Abstract:
The present invention relates to a distribution device intended for a gaseous effluent produced by a chemical reaction, comprising at least two inlet ways and two outlet ways. This device comprises at least one closed-loop line divided into four sections by four controlled sealing elements, and each one of said four ways communicates with a single section so that the inlet ways are connected to two opposite sections and said outlet ways are connected to the other two sections.
Abstract:
A novel method for bending tubes suitable for use in high-purity fluid handling sygtems includes selecting a tube made from a material having a grain-size number of at least 5, and forming a bend in the tube with a bend radius of greater than 1.5 times the diameter of the tube. Tubes bent according to the present invention are incorporated into high-purity systems as supply lines, product lines, and vacuum forelines, without the need for post-bend heat treatment or polishing.
Abstract:
A fuel processing assembly adapted to produce hydrogen gas from a carbon-containing feedstock. The fuel processing assembly includes a fuel processor, such as a steam reformer. The fuel processing assembly further includes a feed assembly adapted to deliver a carbon-containing feedstock, such as a hydrocarbon, to the fuel processor. In some embodiments, the fuel processing system includes a fuel cell stack that includes at least one fuel cell adapted to produce electrical power from hydrogen gas produced by the fuel processor.
Abstract:
A system for providing gas to a container includes a source of gas under pressure, a container, and a pressure regulating device. The pressure-regulating device includes an inlet intended to be connected to a source of the gas under pressure, an outlet, connected by a duct to the inlet and intended to be placed in communication with the container, a first valve for limiting the pressure at the outlet to a predetermined maximum value Ps, which valve is a delivery valve placed in a first passage which connects the duct to an orifice for discharging inert gas. The device also includes a second valve for keeping the pressure at the outlet above a predetermined minimum value Pi, which valve is an intake valve placed in a second passage which connects the duct to an orifice that lets fluid into this duct.
Abstract:
A method and apparatus for desorbing processing liquid from a processing liquid delivery line is provided. Non-thermal energy, such as ultrasonic energy or electromagnetic energy, is applied to a processing liquid delivery line. The non-thermal energy may be applied directly to the processing liquid delivery line, or may be applied indirectly via a conducting medium which distributes the energy along the length of the processing liquid delivery line. When non-thermal energy in the form of electromagnetic energy is employed, the frequency of the electromagnetic energy is adjusted to match the vibrational frequency of the absorbed molecules of processing liquid.
Abstract:
This pressure-regulating device (12) for supplying a gas to a container (4) comprises an inlet (14) intended to be connected to a source (7) of the said gas under pressure, an outlet (16), connected by a duct (31) to the said inlet (14) and intended to be placed in communication with the container (4), a first valve (36) for limiting the pressure at the said outlet (16) to a predetermined maximum value Ps, which valve (36) is a delivery valve placed in a first passage (34) which connects the said duct (31) to an orifice (27) for discharging inert gas. The device (12) also comprises a second valve (39) for keeping the pressure at the said outlet (16) above a predetermined minimum value Pi, which valve (39) is an intake valve placed in a second passage (35) which connects the said duct (31) to an orifice (27) that lets fluid into this duct. Application in the supply of working liquids in the electronics industry.
Abstract:
An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry. In a preferred embodiment, the slurry is heated in a flash line heater and passed to a high pressure flash where a majority of the diluent is separated and thereafter condensed by simple heat exchange, without compression, and thereafter recycled. Also an olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation.
Abstract:
An equalization chamber has a first plurality of gas inlet openings for a gas stream and a second plurality of gas outlet openings for partial gas streams, each outlet being connected by way of a gas line to a gas consumer, the maximum flow resistance for each partial gas stream being located in the area under the gas outlet openings, seen in the flow direction of the partial gas streams. To guarantee the highest possible degree of uniformity and reproducibility of the gas supply to the consumers, the maximum flow resistance for each partial gas stream is provided in the gas line between the gas outlet opening and the gas consumer.
Abstract:
The present invention relates to dispensing chemicals from a multiplexed group of chemicals and delivering the chemicals to a multiplexed set of industrial washers. An input multiplexer operatively couples a selected system input tube to a chemical pump, thereby permitting a selected liquid chemical to be pumped from a chemical container through the chemical delivery system to a selected washer.
Abstract:
In a process for manufacture of a chemical product in which a plurality of individual reactant containing feedstreams are combined to form a mixed feedstream for a reactor, and wherein at least one of the plurality of feedstreams is subject to variations in reactant concentration, and another one of the plurality of feedstreams is essentially stable in reactant concentration, a desired ratio of relative reactant concentrations in the mixed feedstream is maintained by a control system which infers a reactant concentration ratio in the mixed feedstream based on process measurements and feed parameters related to the plurality of feedstock containing streams prior to their being combined. In use, flow rate of the feedstream which is essentially stable in reactant concentration is manipulated to maintain the inferred reactant concentrations in the mixed stream.