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JP5894594B2 |
The present invention relates to a process tor the production of precipitated lignin from black liquor wherein the process comprises the steps of providing a black liquor stream treating the black liquor at an increased temperature and p...
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JP5846234B2 |
The present invention provides an aid for dewatering lime mud, said aid being capable of efficiently dewatering a muddy substance containing calcium carbonate, and containing a polyoxyethylene polyoxypropylene alkyl ether represented by ...
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JP2015535039A |
In one embodiment, a chemical reagent is inserted into a process stream containing one or more lignins to form one or more modified lignins. The one or more modified lignins formed are different from the one or more lignins in the proces...
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JP5788335B2 |
There is disclosed a process for the manufacturing of shaped cellulose materials from lignocellulose wherein a dissolving grade pulp is manufactured and dissolved in an aqueous alkaline or acidic solvent system forming a solution suitabl...
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JP2015160193A |
To provide a treatment method and a treatment apparatus of recovery boiler collection ash capable of efficiently recovering a high purity sodium salt such as sodium sulfate and the like with a little contamination of a potassium salt and...
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JP5759840B2 |
To provide a method and device for anaerobic treatment, which can start up rapidly after operation has been suspended by an improvement in a method of operating the facility for anaerobic treatment during the operation suspension.In a me...
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JP5740088B2 |
The invention is related to a method for emptying a furnace floor in a soda recovery boiler when the soda recovery boiler is being shut down. The emptying may be started while smelt is still flowing in smelt spouts. The floor is emptied ...
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JP5734572B2 |
A method for generating steam in a digester plant of a chemical pulp mill including: producing black liquor in the digester plant, extracting a first stream of black liquor from the digester; generating vapor by evaporating the first str...
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JP5727993B2 |
A method for inhibiting the formation, deposition and adherence of calcium salt scale to metallic and other surfaces in the equipment, vessels and/or piping of a chemical pulp process facility comprising adding an effective scale inhibit...
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JP5712754B2 |
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JP5707331B2 |
A method for emptying a furnace floor from smelt in a black liquor recovery boiler when the black liquor recovery boiler is being shut down. The emptying can be started while smelt is still flowing in smelt spouts. The floor is emptied b...
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JP2015001036A |
To provide a treatment method of a black liquid capable of easily performing a treatment of a black liquid by removing silicon dioxide from the black liquid.The provided treatment method of a black liquid treats a black liquid obtained b...
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JP5632151B2 |
Composite panels and pulp, and paper products of the pulp, are produced from Arundo donax. In the fabrication of the composite panels, Arundo donax is comminuted to a suitable size, combined with a binder, and consolidated into panels th...
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JP5619476B2 |
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JP2014173198A |
To provide a method for decomposing a lignin efficiently in short time easily in a treatment process of paper making and paper pulp making or in a preliminary treatment of bioethanol formation from woody biomass.The method is characteriz...
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JP5539844B2 |
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JP5481589B1 |
To provide a lime mud recovery method which can obtain low water content lime mud when recovering lime mud from lime mud slurry generated in kraft pulp manufacturing.A lime mud recovery apparatus includes: a storage tank which stores lim...
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JP5467161B2 |
A flash tank (10) including: a closed interior chamber (38); a gas exhaust port (17) coupled to an upper portion of the chamber (38); a liquid discharge port (19) coupled to a lower portion of the chamber (38); an inlet nozzle (34) attac...
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JP5461196B2 |
Methods of increasing the yield of tall oil soap from a black liquor are provided. In an embodiment, the method comprises adding a separation aid to the black liquor. The separation aid comprises alkyl alcohol alkoxylates of formula RO[(...
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JP2014055368A |
To provide a method of suppressing loss of borate from a dust generated in a recovery boiler at operating borate sectional automatic caustification, which solves problem of losing borate mainly at discharging of the dust because a part o...
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JP5420858B2 |
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JP2013256779A |
To provide a roadbed material which combines a strength and elution inhibition of heavy-metals by using cement and a black liquor generated from a digestion step of a kraft pulp manufacturing step for combustion ash that is industrial wa...
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JP5340267B2 |
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 evaporato...
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JP5314295B2 |
To provide a method for efficiently obtaining calcium carbonate having good grindability and suitable as a coating pigment, in a method for producing calcium carbonate in a causticizing process of a pulp production process by a sulfate m...
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JP5302485B2 |
Composite panels and pulp, and paper products of the pulp, are produced from Arundo donax. In the fabrication of the composite panels, Arundo donax is comminuted to a suitable size, combined with a binder, and consolidated into panels th...
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JP2013536154A |
A method for obtaining particulate calcium carbonate exhibiting improved brightness and color and having uniformity of size such that when the particles are formed in the causticization process in a kraft pulp mill, the time required to ...
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JP5272462B2 |
The invention provides a scale forming inhibitor which is the material made by a cheap and simple manufacturing system and can fully inhibit scale forming in a green liquor manufacturing system, a scale inhibitor inhibiting method and a ...
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JP5231067B2 |
To provide a cleaning method important for recovering performance of an electrolyte cell in a method for efficiently preparing a cooking liquor containing high concentration of polysulfide sulfur from a white liquor through an electrolys...
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JP5215800B2 |
To provide an anaerobic treatment method for pulp wastewater which achieves stable treatment without requiring equipment for pretreatment such as floatation separation. A magnesium silicate compound is added to the pulp wastewater to tre...
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JP5217540B2 |
To provide a method for producing kraft pulp, capable of efficiently deodorizing condensed water produced in making a retrieving treatment of cooking effluent (black liquor) produced in the kraft pulp production process, and also capable...
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JP2013524030A |
Method for recovering chemicals and energy from sulphite thick liquor containing organic and inorganic compounds obtained when producing pulp by chemical delignification of fibrous raw material using a sulphite pulping process, the metho...
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JP5165419B2 |
To provide a system for efficiently using a lignocellulose, which organically combines three processes of an ethanol fermentation process, a kraft process and a sulfite process and make them cooperatively act by putting them to combined ...
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JP2013049278A |
To provide composite panels and pulp which are produced from Arundo donax (a type of grass).Arundo donax is comminuted (20) to a suitable size, combined with a binder (40, 50), and consolidated (80) into panels that meet standards for co...
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JP5114595B2 |
Continuous measurements are made of a characteristic of the individual components of green liquor fed to a slaker and white liquor exiting from the slaker. The liquor component measurements provide a precise characterization of the liquo...
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JP5098635B2 |
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JP5006806B2 |
Continuous measurements are made of a characteristic of the individual components of green liquor fed to a slaker and white liquor exiting from the slaker. The liquor component measurements provide a precise characterization of the liquo...
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JP4998982B2 |
An agent for accelerating the dehydration of lime mud, comprising a polyoxyethylene polyoxypropylene alkyl ether represented by the general formula (1) as an active ingredient: R1O[CH2CH(CH3)O]m[CH2CH2O]n (1) wherein R1 represents a line...
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JP5002458B2 |
Method for separating lignin from black liquor includes the following steps: a) precipitating lignin by acidifying black liquor and thereupon dewatering, b) suspending the lignin filter cake obtained in step a) to obtain a second lignin ...
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JP4987969B2 |
A cleaning apparatus for cleaning a smelt spout of a boiler is provided. The boiler includes a boiler wall defining an outlet port for discharging molten smelt and the smelt spout is positioned with respect to the outlet port so that the...
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JP4984688B2 |
To provide a method in which an unburned combustible content of an oil coke does not remain in a calcined material taken out from a rotary kiln even if the oil coke is used as a fuel when a lime sludge is calcined by the rotary kiln in o...
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JP4958788B2 |
The present invention relates to a method of treating lime mud slurry being generated in a causticizing process in a pulp mill in a disc filter, in which method the lime mud is fed in the filter, thickened on the filter discs and removed...
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JP4957371B2 |
To provide a method of effectively removing sulfur in combustion gas in a fluid bed furnace which effectively utilizes lime sludge generated in a paper mill. In the method of removing sulfur in the fluid bed combustion equipment, the lim...
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JP4945437B2 |
The method and an arrangement are for dewatering and washing lime slurry before the dewatered lime mud is passed to a lime mud kiln. The lime slurry is dewatered in a pressurized lime mud filter of disc or drum type. The pressurized lime...
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JP2012091072A |
To provide a dehydration accelerator of lime sludge, which can greatly reduce a water content ratio in lime sludge cake in a causticizing process of kraft pulp production.The dehydration accelerator of lime sludge contains a specific pol...
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JP2012081760A |
To provide composite panels that are fabricated from Arundo donax (one kind of grass), and to provide pulp produced from the Arundo donax.In the fabrication of the composite panels, Arundo donax is comminuted 20 to a suitable size, combi...
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JP4887299B2 |
A method for precipitating (separation) of lignin, using small amounts of acidifying agents, whereby a lignin product or an intermediate lignin product is obtained which can be used as fuel or chemical feed stock (or as a chemical or a r...
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JP4884630B2 |
Pulping liquors used in the bleaching of pulps by hydrogen peroxide, and containing catalase-producing bacteria and/or catalase enzyme are treated with tris (hydroxymethyl) phosphine or a tetrakis (hydroxymethyl) phosphonium salt to kill...
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JP4885864B2 |
In a boiler, a space is reserved to expand the boiler by increasing the front and rear walls. To expand the boiler, wall additions are added to increase the width of the front and rear walls. After the expansion, the distance between the...
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JP4878982B2 |
A chemical pulp mill system and method of using black liquor flashing steam from a digester system comprises generating black liquor in the digester system, sending the black liquor to an evaporator system without using any pre-evaporato...
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JP4862980B2 |
A method for the preparation of pulp by means of alkaline cooking, in which method spent liquor is transferred to pressurized tanks, and at least one liquor is expanded corresponding to a temperature difference of 1 to 5° C. The generat...
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