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JP2004353095A |
To provide a method for preventing the deposition of anthraquinone scales developed in a black liquor-concentrating process, when pulp is produced with an anthraquinone compound by a pulp-producing method having at least a digesting proc...
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JP3600315B2 |
A foam control agent comprising 100 parts by weight of (A) a water-insoluble organic liquid, (B) from 0.1 to 20 parts by weight of a first hydrophobic filler which is insoluble in the organic liquid (A) and (C) 0.1 to 20 parts by weight ...
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JP3578032B2 |
To enhance the combustion efficiency of a recovery boiler in a craft pipe manufacture process. A nozzle plate whose surface is convex when viewed from the side of a jet orifice is attached, in fan form at a specified angle with the direc...
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JP3576562B2 |
Steam (preferably clean steam) having less noncondensible gases than steam produced by conventional black liquor flashing is produced from hot black liquor from a digester of a pulp mill. A heat exchanger is utilized and the hot black li...
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JP3561039B2 |
PURPOSE: To obtain a foam controlling agent comprising a water-insoluble org. liquid and first and second hydrophobic fillers each insoluble in the org. liquid and showing improved antifoaming ability by specifying each average particle ...
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JP2004223506A |
To provide an apparatus and a method for reducing an odor from a soda recovery boiler in the manufacture of kraft pulp, which has a simple structure, does not break an alkali balance or a water balance, does not produce an additional was...
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JP2004195425A |
To provide a method of removing malodorous substances (hydrogen sulfide, methyl mercaptan, dimethyl sulfide and dimethyl disulfide, etc.) contained in waste water or sludge generated in a paper/pulp mill.To the waste water to be discharg...
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JP2004197293A |
To provide a method for increasing calorific value for burning recovered black liquor in a recovery boiler in a craft pulp manufacture process.The method for increasing calorific value for burning recovered black liquor comprises additio...
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JP2004183117A |
To provide a method for reducing hydrogen sulfide in a lime baking furnace controlling the degree of washing of lime mud so as to afford ≤0.05 mass% of sodium sulfide content derived from white liquor in the lime mud fed to the lime ba...
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JP2004517231A |
Oxidized white liquor is heat treated to increase the concentration of PSUV measured at 285 or 286 nm or PSVIS measured at 416 nm and the PSUV/PSGR or PSVIS/PSGR ratio, whereby the content of active polysulphide in the total polysulphide...
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JP2004160347A |
To provide a technique for highly clarifying an aqueous solution containing sodium carbonate easily at a low cost without using special equipment.The aqueous solution containing sodium carbonate is clarified by adding the cationic macrom...
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JP3531153B2 |
To improve the wear resistance of a plastic wire by adding a sulfate having acidity into a dispersion of a filler consisting essentially of precipitated calcium carbonate generated in a caustificating process of craft pulp to neutralize ...
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JP3513619B2 |
PURPOSE: To satisfactorily and easily start a batch digester. CONSTITUTION: A first portion of washing liquid is supplied to the digester in order to displace a first portion of the spent cooking liquor having a temperature and dry solid...
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JP2004026639A |
To provide a method for manufacturing high-quality calcium carbonate from the green liquor by-produced in a pulp manufacturing process.Prior to causticize the green liquor, the lightness of the filtration residue of the green liquor meas...
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JP3491163B2 |
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 packin...
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JP3477342B2 |
To obtain an air port nozzle using a material capable of suppressing eroding amount increased with raise of a furnace temperature. This air port nozzle is formed of a material composed of 0.08-0.15 wt.% C, 0.2-0.5 wt.% Si, 22-27 wt.% Cr,...
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JP2003340500A |
To obtain a dehydration accelerator for a calcium carbonate slurry which achieves a high dehydrating effect even when a smaller amount than the conventional amount is added and which does not affect the environment in consideration of gr...
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JP2003193385A |
To provide a papermaking chemical having excellent dispersing effect and to provide a method for efficiently producing a high quality pulp.This papermaking chemical comprises a polyaminepolyalkoxylate compound obtained by adding an alkyl...
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JP3414747B2 |
A method of controlling the pressure of a vertical continuous comminuted cellulosic fibrous material digester having a counter-current washing zone with wash screens, a main extraction, and at least one additional extraction-dilution loo...
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JP3411778B2 |
To provide a desorbing tank disposed on the side of a recovery boiler and used for dissolving an inorganic substance melted product (smelt) discharged from the bottom of the boiler, not requiring the removal of a liquid on the maintenanc...
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JP2003117596A |
To provide a novel oxidation removal method for hydrogen sulfide in the dregs slurry discharged from a causticizing process step of kraft pulp production.This method for oxidation removing the hydrogen sulfide in the dregs slurry compris...
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JP2003511569A |
Methods for producing chemical pulp from lignocellulose-containing material in processes for kraft pulp production are disclosed including charging the lignocellulose-containing material to a digester, initially treating the lignocellulo...
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JP3389582B2 |
PURPOSE: To readily carry out a base substitution of waste liquor of magnesium base sulfite pulp by using sodium carbonate as a replacing agent, subjecting waste liquor of magnesium sulfite pulp to base replacement with waste liquor of s...
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JP2003082592A |
To provide a method for producing nonwood pulp, capable of producing the pulp through an environment-friendly system.In this method for producing the nonwood pulp, a flue gas is washed with a potassium-based alkaline solution so as to fo...
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JP3382792B2 |
To provide a control method for grasping the property variation of collected ash by the real time and making the potassium removal rate and sodium removal rate optimum in compliance with the property variation of collected ash. In a firs...
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JP3382961B2 |
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JP3376943B2 |
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JP2003505612A |
A process for dewatering lime mud in a kraft pulping process is described. The process includes an improvement which comprises adding an effective amount of an alkyleneamine to the lime mud prior to filtration. The preferred alkyleneamin...
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JP3361279B2 |
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JP2002363877A |
To solve problems: pulps having fibers longer than the fibers of wood pulps can be produced from various hemps, and also from raw materials comprising leaves of pineapple, banana or the like, and they are valued highly as long fiber pulp...
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JP2002363878A |
To provide a method for manufacturing pulp having high whiteness, good in strength and having high quality in a closed system not only without using a chlorine bleaching agent but also without using a sulfur-based cooking chemical. The m...
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JP2002541355A |
The invention relates to a method for separating lignocellulose-containing biomass, especially wood, into the essential components in the form of lignin, hemicellulose and cellulose, with the following steps: a) pre-hydrolyzing the ligno...
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JP3349400B2 |
To simplify the structure, recover the heat from a smelt spout and utilize the heat effectively, relating to a smelt spout heat recovery system of a boiler for recovering chemicals from the black liquor occurring from pulp production pro...
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JP2002331202A |
To provide a removal device of sodium salts and potassium salts from the ashes collected by a soda recovery boiler preventing the crystal growth to the surface of a cooling part with cooling without particularly requiring cooling with ic...
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JP2002536563A |
A substantially sulfur free process for the manufacturing of a chemical pulp with an integrated recovery system for recovery of pulping chemicals is carried out on in several stages involving physical and chemical treatment of lignocellu...
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JP2002303403A |
To reliably seal a through-part for a cleaning rod or the like installed at a boiler, and to save an energy cost of gas used in seal.The through-part of a rod-form body 23 installed through an air duct wall 20 of a boiler, the rod-form b...
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JP3327715B2 |
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JP2002266268A |
To easily supply and produce excellent pulp by storing and transporting a large amount of non-wood fiber source as a raw material of pulp to stably supply it to a huge pulp mill, and promote the measures and streamlining of environment.T...
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JP3325324B2 |
A process for delignifying raw cellulose which comprises a preliminary treatment for impregnating raw cellulose with a monopersulphuric acid solution, a successive filtration without washing with recycle of the filtered liquid to the fir...
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JP3316893B2 |
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JP3310862B2 |
To obtain a material for coating the surface of a smelt spout, having sufficient corrosion resistance and strength in a non-cooling style, and capable of reducing the burden of maintenance. This smelt spout surface-coating material compr...
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JP3312029B2 |
PCT No. PCT/SE92/00835 Sec. 371 Date Jun. 23, 1994 Sec. 102(e) Date Jun. 23, 1994 PCT Filed Dec. 3, 1992 PCT Pub. No. WO93/12889 PCT Pub. Date Jul. 8, 1993The present invention relates to a cyclone, mainly for separating liquid from gas/...
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JP2002523651A |
(57) [Summary] A method of separating fiber components from a liquid containing fibers and microparticles by screening, wherein the inflowing liquid flows along a screen member having a screen opening, from the inlet (2) and through the ...
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JP3300263B2 |
To provide a method for producing a glossy coated paper excellent in gloss unevenness, mottling, and trapping unevenness, high in white paper glossiness and smoothness, and also excellent in operability using a blade coater. This glossy ...
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JP2002519536A |
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...
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JP2002146691A |
To provide a method for treating collected ash, by which chlorine is removed from collected ash in a cooking chemical recovery process in a pulp production, which is an industrially advantageous method using an ion exchange resin.This me...
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JP3278746B2 |
PCT No. PCT/SE93/01028 Sec. 371 Date Jun. 5, 1995 Sec. 102(e) Date Jun. 5, 1995 PCT Filed Nov. 29, 1993 PCT Pub. No. WO94/12723 PCT Pub. Date Jun. 9, 1994When producing green liquor for later manufacture of cooking liquor, it is endeavou...
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JP2002511535A |
A method in bleaching of pulp is described, in which the pulp is subjected to a peroxide bleaching step, whereupon the pulp is washed and the washing liquid from the washing is separated from the pulp in the form of a filtrate. The metho...
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JP2002506134A |
A method treats process water containing metal ions, in connection with bleaching of lignocellulosic pulp. The method is characterized by the steps of a) adjusting the Mg2+ content of the process water to form a flocculating base for met...
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JP3260935B2 |
PURPOSE: To obtain a scale inhibitor capable of suppressing scale produced in concentrating digester waste liquor in a pulp producing process. CONSTITUTION: This scale inhibitor contains polyitaconic acid or its salt and an aminopolyacet...
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