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62results about "Pulp de-watering" patented technology
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A raw material extrusion dewatering treatment device for rice paper processing
The application discloses a raw material extrusion dewatering treatment device for xuan paper processing and relates to the field of dewatering devices. The raw material extrusion dewatering treatment device for xuan paper processing comprises a dewatering tank, a plurality of groups of dewatering holes one are arranged on the side wall of the dewatering tank, a plurality of groups of dewatering rods are installed in the dewatering tank at equal intervals, the dewatering rods are arranged in a hollow mode and communicate with the outside of the dewatering tank at the bottom, and a plurality of groups of dewatering holes two are arranged on the surface of the dewatering rods, the three-dimensional structure of the four peripheral dewatering holes and the central hollow dewatering rod is adopted to cooperatively drain water, the water discharge resistance of the middle region of raw materials is greatly reduced, the problem of wet inside and dry outside of the traditional device is solved, the inner wall of the dewatering rod and the tank body are sprayed with a Teflon anti-sticking coating, the adhesion of raw material fibers and the blockage of the dewatering holes are reduced, the difficulty of equipment cleaning and maintenance is reduced, the service life of the equipment is prolonged, a hot air auxiliary drying and waste heat recovery system is additionally arranged, low-temperature pre-drying is realized at the same time of extrusion dewatering, and the energy consumption of the subsequent drying process is reduced.
Owner:ANHUI JINGXIAN TAOJI RICE PAPER CO LTD
A paper pulp centrifugal dewatering structure
The utility model discloses a paper pulp centrifugal dewatering structure, including the box, the outer surface of box is connected with the mounting bracket, the outer surface of mounting bracket is connected with the rotating mechanism, the outer surface inlay of box has the first bearing, the inner ring of first bearing is connected with the first rotary lever, the one end of first rotary lever is connected with the driven wheel away from first bearing, the one end of first rotary lever is connected with the dehydration bucket away from driven wheel, the outer surface of dehydration bucket is equipped with the dehydration mechanism. This paper pulp centrifugal dewatering structure because dehydration bucket is transversely placed, therefore, when the paper pulp reaches the high place and automatically falls according to gravity when carrying out dehydration in the dehydration bucket, it is convenient to carry out overall dehydration to all paper pulp in the dehydration bucket, avoid the dehydration process of inside paper pulp of outside paper pulp to influence, and utilize the scraper can scrape the paper pulp that sticks in the dehydration bucket, prevent its adhesion in the dehydration bucket, influence paper pulp dehydration effect.
Owner:DONGGUAN YUEKAI STATIONERY CO LTD
Paper pulp concentration device with adjustable angle
ActiveCN224199711URealize automatic adjustmentNo need to loosenPulp de-wateringPaper recyclingGear wheelClassical mechanics
Owner:QIANAN LONGDE PAPER PRODUCTS MANUFACTURING CO LTD
Method for dewatering microbial cellulose
The present invention relates to a method for dewatering microbial cellulose, the method comprising: contacting a wet microbial cellulose material with a hydrophilic polymer solution; maintaining contact between the wet microbial cellulose material and the hydrophilic polymer solution for a treatment period to remove at least a portion of the water from the wet microbial cellulose material; and removing the dewatered microbial cellulose from the hydrophilic polymer solution. the present invention further relates to a dewatered microbial cellulose material, the dewatered microbial cellulose material comprising: 25-95 % microbial cellulose by dry weight; and 5-75 % hydrophilic polymer by dry weight.
Owner:NANOLLOSE LTD
Drum washer with gravity assist drainage
A rotary drum filter includes a drum shell configured to rotate through a slurry, the drum shell having areas defining a plurality of drainage holes, at least one divider plate a first end and a second end, the at least one divider plate disposed on an outer surface of the drum shell and extending longitudinally and laterally along the drum shell, the first end being disposed near a drainage hole, and a filter medium disposed on one or more grids that are disposed on the outer surface of the drum shell above the at least one divider plate. The at least one divider plate is configured to direct filtrate on the outer surface of the drum shell filtered through the filter medium into the drainage hole.
Owner:ANDRITZ INC
Method and apparatus for treating mixtures of liquids and solids
ActiveUS12630976B2Sludge treatmentWashing/displacing pulp-treating liquorsMechanical engineeringMechanics
Owner:LEAN PULP OY
System and method for treating delignified cellulose pulp
PendingCN121629789APulp liquor regenerationWashing/displacing pulp-treating liquorsPulp and paper industryCellulose pulp
The present invention relates to a system for treating delignified cellulose pulp, comprising: consecutive first and second washing devices configured to receive and wash delignified cellulose pulp; an acidic bleaching device arranged to receive cellulose pulp from the second washing device; the post-acid-bleaching washing device is connected to the acid bleaching device and is used for washing the cellulose pulp received from the acid bleaching device; an alkaline bleaching device arranged downstream of the washing device; the alkaline bleaching post-washing device is connected to the alkaline bleaching device and is used for washing the cellulose pulp received from the alkaline bleaching device; a filtrate feeding means arranged to recycle the waste washing liquid from the post-alkaline-bleaching washing means as a diluent between the first washing means and the second washing means and / or as a washing liquid to the first washing means; and a source of water and / or condensate connected to the second washing device to provide a washing liquid.
Owner:VALMET AB
Pulp distributor and use method thereof
The invention relates to the technical field of pulping, and discloses a pulp distributor and a using method thereof.The pulp distributor comprises a feeding cylinder, an access hole is formed in the feeding cylinder, and a flushing pipe is installed on the feeding cylinder; a slurry inlet pipe is installed on the feeding cylinder, a lower slurry turning plate is fixed in the feeding cylinder, a penetrating opening is formed in the lower slurry turning plate, a gear motor is installed on the bottom face of the feeding cylinder, a rotating shaft is rotatably installed in the feeding cylinder, the rotating shaft is connected with an output shaft of the gear motor, and the rotating shaft penetrates through the penetrating opening formed in the lower slurry turning plate. The rotating shaft and the penetrating opening are rotationally connected in a sealed mode, and a pulp distributing cylinder is arranged above the feeding cylinder. According to the slurry stirring device, the upper slurry turning plate is arranged, the slurry is continuously pressed downwards by the upper slurry turning plate, the slurry is promoted to be discharged through the slurry discharging opening, and the slurry can be uniformly distributed on the whole cross section of the reaction tower under the continuous action of the upper slurry turning plate, so that the distribution uniformity of the slurry in the reaction tower is effectively improved, and the slurry reaction quality is guaranteed.
Owner:WENRUI MACHINERY SHANDONG
Method for preparing lyocell fibrillated fibers and use thereof
The application provides a preparation method of lyocell fibrillated fiber, and specifically comprises the following steps: S1, adding lyocell cut fibers into water to control the concentration to be 2-4%, and dispersing the lyocell cut fibers by using a pulper; S2, filtering water from the dispersed pulp by using a filter press to obtain 10-30% high-concentration pulp, and conveying the high-concentration pulp to a group of high-concentration pulping machines by using a screw feeder to perform pulping, so as to obtain pulp 1 with a beating degree of 40-50°SR; S3, diluting the pulp 1 to a concentration of 1-3% by adding water, and performing beating and defibration by using a high-frequency defibrator, and repeatedly performing beating and defibration by using the high-speed hydraulic shearing effect of the high-frequency defibrator, so as to obtain lyocell fibrillated fiber with a beating degree of 75-95°SR. The lyocell fibrillated fiber can obtain a larger length and a lower fine fiber component by fully utilizing the friction force between fibers and the hydraulic shearing effect, a large number of fibrils can be obtained, and the lyocell fiber can be fully fibrillated.
Owner:GUANGDONG IND TECHN COLLEGE
Disk filter control system and method
Disclosed is a disc filter system and method for dewatering a fiber suspension. The disc filter system includes a disc filter and a control system. The disc filter includes an inlet for introducing the fiber suspension into a tank, a rotor shaft, a variable speed drive unit operably connected to the rotor shaft, and at least one filter unit connected to the rotor shaft, the at least one filter unit rotating with the rotor shaft. The control system measures the torque applied to the variable speed drive unit and causes the variable speed drive unit to adjust the rotational speed of the rotor shaft from a first rotational speed to a second rotational speed based on the torque applied to the variable speed drive unit.
Owner:KADANT BLACK CLAWSON LLC
Efficient energy-saving process design method for multi-disc thickener
The invention relates to an efficient energy-saving process design method for a multi-disc thickener, which comprises the following steps: a bypass channel is constructed between a feeding end and a discharging end of the multi-disc thickener, and is used for guiding part of raw slurry entering the multi-disc thickener to directly flow to an outlet of concentrated slurry; the concentrated slurry is washed with the raw slurry, and the processing capacity of the multi-disc thickener is improved; the concentration of the raw slurry is 0.5-2%, and the concentration of the concentrated slurry is 3-10%. The problem that in order to supply white water and maintain operation of related equipment, extra electric energy needs to be consumed is solved, and the energy consumption cost is further improved. The problems limit the overall performance and the production benefit of the multi-disc thickener.
Owner:ZHEJIANG JINGXING PAPER
Vacuum system applied to pulp machine and pulp machine system
The utility model provides a vacuum system applied to a pulp machine, which comprises at least one steam-water separator, at least one magnetic suspension vacuum pump and at least one water ring vacuum pump, and each water ring vacuum pump is at least connected with one steam-water separator through a first vacuum suction pipeline. And one magnetic suspension vacuum pump is at least connected with one steam-water separator through a second vacuum suction pipeline. According to the scheme, a water ring vacuum pump, a first vacuum suction pipeline and a steam-water separator in a traditional vacuum system are reserved, and a magnetic suspension vacuum pump and a second vacuum suction pipeline are additionally arranged. The first vacuum suction pipeline and the second vacuum suction pipeline are connected with a first control valve and a second control valve in series respectively, and the first control valve and the second control valve are switched according to production requirements. The vacuum system adopting the magnetic suspension vacuum pump can effectively improve the overall efficiency and reduce the power consumption of the system. The utility model further provides a pulp machine system.
Owner:ASIA SYMBOL SHANDONG PULP & PAPER
Efficient dehydration device for wood pulp knots
The utility model relates to the technical field of dewatering devices, in particular to an efficient dewatering device for wood pulp knots, which comprises a storage barrel. The right end of the material storage barrel is fixedly connected with a material inlet, the right end of the material inlet is fixedly connected with the pump body, the right end of the pump body is fixedly connected with a material outlet I, the right end of the material outlet I is provided with a material falling pipe, one end, far away from the material outlet I, of the material falling pipe is fixedly connected with a material falling box, and the lower end of the material falling box is fixedly connected with the dewatering barrel; raw materials are controlled to enter the pump body, the discharging pipe and the discharging box from the feeding port and finally fall into the dewatering barrel, the spiral plate is controlled to rotate, extruded water can fall into the water storage pond through the water outlet hole, the dewatered raw materials can be extruded out of the second discharging port, and the bonded raw materials are blocked by the blocking disc and finally fall into the material storage box. Therefore, workers do not need to continuously add raw materials into the feeding port, and the materials are automatically fed mechanically, so that the dehydration efficiency is improved, and the waste of water resources is also reduced.
Owner:JIAXING OUBOTE PAPERMAKING EQUIP TECH CO LTD
Method for removing compound enzyme system and degrading starch in pulping process of waste box board
The invention discloses a method for removing and degrading starch by a compound enzyme system in a pulping process of waste box boards, which comprises alpha-amylase, beta-amylase, glucoamylase, pullulanase and pectinase. OCC white water and OCC paper pulp are subjected to enzymolysis through alpha-amylase and another three kinds of compound enzymes (beta-amylase, pullulanase and glucoamylase) which are compounded (the enzyme activity is conventional enzyme activity), and when the dosage of the compound enzymes is 1000 mL * t <-1 >, the enzymolysis rate of the compound enzymes is far superior to that of single alpha-amylase with the dosage of 5000 mL * t <-1 > at the same enzymolysis time; the starch decomposition rate of the waste paper pulp is increased by 3.75 times and reaches 42.8%, and the white water is correspondingly increased by 38% and reaches 42.8%.
Owner:JIANGNAN UNIV
Preparation of lyocell pulp by mixing bamboo and wood pulp and directional treatment process
ActiveCN121138052BPretreatment with alkaline reacting compoundsFats/resins/pitch/waxes removal in pulpCelluloseOXALIC ACID DIHYDRATE
The present application relates to the technical field of chemical fibers, and discloses a process for preparing lyocell pulp by mixing bamboo and wood pulp, comprising the following steps: bamboo pretreatment: cutting and shaping the bamboo, and then sequentially performing steam explosion defibration, acid treatment directional silicon removal and biological enzyme assisted delignification; wood pulp pretreatment: sequentially performing airflow sorting impurity removal, low-temperature alkali refining degreasing and biological enzyme deep purification; through the step-by-step directional pretreatment strategy, steam explosion causes microcracks in the cell wall of the short-cut bamboo fibers, and the high selectivity of the oxalic acid-ammonium fluoride composite acid liquid to silicate is used to achieve deep silicon removal of the short-cut bamboo fibers without damaging the cellulose skeleton; at the same time, the biological enzyme system step-by-step dissociates the hemicellulose side chain and the lignin aromatic ring structure, and removes the soluble oligomers, so that the risk of spinning blockage caused by silicon residues is eliminated under the premise of retaining the high polymerization degree cellulose of the bamboo, and the solubility of the pulp in the NMMO solvent is ensured.
Owner:SHANGHAI LYOCELL FIBER DEV
Method for producing a concentrated cellulose microfiber dispersion, and method for producing a resin composition
ActiveJP7850563B2Pulp de-wateringMonocomponent cellulose artificial filamentCellulosePolymer science
To provide a manufacturing method of a concentrate of a cellulose fine fiber dispersion, capable of manufacturing a concentrate with suppressed variation of solid fraction with low environmental load even when using a thin cellulose fine fiber dispersion.SOLUTION: Disclosed is a manufacturing method of a concentrate of a cellulose fine fiber dispersion, including a concentration process of deliquoring the cellulose fine fiber dispersion to obtain the concentrate, in which: an average fiber diameter of cellulose fine fibers in the cellulose fine fiber dispersion is 50-1000nm; in the concentration process, the cellulose fine fiber dispersion is subjected to deliquoring continuously at a processing speed of 1.0 kg-DS / h or over and under 45.0 kg-DS / h; in the concentration process, when measuring a solid fraction of the concentrate in a 10-times sampling, an average value of the solid fraction is 5 wt.% or over and 60 wt.% or under, and a CV value (standard deviation / average value) of the solid fraction is 0.001 or over and 0.300 or under.SELECTED DRAWING: Figure 3
Owner:ASAHI KASEI KOGYO KABUSHIKI KAISHA
Method and intermediate for the production of highly refined or microfibrillated cellulose
The invention concerns a method for the production of highly refined or micro- fibrillated cellulose (MFC), comprising the steps of treating cellulosic fibres to remove at least a major part of the primary wall of the fibres, drying the treated fibres, rewetting the treated fibres, and disintegrating the wetted fibres by me- chanical means to obtain the final product. The invention further concerns dried cellulosic pulp as an intermediate product of the method, having an aver- age fibre length of at least 0.4 mm, while less than 50 % of the primary wall material of natural untreated fibres is left in the intermediate product. Instead of transporting large amounts of dilute MFC dispersion the invention enables transport of the dry intermediate product to the MFC end user, who would complete the process by turning the intermediate product to final MFC by use of standard disintegrating devices.
Owner:STORA ENSO OYJ
Chemico-mechanical pulp transfer screw press suitable for double bleaching towers
The invention discloses an chemi-mechanical pulp transfer screw press suitable for double bleaching towers, and relates to the technical field of chemi-mechanical pulp treatment equipment, a rotating shaft is arranged in the transfer screw press, the diameter of the rotating shaft is obliquely arranged from small to large from left to right, and a spiral stirring blade is fixed on the rotating shaft; the feeding mechanism is arranged on the upper left portion of the two transfer screw press bodies. The dehydration mechanism is connected with the two transfer screw press bodies; the pushing mechanism is connected with the squeezing pipe; the first mounting frame is arranged between the pushing mechanism and the squeezing pipe; the rapid switching of the feeding pipelines is realized, and the continuous dehydration operation of the chemi-mechanical pulp in the double-bleaching-tower system is ensured; online cleaning during blockage is facilitated, and the downtime is shortened; accumulated slurry is thoroughly removed, and residues are prevented from affecting the subsequent process; the two sets of independent transfer screw press bodies are arranged, flexible switching is achieved through the material distribution mechanism, it is ensured that the system can still operate continuously when a single machine is maintained or cleaned, and the overall operation continuity is improved.
Owner:江苏博汇纸业有限公司
Vacuum dehydration device suitable for slurry compounding position of cylinder mould
A vacuum dewatering device suitable for a pulp compounding position of a circular cylinder mould relates to the technical field of papermaking appliances and comprises the circular cylinder mould which is rotatably arranged, a blanket is movably attached to the upper portion of the circular cylinder mould, a couch roll attached to the blanket is rotatably arranged above the blanket, and a vacuum pipe parallel to the circular cylinder mould is slidably arranged on one side of the couch roll in the longitudinal direction. Two suction soft plates are fixedly connected to the outer wall of the vacuum tube in parallel, the lower ends of the two suction soft plates make friction contact with the upper surface of the blanket, the area between the two suction soft plates is communicated with an inner cavity of the vacuum tube, and the vacuum tube is further lifted in the vertical direction to adjust the height of the vacuum tube. The utility model solves the problems that the extrusion effect between the blanket and the cylinder mould in the prior art can cause the instantaneous water pressure of the pulp with high water content, if the moisture is not discharged in time, the local damage of the fiber structure of the pulp is easily caused, the phenomena of embossing and crushing are shown, and finally, the uniformity of finished paper is reduced, and the physical property is degraded.
Owner:SHANDONG XIANHUA NEW MATERIAL TECH CO LTD
Process and system for preparing dry man-made cellulosic staple fibres
The invention relates to a process for preparing man-made cellulosic staple fibres (4) for yarn spinning, the process comprising manufacturing man-made cellulosic staple fibres (4) from cellulosic raw material (2) in a manufacturing step (10, 100) providing a mass (6) of wet man-made cellulosic staple fibres (4) as a manufacturing output. The process comprises flash-drying the wet man-made cellulosic staple fibres (4) with heated drying gas flow into dry man-made cellulosic staple fibres (4) in a drying step (150).
Owner:ANDRITZ OY
Method for manufacturing pulp
This invention relates to a method for manufacturing dried commercial pulp sheets, which includes adding a polymer composition.
Owner:爱森集团
Dried modified pulp with a certain content of microfibrils and pre-fibrillated fibers
The present invention relates to a modified pulp with a moisture content of less than 15% and a certain content of microfibrils and pre-fibrillated fibres. The modified pulp can, after suspension, be used either directly or be subjected to additional refining. The present invention also relates to a method of producing a fibrous product using the modified pulp.
Owner:STORA ENSO OYJ
Method for recycling of chemi-mechanical pulp sludge
This invention relates to the field of pulp and paper technology, specifically a method for recycling chemimechanical pulp residue. The method includes the following steps: S1: Pre-treating the chemimechanical pulp residue by separating wood chips, wood strips, and wood dust according to size using a drum-type grading screen; S2: Performing at least two stages of grinding on the pre-treated pulp residue, first coarsely grinding it into granules using a wood grinder, and then finely refining it into wood fibers using a high-speed refiner; S3: Performing multi-stage gradient screening on the wood fibers to remove different types of impurities; S4: Modifying the screened wood fibers using a low-consistency dual-disc mill to improve their water absorption and binding strength; S5: Mixing the modified wood fibers with long fibers and obtaining the finished fiber through a three-stage concentration process. This invention constructs a complete technical chain from graded pre-treatment to specific mixing and concentration, effectively solving the problems of equipment blockage caused by uneven pulp residue composition and poor binding strength of recycled fibers, achieving high yield and high-quality recycling of pulp residue.
Owner:SHANDONG BOHUI PAPER INDUSTRY CO LTD
Paper pulp dewatering and drying system
ActiveCN224395317UImprove drynessDehydration and drying energy consumption cost reductionPulp de-wateringFilter pressIndustrial engineering
A kind of paper pulp dewatering and drying system, the system includes plane filter press, pulp board shearing machine, pulp board stacking machine;The pulp board shearing machine is connected and installed in the rear end of the plane filter press, and the pulp board stacking machine is connected and installed in the rear end of the pulp board shearing machine.The utility model can improve the dryness of paper pulp by plane filter press dewatering, and then add heat drying to enhance the dryness of paper pulp, realize lower cost and folding endurance loss, improve the dryness of paper pulp after dewatering and drying and the quality and value of paper pulp.
Owner:GUANGXI LIYUANBAO SCI & TECH
Automatic dehydration device for producing coated white board
The utility model discloses an automatic dewatering device for producing coated white boards, which comprises a spiral squeezing dewatering machine, a feeding hopper is mounted on the upper portion of the spiral squeezing dewatering machine, and a spiral squeezing conveying pipe is arranged at one end of the spiral squeezing dewatering machine. The end, away from the spiral squeezing dehydrator, of the spiral squeezing conveying pipe is connected with a discharging port, a water drainage port is formed in the lower portion of the spiral squeezing conveying pipe, and a water drainage structure is arranged on the lower portion of the water drainage port. According to the automatic dewatering device for producing the coated white board paper, the filtering structure is arranged at the drainage position, fibers are recycled through a filtering method and reused for production, the sealing gasket and the sealing ring are arranged, the sealing effect can be achieved, and the supporting grid frame is installed on the inner wall of the filtering net, so that the filtering net is supported.
Owner:BENGBU SANXING PAPER CO LTD
A method and an apparatus for manufacturing cellulosic slurry for man-made cellulosic fiber production
The invention relates to a method for manufacturing cellulosic slurry for man-made cellulosic fiber production having a main process (100), the main process (100) comprising method steps of -providing pulp slurry (101), -dewatering (102) the pulp slurry at least partly to form pulp mass, -opening (108) the pulp mass for producing pulp with loosened cellulosic fibers, -drying (109) the pulp with loosened cellulosic fibers in a flash dryer (11-17) to form fluffy pulp, -mixing (107) the fluffy pulp in a mixer (18; 20) with a cellulose-swelling or dissolving medium to form cellulosic slurry for man-made cellulosic fiber production. The invention relates also to an apparatus (10) for manufacturing cellulosic slurry for man-made cellulosic fiber production.
Owner:ANDRITZ OY
Foamed articles of manufacture comprising nanocellulose elements
The invention includes simple NCE-based materials comprising a simple NCE-based matrix, wherein the simple NCE-based matrix comprises a population of redispersible NCEs treated with a drying / dispersal additive; wherein the matrix provides an architectural framework for the simple NCE-based material; and wherein the simple NCE-based material comprises a barrier formulation. The invention also includes foamed composite NCE- containing materials comprising a composite NCE-containing matrix, wherein the composite NCE-containing matrix comprises a population of redispersible NCEs treated with a drying / dispersal additive, and an existing matrix; wherein the NCEs are integrated into the existing matrix, and wherein the existing matrix provides an architectural framework for the composite NCE-containing material; wherein the composite NCE-containing material comprises a barrier formulation.. The invention further includes articles of manufacture, comprising the NCE-containing materials, formed articles made therefrom, and methods of their manufacture.
Owner:SOANE MATERIALS LLC
Paper, pulp and method of treating the same
ActiveCN118621605BWashing/displacing pulp-treating liquorsPulp de-wateringWhite waterIndustrial engineering
The application provides a paper product, a paper pulp and a processing method thereof; the processing method comprises the following steps: multiple pulp washing; using a pulp squeezing machine to perform pulp beating, and conveying white water obtained by the pulp beating to other pulp lines; and inputting the pulp after the pulp beating into a pulp feeding tank. The processing method of the paper pulp provided by the application utilizes the surplus capacity of the pulp squeezing machine of the existing pulp beating workshop in the factory, improves the pulp washing efficiency through process flow technical improvement of part of the pipelines and equipment, improves the pulp cleanliness through the process technical method, improves the pulp COD, PCD and odor value, improves the pipeline pulp feeding capacity, meets the quality and pulp demand of the paper machine for the chemical pulp, and further improves the proportion of the chemical pulp, and reduces the comprehensive cost per ton of paper.
Owner:GUANGXI JINGUI PULP PAPER