduction in the consumption of energy when compared with the conventional tumble drying of textile fabrics, and also facilitates reduced textile fabric damage.

A chromatography column (100) is disclosed comprising a housing (10) comprising a tubular side wall (1); opposed, axially spaced end units (2,3) which together with the side wall define an enclosed bed space to contain a bed of particulate medium, at least one of the end units being slidable in axial direction; an axial drive element (5) connected to the slidable end unit, said drive element extending internally in the column bed space; a drive (4) positioned on or beyond the opposite end unit and connected to the drive element.

A particulate media/fluid delivery system comprises a tank for containing a supply of particulate media, preferably an abrasive powder. A modulator is disposed upstream of the tank for modulating the pressure of air flowing therethrough. A mixing chamber is adjacent to the tank, and an orifice is provided for delivering particulate media from the tank into the mixing chamber. A fluid inlet delivers fluid from the modulator to the tank, and a bypass tube is disposed adjacent to the fluid inlet for receiving fluid from the fluid inlet and delivering the fluid into the tank. A discharge port is provided for delivering a fluid/particulate media mixture to a tool. Control of the fluid/particulate is via differential modulation pressure. This differential modulation pressure is a function of two mechanisms, namely, the modulator in the system, including bypass (or blend) air around it that is metered, and the aforementioned bypass tube. Fine adjustment of the particulate media/fluid ratio is by a panel flow control valve, which may be either manually or automatically controlled, and coarse adjustment is via change-out of the bypass tube with another bypass tube having a different internal diameter.

A nozzle assembly for a tool which utilizes a particulate/fluid mixture comprises a unique floating ferrule within a handpiece assembly, and eliminates the need, in the prior art, for a nose piece to attach a nozzle to the handpiece assembly. Rather, the nozzle and its integral holder are designed so that a hose may be slipped over its extended rear tube and then, when the handpiece with its floating ferrule is twisted on, the hose is captured and sealed. This is managed because the ferrule is unengaged when the handpiece tube is first started to be threaded onto the nozzle holder. After a few turns, the ferrule pushes against the hose and seals it against the rear extension of the nozzle holder. When the handpiece is unscrewed from the nozzle, because the nozzle must be replaced, the ferrule remains attached to the nozzle and hose, allowing for easy turning. Once the handpiece is unscrewed from the nozzle, the nozzle may be tipped slightly to disengage it from the hose very easily.

The present invention discloses a magnetic recording particulate mediumhaving amagnetic layer on anonmagnetic support, the magnetic layer containing a ferromagnetic metal powder and a binder and having a coercive force of 1,400 to 1,700 Oe, wherein the ferromagnetic metal powder is spindle-shaped particles consisting essentially of Fe and having a Co/Fe ratio of from 1 to 5 atomic %, an Al/Fe ratio of from 5 to 15 atomic %, an average major axis length of 0.1 to 0.2 mu m and a specific surface area of 40 to 50 m2/g, and the binder contains a polyurethane consisting essentially of a diol component comprising a polyether polyol and a polyester polyol and a polyisocyanate component. This magnetic recording particulate medium is characterized by minimal head wear, freedom from head clogging, and satisfactory electromagnetic characteristics.

Methods and apparatus are provided for a blast attenuator having a container with an outer wall that defines a cavity in which a particulate media is disposed, and a stirring element disposed in and moveable relative to the container. At least a portion of the stirring element extends into the particulate media, wherein, in use, the particulate media provides resistance against movement of the stirring element relative to particulate media so as to attenuate the energy of a blast.

The invention belongs to the technical field of gas-solid two-phase flow detection. It is a method for measuring particle charge distribution in two-phase flow in pneumatic conveying. Combining the projection data from the electrostatic signal of the sensor, the prior information from the distribution of particle medium and velocity with the dynamic space charge sensitivity of the sensor, the particle charge distribution is retrieved by the image reconstruction algorithm. The invention also discloses a corresponding measuring apparatus. According to the particle charge distribution measurementmethod provided by the method, the problems existing in the current particle charge distribution measurement are effectively solved, and the effective measurement of the particle charge distributioncan be realized. The method and apparatus for measuring charge distribution of pneumatic conveying two-phase flow particles has the advantages that the charge distribution of the two-phase flow particle of the pneumatic conveying can be effectively measured in real time. The method and apparatus for measuring charge distribution of pneumatic conveying two-phase flow particles provides a basic measurement method and a method for exploring the basic flow characteristics of the gas-solid two-phase flow, monitoring the industrial production process and preventing the electrostatic hazards.

The invention features methods and systems for recovering carbon dioxide, for producing commercial quality carbon dioxide (CO₂) of 90% to +99% purity using, wet calcium carbonate lime mud produced in a recausticizing process that also produces caustic soda, for instance, Kraft paper pulp mill lime mud (a.k.a., “lime mud”) as a feedstock to a multi-stage lime mud calcination process. This process may be fueled with low, or negative cost “carbon-neutral” fuels such as waste water treatment plant (WWTP) sludge, biomass, precipitated lignins, coal, or other low cost solid fuels. High reactivity, high-quality calcined lime mud (a.k.a. re-burned lime, or calcine), required in the Kraft paper pulp mill's recausticizing process is also produced, and superheated high pressure steam and hot boiler feed-water is generated and exported to the mill's steam distribution and generation system as well as hot process water for use in the mill's manufacturing operation. The system for calcining calcium carbonate lime mud produced from a recausticizing manufacturing operation and converting it to calcined lime mud and CO₂ comprises a calciner and a combustor linked by a moving media heat transfer (MMHT) system or apparatus. The MMHT system or apparatus thermally links separate fluid bed combustion (exothermic) and calcination (endothermic) stages with a solid particulate media. The system further comprises a flash dryer or spray dryer that utilizes exhausted enthalpy from the calcination stage.

A flow sensor for use downstream from a particulate media dispensing device is provided having an inlet to receive particulate media and an outlet to dispense the media. The flow sensor has an inlet portion with a funnel to direct particulate media towards a central axis. An axially mounted flow director is located downstream from the funnel to direct the media outwards towards a sensor portion. A capacitive sensor located in the sensor portion surrounds the flow director to create an annular flow path to measure the amount of media that passes through sensor rings in the sensor.

A process for the preparation of a granulated or pelletized sorption medium from a partially decomposed organic material like peat, followed by low-temperature thermal activation of the sorption medium to produce a high degree of granule or pellet hardness balanced against an efficacious level of ion-exchange and adsorption capacity, followed by chemical treatment of the sorption material via a preselected solution of soluble salts (called “APTsorb II*M”) for use in a wastewater treatment process where competing toxic metal cations are present in the wastewater is provided by this invention. Depending upon the M⁺ cations contributed to the peat granule sorption activity sites by the preselected salt used in the salt solution treatment step, the granules exhibit a selectivity α of a first type of more-toxic metal cations (such as cadmium, lead, copper, or other metals at high concentrations) over a second type of less-toxic metal cations of (such as zinc, aluminum, or iron) in the wastewater; greater adsorption activity for the first type of more-toxic metal cations; and greater breakthrough capacity for the first type of more-toxic metal cations. This allows the end user to target the more-toxic metals for adsorption by the sorption medium containing the cations contributed by the preselected solution of soluble salts.

The present invention relates to a method for preparing a granulate of at least two active principles, including a step of applying said active principles to a solid particulate medium by dusting, said active principles not being plant extracts.

The invention relates to a wear-resisting small eccentric V-ball regulating valve special for salt chemical engineering. The wear-resisting small eccentric V-ball regulating valve comprises a valve body, a packing box is machined on the valve body, a packing seal assembly, a packing gland and a packing pressing plate are sequentially arranged in the packing box and connected with the valve body in a fastening mode; a small eccentric valve ball is concentric with a transmission shaft and a driven shaft, the small eccentric valve ball is connected with the transmission shaft and the driven shaft and arranged in the valve body, an upper bush and the transmission shaft are arranged in the valve body from the top, a lower bush and the driven shaft are arranged in the valve body from the bottom, and a valve seat and a pressing ring are arranged in the valve body from the side face; a first distance adjustment pad and a second distance adjustment pad are arranged on the upper end face and the lower end face of the small eccentric valve ball; a first C-shaped seal ring is arranged in a clamping groove between the valve body and the first distance adjustment pad; a first supporting ring is arranged between the upper bush and the lower bush, and a second supporting ring is arranged between the first C-shaped seal ring and a second C-shaped seal ring. According to the wear-resisting small eccentric V-ball regulating valve, blocking of a flow channel of the valve body can be effectively prevented, corrosion of a cavity by crystals can be effectively prevented; the adjustment accuracy of the valve can be improved; scouring and corrosion of media on the valve body and components in the valve can be reduced; particle media can be prevented from entering valve shaft gaps, the adjustment accuracy of the valve can be greatly improved, and the service life of the valve can be greatly prolonged.