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JP2022149116A |
To provide a method for producing depolymerized isolated lignin having high solubility.A method for producing isolated lignin-containing material is provided, comprising: (a) decreasing the pH of black liquor obtained by performing alkal...
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JP2022538177A |
The present invention enables automatic monitoring of smelt flow exiting a recovery boiler based on optical information. A processor is used to read out at least one stationary imaged video sequence comprising digital image frames includ...
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JP2022125125A |
To provide efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials.The invention is related to compositions and processes concerning (i) recovery of organic acids from a cellulosic pu...
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JP2022533536A |
The present invention makes it possible to use optical information from chemical smelt samples to determine the reduction rate of the recovery boiler. A processor is used to read a digital frame, at least part of which represents a chemi...
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JP2022101150A |
To provide a method for producing a low molecularized isolated lignin.A low molecularized isolated lignin of the invention is obtained by carrying out the following procedures of: (a) lowering the pH of the black liquor obtained by alkal...
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JP7070612B2 |
Provided is a technique with which the operation of a green liquid treatment can be easily managed.　The present invention provides: a green liquid treatment method in which the color tone of a green liquid is monitored and a drug injec...
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JP7052855B1 |
To provide a technique for better modifying dregs generated by green liquid treatment. The present invention can provide a dregs modifier containing a dispersant. The present invention can provide a dregs modifying method in which the dr...
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JP7051449B2 |
To provide a black liquor combustion apparatus capable of suppressing formation of sodium carbonate.The black liquor combustion apparatus contains: a furnace 22; a black liquor feeder 24 for feeding a black liquor containing sodium havin...
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JP2022056827A |
To provide a technique for reducing heavy metals derived from inorganic particles of composite fibres from wastewater generated during the production of sheets in a paper machine from raw materials containing composite fibres of cellulos...
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JP7050747B2 |
The present invention relates to novel lignin-derived compounds and compositions comprising the same and their use as redox flow battery electrolytes. The invention further provides a method for preparing said compounds and compositions ...
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JP3236936U |
To provide a pulp liquid evaporation system for reducing scale formation of an evaporator. A pulp liquid concentrating system 200 has a plurality of evaporators 201a to 201f arranged in series, and a pipe at an inlet of the evaporator 20...
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JP2022520419A |
According to an exemplary embodiment of the invention, in a pulp factory using a crafting process for producing cellulose pulp, a method of replacing the sulfur loss caused by the spill with a sodium supplement chemical is provided, the ...
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JP7029280B2 |
To provide a pulp production profit and loss calculation system that enables selection of the optimum raw material type through estimation based on the raw material type of profit and loss based on each of pulp and black liquid obtained ...
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JP6916936B2 |
The present invention relates to a process for treating a feedstock (101) comprising tall oil, the process comprising separation of a light stream (129) from the feedstock (101), followed by removal of a heavy fraction (108) from the fee...
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JP6901032B1 |
To provide a technique for treating green liquor better. The present invention is a green liquor treatment agent containing a cationic polymer having no ester-bonded cationic group as an active ingredient. Green liquor treatment method i...
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JP6773658B2 |
This disclosure pertains to the use of black liquors from kraft pulp mills as a source of catalysts for the thermochemical conversion of organic matter feedstocks to bio oils. More particularly, some embodiments pertain to integrated kra...
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JP6752359B2 |
The invention relates to a process for isolation of hemicelluloses from biomass pulping process waters or spent liquors with removal of suspended solids, concentration of the product and purification of the product by removal of inorgani...
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JP6741827B2 |
A process is disclosed for fractionating biomass-based material. The process comprises evaporating an evaporable part of biomass-based material (104) in a short path evaporator, SPE (105), to produce a depitched lights fraction (106) in ...
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JP6738713B2 |
The present disclosure describes a system for predicting explosions in a dissolving tank. The system includes acoustic emission sensors placed in or around the dissolving tank. By filtering the recorded frequencies to the range which is ...
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JP6687594B2 |
The invention relates methods and processes for the separation and refining of lignin from spent cooking liquor, called black liquor, present in industrial chemical plants, and compositions thereof.
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JP6662423B1 |
[Task] An object of the present invention is to provide a method for efficiently separating lignin from the black liquor discharged from the kraft steaming step. a) Add acid and / or carbon dioxide to the black liquor to lower the pH to ...
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JP2019537674A |
A method and system for the treatment of sludge in a chemical pulp plant, including the step of hydrothermally carbonized HTC of sludge stream, wherein the sludge stream is fed into the HTC facility and subjected to temperature rise and ...
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JP2019533092A |
A system (10) for treating pulp effluent (14) containing lignin is disclosed so that green liquor (47) is provided. The system (10) includes an evaporator (22), a recovery boiler (34), at least one filter (58, 74), and a green liquor pla...
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JP2019173237A |
To provide a simple production method of obtaining an aromatic monomer such as vanillin, a vanillic acid, syringaldehyde, a syringic acid, acetovanillon and acetosyringone, which can be used as raw materials of a perfume, a phenol resin,...
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JP6556264B2 |
A method of recovering wood pulping chemicals from black liquor produced in a wood pulping process where the process entails burning the black liquor in a recovery boiler to form ash containing high levels of carbonate as well as sodium,...
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JP6502961B2 |
A method for handling spent wash solution produced in the washing of lignin that has been precipitated and then separated from spent alkaline pulping liquor. At least part of the spent wash solution is introduced into the chemical recove...
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JP6456407B2 |
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JP6448297B2 |
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JP6417963B2 |
To provide a treatment method and apparatus which remarkably reduce drain water discharged during removal of chlorine and potassium.A treatment method of collected ash of a recovery boiler includes the steps of: mixing at least a part of...
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JP6409486B2 |
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JP6398176B2 |
To provide a processing method capable of discharging potassium and chlorine with excellent energy efficiency from the collected ash of a recovery boiler.A processing method for recovery boiler collection ash comprises: a step of mixing ...
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JP6390050B2 |
Techniques for converting a portion of a carbonate to hydroxide include receiving an alkaline carbonate solution that includes between 0.1M (moles per liter of solution) to 4.0M hydroxide and between 0.1M to 4.1M carbonate; reacting, in ...
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JP6364745B2 |
To provide a processing method capable of discharging potassium and chlorine with excellent energy efficiency from the collected ash of a recovery boiler, and a processing method capable of attaining a high sodium recovery ratio.A proces...
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JP6357013B2 |
A flash tank (10) includes: an interior chamber having a interior surface formed by a sidewall of the flash tank (10); a vapor exhaust port coupled to an upper portion of the chamber; a liquid discharge port coupled to a lower portion of...
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JP6298813B2 |
The method and apparatus are for obtaining strong white liquor and lime mud with low residual alkali content from causticized liquor. The first filter (FWL) receives causticized liquor from causticizing vessels (CT1-CT2-CT3) and is desig...
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JP6283693B2 |
A process for recausticizing green liquor in a sulphate or Kraft process for wood pulp production, in which a green liquor consisting of an aqueous solution of sodium carbonate as the major component and sodium sulphide is admixed with c...
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JP6283426B2 |
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JP6258971B2 |
A wood pulping process includes producing weak black liquor and cooling the liquor as well as recovering heat therefrom by directing the weak black liquor through a spray film evaporator. A feed or condensate is directed into the spray f...
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JP6192183B2 |
A method to be used in conjunction with a single-stage or multi-stage process for leaching ash originating from the recovery boiler of a pulp mill, particularly when the ash contains a significant amount of carbonate, wherein calcium com...
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JP6179360B2 |
To provide a processing method capable of efficiently exhausting potassium or chlorine from collected ash of a recovery boiler.The invention relates to a processing method of recovery boiler collected ash having a process of mixing at le...
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JP6092285B2 |
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JP6057800B2 |
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JP2016198730A |
To provide an inorganic particle recovery apparatus capable of improving the removal efficiency of organic matter contained in a fluid to be treated by oxidation to improve the recovery efficiency of inorganic particles.An inorganic part...
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JP6014256B2 |
In a digester, wood chips and white liquor are combined and cooked under pressure to pulp the wood. This produces black liquor which is concentrated and burned in a recovery boiler. The recovery boiler produces ash that contains sodium, ...
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JP2016183101A |
To optimize the recovery of sodium species in the white liquor while minimizing the amount of water required for washing.MEANS FOR SOLVING THE PROBLEM: A method for obtaining particulate calcium carbonate comprises the steps of: providin...
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JP5992423B2 |
A method and assembly for separating contaminants from liquids, such as condensates, or vapors at an evaporation plant. The contaminants are separated from liquids by stripping when bringing a contaminant-enriched liquid into direct cont...
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JP2016151073A |
To provide a black liquor recovery boiler capable of preventing the damage of a furnace wall by suppressing the repeated generation of a thermal stress in the furnace wall.A black liquor recovery boiler 1 for burning a black liquor 10 to...
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JP5938979B2 |
To efficiently obtain plant fibers from a plant-based raw material, that is difficult to delignify, by oxidizing a lignin component contained in the plant-based raw material under mild conditions, the fibers containing cellulose and hemi...
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JP5934854B2 |
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JP5898677B2 |
A method was developed for: a) improving the filterability of acid-precipitated lignin from kraft black liquors, b) increasing the dry solids content of the final lignin product, c) reducing the acid requirements and d) minimizing or eli...
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