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| Number | Title | Issue Date |
| 7153929 | Copolymers, devoid of rubber, with low residual monomer content and a method and device for producing the same Rubber-free copolymers of unsaturated monomers selected from the group comprising styrenes and vinyl cyanides are disclosed. The copolymers that contain 65 to 80 wt. %, of styrene and 20 to 35 wt. % of acrylonitrile are characterized in their low content of residual... | 12/26/2006 |
| 6991708 | Continuous vacuum pan A continuous vacuum pan includes a cylindrical housing having a vertical axis, at least one liquid heating pan within the housing, and a vertical tube, floating calandria within the liquid heating pan. The vertical tube floating calandria has a downcomer between its... | 01/31/2006 |
| 6887345 | Process and device for evaporating liquids, for example black liquor from cellulose cooking, which contain solid and dissolved substances The present invention relates to a process and a device for evaporating liquids, for example black liquor from cellulose cooking, which contain solid and dissolved substances which are to be concentrated. The liquid is heated to close to boiling temperature in a hea... | 05/03/2005 |
| 6695951 | Saline/sewage water reclamation system The present water reclamation system includes a series of concentric thin shells. The shells mount within a housing that can be maintained under vacuum or low pressure. The shells rotate at high velocity. Contaminated liquid from outside the housing is in... | 02/24/2004 |
| 6637379 | Accelerated water evaporation system A liquid to gas converter to convert liquids (1) to gas (2) that can include a liquid pressurization element (3), a liquid preheating element (5), and a nozzle (10) to disperse liquids into energy (7) generated by an energy source (8). The gas to liquid c... | 10/28/2003 |
| 6627040 | Device and method for removing volatile components from polymer solutions A device and process for the removal of volatile constituents from polymers is disclosed. The device entails a container having an inlet for a polymer solution, an outlet for the volatile components, an outflow for the polymer from which the volatile comp... | 09/30/2003 |
| 6506281 | Method for isolating polymers from solutions A process of evaporating a viscous polymer solution is described. The process includes: (a) providing a viscous polymer solution including at least 30 wt. % of solvents and monomers; (b) introducing the viscous polymer solution into a heated helix (5), th... | 01/14/2003 |
| 6435270 | Lamina stack for a two-pass evaporator A lamina stack for a two-pass evaporator composed of laminae for converting two media mass streams from a liquid state into a gaseous state, comprises at least two laminae. Structures comprising recesses and raised regions on a first media lamina form a f... | 08/20/2002 |
| 5772843 | Evaporator An evaporator includes a tank covered by a lightweight lid which is easily lifted to avoid high pressure in the event of an explosion. The bottom of the tank includes a flat portion which slopes downwardly toward an outlet in the sidewall of the tank. The... | 06/30/1998 |
| 5575889 | Rotating falling film evaporator Heating elements having internal spaces for a heating medium such as steam are successively submerged and withdrawn from a bath of liquid to be evaporated. Vapor boiling off the outer surfaces of the heating elements can be returned for use as heating med... | 11/19/1996 |
| 5496448 | Evaporation means and method An evaporator, which includes a water chamber for receiving water to be evaporated. A plurality of evaporator tubes which when heated, and when water is on an inner wall of a tube, evaporates at least a portion of that water. A plurality of distributors s... | 03/05/1996 |
| 5415732 | Process and apparatus for concentrating high-viscosity foodstuffs A method and apparatus for concentration of a flowable foodstuff can be accomplished by supplying a flowable foodstuff into a vaporization chamber as split into a plurality of free nappes and causing the free nappes to run a predetermined distance to rele... | 05/16/1995 |
| 5312524 | Distillation system for recovery of industrial process liquids A distillation system for recovery of volatile components of contaminated liquids used in an industrial process includes a tube assembly including outer tubes to which hot bottoms liquids are supplied and inner tubes to which process liquids are supplied ... | 05/17/1994 |
| 5096538 | Vacuum drying method A vacuum drying method wherein a solution of a material to be dried which has been adjusted to 1-50 centipoise, is supplied to a steam-heated long tube, solid-vapor mixture of powdery dry material and vapor produced in the tube is blown out under reduced ... | 03/17/1992 |
| 5037955 | Method for heating a viscous polyethylene solution The invention disclosed herein is a single-pass, horizontal heat exchanger, of the shell and tube type, which is designed for preheating of a viscous material, such as the reactor effluent of a polyethylene solution. The heat exchanger is made in three se... | 08/06/1991 |
| 4872949 | Process for treatment of drilling mud Used drilling muds containing substantial quantities of organic liquids and water-soluble salts are treated to render them environmentally acceptable for disposal purposes, by drying the muds to evaporate all liquids, aqueous and non-aqueous, preferably i... | 10/10/1989 |
| 4804477 | Apparatus and method for processing oil well brine An apparatus and process for the controlled concentration of oil well brine which is adapted to be situated at a well site where oil well brine is produced and which evaporates water from the brine to cause precipitable salt to precipitate out of solution... | 02/14/1989 |
| 4693304 | Submerged rotating heat exchanger-reactor A method and apparatus for transferring heat for the purpose of purifying raw feed liquid, vaporizing heat transfer fluids or containing and regulating biological/chemical reactions. The raw feed liquid is directed into an evaporator module submerged in a... | 09/15/1987 |
| 4613409 | High rate solar still and process A method and apparatus for purifying raw feedwater. The raw feedwater is directed into an evaporator module submerged in a solar pond or other body of heated liquid. The evaporator module includes a rotating housing through which a plurality of spaced apa... | 09/23/1986 |
| 4534828 | Evaporator apparatus An evaporator apparatus (10) and method for converting a contaminated fluid including mostly water and water soluble substances into a vapor and a residue. Apparatus (10) includes a container (11) for retaining the fluid. A heat source (17) is utilized fo... | 08/13/1985 |
| 4430156 | Process for drying pumpable suspensions In a multiphase flow tube for drying pumpable suspensions to form solids having low residual moisture contents, the process uses brief increases in the pressure of the gas stream to prevent blockages.... | 02/07/1984 |
