Abstract:
REACTIONS IN THE RANGE OF ABOUT 25* TO 40*C.; REMOVING CARBONATED SOLUTION FROM THE TOWER. 1. A METHOD FOR THE CARBONATION OF SULPHIDE-CONTAINING GREEN LIQUOR SOLUTIONS OBTAINED FROM THE RECOVERY SYSTEMS OF PULP MILLS USING SODIUM BASE DIGESTION COMPRISING PASSING GREEN LIQUOR SOLUTION THROUGH AN ABSORPTION TOWER COUNTER-CURRENTLY TO A FLOW OF CARBONATION GAS CONTAINING AT LEAST TWICE THE AMOUNT OF CARBON DIOXIDE THAT THE GREEN LIQUOR IS CAPABLE OF ABSORBING FEEDING SAID CARBONATION GAS INTO A LOWER PORTION OF SAID TOWER PACKED WITH CONTACT SURFACE INCREASING PACKING, CONTACTING SAID CARBONATION GAS WITH SAID GREEN LIQUOR IN SAID LOWER PORTION, SAID AMOUNT OF GAS BEING SUFFICIENT TO CONVERT THE SULPHITE CONTENT OF SAID SOLUTION TO BISULPHIDE, CARBONATE AND BICARBONATE WHILE LIBERATING A MINOR PORTION ONLY OF SAID SULPHIDE CONTENT AS HYDROGEN SULPHIDE ALLOWING UNABSORBED CARBON DIOXIDE AND SAID LIBERATED HYDROGEN SULPHIDE TO PASS UPWARD INTO AN UNPACKED UPPER PORTION OF SAID TOWER, SPRAYING FURTHER FRESH GREEN LIQUOR SOLUTION FROM ABOVE SO THAT FINE DROPLETS OF GREEN LIQUOR SOLUTION CONTACT THE GASES RISING IN THE UNPACKED UPPER TOWER PORTION, SELECTIVELY REABSORBING SUBSTANTIALLY ALL OF SAID HYDROGEN SULPHIDE IN SAID FRESH GREEN LIQUOR SOLUTION AS BISULPHIDE; MAINTAINING A TEMPERATURE FAVOURABLE TO THE
Abstract:
In a paper machine a paper web is conducted by a continuous felt or the like into the press nip between two rolls. One roll is a suction roll and the other roll is a pressure roll having a single pressure opening located opposite to the suction opening of the suction roll such that it does not encompass the nip between the two rolls. From the pressure opening of the pressure roll a gas, preferably heated, is conducted into the space between the rolls most appropriately before the press nip. A blocking member such as a beam with a triangular cross section may be positioned on the incoming side of the rolls to form a confined space between it and the rolls to prevent escape of the warmed, pressurized gas.
Abstract:
This disclosure relates to a light mortar for fin-stabilized projectiles comprising a mortar barrel defined by upper and lower tubes, means for pivotally mounting the upper and lower tubes relative to each other about an axis transverse to the axis of the mortar barrel, linkage means disposed between the upper and lower tubes for imparting a relative force therebetween to pivotally move the upper and lower tubes relative to each other about the pivotal mounting means between a coaxially aligned firing position and a position of misalignment of the tube axes, a pair of support columns between the upper and lower tubes with the pivotal mounting means being in spanning relationship between the support columns, the linkage means also being disposed between the support columns and including a toggle system having bell crank means for imparting the relative force to pivotally move the upper tube relative to the lower tube, and a half-shell supported by the support columns adjacent an upper end of the lower tube with means for locking a lower end of the upper tube to the latter-mentioned half-shell.
Abstract:
There is disclosed a device for dissolving a poorly soluble gas in a liquid, especially for aerating water, a device which comprises two parallel pipes fitted one inside the other, an annular throttling zone at the upper end of the inner pipe for reducing the pressure of the liquid, means for feeding the gas into the throttling zone for dissolving the gas in the liquid, and an inlet and outlet for the liquid. In this device the throttling zone has been fitted in the annular space between the pipes fitted one inside the other, while the inner pipe is connected to the inlet for the liquid, and pumping means has been provided in the inner pipe for creating a sufficient surface level difference between the inside and the outside of the device in order to cause the liquid to flow through the annular throttling zone.
Abstract:
A coupling arrangement capable of being released while the coupling is under considerable tension and particularly adapted to connect an object to a roller chain or similar device having at least two cross elements like the rollers of a chain. A lever has an offset front end which engages one of the cross members and has a coupling element pivoted to its other end to engage the other crossed element. The offset end of the lever is recessed to pivotally engage the first cross element and the coupling element has a recess which engages under the second cross element. The line of force between the lever and object is offset to one side of the first cross element to provide a moment of force that assists pivoting the lever to a released position about the first cross element. A spring urged latch normally maintains the coupling element in its locked position in which pivotal movement of the lever about the first cross element is prevented.
Abstract:
A stabilization fin for use with projectiles which demonstrates improved aerodynamic stability as a result of unique crosssection and profile. The fin assembly is defined by multiple fins extending radially from a carrier tube. Each fin has a precisely tapered outer profile while the sides incorporate longitudinal depressions. A series of these depressions extend radially along the side of each fin and each depression originates at a point to the rear of the leading edge of the fin profile and terminates at a point ahead of the trailing edge.
Abstract:
THE PRESENT INVENTION CONCERNS A RING DRILLING DEVICE ADAPTED FOR OPERATING IN A TUNNEL AND COMPRISING A BOOM ROTATING ABOUT ITS LONGITUDINAL AXIS AND TO WHICH IS ATTACHED A CRADLE TRANSVERSE THERETO FOR THE FEEDING DEVICE FOR THE ROCK DRILL. ON THE ROTATABLE BOOM, THERE IS MOUNTED A BOOM HEAD TURNABLE ABOUT AN AXIS PERPENDICULAR TO SAID BOOM, THE CRADLE BEING MOUNTED ON THIS TURNABLE BOOM HEAD TO BE ROTATABLE ABOUT IS LONGITUDINAL AXIS.
Abstract:
A drying cylinder in which the inside of the mantle or at least its end portions have circumferential grooves for collecting condensate. The inlet of a condensate drain pipe is placed in each groove and the pipes have been joined to a common condensate collecting pipe having adjustment means for regulating the amount of condensate from the drain pipes. The condensate collecting pipe is further connected to a condensate draining system of the cylinder.