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| Number | Title | Issue Date |
| 7001575 | Device for feeding educts to parallel spaces A device feeds educts to parallel spaces separated from one another by way of a distributor unit. Outlets of the distributor unit are assigned to the spaces, and evaporator structures for the evaporation of liquid media are provided in the spaces. Each outlet of the... | 02/21/2006 |
| 6635150 | Method for distilling a fluid with horizontal vapor transfer into a condensation zone and modular device for implementing said method A method for distilling a fluid which is useful, for instance, in eliminating salt from brackish and/or sea water includes percolating films on plates with multiple effects having several evaporating zones and condensation zones. The evaporation zones (EV... | 10/21/2003 |
| 6132555 | Method and arrangement for increasing evaporation capacity of a multi-stage evaporator of spent liquor in a pulp mill A method and arrangement for increasing evaporation capacity in a multi-stage evaporation plant of spent liquor of a pulp mill. The method includes increasing the pressure of vapor discharged from an evaporation stage by a separate booster, and supplying ... | 10/17/2000 |
| 5944950 | Process for the final evaporation of black liquor The process for the final evaporation has at least two evaporation appliances. These appliances are coupled in series with respect to the black liquor and in parallel with the live steam (primary steam), which drives the evaporation, and with the secondar... | 08/31/1999 |
| 5849148 | Distributor plate and evaporator An evaporator system including a plurality of effects arranged in series for progressively concentrating a liquid, the effects each including: a header chamber for receiving liquid to be concentrated; a multiplicity of tubes adapted to provide evaporation... | 12/15/1998 |
| 5409576 | Rotating evaporator device for the distillation or concentration of liquids A rotating evaporator device is disclosed for the distillation or concentration of liquids. The rotating evaporator device of the present invention utilizes a multiplicity of pairs of disks wherein each disk pair forms a cavity within which heating vapor ... | 04/25/1995 |
| 5256251 | Process for drying and solvent-extraction of solids and sludges A continuous evaporation process for drying water-wet waste solids and sludges, using a paraffin oil solvent, until the waste is dried to a near-zero wastewater product, without experiencing sticky solids. The invention involves (1) mixing the input solid... | 10/26/1993 |
| 4981555 | Process and apparatus for concentrating a solution The solutions are concentrated by multiple-effect evaporation in indirectly heated evaporators. The highest concentration of the solution is reached in a final evaporator stage, which is heated with live steam. The final evaporators stage includes two to ... | 01/01/1991 |
| 4917771 | Distilling apparatus A column construction or boiling space in a distilling apparatus, having a pure vapor input connector, an input connector for water to be distilled, numerous heat exchange tubes within the column construction, a pure vapor removal connector, a condensate ... | 04/17/1990 |
| 4434027 | Method for the evaporation of a liquid solution using mechanical compression A liquid solution is passed through a multi-stage evaporation plant while using recirculated vapor, fed through a mechanical compressor in order to increase the pressure and temperature of the vapor. The plant comprises a number of evaporators connected in ser... | 02/28/1984 |
| 4364794 | Liquid concentration apparatus An evaporator for increasing the solids content of a liquid-solids mixture employs vapor compressor means to recycle superheated vapors that are boiled off the mixture by a heat transfer fluid. The superheated vapors are forced into the mixture before the... | 12/21/1982 |
| 4334965 | Process for recovery of olefinic nitriles A multi-stage evaporator is used to remove water from the extracted distillation or stripper tower bottoms recycled as quench liquid to the quench tower of an acrylonitrile purification and recovery system. This results in a significant decrease in the am... | 06/15/1982 |
| 4251324 | Installation for purification of a liquid compound Multi-stage purification installation offering a great flexibility in the treatment of the residues produced and involving a relatively low energy consumption. Each stage comprises two heat exchangers connected in series and is fed independently with the ... | 02/17/1981 |
| 4230529 | Distillation apparatus Distillation apparatus in which a group of heat-transfer tubes are each driven to wobble about a vertical axis which passes through a wobbling center. A stream of fluid is directed to flow down inside each tube. The fluid stream tends to cling to the inne... | 10/28/1980 |
| 4160812 | Multi-stage crystallization of sodium carbonate Sodium carbonate is crystallized in multi-stage evaporative crystallizers from a pregnant liquor process solution typically obtained by dissolving calcined crude trona in water, separating insoluble impurities, and removing the majority of organic matter ... | 07/10/1979 |
| 4056364 | Two stage continuous crystallization apparatus with controls A crystallizable solute is crystallized from a solution containing the same by introducing a solution of said solute into a first stage evaporative-crystallization zone together with seed solute crystals. Within the first stage evaporative-crystallization... | 11/01/1977 |
| 4014735 | Concentration and separation of corrosive liquid mixtures In the processing of a corrosive liquid mixture, such as 50 to 80% aqueous sulfuric acid, by its passage over one surface of a wall of inert heat resistant material, and heating the other surface of said wall, thereby to evaporate from said corrosive liqu... | 03/29/1977 |
| 3993535 | Multiple effect evaporation process There is disclosed a multiple-effect evaporation system wherein the last effect of the system in the direction of miscella flow is provided with a stripping tower in which vapor effluent from that effect countercurrently contacts feed to that effect. In a... | 11/23/1976 |
| 3966562 | Multi-stage flash distillation plant A multi-stage distillation plant consisting essentially of a multi-flash evaporator provided with a multi-flash chamber which is divided into a heat recovery section and a heat rejection section. In this multi-stage flash distillation plant, the aforesaid... | 06/29/1976 |
| 3930958 | Desalination apparatus Desalination apparatus with the double feature of condensation and evaporation, comprising plural dish-like condensing elements piled coaxially, wherein a sloped bottom diaphragm is provided in each element, at the lower part of each of which an upwardly ... | 01/06/1976 |
