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JPH0641890A |
PURPOSE: To prevent the invasion of a treating solution as much as possible to minimize the consumed power of a high pressure pump and retard the progress of the abrasion of the feeder by maintaining an interval between a rotor and a cas...
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JPH05195464A |
PURPOSE: To enable to stably control the kappa number of the digestion product to a desired value even in the case of a special raw material such as an L material. CONSTITUTION: The controller is composed of a recycling means, a temperat...
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JPH05163690A |
PURPOSE: To obtain a paper pulp having optimum viscosity/kappa and/or pulp strength property with high yield by making two kinds of white liquor having different sulfur content, sending a high sulfur content white liquor into impregnatio...
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JPH05117987A |
PURPOSE: To provide a two stage pressure diffuser for dividing flows appropriately without causing channeling and closing by placing a baffle stretching along a length of at least almost all part of one stage with a transverse wall near ...
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JPH0514191U |
[Purpose] A batch wooden kettle that employs a cold blow method is used to obtain quality equal to or better than that of pulp produced by a continuous cooking system. [Constitution] A cooking device that crafts and elutes cellulose fibe...
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JPH0510497U |
[Purpose] Seal the low pressure feeder to prevent steam from the steaming vessel from leaking into the chip bin. [Constitution] A nozzle 5 for supplying white liquid is attached to the side surface of the low-pressure feeder 1 in the vic...
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JPH05500086A |
(57) [Summary] Since this publication is application data before electronic filing, summary data is not recorded.
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JPH05795U |
[Purpose] A series of operations for pump overload and its elimination are automatically performed to reduce the burden on the operator and to stably discharge pulp. [Constitution] A liquid level sensor that detects the liquid level in t...
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JPH04135996U |
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JPH04127296U |
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JPH0470435B2 |
A process and mechanism for cooking fibrous paper pulp including a digester (10) wherein the pulp is cooked under elevated temperatures and pressures for a predetermined time, a discharge line (22) leading form the lower end of the diges...
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JPH04272288A |
PURPOSE: To prevent each strainer for filtering used black liquor of a continuous cellulose digester from clogging. CONSTITUTION: A branch pipe 6 is branched from the middle of a black liquor- extracting conduit 4 for extracting the blac...
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JPH04240283A |
PURPOSE: To provide an apparatus and process for the solvent pulping and washing of pulp, facilitating the solvent pulping and washing of the pulp and reducing the loss of an alcohol, by disposing first and second steaming vessels and fi...
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JPH04240282A |
PURPOSE: To provide a method for producing cellulosic pulp, reducing the consumption of a chemical agent and improving the operability, by making a comminuted cellulosic fibrous material and a sulfite cooking liquor flow into an upright ...
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JPH04228689A |
PURPOSE: To minimize an abrupt change in high-pressure steam flow in a continuous digester for paper pulp. CONSTITUTION: A vertical vessel is provided with 1st and 2nd ring screens 12, 13 separated from each other in the vertical directi...
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JPH0450430B2 |
Method for transferring fibrous materials transportable with a liquid between various treatment stages, preferably from digesting (10-16) to a subsequent treatment (38) by means of circuits of circulating liquid. Material from one or sev...
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JPH0450428B2 |
A method for producing both kraft pulp and alcohol from hardwood chips or the like. The chips are subjected to mild acid prehydrolysis following by mild caustic pre-extraction. The withdrawn hydrolystate has insufficient furfural to inhi...
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JPH0444037B2 |
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JPH04194092A |
PURPOSE: To improve the total operation efficiency of a material division and a power division by displaying various data processed by a kraft pulp total controlling means and carrying out the assistance of production plan and assistance...
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JPH0456795U |
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JPH0415312B2 |
A modified batch cooking technique for making sulfate pulp with a high degree of delignification or with a normal degree of delignification but with increased pulp viscosity. This is effected by one or several displacements of the liquor...
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JPH0413475B2 |
A method and system for cooling pulp discharged from a batch type digester and recovering heat from it. A stream of pulp together with spent cooking liquor is discharged from a batch digester to a diffuser and passed through the diffuser...
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JPH047668B2 |
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JPH047669B2 |
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JPH03111599U |
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JPH03227472A |
PURPOSE: To carry out an efficient operation by dividing a digester into plural stages from the top part to the bottom part and considering the difference of the reaction rate constant depending on weighting of H-factor to the respective...
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JPH03227474A |
PURPOSE: To readily carry out an accurate control of liquor ratio by calculating the liquor ratio from the alkaline concentration in a digested white liquor discharged to a top circulation line of a digester, the alkaline concentration o...
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JPH03227473A |
PURPOSE: To calculate an accurate residence time by calculating the residence time from a concentration-corrected flow rate signal of a blow discharged from a digester and a volume of a prescribed zone in the digester. CONSTITUTION: The ...
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JPH0362836B2 |
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JPH0345150B2 |
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JPH0367094U |
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JPH03130482A |
PURPOSE: To improve heat consumption by mixing a mixture of spent lye of cooking and wash lye, i.e., a spent liquor with wood chips impregnated with cooking lye, recovering steam from a part of transferred liquid removed from a digester ...
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JPH0323759B2 |
The apparatus comprises a centrifugal pump (1) fed by a screw feeder (8). The screw feeder comprises a screw (9) with a partially open thread (11). The screw (9) is driven separately in opposed direction to and with a lower speed than th...
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JPH0333287A |
PURPOSE: To minimize mechanical actions on chips by making a slurry liquid of a cellulosic fibrous material in an impregnation vessel flow in an upward direction, placing the slurry liquid in a solid/liquid separator at the top of a dige...
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JPH036496U |
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JPH0253550B2 |
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JPH0299679A |
PURPOSE: To readily and correctly control the digestion of cellulose by analyzing a volatile acid generated in a delignification in digesting a cellulose-containing material and deciding a time required to attain a desired digesting degr...
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JPH0156196B2 |
Apparatus for reacting lignocellulosic material with a gas phase comprising a nitrogen oxide and oxygen under controlled gas pressure in the presence of water, for example, as a pretreatment before an alkaline delignification, comprising...
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JPH01282393A |
PURPOSE: To make the cooking time to achieve a desired degree of delignification readily determinable by analyzing a monomeric compound produced by lignin degradation during the cooking. CONSTITUTION: A monomeric compound produced by lig...
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JPH01244338A |
PURPOSE: To minimize the amount of fine talc as required, by observing the sample of raw material with a phase difference microscope, and automatically counting the number of colloidal pitch particles having a spherical shape and luminan...
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JPH01239184A |
PURPOSE: To always maintain gap between a casing and a rotor in a normal state, by detecting a load torque of a motor for driving to rotate a truncated cone rotor revolving in the casing and regulating operation of a motor for pushing th...
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JPH01239183A |
PURPOSE: To precisely control the composition between conifer and hardwood so as for bleaching condition to be optimized by determining the composition proportions of a wood chip mix dispensed in alkaline delignifying processes through t...
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JPH01502206A |
In a process for digesting plant and wood fibers or for delignification, optinally with preceding deinking, of fibers from chemical or mechanical pulps, optionally with succeeding bleaching, the fibrous raw material is digested or delign...
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JPH01106595U |
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JPH0129918B2 |
The present invention solves the problems encountered when charging oxygen (O2) to and removing inert gas from the reactor gas obtained in the activation of lignocellulosic material with gas that contains nitrogen dioxide (NO2) and subse...
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JPH01148889A |
PURPOSE: To provide an apparatus and method for reducing scale formation in pulping operations through such a process as to remove scale-forming constituents such as calcium carbonate included in a liquor and then feed a continuous diges...
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JPH0120277B2 |
A method and apparatus for continuously treating cellulosic chips to prevent degredation of the chips as a result of mechanical action exerted on the chips by a scraper. A false bottom is provided in a vessel with the scraper mounted for...
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JPS6445886A |
PURPOSE: To control the temperature of cooking liquor by predicting the H factor needed for the target Kappa number and control the Kappa number with high accuracy by learning and correcting the parameters of the prediction relation and ...
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JPS643993B2 |
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JPS643992B2 |
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