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Matches 651 - 700 out of 4,627

Document Document Title
WO/1999/001380A1
The characteristic feature of the invention is that the whole quantity of the saline solution is separated by evaporation into a low saline containing liquid (4-100 mg/l of saline content) with at least a fresh water quality and into a c...  
WO/1998/058722A1
A process for the precipitation of a solute from a Dense Fluid Solvent in which a solution of the solute in a Dense Fluid Solvent is expanded under conditions such that the Dense Fluid Solvent passes from the Dense Fluid Solvent region o...  
WO/1998/056480A1
A freeze-concentrating apparatus for cooling an aqueous solution with a cooling cylinder (22) serving as a heat exchanger for cooling and continuously producing a suspension containing particles of ice crystals. The liquid component is s...  
WO/1998/039076A1
There is described a method for the treatment and processing of solutions of an organic fluid, water and one or more compounds of alkaline earth metals, alkali metals and metal ions, comprising the following steps: a) conducting a stream...  
WO/1998/037938A1
A crystallization apparatus comprising a crystallization tank (52), seed crystal feed means (70, 72) for feeding a seed crystal of a crystallization material to the crystallization tank, feed solution feed means (82, 84, 78) for feeding ...  
WO/1998/033782A1
The instant invention describes a method for crystallizing (-)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihy dro-2H-3,1-benzoxazin-2-one from a solvent and anti-solvent solvent system and producing the crystalline product. The...  
WO/1998/027240A1
In order to separate metals and/or metal alloys of different melting points from one another, a mixture of these metals and/or metal alloys is brought to a temperature at which the metal or the metal alloy of relatively low melting point...  
WO/1998/025889A1
The invention concerns a method of separating a crystallizable organic compound from a liquid compound mixture by means of a single- or multi-stage suspension crystallization method, the crystals behind the final stage being separated by...  
WO/1998/025680A1
The invention concerns a method of separating organic compounds by single- or multi-stage suspension crystallization, each stage consisting of a crystallizer, optionally a crystallizer vessel, and a filter (7) for separating the liquid p...  
WO/1998/023350A1
A process for preparing a crystal suspension of an organic compound which has a $g(D)H/RT value greater than 10, the process comprising dispersing a melt of the organic compound in a liquid dispersion medium to form an emulsion, cooling ...  
WO/1998/019966A1
Disclosed is a method of separating NaCl from a NaCl contaminated aqueous LiCl solution involving concentration of the solution, cooling of concentrated solution and separation of the crystallized NaCl. The method is characterized in tha...  
WO/1998/014420A1
Crystals of crude benzoic acid whose volume density is not less than 0.2 g/cm?3� and whose average particle diameter is not less than 0.3 mm are put from above into a continuous crystallizer having a stirrer and a heating means and the...  
WO/1998/013133A1
A method of producing a granulated product having a soft texture comprises obtaining a substance in liquid form, the substance being solid at a given temperature, atomising the liquid substance, rapidly cooling the atomised liquid so tha...  
WO/1998/006667A1
Methods are disclosed in which first and second reactant salts, and, optionally, a complexing agent are added to a non-aqueous reaction solvent to form a reaction system. The reactant salts, which are substantially soluble and reactive w...  
WO/1998/006668A1
Methods are disclosed in which first and second reactant salts and a complexing agent are added to a non-aqueous reaction solvent in which the complexing agent is soluble. The complexing agent is a crown ether or other cyclic or acyclic ...  
WO/1998/003241A1
An installation for purifying particulate solids, especially a salt purification facility, comprises a vertically standing purification vessel (1) which has on top a fill aperture (10) for the solids to be purified, below an outlet apert...  
WO/1998/001204A1
The invention concerns a continuously operated, two-part crystallizer which is particularly suitable for the cleavage of racemic mixtures. The invention also concerns a process using said crystallizer for separating solids mixtures which...  
WO/1997/046526A1
Donepezil hydrochloride, 1-benzyl-4-[(5,6-dimethoxy-1-indanon)-2-yl]methylpiperidine hydrochloride, is provided here in the form of four polymorphs which are stable against heat and humidity in the pharmaceutical use. They can be industr...  
WO/1997/041271A1
A method of producing sodium carbonate crystals (34) from a sodium carbonate-containing solution (14) including the steps of passing the sodium carbonate solution (14) to a precipitator (12), adding methanol (16) to the sodium carbonate ...  
WO/1997/032644A1
A process is described for separating a desired substance from an aggregate mixture in which process a three-phase dispersion is formed, the first phase comprising droplets containing the aggregate mixture, the second phase comprising a ...  
WO/1997/024303A1
A method for efficiently purifying a particular substance contained in a raw material mixture, comprising the steps of: (1) subjecting the raw material mixture in a liquid form or a slurry form wherein part of the particular substance ha...  
WO/1997/024302A1
A method for purifying a particular substance contained in a mixture, comprising the following steps (1) and (2a) or (2b) and permitting a particular substance having high purity to be relatively simply recovered in a high yield from a m...  
WO/1997/018879A1
A process for supercooling a liquid or solid wherein the solid or liquid is placed in contact with a coolant, the coolant having a temperature of at or just above the metastable limit temperature of the liquid or solid.  
WO/1997/014777A1
A method for crystallising fat to enable later fractionation, in particular by pressure filtering, wherein the fat is melted, the molten mass is divided into beads, the beads are fed into a pre-refrigerated aqueous solution, the fat conc...  
WO/1997/007121A1
Processes for the depletion of 7-ADCA in mixtures of vinyl-ACA with 7-ADCA via novel salts of vinyl-ACA or via chromatography.  
WO/1996/032095A1
A process for producing a pharmaceutical powder for inhalation comprising crystalline particles of an inhalation compound, comprising dissolving an inhalation compound in a solvent; and introducing the solution containing the inhalation ...  
WO/1996/026781A1
A method of controlling the crystallization of biopolymers such as proteins, which comprises bringing into contact with a biopolymer-containing buffer solution (14) a silicon crystal (15) with the valence electrons thereof so controlled ...  
WO/1996/027028A1
The invention relates to a method for the recovery of xylose from xylose-containing aqueous solutions containing 30-60 % by weight of xylose on dissolved solids, in which method the solution is treated to produce a solution supersaturate...  
WO/1996/027029A1
The invention relates to a method for recovering a crystallisable organic compound from solutions containing said compound. In accordance with the method, the compound is crystallized substantially by way of nucleation from a solution ha...  
WO/1996/022262A1
A method for producing para-xylene from a xylene-containing feedstock, wherein a first fraction is enriched to at least 30 wt.% with para-xylene, and said fraction is purified by means of at least one high-temperature crystallisation ste...  
WO/1996/020908A1
Process for producing very pure paraxylene from a charge containing a mixture of aromatic hydrocarbons having from 7 to 9 carbon atoms, wherein is circulated at least a portion of the charge in a zone adapted to enrich a first fraction w...  
WO/1996/020907A1
Method for the separation of high purity paraxylene from a charge containing xylene isomers comprising the steps of selective adsorption (8) of a paraxylene-rich fraction, at least one stage for crystallizing (5a) said fraction at a high...  
WO/1996/019421A1
In a chemicals crystallisation process, chemicals are at first molten then introduced into a container where they crystallise by heat extraction, are conveyed through the container and collected as a product. The process is characterised...  
WO/1996/018597A1
Crystallization of adipic acid using low intensity ultrasonic agitation during crystallization results in purer product that is more readily handled. Apparatus for carrying out the process is also disclosed.  
WO/1996/014449A1
A surface-cooled fluid bed crystallizer apparatus (10) and method are disclosed wherein submerged heat exchanger surfaces (typically heat exchanger tubes (14) or plates through which a coolant is passed) are bathed with a stream of gas b...  
WO/1996/013316A1
The invention relates to a process and apparatus for the preparation of open macropore crystals from solution by using a desalting in gas form, wherein the transformation of the desalting agent into gas-form is implemented from a solutio...  
WO/1996/007461A1
The invention concerns the exploitation of the process of initiating and/or accelerating and/or controlling crystallization or precipitation in supercooled melts or supersaturated solutions of solids. A problem frequently encountered wit...  
WO/1996/005279A1
A pseudo-steady state fractionation of a polymorphic fat, resulting in a product which is in a kinetically stable crystal form is performed in a way that a 'sigma'-value is maintained below 0.5, formula (I) wherein Sc being: the percenta...  
WO/1995/035475A1
An orbital rod drive arrangement for an orbital tube whip rod heat exchanger includes a single drive plate (12) driving a plurality of countercranks (18), each countercrank (18) supporting a whip rod (24) from its upper end within a tube...  
WO/1995/032040A1
A method of producing sodium carbonate from trona including the steps of passing a solution containing trona (14) to a precipitator (17), adding alcohol (16) to the solution in the precipitator so as to precipitate carbonate from the sol...  
WO/1995/030466A1
A process and device are disclosed for separating substances by crystallization of molten material. In order to bring about crystallization, the molten material is fed into the gap between two opposing moving walls which can be cooled; t...  
WO/1995/030478A1
Wash columns as used to remove impurities from the residual melt from melt crystallization are of limited efficiency due to the fact that the crystal mass normally fed in contains solids of different sizes, which partially also tend to a...  
WO/1995/026931A1
An installation for the targeted formation of germs or crystals on the surface of a dielectric in contact with a solution, especially on the functional groups of a polymer, in which there is a device for generating an electric field in t...  
WO/1995/026947A1
This invention is a crystallization process for p-xylene recovery. A single temperature crystallization stage (18) is used for producing p-xylene from a feed having an above equilibrium p-xylene concentration, such as from toluene dispro...  
WO/1995/018086A1
A method for recovering crystalline 2-6-dimethylnaphthalene comprising crystallizing in a scraped-wall crystallizer apparatus at crystallization temperature T, a mixture of low melting components (LM), having melting points of 70 �F an...  
WO/1995/013132A1
A method for providing aerogels, and aerogels produced according to the method, is described. As one aspect, antiperspirant compounds that are in aerogel form, and antiperspirant and deodorant compositions including such salts, are descr...  
WO1995004123A3  
WO/1995/004583A1
Methods and reaction systems are disclosed that are adapted for forming crystallites having novel crystal habits and/or morphologies compared to conventional crystallites of the same chemical composition. The methods and reaction systems...  
WO/1995/004123A2
Triglyceride oil crystallisation modifying substance being membrane lipids which are comprised by the groups (I) lipids having the formula C13H27-CH=CH-CH(OH)-CH(NHCOR2)-CH2-OR4, C13H27- is an unbranched alkyl chain, R4 is hydrogen or R3...  
WO/1994/022546A1
A method and a device for recovering crystals from a solution by evaporation with crystallisation in an evaporation plant having at least two stages are disclosed. In the method, the crystallised salt is separated in each evaporation sta...  

Matches 651 - 700 out of 4,627