Abstract:
A metering and wetting system for polyelectrolyte, dry powders or the like, characterized by a volumetric feeder, a pressurized pneumatic system for atomizing the dry polyelectrolyte received from the volumetric feeder, an air dryer assembly for removing moisture from the air supplied to said pneumatic system, a mixing-wetting chamber for wetting substantially all of the atomized particles of polyelectrolyte, and a mixing tank for agitating and aging the so-called polyelectrolyte to transfer same into solution with the aid of mechanical agitation and, according to one aspect of the invention, a scrubber assembly mounted on the top of the mixing tank.
Abstract:
A valve arrangement for distributing liquid and/or gaseous substances from a plurality of substance-storing vessels to a processing vessel. The valve arrangement is characterized by an elongated conduit having an output end connectable to a receiving vessel and a plurality of openings along the length thereof the supply conduits associated with said further openings in the elongated conduit are respectively connectable to substance-storing vessels. Valves are disposed between the supply conduits and the further openings for selectively placing the respective supply conduits in fluid communication with the output end of the elongated conduit.
Abstract:
A system for adding material to a liquid on variable demand is controlled by a switch responsive to liquid pressure for operating the material-adding means whenever a pressure drop shows that the liquid is withdrawn. A delay means operates the material adding means for a pre-determined interval after the switch changes state in response to stoppage of the withdrawal of the liquid. Also, a valve preferably prevents liquid entry into the system except during liquid withdrawal. The material-adding means is then activated on each liquid withdrawal and for a fixed interval thereafter, and no liquid enters the system without having added material. The system can also be operated without a delay means when the input is controlled so no input can occur except when the system is operating.
Abstract:
A method and apparatus for producing particulated gelatinous substances, such as gelatinous polymers, and solutions of these materials in which the gel is formed, in a reaction chamber equipped with a hydraulically actuated piston and perforate extrusion head and the gelatinous product is subsequently extruded into a stream of solvent or nonsolvent fluid flowing at relatively high velocity on the exterior of the perforate head. The gelatinous substance is displaced from the reaction chamber by introducing a fluid into the reaction chamber above the piston at a sufficiently elevated pressure to displace the substance from the chamber through the perforate extrusion head. The hydraulic pressure actuating the piston is adjusted to maintain the piston in pressure balance during the extrusion operation. Gravitational forces acting upon the piston cause it to rest upon the upper surface of the gelatinous mass and to advance downwardly through the reactor as the gel is displaced from the chamber. The method and apparatus of this invention is particularly suited for the preparation of aqueous polymer solutions useful as flooding agents in the recovery of petroleum by water flooding, and is especially adapted for installation at the site of a water injection well.