Quotables
"The radio craze will die out in time."
Thomas Edison ; 1922
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 |
| 7294225 | Process for production of synthesis gas in combination with the maintenance of the energy balance for a pulp mill A process (44) for the production of pulp and paper (28), recycling of cooking chemicals (3, 29), combustion of biomass (30, 37) and generation of heat and electric energy (27, 40) comprising a pulp and paper mill (28), in t... | 11/13/2007 |
| 7186316 | Method for preparing pulp from cornstalk Disclosed is a method for preparing paper pulp from cornstalks comprising the steps of cooking, washing, screening, thickening, bleaching, beating and drying performed under moderate conditions which have little noxious effects on the environment. By using cornstalk... | 03/06/2007 |
| 7124466 | Particle capture system A particle capture system includes a container sized to receive a structural disc drive component. A fixture is able to maintain the disc drive component within a spray zone in the container, and a first nozzle in the container is connected to a fluid source and is ... | 10/24/2006 |
| 6926118 | Anchor for personal fall arrest equipment An anchor for positioning in an opening of a surface includes a first generally flat portion having a slot formed therein, the slot having a longitudinal centerline; a second generally flat portion having a slot formed therein, the slot having a longitudinal centerl... | 08/09/2005 |
| 6876300 | Electronic intelligent turn signal control system An intelligent turn signal control system for turning on and off left and right turn signals in a vehicle includes a computer, such as an antilock braking system computer, with programmed software operably disposed on a vehicle, a driver interface switch assembly as... | 04/05/2005 |
| 6821382 | Method and arrangement for cleaning contaminated condensate including a combined stripper/condenser A method and apparatus for cleaning condensate, produced during the production of cellulose pulp, including evaporation of spent liquor, utilizing a cleaning plant having several condensers, coupled in series. Process steam from the last evaporation stage and unclea... | 11/23/2004 |
| 6348129 | Treatment of pulp mill condensate with ozone An aqueous stream such as pulp mill condensate containing one or more sulfur compounds is treated by (a) reacting an aqueous feed stream containing TRS contaminant selected from the group consisting of hydrogen sulfide, methyl mercaptan, dimethyl sulfide,... | 02/19/2002 |
| 5820830 | Waste recovery and utilization in the kraft recovery process An integrated flue gas treatment and condensing heat exchanger is used to scrub sulfur dioxide from the flue gas produced by a power boiler used in a paper mill operating a kraft process. Sensible and latent heat from the flue gas is recovered and the con... | 10/13/1998 |
| 5759345 | Process for treating sulphur-containing spent liquor using multi-stage carbonization To recover the sodium-sulphur compounds following sodium-based pulp processing, e.g. the ASAM process or basic or acidic sodium sulphite processes, the waste liquor is burnt in a lye burning vat (1) with liquid slag extraction and the exhaust gases are su... | 06/02/1998 |
| 5730877 | Method for fractionating a solution The invention relates to a method for fractionating a solution by a chromatographic simulated moving bed method in which the liquid flow is effected in a system comprising at least two sectional beds in different ionic forms. The fractions enriched with d... | 03/24/1998 |
| 5701829 | Apparatus for recovering heat in a spent liquor recovery boiler An apparatus for use in the pulp industry for recovering heat in the spent liquor recovery boiler, whereby the boiler walls are formed of water-cooled tubes connected to the water/steam circulation system of the boiler. Supply of air into the lower sectio... | 12/30/1997 |
| 5637225 | Method for fractionating sulphite cooking liquor The invention relates to a method for the fractionation of sulphite cooking liquor by a chromatographic simulated moving bed system in which the liquid flow is effected in a system comprising at least two chromatographic sectional packing material beds. I... | 06/10/1997 |
| 5635027 | Method of reducing the viscosity of a black liquor A method of recycling sodium-based salts used for digesting wood in a digester during the manufacture of pulp and paper. The method comprises collecting a black liquor from the digester, concentrating the black liquor, and adding a salt to the black liquo... | 06/03/1997 |
| 5320757 | Method of inhibiting calcium oxalate scale deposition Hydrolyzed copolymers (A) maleic anhydride with (B) at least one more ethylenically unsaturated monomer other than acrylic acid or methacrylic acid or with a mixture of (B) and (C) acrylic acid or methacrylic acid are employed in a process to inhibit calc... | 06/14/1994 |
| 5096540 | Method for recycling sulfur dioxide from sulfite pulping liquors Combined acidification and evaporative concentration of sulfite based chemical and sulfite based semichemical spent liquors expel massive amounts of gaseous sulfur dioxide and water vapor from the spent liquor. The concentration of the expelled sulfur dioxide ... | 03/17/1992 |
| 4971657 | Combined process for thermally and chemically treating lignocellulose-containing biomass and for producing furfural and cellulose-containing fiber masses A process for the thermal and chemical treatment of lignocellulose-containing biomass and for the production of furfural and cellulose-containing fiber masses. In order to ensure a high yield of furfural: lignocellulose-containing biomass is continuously ... | 11/20/1990 |
| 4941946 | Process for decreasing the tendency to form deposits in plants for evaporating spent sulfite liquors A process for decreasing the tendency to form deposits in plants for evaporating spent sulfite liquors used to produce woodpulp. In the process, the liquors are treated with polyacrylic acids having a low molecular weight. In order to prevent virtually an... | 07/17/1990 |
| 4891097 | Method for regulating, the feeding-in or combustion conditions of concentrated spent liquors The invention relates to a method of regulating, for the purpose of burning soda-ash in a recovery boiler furnace, the feeding-in or combustion conditions of concentrated spent liquors of varying chemical and physical properties by measuring some physical... | 01/02/1990 |
| 4767500 | Sulfite cooking method for the production of cellulose from materials containing lignocellulose with recovery of the cooking chemicals A sulphite cooking process is described for the production of pulp from materials containing lignocelluloses, with recovery of the cooking chemicals, in which the cooking, the blowing, the washing and the bleaching are performed sucessively. The waste liq... | 08/30/1988 |
| 4670098 | Process for preparing cellulose pulp from lignocellulosic material while removing high molecular weight substances from the pulping liquor A process is provided for preparing cellulose pulp by delignification of lignocellulosic material, which comprises subjecting particulate lignocellulosic material in a pulping zone to the pulping action of a pulping liquor at a temperature at which pulpin... | 06/02/1987 |
| 4631129 | Production of pure sugars and lignosulfonates from sulfite spent liquor Sulfite spent liquor is subjected to a two-step chromatographic separation to form substantially purified fractions of sugars and lignosulfonates. The process for the separation of sugars and lignosulfonates comprises the steps of (a) introducing sulfite ... | 12/23/1986 |
| 4601262 | Energy balance process for the pulp and paper industry The process described is a novel use of two complementary processes, the first of which provides the product to be converted into energy by the second process, related in such a way that the two combined provides an alternative to conventional fuels at a ... | 07/22/1986 |
| 4533433 | Method of covering the chemical losses in pulp production A method for keeping the heating surfaces in the final thickener (VI), which is divided into several sections (A,B,C), clean in evaporating waste liquors in pulping processes for recovering the cooking chemicals. Chemical solutions e.g. residual products ... | 08/06/1985 |
| 4522685 | Method of operating a spent pulping liquor combustion apparatus Operation of a multiple solids fluidized-bed black liquor combustor employing only combustion residue solids as both fine and coarse bed solids is disclosed. Under normal operating conditions, a solids distribution of fine particle sizes and coarse partic... | 06/11/1985 |
| 4508593 | Process for recovery of sulfur dioxide liberated in the chemical pulping of lignocellulosic material A process is provided for the recovery of sulfur dioxide liberated in the chemical pulping of lignocellulosic material, which comprises (1) collecting sulfur dioxide-containing gas emitted during the pulping and separating it into at least two portions; (2) co... | 04/02/1985 |
| 4486394 | Alkali regeneration process The invention relates to an improvement in a method of regenerating alkaline or alkaline earth metal oxides or hydroxides from solution particularly in delignification processes wherein a suitable transition metal such as ferric oxide is burnt with the so... | 12/04/1984 |
| 4481074 | Process for the preparation of a sodium sulphite containing liquor The method relates to a process in the preparation of the cooking liquor for sodium sulphite pulp for carrying out a reaction between sodium bisulphite and sodium bicarbonate and/or sodium carbonate by bringing solutions containing said compounds into con... | 11/06/1984 |
| 4456750 | Method for controlling the alkalinity of feed circulation when prehydrolyzing wood chips A method for controlling the pH of the liquid circulation in a continuous prehydrolysis apparatus where a mineral acid or some other acid stronger than sulfurous acid is used as a hydrolysis agent and the material to be hydrolyzed is transferred, entraine... | 06/26/1984 |
| 4431617 | Methods for removing malodorous sulfur compounds from pulp mill flue gases and the like by using green liquor An improved method for removing malodorous sulfur compounds from flue gases generated in kraft or sodium sulfite pulping operations and the like by the absorption process using green liquor, an aqueous solution containing sodium sulfide and sodium carbona... | 02/14/1984 |
| 4414060 | Method for sulfite pulping using water-soluble molybdenum containing compounds A process for sulfite pulping of wood of the type which comprises sulfite pulping wood chips in the presence of a catalytic amount of a water-soluble molybdenum containing compound, the improvement which comprises using as the source of water-soluble moly... | 11/08/1983 |
| 4347102 | Elimination of potassium compounds from sodium-based pulped cycles The potassium compounds in heavy black liquor flowing in the recovery cycle are reduced by the introduction of magnesium nesosilicate to form magnesium potassium silicate which is voided from the system by filtration.... | 08/31/1982 |
| 4336102 | Method for recovery and reuse of ammonia in ammonia-base sulfite cooking liquors A method for recovering ammonia from spent ammonia-base sulfite pulping liquor includes steam stripping spent ammonia and condensing the resulting vapor to produce a dilute ammonia or ammonium hydroxide solution. This dilute solution is passed through a c... | 06/22/1982 |
| 4334956 | Method of reutilizing kraft spent liquor A method of utilizing kraft black liquor by converting the black liquor to "green liquor" and then oxidizing the green liquor with air in the presence of a quinone compound or spent liquor from the kraft process, the soda semi-chemical process or the neut... | 06/15/1982 |
| 4303469 | Process and apparatus for recovery of spent pulping liquors An integrated system, process and apparatus are provided for the efficient and effective recovery of spent pulping liquors, particularly kraft black liquor, whereby in an initial stage concentrated spent liquor is subjected to combustion in a reactor equi... | 12/01/1981 |
| 4253911 | Process for maintaining a low sodium chloride content in recycled sodium chemicals of sodium-based pulp manufacturing processes A process is provided for the separation of sodium chloride in the sodium chemicals recovery stage of sodium-based pulp manufacturing processes so as to maintain a low sodium chloride content in the recycled sodium chemicals, comprising the steps of treat... | 03/03/1981 |
| 4244779 | Method of treating spent pulping liquor in a fluidized bed reactor A method of treating materials in a fluidized bed reactor, wherein the material to be treated is brought into contact with hot particles removed from the flue gases coming from the fluidized bed reactor to bring about chemical and/or thermal reactions in ... | 01/13/1981 |
| 4241041 | Methods for the recovery of sulfur components from flue gas and recycle sodium sulfite by reduction-smelting and carbonating to strip hydrogen sulfide An improved method for recovering sulfur from flue gas which contains sulfur dioxide formed from burning sulfur containing fuels. The method first involves the reduction burning of auxilary fuel in the presence of sodium sulfite to convert it to smelt con... | 12/23/1980 |
| 4227966 | Method for combusting a mixture of spent magnesium sulphite digestion liquor and alkaline oxygen bleach liquor A method for oxygen delignifying magnesium sulfite pulp is disclosed. More particularly, a method is disclosed by which the spent liquors from digestion of magnesium sulfite pulp and from alkaline oxygen bleaching of the pulp can be combined and combusted... | 10/14/1980 |
| 4212702 | Process for recovery of chemicals from pulping waste liquor A process for recovery of chemicals from a sodium sulfite pulping waste liquor is disclosed in which a smelt obtained from the waste liquor is introduced into an aqueous slurry containing solidified smelt while make up water and a weak aqueous slurry are ... | 07/15/1980 |
| 4155804 | Removal of volatile organic components from spent sulfite effluent Volatile organic components are removed from the effluent liquor of an acid sulfite digestion process by concentrating the effluent liquor in multiple stages to form an organic-rich aqueous fraction, an organic-lean aqueous fraction and a high solids cont... | 05/22/1979 |
