Abstract:
A tube supporting device is described which in a preferred embodiment comprises ferrules (1) located on the tubes (2), brace means (3) connecting the ferrules (1) and cleats (7) connecting rows of tubes (2). The brace means (3) may be held in position by means of a retaining band (8) which itself is located in position by a stave (9). The support structure is capable of being assembled as the tube bundle is assembled.
Abstract:
The system comprises a flow through reaction vessel having an inlet, an outlet and a reaction zone intermediate said inlet and outlet. The system further comprises reagent feed means for introducing one or more reagents into said vessel, said one or more reagents forming one or more reaction products in said reaction zone. Said reagent feed means at least include a liquid feed means for introducing a liquid into said inlet of said vessel. The vessel has a liquid evaporation zone intermediate said inlet and said reaction zone. Said liquid evaporation zone comprises an evaporation structure contacting said liquid and providing a liquid residence time in said liquid evaporation zone improving evaporation of said liquid.
Abstract:
An apparatus and method for synthesis and screening of materials are disclosed. According to one aspect of the present invention, a parallel batch reactor for effecting chemical reactions includes a pressure chamber, and a plurality of reaction wells. Each of the reaction wells is in isolatable fluid communication with the pressure chamber such that during a first pressurizing stage of operation, each of the reaction wells can be simultaneously pressurized through common fluid communication with the pressure chamber, and such that during a second reaction stage of operation, each of the reaction wells can be fluidically isolated from at least one other of said plurality of reaction wells.
Abstract:
A modular reactor system comprises a backplane connected to a computer and a thermal control unit. The backplane includes a plurality of seats for releasably holding a plurality of modules. Each module holds a reactor vessel that may be used to conduct experiments. A plurality of laboratory instruments, such as motors, switches, sensors and pumps are included within the backplane and on the reactor modules. These laboratory instruments are utilized to perform work on the contents of the reactor vessels when the modules holding the reactor vessels are positioned in the backplane. A computer is connected to the backplane and controls the laboratory instruments within the backplane and on the reactor modules positioned within the backplane. A thermal control unit provides a thermal control fluid that is delivered to the reactors in the reactor modules when the modules are properly seated in the backplane.
Abstract:
The system comprises a tubular vessel allowing a flow of fluid through said vessel and an assembly for housing said vessel. The assembly comprises a base block having a first channel formed therein for removably housing the vessel, said first channel having first and second channel openings allowing introduction and/or discharge of a fluid into and from said first channel. The assembly also comprises a cover element having a bottom surface being releasably attachable to the first face of the base block. A first sealing element is provided between the first face of the base block and the bottom surface of the cover element, the first sealing element surrounding the first channel opening completely, and thereby sealing gastight around said first channel opening between the cover element and the base block. The system further comprises a second sealing element located in the first channel, said second sealing element sealing gastight against the inside of the first channel and the outside of the vessel.
Abstract:
The present invention provides a process for the homogeneous mixing of a finely dispersed solid phase with a fluid in a vessel (12), whereby a means (11) for mixing the solid phase (13) is moveably arranged in the vessel (12) and whereby the diameter of the means (11) is 70-99% of the inner diameter of the vessel (12). Further, the present invention comprises an array, which comprises a plurality of devices according to the invention for the parallel homogeneous mixing of a plurality of solid phases with the same or different fluids.
Abstract:
The invention concerns a device for carrying out a reaction in liquid medium during which there is gas evolution. The inventive device comprises at least: a static mixer (3) wherein emerges at least a pipe (1) supplying liquid medium; a cyclone reactor (4) connected to said static mixer (3) and provided with a vent (5) for evacuating the gas or gases formed and means for evacuating (6, 7) the liquid medium. The invention also concerns a method whereby a reaction is carried out in liquid medium during which there is gas evolution. The invention can be used particularly for a reaction involving a peroxide such as hydrogen peroxide and, in particular, for reducing chlorine contained in a liquid effluent.
Abstract:
An upflow reactor for the production of bisphenol A from acetone and phenol includes a vessel, a catalyst bed disposed within the vessel, and a reactant distribution/product collection system disposed within the vessel. The reactant distribution/product collection system includes a perforated distributor disposed at a lower end of the reactor. The reactant distribution/product collection system further includes a perforated collector disposed at an upper end of the reactor. A method for producing bisphenol A from acetone and phenol includes introducing the reacting mixture containing acetone and phenol to the distributor, directing it upward through the catalyst bed, and recovering the reacted acetone and phenol as bisphenol A together with other isomers and non reacted species. A method for avoiding catalyst bead carryover from the bed in an upflow reactor includes receiving a product of the upflow reactor into the collector disposed at an upper end of the reactor through a screen with proper slit size.
Abstract:
A method of precipitating a poly(arylene ether) includes preparing a poly(arylene ether) solution comprising a poly(arylene ether) and a solvent, combining the poly (arylene ether) solution with an antisolvent to form a poly(arylene ether) dispersion comprising a poly(arylene ether) solid, separating the poly(arylene ether) solid from the poly(arylene ether) dispersion to form an isolated poly(arylene ether) solid, determining a particle size distribution of the poly(arylene ether) solid prior to separating the poly(arylene ether) solid from the poly(arylene ether) dispersion, and adjusting a precipitation parameter in response to the particle size distribution. Although the measured particle size distribution is very different from the particle size distribution of the solid poly(arylene ether) ultimately isolated, it is useful for controlling the process. The method may be automated to rapidly adjust precipitation conditions in response to the particle size distribution measurements. An apparatus for carrying out the method is also described.
Abstract:
The invention concerns a device for synthesis of radiopharmaceutical products based on chemical reagents contained in bottles, said device comprising several reaction compartments, transfer means between said bottles and said reaction compartments as well as mechanical means acting on said transfer means and enabling to monitor and control mechanically the transfer of chemical reagents. The invention is characterized in that it comprises: a fixed module including at least the mechanical means; a removable and disposable module, essentially in the shape of a support, whereon are arranged the transfer means between said bottles and said reaction compartments, said removable and disposable module not including any mechanical means; and means for securing said removable and disposable module to said fixed module.