Abstract:
An electrochemical cell is disclosed having a cell bottom or baseplate that has at least one drain hole therein which is fed by drain canals adjacent an end of the catholyte chamber such that the drain holes are gradually inclined to increase in depth laterally downwardly from the opposing sides of the cell toward the center and longitudinally downwardly from the opposing end of the cell toward the drain hole to permit removal or the addition of the liquid metal cathode from the angled electrolytic cell without requiring disassembly of the cell.
Abstract:
A method for sensitizing multidrug resistant cells to antitumor agents comprosing contacting multidrug resistant cells, with an effective amount of a compound of the formula ##STR1## wherein n is 1, 2 or 3, X is CF.sub.3, --O--CH.sub.3, Br, I, Cl, H, W and S--CH.sub.3 and R.sup.1 and R.sup.2, independently of each other are --CH.sub.3 --CH.sub.2 --CH.sub.3, CH.sub.2 CH.sub.2 OHCH.sub.2 OH, or NR.sup.1 R.sup.2 form a ring ##STR2## wherein R.sup.3 is --CH.sub.3, CH.sub.2 --CH.sub.3, --H, CH.sub.2 OH and CH.sub.2 CH.sub.2 OH.
Abstract:
Method and means for automatically controlling chlor-alkali cells are described. Control is exercised on the basis of a mass flow analysis, starting from a target caustic concentration for the catholyte output, to establish individual set points for optimum cell system operating conditions so as to achieve said target output value. Such control is accomplished by a central automatic control unit which is adapted to monitor the operation of the cell and its associated brine and caustic output subsystems and to institute appropriate corrective actions whenever a tolerance band around one or more of said set points is exceeded.The control unit is further adapted to provide daily and weekly operating summaries and to store said summaries for trends analyses to establish the scope and significance of any long-term degradative processes which might be occurring.
Abstract:
A composite fiber reinforced plastic frame is provided wherein a core material at least partially formed from the continuous wrapping of roved layers of glass fiber impregnated with a catalyzed thermosetting resin within a corrosion resistant liner and the frame is reinforced at the corners.
Abstract:
A process for the preparation of an alkali metal hydroxide and halogen from an alkali metal halide in a plurality of electrolytic cells, wherein each electrolytic cell is physically arranged in series with respect to the other electrolytic cells, the series having a first electrolytic cell and a last electrolytic cell, so that for a selected cell in the series, after the first electrolytic cell, catholyte alkali metal hydroxide from the catholyte chamber of a previous electrolytic cell is conveyed to the catholyte chamber of the selected electrolytic cell. The concentration of the alkali metal hydroxide is progressively increased toward a desired final concentration in the last cell through the series of electrolytic cells. Each electrolytic cell has an anolyte chamber containing an anode and a catholyte chamber containing a cathode, separated by a permselective membrane. The process of this invention is characterized by the improvement wherein the permselective membrane is employed to maximize cell power efficiency corresponding to the concentration of alkali metal hydroxide produced in the catholyte chamber of each cell.
Abstract:
A process of operating an electrochemical cell with a particular catholyte flow pattern is disclosed wherein the cell is angled from the horizontal and the catholyte is fed into a gap in the cathode compartment between the liquid metal cathode and the membrane on the lower first end and exits the gap on the opposing higher second outlet end.
Abstract:
A particular side frame design for use in an electromechanical cell with a catholyte flow pattern is disclosed wherein the cell is angled from the horizontal and the catholyte is fed into a gap in the cathode compartment between the liquid metal cathode and the membrane on the lower first end and exits the gap on the opposing higher second outlet end. The side frame is obliquely angled on the interior of the cell to prevent the escape of the flowable liquid metal cathode and to prevent contact of the acidic catholyte with the cell bottom.
Abstract:
A particular side frame design for use in an electrochemical cell with a catholyte flow pattern is disclosed wherein the cell can be generally horizontal or angled slightly from the horizontal and the catholyte is fed through a transition area into a gap in the catholyte compartment between the liquid metal cathode and the membrane on a first end and exits the gap on an opposing second outlet end. The side frame has opposing sides that are obliquely and downwardly angled in the corners to support the membrane in a wrinkle free manner so that the membrane is obliquely positioned between the liquid metal cathode and the anode. The membrane is above the level of the catholyte where the catholyte enters and exits the catholyte compartment, but drops to a level below the entry and exit points.
Abstract:
A soccerball returner is provided which has a goal portion comprising a ball capturing box-like member with an open front side and a bottom wall which directs a captured ball toward a ball return mechanism. The ball return mechanism includes a ball engaging element, which may be in the form of a motor driven crank arm or a spring loaded solenoid, to impart sufficient momentum to the ball to cause it to be driven away from the soccerball returner.
Abstract:
An electrolytic membrane cell for the electrochemical production of an alkali metal hydrosulfite by the reduction of an alkali metal biosulfite component of a circulated aqueous catholyte solution is provided. The cell utilizes an improved extended surface multipass porous cathode, an improved catholyte flow path and a hydrophilically treated separator mesh that separates the cation exchange membrane from the anode.