Famous Patents
In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7251944 | Vapor-compression evaporation system and method According to one embodiment of the invention, a vapor-compression evaporation system includes a plurality of vessels in series each containing a feed having a nonvolatile component. A first set of the plurality of vessels includes vapor-compression evaporators and a... | 08/07/2007 |
| 7235183 | Glycerine foots salt separation system The present invention provides a method and apparatus for the recovery of salt from a glycerine process, allowing the salt to be used in a brine solution. A salt settling tank is positioned inline between the foots from a crude still bottom and a foot still. Salt se... | 06/26/2007 |
| 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 |
| 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 |
| 5174865 | Process for purifying crude hydrochloric acid Aqueous hydrochloric acid of very high purity can be obtained in a process for purifying crude aqueous 5 to 20 wt. % hydrochloric acid. In the purification, process water or a water/HCl mixture is evaporated from the crude aqueous hydrochloric acid at a p... | 12/29/1992 |
| 4953538 | Piggy back evaporating for maple syrup evaporator apparatus or the like A piggy back evaporator includes a drip pan having an oblique condensate drain sheet extending over the major length of the same. A steam hole within the condensate drain sheet allows steam to reach the lower surface of a bottom wall of a piggy back pan. ... | 09/04/1990 |
| 4953607 | Multistage evaporating system A thermal system includes a plurality of heat exchangers in series and the same number of flash tanks in series is interposed between two subsequent effects of a multiple effect evaporating system for sulfate black liquor. The liquor is indirectly heated ... | 09/04/1990 |
| 4944839 | Interstage liquor heater for plate type falling film evaporators A falling film evaporator in which some plate elements have their upper portions surrounded by a hood to prevent feed liquor from contacting hot vapor generated in the evaporator and exchanging heat therewith by direct contact. Other elements are located ... | 07/31/1990 |
| 4819615 | Piggy back evaporator for maple syrup evaporator apparatus or the like A piggy back evaporator is sealably coupled in open box form overlying a sugar maple sap evaporator and aligned with an upright flue pan of the conventional sugar maple sap evaporator which, when fired, boils off vaporizable constituents of the sap. The p... | 04/11/1989 |
| 4755258 | Method and apparatus for deactivating spent liquor Calcium containing sulphate spent liquor is deactivated by means of heating. Spent liquor is heated by means of direct condensing in a flash-steam-system. Liquor vapors generated during expansion of the already deactivated spent liquor are used for heatin... | 07/05/1988 |
| 4673459 | Radial configuration of evaporator heating elements and method A free flow evaporator of the falling film type has the heating elements disposed in a circular configuration so that each extends radially a distance less than the interior radius of the evaporator cylindrical vessel. Heating vapor is introduced concentr... | 06/16/1987 |
| 4662990 | Apparatus for recovering dry solids from aqueous solids mixtures A continuous process and apparatus for drying aqueous solids by evaporation using a fluidizing oil and a surfactant wherein the fluidizing oil and surfactant are recovered and recycled separately or together. The aqueous solids may, or may not, have a hea... | 05/05/1987 |
| 4586985 | Multi-effect rotary distillation apparatus In a thermally driven multi-effect distillation process and apparatus liquid is introduced into a plurality of evaporating and condensing stages or chambers while heat energy is passed through the stages or chambers in a direction countercurrent to the di... | 05/06/1986 |
| 4451334 | Multi-effect rotary distillation process A thermally driven multi-effect distillation process and apparatus are disclosed in which liquid is introduced into a plurality of evaporating and condensing stages or chambers while heat energy is passed through the stages or chambers in a direction coun... | 05/29/1984 |
| 4379734 | Multistage evaporator A multistage evaporator plant having combined vapor compressor and heat pump for recovery of the heat contained in the vapors. The evaporator section comprises several stages and a heat input, a condensate output and a vapor output. The vapor compressor c... | 04/12/1983 |
| 4231840 | Method of concentrating an aqueous solution by multiple effect evaporating Disclosed is an improved method of concentrating an aqueous solution containing a first salt and a second salt, the solubility of the first salt increasing more with increasing temperature than the solubility of the second salt, by multiple effect evapora... | 11/04/1980 |
| 4210421 | Method for reducing kcl tailings loss from evaporation Disclosed is an improved method of concentrating with respect to a first salt an aqueous solution containing the first salt and a second salt, the solubility of the first salt increasing more with increasing temperatures than the solubility of the second ... | 07/01/1980 |
| 4152196 | Stripping column The column employs a head section with a counterflow column, a bottom section with a counterflow column and a plurality of reaction stages for stripping metal salts via steam from ammoniacal solutions or suspensions. Each reaction stage has a floor, a pip... | 05/01/1979 |
| 4145245 | Double-effect evaporator A double-effect evaporator comprises a first and a second effects and an external steam ejector, each of the effects having feed-liquid spray means, a bundle of heat-transfer tubes below the spray means and extending between headers, and a concentrated li... | 03/20/1979 |
| 4132588 | Concentration process by multistage, multiple effect evaporator A method and apparatus in which the effects in multiple effect evaporation systems are separated into successive stages and the vapors in the stages of one effect are utilized as a heat source for the liquid in stages of a subsequent effect.... | 01/02/1979 |
| 3959067 | Concentration of volatiles-bearing products In the process for the concentration of volatiles-bearing products by a low-temperature, short-time, multi-effect evaporation method, a forward feed of the product and vapor occurs so that at least from a given stage of evaporation, each subsequent stage ... | 05/25/1976 |
| 3950230 | Process and apparatus for recovering residual oil from solids dehydrated in an oil medium and grossly deoiled Process and apparatus for recovering residual oil from solids previously substantially dehydrated by a process wherein a slurry of water-wet solids in oil is subjected to a heat evaporation step to substantially remove the water. The oil is then largely e... | 04/13/1976 |
