Abstract:
Dihydric phenols produced by rearrangement of p-dialkylbenzene hydroperoxides are recovered from the rearrangement effluent by distilling byproduct ketone in a distillation tower from a mixture of the rearrangement effluent with benzene and dihydric phenol-containing aqueous feed and extracting impurities and aromatic byproducts with benzene. Benzene containing dissolved impurities and aromatic byproducts, and water containing the dihydric phenol are removed from the bottom of the distillation tower and separated in an extractor column, the dihydric phenol is recovered from its aqueous solution by crystallization and the mother liquor from the crystallization step is recycled to the distillation tower.
Abstract:
Dihydric phenols produced by rearrangement of p-dialkylbenzene hydroperoxides are recovered from the rearrangement effluent by distilling byproduct ketone in a distillation tower from a mixture of the rearrangement effluent with benzene and dihydric phenol-containing aqueous feed and extracting impurities and aromatic byproducts with benzene. Benzene containing dissolved impurities and aromatic byproducts, and water containing the dihydric phenol are removed from the bottom of the distillation tower and separated in an extractor column, the dihydric phenol is recovered from its aqueous solution by crystallization and the mother liquor from the crystallization step is recycled to the distillation tower.
Abstract:
An apparatus for disposing liquid effluent which has been separated from a fluid system includes a compressor for supplying a compressed fluid to the fluid system. An engine for driving the compressor has an exhaust system which vents an exhaust fluid to an atmosphere external to the fluid system. An aftercooler is flow connected to an outlet of the compressor. A separating means for removing liquid effluent from the compressed fluid is flow connected to the aftercooler. The separating means has a conduit through which the separated liquid effluent flows. A reservoir for collecting the liquid effluent is flow connected in fluid receiving relation to the conduit of the separating means and flow connected in fluid supplying relation to the exhaust system of the engine. During operation, the collected liquid effluent flows from the reservoir into the exhaust system, whereupon entry therein, the exhaust fluid vaporizes the liquid effluent.
Abstract:
There is provided a dredge vehicle supporting a dredge assembly for collecting ore particles from the ocean floor. The dredge assembly includes several nozzles extending forwardly of the supports for the vehicle, pump means for developing a suction flow into and through the nozzles and a screen to separate the ore particles from most of the water before feeding the ore into, e.g., an airlift system leading to a surface vessel. Preferably, an intake of clear water from above the vehicle is used to carry the ore to and up the airlift system.Advantageously, the water flows straight through the system and exhausts from the rear of the vehicle, and mud is cleared from the ore before bringing the ore to the surface.
Abstract:
A continuous process for producing para-dialkylbenzene dihydroperoxide by the liquid phase oxidation of para-dialkylbenzene with molecular oxygen in the presence of an aqueous alkali metal hydroxide wherein the para-dialkylbenzene dihydroperoxide is recovered substantially free of water, monohydroperoxide and unreacted dialkylbenzene and wherein the monohydroperoxide and unreacted dialkylbenzene are treated to produce a material low in impurities suitable for recycle to the oxidation reactor.
Abstract:
Method and apparatus for performing logical duplication of backup data in a computer system including a host computer, a storage device storing data for the host computer, and at least one computer-readable backup storage medium storing backup data copied from the storage device, is disclosed. In one embodiment, a method copies only a subset of the backup data onto at least one computer-readable duplicate backup storage medium as duplicate backup data so that the duplicate backup storage medium is not an exact duplicate of the at least one backup storage medium. For example, in one embodiment, in which the backup data includes a plurality of work items, a subset of the work items are copied onto the at least one duplicate backup storage medium. Method and apparatus for restoring backup data of interest from duplicate backup storage media are also disclosed.
Abstract:
A liquid flow system which comprises means to screen long slender objects from a liquid flowing in a conduit. The screening means comprises a set of opposed, aligned, undulating surfaces, each having axes of curvature extending in at least two directions. In another embodiment there is a primary set of corrugated surfaces, with axes extending in a single direction transverse to the direction of fluid flow, and a secondary set of corrugated surfaces mounted on the primary set with axes transverse to the direction of fluid flow and transverse to the axes of the primary set. The undulating surfaces are preferably formed as primary corrugated plates with secondary corrugated plates transversely mounted on each primary corrugated plate. The primary corrugated plates can be moved apart to permit the removal of trapped debris. Dimpled plates can alternatively be us
Abstract:
Method and apparatus for performing logical duplication of backup data in a computer system including a host computer, a storage device storing data for the host computer, and at least one computer-readable backup storage medium storing backup data copied from the storage device, is disclosed. In one embodiment, a method copies only a subset of the backup data onto at least one computer-readable duplicate backup storage medium as duplicate backup data so that the duplicate backup storage medium is not an exact duplicate of the at least one backup storage medium. For example, in one embodiment, in which the backup data includes a plurality of work items, a subset of the work items are copied onto the at least one duplicate backup storage medium. Method and apparatus for restoring backup data of interest from duplicate backup storage media are also disclosed.
Abstract:
An embodiment of the invention comprises a pneumatically operated regulating valve having porting therein for venting therethrough the pilot-signal, pressured fluid which is normally conducted to the front clutch internal control valve of a power transmission. The regulating valve is in communication with a source of pneumatic pressures. When the pneumatic pressure of the source is elevated, it causes the regulating valve to vent the pilot-signal, pressured fluid. Resultantly, the transmission is prevented from going into its lock-up mode and, instead, remains in its converter mode. The method sets forth the steps of modifying a standard transmission, without altering the latter's as-built configuration and arrangement, to incorporate the novel controlling means.