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7815732 |
Continuous method for partially crystallising a solution and a device for carrying out said method
The invention relates to a device for the partial crystallization of a phase in a solution, comprising at least one pump for circulation of the solution in a circuit of a heat exchanger formed from...
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7540884 |
Method for performing the purifying separation of crystals out their suspension in a mother liquor
A process for purifying removal of crystals from their suspension in mother liquor by means of a washing column having forced transport in which the process chamber is encased by a metal wall...
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7458231 |
Simultaneous regasification of liquefied natural gas and desalination
A process and apparatus is presented for the desalination of water by freezing seawater. The process is integrated into a liquefied natural gas regasification system.
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7189328 |
Method for extraction of dissolved trace materials from solution
A method for separating dissolved materials, including organic and inorganic solids and volatile constituents, from a liquid or aqueous solvent is disclosed. The method first extracts water from...
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6863916 |
Apparatus and methods for making frozen food products
An apparatus for making frozen food products having a horizontal mixing spindle with a continuous, closed-loop, recessed, crisscrossed track around its outer lengthwise surface. A paddle wheel...
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6658889 |
Apparatus for producing potable water and slush from sea water or brine
A water de-salination and ice slush producing system separates potable water and brine from sea water in a reverse osmosis apparatus. A chiller tube produces ice slush from the sea water mixed with...
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6609384 |
Dynamic type ice cold storage method
It is intended to provide a dynamic type ice cold storage method and system capable of efficiently suppressing, by an appropriate replenishment of water, an increase in concentration of an aqueous...
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6378329 |
Method for determining the variable concentrations of ice in binary ice volumes
Method for determining changing ice concentration in binary ice volumes with the steps: carrying out mechanical work in the volume to be measured with an electric motor, determining the electric...
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6305189 |
Method and installation for continuous crystallization of liquids by freezing
An installation is described for continuous crystallization of liquids by freezing. The installation performs liquid preliminary cooling under predetermined temperature; adding gas into cooled...
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5575160 |
Freeze crystallization for the removal of water from a solution of dissolved solids
A freeze crystallization concentration system is disclosed for separating a liquid feed stream into a more purified liquid and a concentrate in which only a single pass through a...
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5537832 |
Freeze crystrallization for the removal of water from a solution of dissolved solids
A freeze crystallization concentration system is disclosed for separating a liquid feed stream into a more purified liquid and a concentrate in which only a single pass through a...
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5346674 |
Process and apparatus for removal of impurities from flue gases
A process and apparatus is disclosed for removing impurities from gases such as flue gases. A liquified gas such as nitrogen is introduced into direct contact with the gases to be cleaned of...
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5139549 |
Apparatus and method for cooling using aqueous ice slurry
An aqueous ice slurry is fed by a conduit from a freeze exchanger directly to one or more heat exchangers for cooling or air conditioning one of more enclosed or defined spaces. Warm water...
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5102544 |
Apparatus for continuously removing crystals from a mother liquor and for washing the crystals
Apparatus for continuously removing from the mother liquor the crystals contained in a suspension of crystals in the mother liquor and for washing the crystals with a washing liquid, comprising a...
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5057290 |
Process and apparatus for the low temperature recovery of ferrous chloride from spent hydrochloric acid pickle liquors
Processes and apparatus for the closed-loop regeneration of spent hydrochloric acid pickle liquors that have been used to pickle ferrous metals by recovering ferrous chloride from the spent pickle...
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5037463 |
Freeze concentration and precipitate removal system
A method of removing contaminants from an aqueous waste stream comprising feeding a contaminated aqueous liquid to the lower internal space of a feed tank and cooling the liquid in the tank to a...
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4830645 |
Freeze concentration system and method
A continuous, counter current freeze concentration system and method for concentrating aqueous solutions such as fruit juices, coffee and cold water soluble tea extracts, milk, beer, wine, vinegar,...
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4806318 |
Apparatus for purifying crystals
An apparatus for purifying crystals comprises a crystal purifying tower having a transverse cross-section of two partially overlapping circles, stirrers each comprising a rotational shaft passing...
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4798131 |
Method and apparatus for tartars separation
An externally cooled cylindrical vessel has a draft tube centered in the lower half thereof. A continuous circulation seeded with tartars crystals includes a fast downward flow through the draft...
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4787970 |
Process and system for dewatering metal oxide sludge
A process of the type employing freezing and thawing of metal hydroxide sludge to effect phase separation by gravity settling of solids to permit removal of the purified water, and a preferred...
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4713102 |
Method of concentrating multicomponent liquid products
A method and apparatus for concentrating multicomponent liquid product containing volatile and nonvolatile constituents are provided, comprising mixing liquid product with liquid refrigerant gas in...
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4697428 |
Device for concentrating solutions
The invention relates to a device for concentrating solutions by partly freezing-out solvent, consisting of a vessel surrounded laterally by an insulated cooling jacket, the vessel comprising a...
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4632809 |
Apparatus for the crystallization/separation of material mixtures
A crystallization/separation apparatus is disclosed for material mixtures having vertical crystallization column, cooling and heating devices, feeding-in and withdrawal connections, pumps, valves,...
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RE32241 |
Fractional crystallization process
A single or multi-step fractional crystallization process and apparatus for separating fluid material having two or more components, the material flowing down a cooled wall surface and a component...
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4552575 |
Method for the mass separation of a liquid mixture through fractional crystallization
The invention relates to a method and an apparatus for the mass separation of a liquid mixture through fractional crystallization, wherein the crystal layer is crystallized on the indirectly cooled...
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4551159 |
Ice making machine and method
The invention is a method for making ice in a container the side walls of which are cooled to cool a solution of less than eutectic concentration to form ice crystals wherein the sides of the...
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4544391 |
Method for separation of solid mixtures by simultaneous multi-stage recrystallization
A method for separating a desired component from a solid mixture by repeated recrystallization in a single vertical crystallizer having a plurality of chambers partitioned by solid-liquid...
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4474031 |
Heatpump
A system for extracting heat from low temperature water includes a source of water at a temperature between approximately 0° C. and 10° C. and a heat pump removing heat from the water and t...
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4468930 |
Freeze crystallization subassembly
The invention is directed to a freeze crystallization subassembly having means for continuously removing crystals formed on a heat transfer surface from the surface. A scraper shuttle is moved...
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4438634 |
Freeze concentration apparatus
Disclosed is an apparatus useful in freeze concentration processes such as in the concentration of fruit juices. The apparatus performs both the recrystallization and ice-liquid separation steps of...
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4316368 |
Multi-stage counter-current concentrating method
A system and method for concentrating aqueous beverages such as fruit juices, beer, wine, vinegar, tea, coffee, and the like in which a slurry of feed liquid and seed crystals is formed in a...
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4309878 |
Process and apparatus for separating and purifying a crystalline material
An apparatus and process for purifying and separating a crystalline compound from its impurities in a slurry containing same, said process comprising introducing said slurry under pressure into a...
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4291550 |
Fluidized bed crystallization apparatus and method
A method of crystallizing or freezing out a component of a mixture composed of a liquid and a dissolved or suspended solid material, or both, by passing the mixture upwardly through a column...
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4279130 |
Recovery of 1,3-butadiene by fractional crystallization from four-carbon mixtures
Freezing and melting techniques are described for separating 1,3-butadiene from a mixture of four-carbon compounds by fractional freezing of the liquid mixture and by fractional melting thereof. It...
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4267703 |
Method and apparatus for manufacturing crystalline food products
A feed stock comprising sugar, milk solids, a significant amount of moisture, and in some instances chocolate, is raised to a temperature of about 125° C. and at the same time is condensed to have ...
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4256717 |
Silicon purification method
A method for purifying silicon comprises the steps of providing a body of molten silicon-rich material and extracting heat therefrom to provide a solid phase containing silicon in crystal form and...
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4256576 |
Process for segregating solid substances from a liquid phase
Process is provided for the creation of crystal aggregates in one part of a tank by heat transfer from a fluid disposed in another part of the tank and maintained by heating or by cooling at a...
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4202859 |
Crystallizer
A crystallizer which comprises a vertically mounted elongated container that contains at least one bundle of spaced cooling pipes extending longitudinally of the container and a wing attached to a...
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4194557 |
Cooler for mixtures of crystals and crystallizing liquid in the production of sugar and related products
A cooler for mixtures of crystals and crystallizing liquid in the production of sugar and related products comprises a bundle of vertical pipes for the passage of such a mixture from a bottom...
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4170881 |
Method of and apparatus for the concentration of crystallizable liquid
Crystallizable liquid solutions (i.e. solutions with crystallizable solvents) are concentrated by passing them between two cooled surfaces in a direction transverse to the action of gravity, the...
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4112702 |
Freeze desalination and concentration apparatus
A freeze desalination and concentration apparatus comprising a desalination unit including mounted in the flow sequence a three-circuit heat exchanger, a condenser for a refrigerant and for melting...
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4004886 |
Two stage continuous process and apparatus for crystallization
A two stage continuous process and apparatus for crystallization of a solute or solvent from a solution comprising, first, passing the solution through a precrystallization zone with simultaneous...
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3987641 |
Freeze concentration recovery process for wood pulping
Pulping liquor borne solids are concentrated within an aqueous solution by a successive plurality of freezing steps wherein a discrete quantity of the solution is crystallized in each step by...
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3902855 |
Multi-stage countercurrent recrystallizer column having slip valve between each stage
Acrylamide which is essentially free of crosslinking impurities is obtained by multiple recrystallizations from water solution wherein the mother liquor from each recrystallization is used as the...
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3900955 |
Apparatus for recovering sulfuric acid and ferrous sulfate crystals from spent pickle solution
Method and apparatus for recovering sulfuric acid and ferrous sulfate crystals from a spent aqueous sulfuric acid pickling solution. The apparatus includes a treating tank, settling tank, and...
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3796060 |
PROCESS FOR PURIFICATION BY CRYSTALLIZATION
A process and apparatus are disclosed for the purification of multi-component liquid feed material having a crystallizable component employing a centrally-fed purification column substantially free...
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3779030 |
METHOD OF MAKING SODIUM CHLORIDE CONCENTRATE FROM SEA WATER
A continuous method of producing a sodium chloride concentrate from sea water which comprises initially seeding sea water with sodium chloride, cooling this admixture to approximately the eutectic...
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3770386 |
APPARATUS FOR PURIFYING CRYSTALS COMPRISING A STIRRER WITH FINS FORMING A DISCONTINUOUS SPIRAL
A method and apparatus for continuously purifying a crystalline substance containing an impurity having a lower melting point than that of the crystalline substance, comprising continuously...
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3765910 |
METHOD OF REMOVING UNDESIRABLE SOLIDS FROM COFFEE EXTRACT
Coffee extract is freeze concentrated in a crystallizer of the scraped wall type, having low residence time and a maximum delta T, which generates fine ice crystals and is not susceptible to...
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3712075 |
APPARATUS FOR PERFORMING THE IMMISCIBLE REFRIGERANT FREEZE PROCESS FOR PURIFYING WATER
Plant for performing the immiscible refrigerant freeze process for purifying water has a crystallizer section with two sub-sections. The first sub-section forms a refrigerant injection zone in...
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