Patent application number | Description | Published |
20080277083 | METHOD OF MONITORING AND INHIBITING SCALE DEPOSITION IN PULP MILL EVAPORATORS AND CONCENTRATORS - A method of monitoring and inhibiting scale precipitation and deposition from spent liquor in pulp mill evaporators and concentrators is disclosed. The method includes connecting a black liquor deposition monitor to a pulp mill evaporator or concentrator and measuring the thermal conductivity on the outer surface of the monitor. A controller interprets the measured thermal conductivity and determines a level of scale deposition. If the level of scale deposition is above a predetermined level, the controller is operable to introduce a scale-inhibiting composition to the spent liquor. The scale-inhibiting composition may include organic polycarboxylic acids; organic fatty acids; low molecular weight and polymeric aromatic acids; organic acid esters, anhydrides, and amides; low molecular weight and polymeric aliphatic and aromatic sulfonic acids; and low molecular weight and polymeric amines; and any combinations. | 11-13-2008 |
20100006242 | DEINKING A CELLULOSIC SUBSTRATE USING MAGNESIUM SILICATE - A composition and method for deinking is disclosed. The composition and method contain an activated magnesium silicate or a magnesium silicate. | 01-14-2010 |
20100006243 | DEINKING A CELLULOSIC SUBSTRATE USING MAGNESIUM HYDROXIDE - A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide. | 01-14-2010 |
20100006244 | DEINKING A CELLULOSIC SUBSTRATE USING AN INORGANIC MINERAL - A composition and method for deinking is disclosed. The composition and method contain an activated inorganic mineral. | 01-14-2010 |
20100269993 | METHOD AND COMPOSITION FOR IMPROVING FIBER QUALITY AND PROCESS EFFICIENCY IN MECHANICAL PULPING - This invention provides a composition and method for improving a mechanical pulping process by decreasing freeness and amount of shives, providing energy and chemical savings, and enhancing brightness and mechanical strength of a paper product made from a pulp material in the process. The composition includes formulations, such as surfactants, chelants, hydrotropes, reductive and oxidative pulp modifiers, and pH-controlling chemicals. The method includes selectively introducing these formulations to the pulp material in the mechanical pulping process. | 10-28-2010 |
20100300632 | METHOD AND ARRANGEMENT FOR FEEDING CHEMICALS INTO A PULP PROCESS STREAM - An apparatus for feeding one or more chemicals into a process stream of a pulp process is disclosed, as well as a method of utilizing the apparatus for feeding one or more chemicals into a pulp process is disclosed. | 12-02-2010 |
20110008637 | METHOD FOR IMPROVING THE PERFORMANCE OF OPTICAL BRIGHTENING AGENTS - The invention provides a more effective optical brightener composition for coating paper substrates. The invention includes an optical brightening agent (OBA) and a glycerol based polymer. This combination results in a composition that provides a surprisingly large whitening effect and does not degrade the shade of the paper. As a result extremely high degrees of whiteness can be achieved without being frustrated by the greening effect. | 01-13-2011 |
20110151151 | METHOD OF PRODUCING A PRINT MEDIUM - The present invention relates to a method for producing a print medium with enhanced whiteness and print quality. The method comprises applying a surface treatment composition of a general formula C | 06-23-2011 |
20110174455 | COMPOSITIONS AND PROCESSES FOR PAPER PRODUCTION - Oxidative compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The oxidative composition and method maintains and/or enhances brightness, prevents yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the oxidative agents produce a synergistic effect not previously identified in the paper process. | 07-21-2011 |
20110220307 | LIPOHYDROPHILIC GLYCEROL BASED POLYMERS AS DIGESTION AIDS FOR IMPROVING WOOD PULPING PROCESSES - The invention provides a method of improving the digestion of wood chips into pulp. The method involves: adding a liphohydrophilic glycerol-based polymer additive to a solution used in the digestion process. This additive is unexpectedly effective at facilitating digestion. The branched and ether structure of the additive allows it to withstand the harsh nature of a highly alkaline environment. In addition, it is more soluble in high pH than other surfactants. The structure, resistance, and particular balance between hydrophobic and hydrophilic regions, causes the additive to increases the interaction between the wood chips and the digestion chemicals. This in turn reduces the costs, the amount of additive needed, and the amount of reject wood chunks that result from the digestion process. | 09-15-2011 |
20120135906 | DEINKING A CELLULOSIC SUBSTRATE USING MAGNESIUM SILICATE - A composition and method for deinking is disclosed. The composition and method contain an activated magnesium silicate or a magnesium silicate. | 05-31-2012 |
20120135907 | DEINKING A CELLULOSIC SUBSTRATE USING MAGNESIUM HYDROXIDE - A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide. | 05-31-2012 |
20120135908 | DEINKING A CELLULOSIC SUBSTRATE USING MAGNESIUM HYDROXIDE - A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide. | 05-31-2012 |
20130020041 | METHOD AND ARRANGEMENT FOR FEEDING CHEMICALS INTO A PULP PROCESS STREAM - An apparatus for feeding one or more chemicals into a process stream of a pulp process is disclosed, as well as a method of utilizing the apparatus for feeding one or more chemicals into a pulp process is disclosed. | 01-24-2013 |
20130078730 | METHOD FOR MONITORING AND CONTROL OF A WASTEWATER PROCESS STREAM - The invention is directed towards methods, compositions, and apparatus for accurately detecting the presence and amounts of contaminants in wastewater. The method comprises the steps of adding to a volume of wastewater at least one tracer molecule, observing the tracer for indications of particular contaminants, conducting at least one second form of contamination detection, and interrelating the two measured properties to identify the specific composition of the contamination. Using a tracer molecule allows for the detection of otherwise hard to detect oils and grease. Use of the second method however compensates for tracer interfering contaminants and allows for more accurate readings. The invention includes feeding of functional chemicals in response to the detections and conducting the detections online and continuously. | 03-28-2013 |
20130139981 | CROSS-LINKED GLYCEROL BASED POLYMERS AS DIGESTION AIDS FOR IMPROVING WOOD PULPING PROCESSES - The invention provides a method of improving the digestion of wood chips into pulp. The method involves: adding a cross-linked glycerol-based polymer additive to a solution used in the digestion process. This additive is unexpectedly effective at facilitating digestion. The branched and ether structure of the additive allows it to withstand the harsh nature of a high stress environment. In addition, it is more soluble in the harsh condition than other surfactants. The structure, resistance, and particular balance between hydrophobic and hydrophilic regions, causes the additive to increases the interaction between the wood chips and the digestion chemicals. This in turn reduces the costs, the amount of additive needed, and the amount of reject wood chunks that result from the digestion process. | 06-06-2013 |
20130206350 | METHOD FOR IMPROVING BRIGHTNESS IN BLEACHED PULP - The invention is directed towards methods and compositions for processes based on the combination of organic peroxyacids and ammonium salts that preserve and enhance the response to optical brighteners (fluorescent whitening dyes), brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The composition and method improve response to optical brighteners (fluorescent whitening dyes), maintain and/or enhance brightness and enhance the performance of paper products. Used in combination with optical brighteners the described agents produce a synergistic effect not previously identified in the paper process. | 08-15-2013 |
20140259458 | PROCESSES AND COMPOSITIONS FOR BRIGHTNESS IMPROVEMENT IN PAPER PRODUCTION - Compositions and methods that preserve and enhance the brightness of pulp, and also improve the color of pulp or paper, when applied during different stages of a papermaking process, are disclosed. The compositions and methods maintain or enhance brightness, prevent yellowing, and enhance the performance of paper products. The compositions can include a mixture of reducing agents and can also include optical brighteners, chelants, polycarboxylates, or other additives. The mixture of reducing agents can include a borohydride, such as sodium borohydride, and any other reducing agent, such as a sulfite or bisulfite. | 09-18-2014 |
20140318724 | METHOD AND CHEMICAL COMPOSITIONS TO IMPROVE EFFICIENCY OF CHEMICAL PULPING - The invention provides methods and compositions for enhancing the digestion of pulp in a chemical pulping process. The method uses ultra-low, economically feasible dosages of BH applied right before the pulping process begins, in a stable alkaline solution fed into white liquor line, to improve the process by saving pulping chemicals, increasing pulp brightness and yield and reducing the kappa number. | 10-30-2014 |
20150029496 | METHOD OF DEPOSITION MONITORING - The invention provides methods and compositions for measuring the formation of scale within a process system. The method involves measuring changes in the cell fouling as reflected on the refraction index measurements of a liquid medium with a refractometer and determining the scale formation from changes in the cell fouling factor. This allows for a refractometer to determine the formation of scale in locations that otherwise would not be measureable. | 01-29-2015 |