Abstract: A distilled water fountain which is capable of supplying the users with purified icy, warm and hot drinking water and composed of a pre-heating exchanger, a condensing-and-heating exchanger, a distilled water tank, a steam generator, and an electronic chilling device. Running water flows into the pre-heating exchanger through water intake pipe, and further flows through the condensing-and-heating exchange into a steam generator wherein the water is vaporized and then condensed into distilled water for storage in the distilled water tank. The distilled water may be made available directly in warm water condition, or may be cooled into icy water through electronic chilling device, or heated into hot water through steam generator for drinking by users.

Abstract: A distillation apparatus includes a distillation unit for distilling feed water. The distillation unit includes an evaporation part, a condensation part and a hydrophobic porous membrane interposed between the evaporation part and the condensation part, which are integrated with one another. A heating unit for heating the feed water and a cooling portion for cooling distillate produced by distillation of the feed water are provided apart from the distillation unit. One or both of the heating unit and the cooling unit are provided with a heat pump. With this construction, an additional heater does not need to be provided, and the distillation unit and both of the heating unit and the cooling unit can be changed in size and performance independently of each other, so that the overall size of the distillation apparatus can be reduced.

Abstract: Process for obtaining purified hydrogen peroxide solutions, consisting in evaporating the crude aqueous hydrogen peroxide solution containing the impurities and feeding by means of the vapour phase produced the foot of a distillation column provided in its lower part with a zone for washing the vapour phase with a small flow of liquid which refluxes in the bottom of the column and which has the same composition as the purified aqueous hydrogen peroxide solution forming the product leaving the column, in drawing off this purified product at a column height such that the draw-off is carried out above the vapour phase washing zone and in collecting at the bottom of the column a residue consisting of the small flow of washing liquid which contains most of the impurities. The washing zone has a diameter which is greater than that of the remainder of the column.Distillation column for carrying out the process.

Abstract: The present invention is an improved process for the recovery of ethylene glycol from spent glycol generated in the manufacture of polyethylene terephthalate. The spent glycol typically consists of metal oxide catalyst residues, low molecular weight terephthalate oligomers, diethylene glycol and other trace impurities. The improved process of the present invention is based on the principle that elevating the temperature of the spent glycol increases the solubility of the low molecular weight oligomers so that the low molecular weight oligomers can be dissolved in the ethylene glycol and further that the spent glycol at an elevated temperature may be passed through an ion exchange bed to remove metal oxide catalysts, color forming impurities and other trace impurities.

Abstract: This invention relates to a process for the production of absolute alcohol from aqueous alcohol, whereby saving of energy to a greater extent is rendered possible in a more simple process, as compared with the prior art azeotropic distillation method using benzene or cyclohexane. That is, aqueous alcohol is subjected to extractive distillation in a first distillation column under such a condition that a liquid and gas of a solvent simultaneously coexist using low pressure propane, propylene and butane as the solvent, absolute alcohol substantially free from water is recovered from the bottom of the distillation column and subjected to stripping of hydrocarbons in a second distillation column, during which the gaseous phases of the first and second distillation columns are mixed and compressed, utilized through recompression as a heat source of a reboiler of the first distillation column, subjected to separation of water content and recycled to the upper parts of the first and second distillation columns.

Abstract: The present invention provides a spray-drying granulation apparatus having a chamber comprising (a) an upper section which is a spray-drying section for spraying a feed solution from a nozzle and drying the formed droplets with hot air and (b) a lower section which is a fluidized granulation section, in which apparatus there is used, as the nozzle for spraying a feed solution, a two-fluid pressure nozzle comprising a centrifugal pressure nozzle for spraying a feed solution and a cylindrical pipe for blowing out a high-speed gas, provided around the centrifugal pressure nozzle. This spray-drying granulation apparatus enables spraying of even a feed solution of large volume with only one nozzle. Further with the two-fluid pressure nozzle of the apparatus, there is no need of replacement of nozzle parts when the feed rate, concentration, viscosity, kind, etc.

Abstract: A water distiller includes a raw water chamber for storing raw water, a main vaporization tank coupled with the raw water chamber for vaporizing raw water, a condensation device coupled with the main vaporization tank for condensing steam from the main vaporization tank, and a distilled water chamber communicated with the condensing conduit unit for accepting and storing distilled water. An auxiliary vaporization tank is communicated with the main vaporization tank and is mounted on the top end portion of the main vaporization tank. Each of the main and auxiliary vaporization tanks has a generally conical top wall which has a lower end portion that is provided with an annular water collecting groove formed in the inner surface thereof. Each of the water collecting grooves has a bottom wall which has a discharge opening formed therethrough.

Abstract: A solar apparatus such as a solar water heater or cooler comprising a cell which is partially transparent to the sun's rays and has an internal section formed by an assembly of two casing which surround one another and define the variable capacity of the absorber as well as various means for supplying, storing and discharging water.

Abstract: A process for obtaining a substantially dry particulate solid in the form of particles with a narrow particle size distribution which comprises atomising a feedstock comprising a solution or dispersion of the solid in a liquid medium into droplets with a narrow size distribution and a volume median diameter from 100 to 250 micrometers in a spray dryer whereby the droplets are converted into the dry particulate solid within the spray dryer.

Abstract: Heptane cannot be removed from heptane-vinyl acetate mixtures by distillation because of the minimum boiling azeotrope. Heptane can be readily removed from vinyl acetate by extractive distillation. Typical effective agents are dimethylsulfoxide, phenol, diisobutyl ketone and hexyl acetate.

Abstract: The present invention discloses a method to separate each component from a mixed solution of organic solvents obtained during the production of .alpha.-L-aspartyl-L-phenylalanine methyl ester, which is useful as a sweetener, namely, a mixed solution of acetic acid and toluene or a mixed solution of acetic acid, toluene and formic acid, recovering each component with a high recovery ratio with as small number of operations as possible. The method rationalizes the process and is highly valuable in practical use.

Abstract: Mixtures containing alkylaromatrics chlorinated in the side chain are worked up by blowing them out with an inert gas before distillation at elevated temperature and carrying out the distillation in the presence of amines and/or chlorinated amines.

Abstract: 2-(4-Isobutylphenyl)-propionic acid is purified by subjecting it to a vacuum rectification, in which the temperature is below the decomposition temperature of the acid.

Abstract: In concentrating solutions containing 1 to 10% by weight of salts and resins, the yield and economics and trouble-free running can be improved by using a flow tube which has a steady curvature at least in the last third and is sized in its diameter in such a way that the mean flow velocity at the tube outlet is at least 50 m/second, and at least 90% by weight of the vaporizable components are evaporated off at driving temperature gradients of 20.degree. to 200.degree. C. between the heating medium and the solution.

Abstract: A low profile water distiller has a housing. A steam chamber is located within the housing having a horizontal dimension greater than its vertical height. A condenser is also located within the housing having a horizontal dimension greater than its vertical height. The vertical height of the condenser is generally the same as the vertical height of the steam chamber. A raw water conduit extends in a generally horizontal plane within the housing for delivering water to be distilled into the steam chamber. A steam conduit also extends within the housing for delivering steam from the steam chamber to the condenser. The steam conduit extends in a generally horizontal plane parallel to the generally horizontal plane of the raw water conduit. An air circulation channel within the housing draws cooling air through the condenser in a generally horizontal path parallel to the generally horizontal planes of the raw water conduit and the steam conduit.

Abstract: Disclosed is a continuous method for refining acetic anhydride produced by the reaction of ketene and acetic acid by means of a vacuum distillation system to provide a refined material comprised of at least 99.5 weight percent acetic anhydride, not more than 0.5 weight percent acetic acid and not more than about 90 parts per million (ppm) diketene.

Abstract: Formic acid difficult to separate from acetic acid by conventional distillation or rectification because of the close proximity of their boiling points. Formic acid can be readily separated from acetic acid by using azeotropic distillation. Effective agents are cyclopentane and tetrachloroethylene.

Abstract: Octene-1 is difficult to separate from several of its isomers by conventional distillation or rectification because of the closeness of their boiling points. Octene-1 can be readily separated from its close boiling isomers by azeotropic or extractive distillation. Effective agents are: for azeotropic distillation, t-amyl methyl ether; for extractive distillation, isophorone.

Abstract: A catalytic distillation system is provided having a first component which is a particulate catalyst useful for carrying out the desired chemical reaction and a second component which is a hollow geometric shape having openings through the outer surface to allow gas and liquid to pass therethrough. The two components are mixed to provide the desired open space and loaded into a distillation column reactor. The hollow geometric shapes provides the spacing, while the openings permit the gas and liquid to flow through, thus providing the requisite vapor liquid contact space and surfaces.

Abstract: Impure propylene oxide is purified by a distillation process wherein it is (a) extractively distilled in a first column using a C.sub.2 to C.sub.6 alkylene glycol extractive distillation agent to form a first overhead fraction comprising propylene oxide, C.sub.5 -C.sub.7 hydrocarbons methanol, water and oxygen-containing impurities, (b) wherein the first overhead fraction is separated in a second column into a second overhead fraction comprising most of the pentanes, pentenes and oxygen-containing impurities and a partially purified propylene oxide bottoms fraction comprising propylene oxide, hexenes, hexanes, and only residual quantities of pentenes and pentanes, (c) wherein the partially purified bottoms fraction is extracting distilled in a third column using a C.sub.7 -C.sub.