Abstract:
An olefin polymerization process wherein monomer, at least one olefin comonomer different from the olefin 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.
Abstract:
The present invention provides a system for supplying a gas capable of supplying a gas at a proper flow rate and forming a gas at a proper rate from a gas-forming unit. The invention provides a system for supplying a gas including a gas-forming unit, a gas supply passage for supplying a gas produced from the gas-forming unit, a gas flow rate controller provided in the gas supply passage, a gas discharge passage provided in parallel with the gas supply passage to discharge the gas produced from the gas-forming unit, and a pressure controller provided in the gas discharge passage to control the pressure of the gas flowing through the gas discharge passage. In the above system for supplying a gas, it is possible to optimize the flow rate of the gas that is supplied and the amount of the gas generated by the gas-forming unit.
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. Also an olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation. The fluid slurry is circulated in the loop reaction zone with a pump providing a pressure differential of at least 18 psi.
Abstract:
An olefin polymerization process wherein monomer, at least one olefin comonomer different from the olefin 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.
Abstract:
A system for carrying out the automated processing of fluids. The system has combinable and interchangeable process modules (38, 39, 40), which each contain a control unit (6) and a fluid unit (7) that can be controlled by the control unit in order to execute a module-specific process function. The control units (6) are interconnected via a data bus (10) which is shared by process modules (38, 39, 40), and the fluid units (7) are interconnected via a fluid bus (44) having a number of channels (45). The configuration of at least one portion of the channels (45) of the fluid buses (44) can be varied in the areas of their respective connection to the fluid units (7) by using configuration devices, which can be provided in the form of adapters (41, 42, 43) located between the process modules (38, 39, 40) and the fluid bus (44).
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 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:
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:
The simultaneous synthesis of diverse organic compounds is performed in stackable modules which are moveable among nesting sites located on work station platform. The reactor module includes a block adapted to receive an array of tube-like reactor vessels. The vessels are sized to optionally accept porus polyethelyene microcannisters with radio frequency transmitter tags. Each vessel has a bottom port connected to an outlet tube. A valve block located below the reactor vessels simultaneously controls discharge through the outlet tubes. The valves block includes plates with aligned, relatively moveable sets of rib surfaces which act through Teflon encapsulated silicone O-ring cord sections to simultaneously close rows of outlet tubes. By first utilizing reactor vessels in one set of 48 positions, out of the possible 52 reactor vessel positions in the reactor block, and then utilizing reactor vessels in the other set of 48 positions and shifting the relative position of the collection plate, a single reactor can be employed to discharge into all of the wells of a standard 96 well microtiter collection plate. The apparatus can be used to perform the entire synthesis or only the final cleavage step of radio frequency tagged synthesis.
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.