CN100406141C - Selecting technology during preparing grass material - Google Patents
Selecting technology during preparing grass material Download PDFInfo
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- CN100406141C CN100406141C CNB2007101475544A CN200710147554A CN100406141C CN 100406141 C CN100406141 C CN 100406141C CN B2007101475544 A CNB2007101475544 A CN B2007101475544A CN 200710147554 A CN200710147554 A CN 200710147554A CN 100406141 C CN100406141 C CN 100406141C
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Abstract
The present invention provides grass material sieving process, which includes the following steps: 1. cutting grass material excluding reed into 20-80 mm long chopped pieces and dedusting; 2. sieving; and 3. storing the sieved grass material in material storing storehouse. The grass material sieving process can eliminate most of grass knots likely to form yellow spot in the made paper, and this can reduce the alkali consumption in the papermaking process.
Description
Technical field
The present invention relates to the screening technology in the grass raw material melting process.
Background technology
The existing grass raw material flow process of getting the raw materials ready roughly comprises section, screening and three main operations of dedusting, and what the root with dogstail that the factory that has also tried one's best before section, fringe, leaf, go rotten part and silt particle etc. were done the best removes.The purpose of section is for the dogstail raw material is cut off, dogstail raw material after the processing can feed chaffcutter continuously and be cut into blade, then with blade and impurity substances thereof, delivering to screening machine by belt conveyor screens, existing screening is generally carried out in drum sieve and/or flat screen, on cylinder and/or plansifter, grain grass joint is the sieve aperture by 12mm then, fall the below, dust, the grass bits wait lighter material then in company with air-flow, by being positioned at two arcuation sieve plates (sieve aperture 1.5-2mm) of top, selection by winnowing chamber, overflow from top, selection by winnowing chamber, raw material after the screening carries out dedusting at dust removal machine, existing dedusting is generally carried out in air exhauster and cyclone separator, blade after the screening is told grain by cyclopneumatic separator, and is isolated loose smalls and dust by concentrated extraction the out of dust grain of air exhauster with the chaffcutter top and after screening dedusting.Yet by above-mentioned getting the raw materials ready, but be difficult to most of remove the burring joint, thus after boiling, also need to remove by screening or other measures, otherwise the phenomenon of macula lutea will appear occurring in the paper pulp finished product.
In " pulping process and equipment " book that in October, 2000, the China Light Industry Press published, the 3rd joint in the chapters and sections of getting the raw materials ready has been narrated getting the raw materials ready of rice wheat straw, method of getting the raw materials ready and the flow process of its semilate rice wheat straw are as follows: at first be that the rice wheat straw is through preliminary treatment, remove the root in the material as far as possible, leaf, fringe, mildew and rot part, silt etc., forage after then will handling feeds chaffcutter continuously uniformly by conveyer belt, be cut into blade, then with blade and impurity wind send or conveyer belt is delivered to screening installation, remove sandstone, the impurity that grain etc. are heavier, then enter cleaner, and isolate smalls dust etc. than light impurity.Screening dedusting common equipment of the prior art has rotary strainer, oscillating flat sieve, and deduster of the prior art has double cone deduster and cyclone dust collectors.In reed and awns stalk pulping process, the technological process that dry raw material preparation is produced is as follows: at first carry out preliminary treatment, then carry out blade, again the blade that cuts out is delivered to cyclone separator with air blast, remove low-density impurity such as reed film, reed end and dust, isolate heavier impurity such as careless fringe, sandstone again with screening machine.Existing screening machine is a drum sieve.
According to the quality difference of needed paper, technological process is also different, if make bleach chemical pulp, the paper that the quality of production is had relatively high expectations then adopts following flow process: dogstail chaffcutter → rotary strainer → plansifter → cyclone separator → disc holder → boiling.Yet in the prior art by can't be in the blade that obtains after getting the raw materials ready with strap wherein, remove more greatly, because the existence of grass joint, so the blade that adopts the method for getting the raw materials ready of prior art to obtain passes through pulping by cooking again, macula lutea appears in slurry easily that obtain, and for prior art after boiling, also need to remove impurity such as burring joint by screening or other measure, thus the macula lutea phenomenon of the slurry that makes.The invention provides the screening technology in the grass raw material melting process, just be based on above problems of the prior art and launching.
Summary of the invention
The technology that the purpose of this invention is to provide the screening in a kind of preparing grass material process,
The invention provides the technology of the screening in a kind of preparing grass material process, wherein:
A.. the dogstail raw material is cut off, the blade that obtains after cutting off is carried out dust removal operation, obtain the blade after the dedusting,
B. the interior sieve basket that the blade after the dedusting is sent into drum sieve carries out scalping, the strap that is mixed with in the blade after the dedusting is removed,
C. the blade that sifts out from the interior sieve basket of the described drum sieve outer sieve basket that enters drum sieve carries out dusting cover, is mixed with fine impurities in the removal blade.
The present invention also provides the technology of the screening in a kind of preparing grass material process, wherein, also the blade that obtains after cutting off is imposed impulsive force, frictional force and grinding pressure and rub in step a, and the blade that will obtain after will rubbing again carries out dust removal operation.
The blade length of wherein handling in screening is 20--80mm.
In the prior art to the screening technology in the melting process of common dogstail raw material all be placed on the section after carry out, after screening, the blade that cuts is carried out dedusting again, since in the prior art in rupturing operation, just the dogstail raw material is cut, qualified blade length is 20--50mm, so also be difficult to the impurity that will wherein be mixed with and the Impurity removal in the dogstail raw material stalk in the screening of traditional melting process operation.For the blade of length more than 50mm, impurity that prior art more can't will wherein be mixed with in the screening operation and the Impurity removal in the dogstail raw material stalk.
Screening technology in the melting process that the present invention adopts and prior art inequality, this is because the present invention is cutting off and rubbing in the operation, not only dogstail raw material length direction is cut off, and the stalk of the blade after will cutting off and straw impose impulsive force, frictional force and grinding pressure and rub expansion, make that the marrow in the blade is come out, grass joint and the marrow be convenient to like this in being mixed in blade are removed.Can adopt bark grinding mill of the prior art to realize the cut-out of dogstail raw material and rub in the present invention.
Dogstail raw material of the present invention is a kind of in straw, wheat straw or the cotton stalk, and moisture content is below 22%.
The present invention is applicable to dry raw material preparation, and the moisture content of dogstail raw material wherein is lower than 22%.Moisture is unfavorable for cut-out, rubbing and the sorting of raw material greater than this value.
By the interior sieve basket of drum sieve, the strap in the impurity that is mixed with in the blade after the dedusting is removed, and by the outer sieve basket of drum sieve, enters the impurity middle period, sheath, fringe, marrow, grass joint, the silt particle that are mixed with in the outer blade that sieves in the basket of drum sieve and is removed.
The perforate of interior sieve basket is the square sieve aperture of 30 * 30mm.
The perforate of outer sieve basket is that diameter is the round sieve of 4-6mm.
Drum sieve angle with respect to the horizontal plane is 6-12 °.
Drum sieve angle with respect to the horizontal plane is 8-10 °.
Screening technology has 110-250 branch clock time altogether.
Screening technology has 150-200 minute altogether.
By drum sieve, the impurity that is mixed with in the blade after the dedusting has reduced 3%-7%.
By described screening operation, the blade that cuts off is admitted to the interior sieve basket place of the inlet on the drum sieve, its perforate is the square sieve aperture of 30 * 30mm, the rotating speed of interior sieve basket is 5-12 rev/min, blade enters wherein, the sieve aperture of sieve basket entered outer sieve basket in length was passed under spiral promotes less than the blade of 80mm and fine impurities, and strap and length are approximately stopped from an interior sieve basket sieve aperture greater than the blade of 80mm, and deliver to the exit discharge by spiral.
The sieve basket no longer selects for use sieve aperture of the prior art to be circular sieve in the drum sieve of the present invention, is foursquare square hole screen but select perforate.
Wherein: by described screening of sieving basket in drum sieve, the qualified blade of screening and fine impurities are at first sieved basket on the drum sieve, and its perforate is a sieve basket outside the square sieve aperture of 30 * 30mm enters.Strap is shifted the impurities removal exit with growing grass onto by an interior sieve basket spiral.Thereby the interior sieve basket at drum sieve has been finished qualified blade, just length less than the blade of 80mm and strap and length greater than the separation screening between the blade of 80mm.
Sieve basket outside then the blade that sifts out from interior sieve basket enters, the sieve diameter of outer sieve basket is 4-6mm, the percent opening of outer sieve basket is 65--72%, because the rotary speed of the outer sieve basket of drum sieve is fast, angular speed reaches 18-21 rev/min.The high speed rotation of sieve basket outside down, the leaf that is mixed with in the blade, sheath, fringe, marrow, grass joint, silt particle are owing to self is in light weight, so the high speed rotation of sieve basket outside down, be more convenient for being screened in a large number from the sieve aperture of the outer sieve basket of drum sieve, the blade after the screening is piled by spiral and is discharged to the next stage drum sieve to the material outlet place.Can directly not carry out boiling in the screening of carrying out the next stage drum sieve yet.Therefore finished qualified blade and the impurity that wherein is mixed with at the outer sieve basket of drum sieve: as leaf, sheath, fringe, marrow, grass save, the separating of silt particle.
Because drum sieve itself and horizontal plane have a certain degree, so when drum sieve rotates, locomotivity before blade is oriented, the inside and outside sieve basket of drum sieve all has spiral simultaneously, blade is owing to it is in light weight, so in the moving other end exit that slides to drum sieve down of the heap of spiral.
Unlike the prior art be, the present invention is in the screening operation that the dogstail raw material is got the raw materials ready, the length 20---80mm of the qualified blade of handling of raw material, the inventor is through test of many times, discovery is in the process of cutting off and rubbing, 30 * 30 square holes can sift out qualified blade, and the function that can get rid of useless strap is arranged, and sneaking into impurity such as the silt particle in the blade, careless joint and the leaf that rubs, sheath, fringe, marrow is the hole discharge of 4-6mm by diameter.
Because the raw material before entering the screening installation screening at first passes through dust removal operation, so the impurity of being convenient to remove of light weight is removed in dust removal operation, the impurity content of the front and back in screening installation has reduced 2%-7%, for the grass that is mixed with in blade joint, marrow is this may cause after the impurity of paper macula lutea in this operation, be able to a large amount of removals, thereby for reaching identical pulp brightness, the few paper quality of dust point improves.
Description of drawings
The schematic diagram of Fig. 1 drum sieve.
The side view of Fig. 2 drum sieve.
Sieve basket schematic diagram in Fig. 3 drum sieve.
Fig. 4 drum sieve sieves a basket schematic diagram outward.
The specific embodiment
Following embodiment is used to explain the present invention but does not limit the present invention
Referring to Fig. 1, the straw length that to get 5 tons of moisture content be 10%-22% is the segment of 300-350mm, cut into slices, be cut into blade that length is 20-80mm and its grass joint rubbed and come, section and rub after the blade that obtains be transported into and carry out dedusting in the cyclone separator, the little dust of density in the blade, the grass bits, fringe is extracted out from separator, blade can not be drawn out of owing to having bigger weight, then be transported in the drum sieve and screen, the impurity content that enters in the blade of drum sieve is 18%, drum sieve tilts to place with respect to the level ground, and tilt 6 ° between the horizontal plane, the sieve aperture of sieve basket is square sieve aperture on the drum sieve, the length of side is 30 * 30mm, rotating speed is 10 rev/mins, the sieve aperture of outer sieve basket is a circular hole on the drum sieve, the rotating speed of outer sieve basket is 18-21 rev/min, blade after the dedusting is at first entering the interior sieve basket 2 of drum sieve, when drum sieve sways, the qualified blade interior sieve basket by drum sieve enters outer sieve basket under spiral promotes, strap in the impurity that is mixed with in the blade after the dedusting and the length that is mixed with in blade are stopped greater than the sieve aperture of 80mm blade at interior sieve basket, and under spiral promotes, deliver to the exit and discharge, the result shows: strap, at interior sieve basket elimination factor more than 96%.Because outer sieve basket has big velocity of rotation, and on the outer sieve basket diameter to be arranged be the circular hole of 6mm, is removed so enter the impurity middle period, sheath, fringe, marrow, grass joint, the silt particle that are mixed with in the blade in the outer sieve basket.The screening operation was carried out altogether 110-120 minute, and the blade that then enters outer sieve basket enters the belt conveyer scale weighing under the promotion of spiral, enter rotary spherical digester at last and carry out boiling.The content of impurity 18% is reduced to 14% before screen, then carry out the operation of shove, washing, bleaching, the result shows that when obtaining whiteness be in the paper pulp of 72%ISO, the minimizing 2% of used alkali lye during the blade boiling, yet adopt existing dry raw material preparation, the index of paper is significantly improved, and has realized the fine fodder boiling.
Referring to Fig. 1, get 5 tons of moisture content for cutting into slices less than 10% wheat straw and rubbing, be cut into the segment that length is 20--50mm, and require can rubbing of wheat straw to come, the wheat straw sheet that obtains after the section is transported into and carries out dedusting in the cyclone separator, the little dust of density in the blade, the grass bits, fringe is extracted out from separator, the wheat straw sheet can not be drawn out of owing to itself having bigger weight, then be transported in the drum sieve and screen, the impurity content that enters in the wheat straw sheet of drum sieve is 20%, drum sieve tilts to place with respect to the level ground, and tilt 8 ° between the horizontal plane, the sieve aperture of the interior sieve basket on the drum sieve of drum sieve is square sieve aperture, sieve aperture is 30 * 30mm, it is 4mm that cylinder sieves basket sieve aperture outward, blade after the dedusting is at first entering the interior sieve basket 2 of drum sieve, the rotating speed of interior sieve basket is 10 rev/mins, the rotating speed of outer sieve basket remains on 21 rev/mins, when drum sieve sways, under spiral promotes, enter and sieve basket 1 outward less than the blade of the 50mm interior sieve basket by drum sieve, strap in the impurity that is mixed with in the blade after the dedusting and the length that is mixed with in blade are stopped greater than the sieve aperture of 80mm blade at interior sieve basket, and under spiral promotes, deliver to the exit and discharge, because wheat straw sheet itself is in light weight, so when drum sieve sways, from the sieve aperture of 30 * 30mm, screen, be mixed in the wheat straw sheet weight simultaneously and beat again the impurity of band etc. when cylinder sways, discharge from discharging opening one side of drum sieve, the result shows: strap, at interior sieve basket elimination factor more than 96%.Because outer sieve basket has big velocity of rotation, and on the outer sieve basket diameter being arranged is the circular hole of 4mm, the outer sieve basket that tiny impurity and qualified blade enter drum sieve screens, the leaf that is mixed with in tiny impurity and the blade, sheath, fringe, marrow, the grass joint, be removed in the outer again sieve basket of silt particle, the screening operation was carried out altogether 120-150 minute, the result shows in the screening operation, the content of the impurity in the blade 20% is reduced to 15% before screen, in order to reach the effect that better screening separates, the blade that had sieved can be screened by another or same drum sieve once more, the wheat straw sheet that sifts out from drum sieve is sent into rotary spherical digester and is carried out boiling, then carry out shove, washing, the operation of bleaching, the result shows that when obtaining whiteness be in the paper pulp of 78%ISO, the concentration of used alkali lye is 12% during boiling, yet adopt existing dry raw material preparation, realized that the fine fodder boiling has improved the yield of slurry, on average improves 4% point.5 tons of blades obtain the paper pulp that whiteness is ISO78% in boiling after shove, the washing, and the quality of paper pulp obviously improves, and weight in wet base can reach 2.2-2.4g.
Embodiment 3
The cotton stalk of getting moisture content and being below 18% is cut into slices, be cut into the segment that length is 20mm, the cotton stalk sheet that obtains after the section is transported into and carries out dedusting in the cyclone separator, the little dust of density in the cotton stalk sheet, the grass bits, fringe is extracted out from separator, cotton stalk can not be drawn out of owing to having bigger weight, then be transported in the drum sieve and screen, the impurity content that enters in the cotton stalk of drum sieve is 22%, drum sieve tilts to place with respect to the level ground, and tilt 10 ° between the horizontal plane, blade after the dedusting is at first entering the interior sieve basket 2 of drum sieve, the rotating speed of interior sieve basket is 12 rev/mins, the rotating speed of outer sieve basket remains on 20 rev/mins, when drum sieve sways, the interior sieve basket of blade by drum sieve enters and sieves basket 1 outward under spiral promotes, strap in the impurity that is mixed with in the blade after the dedusting and the length that is mixed with in blade are stopped greater than the sieve aperture of 80mm blade at interior sieve basket, and under spiral promotes, deliver to the exit and discharge, the result shows: strap, at interior sieve basket elimination factor more than 96%.Because outer sieve basket has big velocity of rotation, and on the outer sieve basket diameter to be arranged be the circular hole of 5mm, is removed so enter the impurity middle period, sheath, fringe, marrow, grass joint, the silt particle that are mixed with in the blade in the outer sieve basket.The screening operation was carried out altogether 110-120 minute, and the blade that then enters outer sieve basket enters the belt conveyer scale weighing under the promotion of spiral, enter rotary spherical digester at last and carry out boiling.The screening operation was carried out altogether 150-200 minute, collect two kinds of outsiftings in the sieve aperture respectively, the result shows: the content of impurity 23% is reduced to 16% before screen, the boiling that can not be used in a large number of sifting out in rectangular mesh gets cotton stalk head, the silt particle that weight is bigger, pectin, tiny cotton stalk is discharged from the 4mm hole, the face stalk that will sift out from drum sieve is sent into rotary spherical digester and is carried out boiling, then carry out shove, washing, the operation of bleaching, the result shows that when obtaining whiteness be in the paper pulp of 80%ISO, yet adopt existing dry raw material preparation, cotton stalk pulp has realized that the fine fodder boiling has improved the yield of slurry, on average improves 4% point.
Embodiment 4
Moisture content is that the cotton stalk of 10%-20% is cut into slices, be cut into the segment that length is 20-40mm, the cotton stalk sheet that obtains after the section is transported into and carries out dedusting in the cyclone separator, the little dust of density in the cotton stalk sheet, the grass bits, fringe is extracted out from separator, the cotton stalk sheet can not be drawn out of owing to having bigger weight, then be transported in the drum sieve and screen, the impurity content that enters in the blade of drum sieve is 23%, drum sieve tilts to place with respect to the level ground, and tilt 12 ° between the horizontal plane, the rotating speed of the interior sieve basket of drum sieve remains on 5 rev/mins, the rotating speed of outer sieve basket remains on 21 rev/mins, blade after the dedusting is at first entering the interior sieve basket 2 of drum sieve, the rotating speed of interior sieve basket is 12 rev/mins, when drum sieve sways, the interior sieve basket of blade by drum sieve enters and sieves basket 1 outward under spiral promotes, because the cotton stalk sheet itself that cuts is in light weight, cross-sectional area is little, so when drum sieve sways, from the sieve aperture of the interior empty 30 * 30mm that sieves, screen, the heavier cotton stalk head impurity of strap in the impurity that is mixed with in the blade after the dedusting and bulky weight is stopped at the sieve aperture of interior sieve basket, and under spiral promotes, deliver to the exit and discharge, the result shows: strap, at interior sieve basket elimination factor more than 96%.Because outer sieve basket has big velocity of rotation, and on the outer sieve basket diameter to be arranged be the circular hole of 4mm, is removed so enter the pectin of the impurity middle period, sheath, fringe, marrow, careless joint, silt particle and the cotton stalk skin that are mixed with in the blade in the outer sieve basket.From the sieve aperture of the 4mm of outer sieve basket, screen and discharge from discharge gate, the screening operation was carried out altogether 200-250 minute, collect two kinds of outsiftings in the sieve aperture respectively, the result shows that content in the outsifting in the sieve aperture of 30 * 30mm is with respect to raising has been arranged before the screening, the content of impurity 22% is reduced to 16% before screen, the impurity that sifts out in the sieve aperture of diameter 4mm mainly is the pectin of cotton stalk bark, cotton stalk is less than cotton stalk and the bigger silt particle of weight of 4mm, in order to reach better separating effect, a drum sieve can also be installed after former drum sieve more once more, the cotton stalk sheet that will sift out from first drum sieve enters second drum sieve and screens once more, after second drum sieve screening, impurity content in the cotton stalk sheet can be reduced to 14%, the cotton stalk sheet that will sift out from drum sieve is sent into rotary spherical digester and is carried out boiling, then carry out shove, washing, the operation of bleaching, the result shows that when obtaining whiteness be in the paper pulp of 78%ISO, yet adopt existing dry raw material preparation, cotton stalk pulp has realized that the fine fodder boiling has improved the yield of slurry, on average improves 4% point.
Claims (9)
1. the technology of the screening in the preparing grass material process comprises:
A.. the dogstail raw material is cut off, the blade that obtains after cutting off is carried out dust removal operation, obtain the blade after the dedusting,
B. the interior sieve basket that the blade after the described dedusting is sent into drum sieve carries out scalping, the strap that is mixed with in the blade after the described dedusting is removed,
C. the blade that sifts out from the interior sieve basket of the described drum sieve outer sieve basket that enters drum sieve carries out dusting cover, is mixed with fine impurities in the removal blade;
It is characterized in that described drum sieve angle with respect to the horizontal plane is 6-12 °; The perforate of sieve basket is the square sieve aperture of 30 * 30mm in described; The perforate of outer sieve basket is that diameter is the round sieve of 4-6mm.
2. technology according to claim 1 is characterized in that, also the blade that obtains after cutting off is imposed impulsive force, frictional force and grinding pressure and rub in described step a, and the blade that will obtain after will rubbing again carries out dust removal operation.
3. technology according to claim 1 is characterized in that, the blade length of handling in described screening is 20--80mm.
4. technology according to claim 1 is characterized in that described dogstail raw material is a kind of in straw, wheat straw or the cotton stalk, and moisture content is below 22%.
5. technology according to claim 1 is characterized in that described fine impurities comprises leaf, sheath, fringe, marrow, grass joint, silt particle.
6. according to claim 1 or 2 or 3 described technologies, it is characterized in that described drum sieve angle with respect to the horizontal plane is 8-10 °.
7. according to claim 1 or 2 or 3 described technologies, it is characterized in that described screening technology has 110-250 branch clock time altogether,
8. technology according to claim 7 is characterized in that described screening technology has 150-200 minute altogether.
9. technology according to claim 1 is characterized in that by drum sieve the impurity that is mixed with in the blade after the dedusting has reduced 3%-7%.
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| CNB2007101475544A CN100406141C (en) | 2007-08-27 | 2007-08-27 | Selecting technology during preparing grass material |
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| CNB2007101475544A CN100406141C (en) | 2007-08-27 | 2007-08-27 | Selecting technology during preparing grass material |
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| CN100406141C true CN100406141C (en) | 2008-07-30 |
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| AU2013204344B2 (en) * | 2013-04-12 | 2016-02-04 | Anaeco Limited | Apparatus and Method for Solid Waste Separation |
| CN106031897B (en) * | 2015-03-20 | 2021-02-09 | 山东泉林纸业有限责任公司 | Material preparation system and method for continuous cooking |
| CN106758446B (en) * | 2016-11-17 | 2018-03-06 | 鲁洪飞 | A kind of environment friendly pulping process |
| CN106988138B (en) * | 2017-04-10 | 2018-10-30 | 吉林省民昌农业科技有限公司 | A kind of complete set of equipments of Physical extraction corn stalk fiber |
| CN114405801B (en) * | 2022-01-19 | 2023-09-15 | 黑龙江八一农垦大学 | Grain screening device and method |
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| US3756406A (en) * | 1970-07-14 | 1973-09-04 | Us Agriculture | Grain cleaner |
| US4282090A (en) * | 1980-06-20 | 1981-08-04 | St. Louis Conveyor Company Inc. | Rotary sifting device |
| CN2325122Y (en) * | 1997-12-30 | 1999-06-23 | 金殿春 | Double drum grain screen machine with roll spiral agitator |
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| US3756406A (en) * | 1970-07-14 | 1973-09-04 | Us Agriculture | Grain cleaner |
| US4282090A (en) * | 1980-06-20 | 1981-08-04 | St. Louis Conveyor Company Inc. | Rotary sifting device |
| CN2325122Y (en) * | 1997-12-30 | 1999-06-23 | 金殿春 | Double drum grain screen machine with roll spiral agitator |
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Effective date of registration: 20101221 Address after: 252800 No. 15 Guangming East Road, Gaotang County, Shandong Province Patentee after: Shandong Tralin Paper Co., Ltd. Address before: Shandong province Gaotang County Road 252800 Street No. 26 Patentee before: Shandong Qualin Paper Industry Co., Ltd. |
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Owner name: SHANDONG FUYIN PAPER MAKING ENVIRONMENTAL PROTECTI Free format text: FORMER OWNER: SHANDONG HERUN PULP AND PAPER CO., LTD. Effective date: 20110125 |
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Free format text: CORRECT: ADDRESS; FROM: 252800 NO. 15, GUANGMING EAST ROAD, GAOTANG COUNTY, SHANDONG PROVINCE TO: 252800 NO. 26, GUANDAO STREET, GAOTANG COUNTY, SHANDONG PROVINCE |
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Effective date of registration: 20110125 Address after: Shandong province Gaotang County Road 252800 Street No. 26 Patentee after: Shandong Fuyin Paper Making Environmental Protection Technology Co., Ltd. Address before: 252800 No. 15 Guangming East Road, Gaotang County, Shandong Province Patentee before: Shandong Tralin Paper Co., Ltd. |
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Denomination of invention: Selecting technology during preparing grass material Effective date of registration: 20140211 Granted publication date: 20080730 Pledgee: China Development Bank Co Pledgor: Shandong Quanlin Paper Industry Co. Ltd.|Shandong Fuyin Paper Environmental Technology Co. Ltd. Registration number: 2014990000101 |
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