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Patent Searching and Data


Matches 601 - 650 out of 4,458

Document Document Title
WO/1992/004429A1
A process for separating undesired foreign substances from vegetable, animal and maritime oils and fats. During refining or fractionated crystallisation, an electrostatic field is generated in the oil to be treated by means of at least o...  
WO/1992/000130A1
A method and an apparatus for crystallizing a mineral substance in a fluidized bed of crystals (14) generated by circulating a supersaturated solution of the substance to be crystallized upwards through a fluidized bed reactor distributo...  
WO/1991/013301A1
This invention introduces an absorption vapor pressure enhancement operation. In the process, a mass of solvent vapor is absorbed into an absorbing solution under a first pressure and an equivalent amount of second vapor is produced unde...  
WO/1991/013300A1
A Multiple Phase Transformation Absorption Melting Process (MPTAM Process) comprises a step of subjecting a feed solution to simultaneous vaporization and freezing operation, denoted as multiple phase transformation operation, to thereby...  
WO/1991/006682A1
In the horizontal-throughput sugar-crystallization equipment used in the process of the invention, the individual digester chambers are separated by partition walls whose upper edges extend into the vapour space, and the zones in which c...  
WO/1991/004777A1
A crystal refining apparatus of a vertical type, wherein a plurality of screw vanes are provided, the screw vanes have crystal refining tubes rotating in directions opposite to each other, and contained solid crystalline materials are re...  
WO/1991/001785A1
An evaporator in the form of a vacuum pan has partitions (38) providing a plurality of compartments (42, 46) between an inlet and outlet. The compartments increase in volume from the inlet to the outlet, each compartment having at least ...  
WO/1990/010838A1
A new vacuum freezing separation process entitled ''Vacuum Freezing Ambient Pressure Melting (VFAPM) Process'' and a new apparatus entitled ''Sub-Triple Point Vapor Processing Unit'' for generating and liquefying a sub-triple point vapor...  
WO/1990/003208A1
A method of freezing and separation for concentrating solutions, such as waste waters of the process industry, by means of waste heat of the same process, by freezing the solution in a crystallizer (10) operating at the triple point, by ...  
WO/1990/001978A1
A process and apparatus for superpurifying crystallizable substances to a purity level of 99.999 percent by a multistage freezing procedure comprising a melted crystal receiver stage (24a, 24b, 24c, 24d); a crystallization processor stag...  
WO/1989/011897A1
A method for producing oriented diamond films on a substrate. Diamond seed crystals are suspended in a slurry (1) and applied to the substrate surface (2). Heating (3) the substrate removes the slurry fluid and produces seed crystals who...  
WO/1989/011319A1
The aqueous liquid is conveyed through a pipe (3) by means of a longitudinal conveyor (4) in a continuous process during which it is first chilled in a cooling region (6) until the water turns to ice. The liquid containing the ice crysta...  
WO/1989/011323A1
The invention relates to a process for efficiently recovering crystals from slurry for a long time by feeding a slurry to a rotary vacuum filter, filtering with suction while rotating a cylindrical filtering member, washing and again fil...  
WO/1989/010175A1
The invention is a method with equipments for conducting the soli-liquid-vapor multiple phase transformation steps of vacuum freezing, wet distillative freezing, vacuum crystallization and primary refrigerant eutectic freezing. All proce...  
WO/1989/010520A1
A triggering device (15) for use in combination with a triggerable thermal energy storage medium (13) within a flexible cover (11). Triggering device (15) is a closed turn stiff helical metallic spring and of sufficient length to be forc...  
WO/1989/003364A1
A method of reducing soluble and insoluble impurity levels while increasing the size of water soluble salt crystals which includes an initial step of fine grinding followed by regrowth in a saturated solution of the salt subjected to agi...  
WO/1989/000576A1
Non-hygroscopic, azithromycin (9-deoxo-9a-aza-9a-methyl-9a-homoerythromycin) dihydrate and a process therefor.  
WO/1988/005766A1
This process uses a starting material with a minimum p-xylol content of 99 %. The starting material is introduced in the liquid state into an inert liquid, preferably water, the temperature of which is lower than the melting point of pur...  
WO/1988/004568A1
An apparatus (a) for purifying water by removing polluted clinging water from ice crystals, or (b) if desired, for concentrating fruit juices or the like. The complete apparatus includes a source (7 or 15) of small, individual pieces of ...  
WO/1988/001192A1
A method and apparatus for concentrating multicomponent liquid product containing volatile and non-volatile constituents, comprising mixing liquid product with liquid refrigerant gas (21) in a freezing chamber (3), removing ice crystals ...  
WO/1987/005095A1
A trigger (20) to activate a supercoolable aqueous salt solution (22) wherein the trigger and solution are encased within a flexible container (24). The trigger is a flexible relatively thin sheet of material wherein there are a pluralit...  
WO/1987/004778A1
The primary refrigerant eutectic freezing (PREUF) process is designed to separate mixtures containing at least one volatile component and two or more crystal-forming components (1). Heat is removed from a eutectic mixture at near its eut...  
WO/1987/001605A1
This invention, which can be industrially practiced, relates to a high-pressure crystallizer, which enables a pressure crystallization method using a pressure as a variable, and which is used to promote the industrial practicing of this ...  
WO/1986/006977A1
A process and device for multiple-phase processing of an aqueous liquid, in which a pre-cooled (151) aqueous liquid (38') is converted into frazil ice under triple point conditions, by injection into a condensation chamber (1) with a par...  
WO/1986/000025A1
A method of removing materials in solid form from solution in a solvent comprising the steps of collecting the solution in a deposition vessel, injecting directly into the solution in the vessel a liquid refrigerant material whereby the ...  
WO/1985/005284A1
Distillative freezing process is an energy conserving process for separating mixtures and superpurifying chemicals. The wet and dry distallative freezing process disclosed represents a major improvement to the distillative freezing techn...  
WO/1985/004819A1
Free excess charge which is net unipolar is introduced, preferably by charge injection, into the continuous phase. The charge transfers, through the continuous phase, to the dispersed phase and an induced electric field is thereby set up...  
WO/1985/004818A1
Particles/droplets/bubbles forming a dispersion in a continuous fluid can be increased in size by conglomeration induced by introducing free excess charge which is net unipolar (for example, by charge injection) into a body of the disper...  
WO/1985/002783A1
An improved method and apparatus for filtration includes an outer stationary body (10), an inner rotating body (12) defining a gap with the outer body for receiving a fluid sample (14), the surface of one of the bodies defining the gap b...  
WO/1985/002781A1
A process of washing a crystal-mother liquor mixture to produce a mass of purified crystals in a purification zone containing two sets of sub-zones, respectively denoted as Type A sub-zones and Type B sub-zones, that are laid sequentiall...  
WO/1984/001568A1
Process for obtaining aluminium trihydroxide, of mean diameter adjusted on demand in the interval from 2 to 100 microns, of unimodal distribution and of low dispersion, comprising the hot decomposition of an supersaturated solution of so...  
WO/1984/001569A1
Process for obtaining aluminium trihydroxide having a mean diameter controlled on demand, lower than 4 microns, of unimodal distribution and low dispersion, comprising the hot decomposition of a sodium aluminate supersaturated solution i...  
WO/1984/000117A1
An apparatus for concentrating a suspension consisting of a hollow cylinder (1) in which one or more tubes (2) of a constant outward diameter extend in axial direction, in the wall of each tube at least one filter (3) being mounted formi...  
WO/1984/000118A1
A method and apparatus for treating in counter current of suspended particles with a liquid, whereby the particles and the liquid are tranferred in opposite directions through a contact zone (1) which, at some places, spaced in axial dir...  
WO/1983/001010A1
An apparatus for and method of preparing a slurry for a purification apparatus such as a wash column. A slurry is produced in a crystallizer. The crystals are essentially removed from the concentrated mixture and transported to a more di...  
WO/1983/001011A1
A liquid purification system which removes impurities from liquids, such as salt from water. The system as depicted, for example, in Fig. 2, includes operationally interconnected vaporization means (22), condensing means (23) and heat ex...  
WO/1982/000417A1
An activator for initiating crystallisation of a supercooled salt solution comprises a thin trigger (14) of sheet metal having two configurations between which it is bendable with snap-displacement. The trigger (14) has multiple pin-hole...  
WO/1982/000459A1
The purification method of polluted water by dissolved materials which are separable through crystallization, consists in circulating the solution in a heat exchanger where the vaporization temperature is reached, in feeding the solution...  
WO/1981/003016A1
The essential feature of the process according to the invention lies in that solid crystalline matters, respectively precipitates are gained from the solution by means of chemical reactions, in such a manner, that at least one of the com...  
WO/1979/001052A1
A method for preventing fouling in apparatus used to separate a solvent from a solute which includes a semi-permeable membrane barrier is disclosed. The method comprises providing a quantity of nucleation crystals in the fluid stream pas...  
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Matches 601 - 650 out of 4,458