CN101666053A - Production method of chemi-mechanical pulp - Google Patents
Production method of chemi-mechanical pulp Download PDFInfo
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- CN101666053A CN101666053A CN200910192225A CN200910192225A CN101666053A CN 101666053 A CN101666053 A CN 101666053A CN 200910192225 A CN200910192225 A CN 200910192225A CN 200910192225 A CN200910192225 A CN 200910192225A CN 101666053 A CN101666053 A CN 101666053A
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Abstract
The invention provides a production method of chemi-mechanical pulp, which comprises the following steps: first pulping pulpwood and defibering and bleaching, thus obtaining defibered pulp; and then screening and thickening the defibered pulp, and conducting secondary thick grinding, thus obtaining single-fiberized chemi-mechanical pulp and directly delivering the single-fiber chemi-mechanical pulp to a papermaking shop. The production method of chemi-mechanical pulp reduces lumps in the pulp, effectively reduces power consumption during secondary thick grinding, reduces abrasion of a mill stone and improves the service life thereof, also obviously improves the pulping effect of the pulp, and leads to high single-fiberization rate and higher pulping degree of the pulp; and an adjusting tower is adopted in the production method for storing and thickening the pulp, and simultaneously the pulp can be further leached, therefore, the concentration of the pulp can be better controlled and can be even in the process, thus facilitating the follow-up working procedures.
Description
Technical field
The present invention relates to pulp technology for making paper, particularly a kind of production method of chemi-mechanical pulp.
Background technology
Pulping and paper-making is one of important industry of Chinese national economy, the paper of China's production since nineteen ninety-two and the output and the consumption figure Jun Ju world front three thereof of cardboard.The manufacturing of change machine slurry is the important process of papermaking, and at present, the production of change machine slurry generally all is to adopt roller type paste mill that raw materials such as wood chip are carried out defibrination, and adding is simultaneously floated agent and bleached; Dense mill during dense disc mill carries out in then the slurry that obtains being delivered to, or deliver to high concentration plate mill and carry out high dense mill; At last that the beating degree that obtains is higher slurry is directly delivered to machine room.This method is simple, but paper pulp raw material through the thread rolling of roller mill, its block structure is more, dense mill or high dense mill in directly carrying out, this has just strengthened the defibrination difficulty, brings power consumption big easily, the problem that abrasive disk abrasion is big, service life is short, simultaneously, in the single fiber rate of the slurry that obtains behind dense mill or the high dense mill also low, its beating degree usually is difficult to reach designing requirement.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the production method of chemi-mechanical pulp that a kind of refining effect is good, defibrination efficient is high is provided.
The present invention is achieved through the following technical solutions: a kind of production method of chemi-mechanical pulp, and earlier paper pulp raw material is rubbed with the hands mill and discongested bleaching, the slurry that obtains discongesting; It is dense then the slurry of discongesting to be screened accent, and dense mill in carrying out again obtains the change machine slurry of single fiberization and directly delivers to machine room.
Above-mentioned production method of chemi-mechanical pulp is specially:
(1) adopt alkali that the wood chip as paper pulp raw material is carried out preimpregnation, then the wood chip and the steam of preimpregnation are together sent into stranding mill in the stranding grinding machine, float the agent regulating system simultaneously and float agent, paper pulp raw material is carried out first one-Step bleach to rubbing the grinding machine adding with the hands, its black liquor is discharged system, and slurry is delivered to high dense fluffer;
(2) high dense fluffer is discongested the slurry of rubbing mill with the hands and obtaining and is broken up, the slurry that obtains discongesting, and deliver to and regulate tower and store;
(3) float the adding in regulating tower of agent regulating system and float agent, the slurry of having discongested is further bleached, add dilution water simultaneously slurry is diluted;
(4) by the one-level screen tray slurry is carried out scalping, setting concentration according to slurry, the screened stock that scalping obtains is delivered to concentrator and is concentrated or deliver to the concentration adjustment container and dilute, and the thick slag that scalping obtains is delivered to and rubbed grinding machine with the hands and paper pulp raw material is together rubbed mill with the hands;
(5) dense mill during dense disc mill carried out during process screened stock concentrated or dilution was delivered to obtains the slurry of single fiberization and delivers to the secondary screen tray;
(6) after the secondary screen tray carried out fine screen to the slurry of single fiberization, the change machine slurry that obtains was copied paper and is directly delivered to machine room by sending, and its screening reject is sent the adjusting tower back to, so far the production of finishing machine slurry.
Above-mentioned production method of chemi-mechanical pulp specifically also can be:
(1) adopt alkali that the wood chip as paper pulp raw material is carried out preimpregnation, then the wood chip of preimpregnation and steam are together sent into to rub with the hands in the grinding machine and rub mill with the hands, float the agent regulating system simultaneously and add and float agent, paper pulp raw material is carried out one-Step bleach just to rubbing grinding machine with the hands, its black liquor is discharged system, and slurry is delivered to the adjusting tower;
(2) regulate tower and store slurry, float the adding in regulating tower of agent regulating system simultaneously and float agent, slurry is further bleached, then slurry is delivered to high dense fluffer;
(3) high dense fluffer is discongested the slurry that obtains and is broken up, the slurry that obtains discongesting, and deliver to screen tray;
(4) by screen tray the slurry of having discongested is screened, the thick slurry that obtains is delivered to dense disc mill in the one-level, and the screened stock that obtains is delivered to dense disc mill in the secondary;
(5) in the one-level dense disc mill to thick slurry carry out elementary in behind the dense mill, the slurry that obtains is delivered to dense disc mill in the secondary;
(6) dense mill during the screened stock that obtains of slurry that dense disc mill obtains dense mill in elementary in the secondary and screening carries out further obtains the change machine slurry of single fiberization, and copies paper and directly deliver to machine room, the production of finishing machine slurry so far by sending.
Described adjusting tower is located at high dense fluffer below or top, from top to bottom, regulates tower and comprises the storage compartment that connects successively and transfer dense chamber; Described storage compartment and transfer the junction of dense chamber to be provided with the cutting agency that prevents that high consistency stock is built on stilts, the longitudinal cross-section of the dense chamber of described accent are and are beneficial to the chamfer trapezoidal shape that slurry is sent, and transfer dense chamber one side to be provided with the dilution water entrance point.
Described cutting agency comprises rake arm and rotating driving device thereof, and the rake arm is located at the bottom of described storage compartment, fixedlys connected with the main shaft of rotating driving device in rake arm bottom, and the surface that the rake arm contacts with slurry is provided with a plurality of scraper plates.
The dense chamber of described accent one side also is provided with and guarantees the uniform high-speed thruster of slurry concentration.
When described adjusting tower used, the stranding mill entered the storage compartment after too high dense fluffer is discongested the slurry of breaing up or only rubbed the slurry that grinds with the hands through the stranding grinding machine by the charging aperture of regulating the cat head end; After starting the cutting agency of being located at the bottom, storage compartment, rotating driving device drives the rotation of rake arm, and the scraper plate that harrow the arm surface this moment constantly scrapes slurry in rotary course, slurry is evenly delivered to from the discharging opening of storage compartment transferred dense chamber, prevents that high consistency stock is built on stilts; Slurry enters when transferring dense chamber, if slurry needs dilution, then adds dilution water from the dilution water entrance point of transferring dense chamber one side, and starts high-speed thruster, makes the slurry concentration after the dilution even, and the slurry after the dilution is sent by the discharging opening of transferring dense chamber at last.
Compared with prior art, the present invention has following beneficial effect:
1, in the of the present inventionization machine slurry production process, paper pulp raw material is discongested earlier and is broken up and screen through after rubbing mill with the hands, dense disc mill carries out defibrination in just delivering to then, and this has just reduced the block in the slurry, the power consumption of dense mill in effectively reducing, reduce the wearing and tearing of mill, improve its service life; The beating results of slurry also obviously improves simultaneously, and the slurry pulping degree that obtains is higher.
2, in the of the present inventionization machine slurry production process, dense mill in slurry process postsearch screening or the secondary, the single fiber rate height of the feasible slurry that obtains at last, thus improve its beating degree.
3, in the of the present inventionization machine slurry production process, it is dense to adopt the adjusting tower that slurry is stored accent, can also further bleach slurry simultaneously, and this process can be controlled the concentration of slurry preferably and make its concentration even, helps the carrying out of follow-up operation.
Description of drawings
Fig. 1 is the schematic flow sheet of this production method of chemi-mechanical pulp embodiment one.
Fig. 2 is the schematic flow sheet of this production method of chemi-mechanical pulp embodiment two.
Fig. 3 is the structural representation that is used for the adjusting tower of this production method of chemi-mechanical pulp.
Fig. 4 is a structure vertical view of regulating rake arm in the tower.
Fig. 5 is the structural front view of regulating rake arm in the tower.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment one
A kind of production method of chemi-mechanical pulp of present embodiment as shown in Figure 1, carries out defibrination and discongests bleaching, the slurry that obtains discongesting paper pulp raw material earlier; It is dense then the slurry of discongesting to be screened accent, and dense mill in carrying out again obtains the change machine slurry of single fiberization and directly delivers to machine room.Be specially:
(1) adopt alkali that the wood chip as paper pulp raw material is carried out preimpregnation, then the wood chip of preimpregnation and steam are together sent into to rub with the hands in the grinding machine and rub mill with the hands, float the agent regulating system simultaneously and add and float agent, paper pulp raw material is carried out one-Step bleach just to rubbing grinding machine with the hands, its black liquor is discharged system, and slurry is delivered to high dense fluffer;
(2) high dense fluffer is discongested the slurry of rubbing mill with the hands and obtaining and is broken up, the slurry that obtains discongesting, and deliver to and regulate tower and store;
(3) float the adding in regulating tower of agent regulating system and float agent, the slurry of having discongested is further bleached, add dilution water simultaneously slurry is diluted;
(4) by the one-level screen tray slurry is carried out scalping, setting concentration according to slurry, the screened stock that scalping obtains is delivered to concentrator and is concentrated or deliver to the concentration adjustment container and dilute, and the thick slag that scalping obtains is delivered to and rubbed grinding machine with the hands and paper pulp raw material is together rubbed mill with the hands;
(5) dense mill during dense disc mill carried out during process screened stock concentrated or dilution was delivered to obtains the slurry of single fiberization and delivers to the secondary screen tray;
(6) after the secondary screen tray carried out fine screen to the slurry of single fiberization, the change machine slurry that obtains was copied paper and is directly delivered to machine room by sending, and its screening reject is sent the adjusting tower back to, so far the production of finishing machine slurry.
Wherein, being used for the slurry storage transfers dense adjusting tower to be located at high dense fluffer below or top, its structure as shown in Figure 3, from top to bottom, regulating tower comprises the storage compartment 1 that connects successively and transfers dense chamber 2, storage compartment 1 and transfer the junction of dense chamber 2 to be provided with the cutting agency that prevents that high consistency stock is built on stilts wherein transfers the longitudinal cross-section of dense chamber 2 to be and is beneficial to the chamfer trapezoidal shape that slurry is sent, and transfers dense chamber 2 one sides to be provided with dilution water entrance point 3.
In the said structure, cutting agency comprises rake arm 4 and rotating driving device 5 thereof, and rake arm 4 is located at the bottom of storage compartment 1, fixedlys connected with the main shaft 6 of rotating driving device 5 in rake arm 4 bottoms, as shown in Figure 4 and Figure 5, the surface that contacts with slurry of rake arm 4 is provided with a plurality of scraper plates 7.Transfer dense chamber 2 one sides also to be provided with and guarantee the uniform high-speed thruster 8 of slurry concentration.
When above-mentioned adjusting tower uses, (wherein the direction of arrow is the flow direction of slurry) as shown in Figure 3, thread rolling enters storage compartment 1 after too high dense fluffer is discongested the slurry of breaing up by the charging aperture of regulating the cat head end; After the cutting agency of 1 bottom, storage compartment is located in startup, rotating driving device 5 drives 4 rotations of rake arm, the scraper plate 7 that harrow arm 4 surfaces this moment constantly scrapes slurry in rotary course, make slurry evenly from the storage compartment 1 discharging opening deliver to and transfer dense chamber 2, prevent that high consistency stock is built on stilts; Slurry enters when transferring dense chamber 2, if slurry needs dilution, then adds dilution waters from the dilution water entrance point 3 of transferring dense chamber 2 one sides, and starts high-speed thruster 8, makes the slurry concentration after the dilution even, and the slurry after the dilution is sent by the discharging opening of transferring dense chamber 2 at last.
In the change machine of the present embodiment slurry production process, rubbing grinding machine with the hands, to adopt model be the roller type paste mill of SM80, and it is the fluffer of HM50 that high dense fluffer adopts model, in dense disc mill to adopt model be the disc mill of ZDPM500.
Embodiment two
A kind of production method of chemi-mechanical pulp of present embodiment as shown in Figure 2, carries out defibrination and discongests bleaching, the slurry that obtains discongesting paper pulp raw material earlier; It is dense then the slurry of discongesting to be screened accent, and dense mill in carrying out again obtains the change machine slurry of single fiberization and directly delivers to machine room.Be specially:
(1) adopt alkali that the wood chip as paper pulp raw material is carried out preimpregnation, then the wood chip of preimpregnation and steam are together sent into to rub with the hands in the grinding machine and rub mill with the hands, float the agent regulating system simultaneously and add and float agent, paper pulp raw material is carried out one-Step bleach just to rubbing grinding machine with the hands, its black liquor is discharged system, and slurry is delivered to the adjusting tower;
(2) regulate tower and store slurry, float the adding in regulating tower of agent regulating system simultaneously and float agent, slurry is further bleached, then slurry is delivered to high dense fluffer;
(3) high dense fluffer is discongested the slurry that obtains and is broken up, the slurry that obtains discongesting, and deliver to screen tray;
(4) by screen tray the slurry of having discongested is screened, the thick slurry that obtains is delivered to dense disc mill in the one-level, and the screened stock that obtains is delivered to dense disc mill in the secondary;
(5) in the one-level dense disc mill to thick slurry carry out elementary in behind the dense mill, the slurry that obtains is delivered to dense disc mill in the secondary;
(6) dense mill during the screened stock that obtains of slurry that dense disc mill obtains dense mill in elementary in the secondary and screening carries out further obtains the change machine slurry of single fiberization, and copies paper and directly deliver to machine room, the production of finishing machine slurry so far by sending.
Wherein, being used for the slurry storage transfers dense adjusting tower to be located at high dense fluffer below or top, its structure as shown in Figure 3, from top to bottom, regulating tower comprises the storage compartment 1 that connects successively and transfers dense chamber 2, storage compartment 1 and transfer the junction of dense chamber 2 to be provided with the cutting agency that prevents the slurry local accumulation wherein transfers the longitudinal cross-section of dense chamber 2 to be and is beneficial to the chamfer trapezoidal shape that slurry is sent, and transfers dense chamber 2 one sides to be provided with dilution water entrance point 3.
In the said structure, cutting agency comprises rake arm 4 and rotating driving device 5 thereof, and rake arm 4 is located at the bottom of storage compartment 1, fixedlys connected with the main shaft 6 of rotating driving device 5 in rake arm 4 bottoms, as shown in Figure 4 and Figure 5, the surface that contacts with slurry of rake arm 4 is provided with a plurality of scraper plates 7.Transfer dense chamber 2 one sides also to be provided with and guarantee the uniform high-speed thruster 8 of slurry concentration.
When above-mentioned adjusting tower used, (wherein the direction of arrow is the flow direction of slurry) as shown in Figure 3 only entered storage compartment 1 through the slurry of rubbing grinding machine stranding mill with the hands by the charging aperture of regulating the cat head end; After the cutting agency of 1 bottom, storage compartment is located in startup, rotating driving device 5 drives 4 rotations of rake arm, the scraper plate 7 that harrow arm 4 surfaces this moment constantly scrapes slurry in rotary course, make slurry evenly from the storage compartment 1 discharging opening deliver to and transfer dense chamber 2, prevent the slurry local accumulation; Slurry enters when transferring dense chamber 2, if slurry needs dilution, then adds dilution waters from the dilution water entrance point 3 of transferring dense chamber 2 one sides, and starts high-speed thruster 8, makes the slurry concentration after the dilution even, and the slurry after the dilution is sent by the discharging opening of transferring dense chamber 2 at last.
In the change machine of the present embodiment slurry production process, rubbing grinding machine with the hands, to adopt model be the SM80 roller type paste mill, and it is the fluffer of HM50 that high dense fluffer adopts model, and all to adopt model be the disc mill of ZDPM500 for dense disc mill and secondary disc mill in the one-level.
As mentioned above, just can realize the present invention preferably, the foregoing description is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Be that all equalizations of doing according to content of the present invention change and modification, all contained by claim of the present invention scope required for protection.
Claims (6)
1, a kind of production method of chemi-mechanical pulp is characterized in that, earlier paper pulp raw material is rubbed with the hands mill and is discongested bleaching, the slurry that obtains discongesting; It is dense then the slurry of discongesting to be screened accent, and dense mill in carrying out again obtains the change machine slurry of single fiberization and directly delivers to machine room.
2, according to the described a kind of production method of chemi-mechanical pulp of claim 1, it is characterized in that described production method of chemi-mechanical pulp is specially:
(1) adopt alkali that the wood chip as paper pulp raw material is carried out preimpregnation, then the wood chip of preimpregnation and steam are together sent into to rub with the hands in the grinding machine and rub mill with the hands, float the agent regulating system simultaneously and add and float agent, paper pulp raw material is carried out one-Step bleach just to rubbing grinding machine with the hands, its black liquor is discharged system, and slurry is delivered to high dense fluffer;
(2) high dense fluffer is discongested the slurry of rubbing mill with the hands and obtaining and is broken up, the slurry that obtains discongesting, and deliver to and regulate tower and store;
(3) float the adding in regulating tower of agent regulating system and float agent, the slurry of having discongested is further bleached, add dilution water simultaneously slurry is diluted;
(4) by the one-level screen tray slurry is carried out scalping, setting concentration according to slurry, the screened stock that scalping obtains is delivered to concentrator and is concentrated or deliver to the concentration adjustment container and dilute, and the thick slag that scalping obtains is delivered to and rubbed grinding machine with the hands and paper pulp raw material together carries out defibrination;
(5) dense mill during dense disc mill carried out during process screened stock concentrated or dilution was delivered to obtains the slurry of single fiberization and delivers to the secondary screen tray;
(6) after the secondary screen tray carried out fine screen to the slurry of single fiberization, the change machine slurry that obtains was copied paper and is directly delivered to machine room by sending, and its screening reject is sent the adjusting tower back to, so far the production of finishing machine slurry.
3, according to the described a kind of production method of chemi-mechanical pulp of claim 1, it is characterized in that described production method of chemi-mechanical pulp is specially:
(1) adopt alkali that the wood chip as paper pulp raw material is carried out preimpregnation, then the wood chip of preimpregnation and steam are together sent into to rub with the hands in the grinding machine and rub mill with the hands, float the agent regulating system simultaneously and add and float agent, paper pulp raw material is carried out one-Step bleach just to rubbing grinding machine with the hands, its black liquor is discharged system, and slurry is delivered to the adjusting tower;
(2) regulate tower and store slurry, float the adding in regulating tower of agent regulating system simultaneously and float agent, slurry is further bleached, then slurry is delivered to high dense fluffer;
(3) high dense fluffer is discongested the slurry that obtains and is broken up, the slurry that obtains discongesting, and deliver to screen tray;
(4) by screen tray the slurry of having discongested is screened, the thick slurry that obtains is delivered to dense disc mill in the one-level, and the screened stock that obtains is delivered to dense disc mill in the secondary;
(5) in the one-level dense disc mill to thick slurry carry out elementary in behind the dense mill, the slurry that obtains is delivered to dense disc mill in the secondary;
(6) dense mill during the screened stock that obtains of slurry that dense disc mill obtains dense mill in elementary in the secondary and screening carries out further obtains the change machine slurry of single fiberization, and copies paper and directly deliver to machine room, the production of finishing machine slurry so far by sending.
According to each described a kind of production method of chemi-mechanical pulp of claim 1～3, it is characterized in that 4, described adjusting tower is located at high dense fluffer below or top, from top to bottom, regulate tower and comprise the storage compartment that connects successively and transfer dense chamber; Described storage compartment and transfer the junction of dense chamber to be provided with the cutting agency that prevents that high consistency stock is built on stilts, the longitudinal cross-section of the dense chamber of described accent are and are beneficial to the chamfer trapezoidal shape that slurry is sent, and transfer dense chamber one side to be provided with the dilution water entrance point.
5, according to the described a kind of production method of chemi-mechanical pulp of claim 4, it is characterized in that, described cutting agency comprises rake arm and rotating driving device thereof, the rake arm is located at the bottom of described storage compartment, fixedly connected with the main shaft of rotating driving device in rake arm bottom, the surface that the rake arm contacts with slurry is provided with a plurality of scraper plates.
According to the described a kind of production method of chemi-mechanical pulp of claim 4, it is characterized in that 6, the dense chamber of described accent one side also is provided with and guarantees the uniform high-speed thruster of slurry concentration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101922250A CN101666053B (en) | 2009-09-11 | 2009-09-11 | Production method of chemi-mechanical pulp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101922250A CN101666053B (en) | 2009-09-11 | 2009-09-11 | Production method of chemi-mechanical pulp |
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| CN101666053A true CN101666053A (en) | 2010-03-10 |
| CN101666053B CN101666053B (en) | 2011-07-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631183A (en) * | 2015-03-14 | 2015-05-20 | 联盛纸业（龙海）有限公司 | Device for efficiently recovering fibers from papermaking factory, as well as method thereof |
| CN104662226A (en) * | 2012-08-10 | 2015-05-27 | 福伊特专利有限公司 | Broke system |
| CN104746372A (en) * | 2015-03-05 | 2015-07-01 | 新疆国力源环保科技有限公司 | Preparation process of flax natural-color semi-chemimechanical pulp |
| CN105256627A (en) * | 2015-08-28 | 2016-01-20 | 山东华鑫资源环保科技开发有限公司 | Method for producing crop straw fibers |
| CN105421131A (en) * | 2015-10-30 | 2016-03-23 | 重庆市南川区金鑫纸业有限公司 | Pulping method for inner core layer of paper pulp |
-
2009
- 2009-09-11 CN CN2009101922250A patent/CN101666053B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104662226A (en) * | 2012-08-10 | 2015-05-27 | 福伊特专利有限公司 | Broke system |
| CN104746372A (en) * | 2015-03-05 | 2015-07-01 | 新疆国力源环保科技有限公司 | Preparation process of flax natural-color semi-chemimechanical pulp |
| CN104631183A (en) * | 2015-03-14 | 2015-05-20 | 联盛纸业（龙海）有限公司 | Device for efficiently recovering fibers from papermaking factory, as well as method thereof |
| CN105256627A (en) * | 2015-08-28 | 2016-01-20 | 山东华鑫资源环保科技开发有限公司 | Method for producing crop straw fibers |
| CN105421131A (en) * | 2015-10-30 | 2016-03-23 | 重庆市南川区金鑫纸业有限公司 | Pulping method for inner core layer of paper pulp |
| CN105421131B (en) * | 2015-10-30 | 2017-05-10 | 重庆市南川区金鑫纸业有限公司 | Pulping method for inner core layer of paper pulp |
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| CN101666053B (en) | 2011-07-20 |
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Effective date of registration: 20160801 Address after: 511458, Guangzhou, Guangdong, Nansha Nansha District street, Yi Yi Road, No. 1, 3 buildings, two floor Patentee after: GUANGDONG YINYAN HIGH-NEW MATERIAL CO., LTD. Address before: 510640 Tianhe District, Guangdong, No. five road, No. 381, Patentee before: South China University of Technology |
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