CN100567631C - A kind of disc type heat dispersing method and device and application that is used for paper-making process - Google Patents
A kind of disc type heat dispersing method and device and application that is used for paper-making process Download PDFInfo
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- CN100567631C CN100567631C CNB2005100326806A CN200510032680A CN100567631C CN 100567631 C CN100567631 C CN 100567631C CN B2005100326806 A CNB2005100326806 A CN B2005100326806A CN 200510032680 A CN200510032680 A CN 200510032680A CN 100567631 C CN100567631 C CN 100567631C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention provides a kind of disc type heat dispersing method, be specially slurry pre-dispersed processing of process earlier before entering hot scatter stage, described pre-dispersed treatment process is that slurry passes through by the high shear zone that forms between high speed rotor rotated and the stator, and heats in this high shear zone; The hot dispersal device of a kind of disc type comprises heat dispersion machine, pre-dispersed device, and described pre-dispersed device is arranged at the front end of heat dispersion machine and is connected with heat dispersion machine in the handling process of slip; It is the production process of the middle and high shelves of raw material production paper that the present invention can be applicable to waste paper, make pulp particle littler, mix more even, the efficiency of heating surface improves greatly, significantly shorten the heat time heating time of paper pulp,, reduce to below the 1min by 5 traditional～6min, help reducing the COD discharge capacity, and can effectively avoid the generation of the impaired and yellowing reversion of pulp phenomenon of pulp strength.Simultaneously improve the treatment effect of heat dispersion machine effectively, thereby improve the crudy of the hot dispersion process of whole papermaking.
Description
Technical field
The present invention relates to the hot dispersion technology of sicker in the paper-making industry secondary stock, particularly a kind of disc type heat dispersing method and device and application that is used for paper-making process.
Background technology
Heat in the paper-making process disperse be with the sicker in the paper making pulp after heating, by effects such as rubbing, extruding and frictions, large diameter sicker is dispersed into subparticle, to improve paper quality, improve paper performance.The hot decentralized system of standard comprises concentrator, firing equipment and heat dispersion machine.The heat dispersion machine that uses has roll-type heat dispersion machine and disc type heat dispersion machine both at home and abroad, the temperature that the roll-type heat dispersion machine is handled is low than the disc type heat dispersion machine, the operating temperature of disc type heat dispersion machine is between 90 ℃～130 ℃, and the operating temperature of roll-type heat dispersion machine is lower than 100 ℃.According to experience both domestic and external and data, in the Waste Paper Handling system, the disc type heat dispersion machine is dispersed with certain advantage to the treatment effect of sicker than roll-type heat, and when with waste paper being the middle and high shelves of raw material production paper, what generally use is the disc type heat dispersion machine.Domestic and international existing hot dispersion technology, generally adopt and after dehydration, utilize heating spiral feeding high compressed steam that slurry temperature is raise, and then the technological process that enters heat dispersion machine, because helical stir mainly is the material that the material of bulk is broken into fritter, do not produce the effect of obviously disperseing, so this hot dispersion technology tends to cause heating inhomogeneous, heat time heating time long (because the volume of material is still bigger), the time of paper pulp under the condition of high temperature long (in order to guarantee that the bigger material heating of volume fully), the COD discharge capacity is big and cause the generation of the impaired and yellowing reversion of pulp phenomenon of pulp strength.Therefore, development disc type hot dispersion technology shortens slurry heat time heating time, to waste paper pulp-making, particularly utilizes waste paper to produce middle and high shelves paper and has crucial meaning.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art with not enough; provide a kind of homogeneous heating, speed fast; can reduce the COD discharge capacity of hot scatter stage, the intensity of protection slurry and improve the disc type heat dispersing method that paper-making process sicker heat is disperseed that is used for of hot dispersion efficiency.
Another object of the present invention is to provide a kind of hot dispersal device of disc type of realizing said method.
A further object of the present invention is to provide the application of a kind of above-mentioned disc type heat dispersing method and device.
Purpose of the present invention is achieved through the following technical solutions: this disc type heat dispersing method is slurry pre-dispersed processing of process earlier before entering hot scatter stage, described pre-dispersed treatment process is that slurry passes through by the high shear zone that forms between high speed rotor rotated and the stator, and heats in this high shear zone; Described high shear is meant because the high speed rotation of rotor, drive the slurry high speed rotating, because rotating speed there are differences between the slurry layer of slurry, make between the pulp particle, produce shearing force between the slurry group, thereby make slurry group be separated into granule, also produce effects such as friction, shearing between the fiber in the slurry because of shearing force; Simultaneously, owing to the gap between the tooth of rotor and stator constantly changes, wait effect thereby make slurry produce extruding.
Described heating process is that high steam enters high shear zone by the through hole that distributes on the described stator and contacts with slurry.
Slurry (sicker) temperature after the described pre-dispersed processing is controlled at 90 ℃～120 ℃; Mainly be to feed the temperature that quantity of steam is regulated control slurry (sicker) by control.
The rotary speed of described rotor is 1450 rev/mins～3500 rev/mins.
A kind of hot dispersal device of disc type of realizing said method comprises heat dispersion machine, it is characterized in that: also comprise pre-dispersed device, described pre-dispersed device is arranged at the front end of heat dispersion machine and is connected with heat dispersion machine in the handling process of slip.
Described pre-dispersed device comprises that feed pipe, rotor, stator, steam add pipe, described rotor all is discoid and the coaxial setting of relative engagement with stator, between rotor and stator, form high shear zone, the center of described stator is provided with feed pipe, and described steam adding pipe is connected with stator and is communicated to described high shear zone.
Described rotor is provided with relative tooth with the apparent surface that stator forms high shear zone, and the gap between both relative teeth is dwindled laterally gradually by the inboard of rotor and stator.
The stator of described pre-dispersed device comprises steaming chamber, distribution of steam hole, and described steaming chamber is arranged in the stator in the form of a ring, and its upper end adds pipe with the steam that penetrates stator and is connected, and its lower end is connected with described high shear zone by the distribution of steam hole of passing stator.
Described distribution of steam hole mainly is distributed in the zone near the center by the setting that distributes laterally of the inboard of stator; Described distribution of steam hole generally is communicated to the root of stator tooth; The total cross-sectional area in distribution of steam hole is less than or equal to the total cross-sectional area that steam adds pipe, makes steaming chamber keep high pressure, thereby makes steam can enter high shear zone smoothly.
Described pre-dispersed device is connected with standpipe by drainage conduit, and the outlet of described standpipe is connected with the inlet of described heat dispersion machine, and slurry is conveyed into heat dispersion machine by standpipe; Described standpipe is designed to up big and down small shape, and high consistency stock is in this short stay, the fluctuation of subduing supplied materials on the one hand, and stability of flow when making slurry enter heat dispersion machine creates conditions for the control throughput on the other hand.
It is the production process of the middle and high shelves of raw material production paper that aforementioned disc type heat dispersing method and device can be applicable to waste paper.
Action principle of the present invention is: high consistency stock enters pre-dispersed section after concentrating through dewatering, through pre-dispersed section heating slurry and pre-dispersed after, enter heat dispersion machine again; Pre-dispersed section effect is heating and the shape that changes sicker, large-sized sicker is dispersed into undersized sicker, improve the hot dispersion effect of subsequent thermal dispersion machine, concrete mechanism is: the slurry process is by forming high shear zone between high speed rotor rotated and the stator, the temperature that slurry most of zone in high shear zone does not all reach the requirement of subsequent thermal scatter stage (is just reaching the temperature that subsequent thermal disperses section to require near the high shear zone exit region, so the time of slurry under the condition of high temperature is shorter), slurry is rubbed in high shear zone, rubbing, extruding etc. is similar to the mechanism that heat is disperseed, be dispersed into granule, and adding steam when disperseing heats, high-pressure and high-temperature steam directly enters high shear zone, in high shear zone, because the particle of slurry is from large to small, in this change procedure, high temperature and high pressure steam constantly mixes with pulp particle, sicker particle in the slurry is because the pulp particle diameter variation, increasing sicker particle constantly is exposed in the high temperature and high pressure steam, make more and more sicker particles be heated intensification, because slurry is dispersed into undersized particle, the contact area of steam and slurry is increased, thereby accelerated the speed of slurry heating; Simultaneously, steam fully mixes with slurry in the high speed shear district, makes that to add thermal effect more even; Pre-dispersed section through effects such as friction, heating, and the sicker of sheet is formed granular sicker, helps improving the efficient that subsequent thermal is disperseed.
The present invention has following advantage and effect with respect to prior art: the pre-dispersed device of high shear that (1) the technology of the present invention adopts passes through high shear mixing, make pulp particle littler, mix more even, the efficiency of heating surface improves greatly, significantly shortened the heat time heating time of paper pulp,, reduce to below the 1min making heat time heating time by 5 traditional～6min, help reducing the COD discharge capacity, and can effectively avoid the generation of the impaired and yellowing reversion of pulp phenomenon of pulp strength.(2) by the present invention can make that paper pulp is rubbed in high shear zone, under extruding and the rubbing action, reach pre-dispersed purpose, make and enter follow-up heat dispersion machine slurry and be easy to more handle, thereby also can improve the treatment effect of heat dispersion machine effectively, thereby improve the crudy of the hot dispersion process of whole papermaking.(3) to be applied to waste paper be that the production process effect of the middle and high shelves of raw material production paper is very obvious in the present invention, can significantly improve production efficiency, improve product quality, and cost is lower, relatively being suitable for domestic large, medium and small type paper mill promotes the use of, can be used for substituting the higher hot dispersing apparatus of import of price, economic benefit is good.
Description of drawings
Fig. 1 is a process principle figure of the present invention.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is the structural representation of stator shown in Figure 2.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
Fig. 1 shows the idiographic flow that the present invention uses, as seen from Figure 1, the flow system of the present invention's application comprises that the preceding standpipe 4 of dehydration equipment (twin-wire press) 1, broken spiral 2, conveyor screw 3, pre-dispersed device, the steam that connect successively add pipe 5, pre-dispersed device 6, drainage conduit 7, the preceding standpipe 8 of heat dispersion machine, heat dispersion machine 9; Standpipe 4, steam add pipe 5, pre-dispersed device 6, drainage conduit 7, the preceding standpipe 8 of heat dispersion machine and the hot dispersal device of heat dispersion machine 9 these disc types of formation before the wherein pre-dispersed device; Described pre-dispersed device 6 in the handling process of slip, be arranged at heat dispersion machine 9 front end and with heat dispersion machine 9 by drainage conduit 7 and heat dispersion machine before standpipe 8 be connected.The concrete structure of described pre-dispersed device 6 as shown in Figure 2, as seen from Figure 2, pre-dispersed device 6 comprises that feed pipe 6-1, stator 6-2, rotor 6-4, steam add pipe 5, described rotor 6-4 and stator 6-2 are discoid and the coaxial setting of relative engagement, between rotor 6-4 and stator 6-2, form high shear zone 6-3, the center of described stator 6-2 is provided with feed pipe 6-1, and described steam adds pipe 5 and is connected with stator 6-2 and is communicated to described high shear zone 6-3.Described rotor 6-4 is provided with relative tooth 6-5 with the apparent surface that stator 6-2 forms high shear zone 6-4, and the gap between both relative tooth 6-5 is dwindled laterally gradually by the inboard of rotor 6-4 and stator 6-2.The stator 6-2 concrete structure of described pre-dispersed device 6 as shown in Figure 3, as seen from Figure 3, described stator 6-2 comprises steaming chamber 6-2-1, distribution of steam hole 6-2-2, described steaming chamber 6-2-1 is arranged in the stator 6-2 in the form of a ring, its upper end adds pipe 5 with the steam that penetrates stator 6-2 and is connected, and its lower end is connected with described high shear zone 6-3 by the distribution of steam hole 6-2-2 that passes stator 6-2.Described distribution of steam hole 6-2-2 mainly is distributed in the zone near the center by the setting that distributes laterally of the inboard of stator 6-2; Described distribution of steam hole 6-2-2 generally is communicated to the root of stator tooth 6-5; The total cross-sectional area of distribution of steam hole 6-2-2 is less than or equal to the total cross-sectional area that steam adds pipe 5, makes steaming chamber 6-2-1 keep high pressure, thereby makes steam can enter high shear zone 6-3 smoothly.Be designed to up big and down small shape with described pre-dispersed device 6 by the standpipe 8 that drainage conduit 7 is connected, high consistency stock is in this short stay, the fluctuation of subduing supplied materials on the one hand, stability of flow when making slurry enter heat dispersion machine 9 creates conditions for the control throughput on the other hand.
The disc type heat dispersing method that utilizes the hot dispersal device of aforementioned disc type to realize is: slurry passes through twin-wire press) 1, broken spiral 2, conveyor screw 3 handle and be delivered to standpipe 4 before the pre-dispersed device, send in the pre-dispersed device 6 by standpipe 4 before the pre-dispersed device, process is by the high shear zone 6-3 that forms between high speed rotor rotated 6-4 and the stator 6-2, and the high temperature and high pressure steams that feed by steam adding pipe 5 in this high shear zone 6-3 heat; The process that specifically feeds steam is: steam adds the steaming chamber 6-2-1 that pipe 5 feeds in the stator 6-2 by steam, and the distribution of steam hole 6-2-2 that upward distributes by stator 6-2 enters in the high shear zone 6-3 and contacts with slurry then.The temperature of slurry after pre-dispersed processing is controlled at 90 ℃～120 ℃, mainly is to feed quantity of steam by control to regulate.
It is the production process of the middle and high shelves of raw material production paper that aforementioned disc type heat dispersing method and device can be applicable to waste paper, make pulp particle littler, mix more even, the efficiency of heating surface improves greatly, significantly shorten the heat time heating time of paper pulp,, reduce to below the 1min by 5 traditional～6min, help reducing the COD discharge capacity, and can effectively avoid the generation of the impaired and yellowing reversion of pulp phenomenon of pulp strength.Simultaneously improve the treatment effect of heat dispersion machine effectively, thereby improve the crudy of the hot dispersion process of whole papermaking.
Claims (10)
1, a kind of disc type heat dispersing method, it is characterized in that: slurry is the pre-dispersed processing of process earlier before entering hot scatter stage, the described pre-dispersed slurry that is treated to passes through by the high shear zone that forms between high speed rotor rotated and the stator, and heats in this high shear zone.
2, disc type heat dispersing method according to claim 1 is characterized in that: the described high steam that is heated to be enters high shear zone by the through hole that distributes on the described stator and contacts with slurry.
3, disc type heat dispersing method according to claim 1 is characterized in that: the slurry temperature after the described pre-dispersed processing is regulated by control feeding quantity of steam and is controlled at 90 ℃～120 ℃.
4, realize the hot dispersal device of disc type of each described method of claim 1～3, comprise heat dispersion machine, it is characterized in that: comprise pre-dispersed device, described pre-dispersed device is arranged at the front end of heat dispersion machine and is connected with heat dispersion machine in the handling process of slip.
5, the hot dispersal device of disc type according to claim 4, it is characterized in that: described pre-dispersed device comprises that feed pipe, rotor, stator, steam add pipe, described rotor all is discoid and the coaxial setting of relative engagement with stator, between rotor and stator, form high shear zone, the center of described stator is provided with feed pipe, and described steam adding pipe is connected with stator and is communicated to described high shear zone.
6, the hot dispersal device of disc type according to claim 5 is characterized in that: described rotor is provided with relative tooth with the apparent surface that stator forms high shear zone, and the gap between both relative teeth is dwindled laterally gradually by the inboard of rotor and stator.
7, the hot dispersal device of disc type according to claim 5, it is characterized in that: the stator of described pre-dispersed device comprises steaming chamber, distribution of steam hole, described steaming chamber is arranged in the stator in the form of a ring, its upper end adds pipe with the steam that penetrates stator and is connected, and its lower end is connected with described high shear zone by the distribution of steam hole of passing stator.
8, the hot dispersal device of disc type according to claim 7 is characterized in that: described distribution of steam hole mainly is distributed in the zone near the center by the setting that distributes laterally of the inboard of stator, and described distribution of steam hole generally is communicated to the root of stator tooth; The total cross-sectional area in distribution of steam hole is less than or equal to the total cross-sectional area that steam adds pipe.
9, the hot dispersal device of disc type according to claim 4 is characterized in that: described pre-dispersed device is connected with standpipe by drainage conduit, and the outlet of described standpipe is connected with the inlet of described heat dispersion machine; Described standpipe is designed to up big and down small shape.
10, according to the application of each described disc type heat dispersing method of claim 1～3, it is characterized in that: being applied to waste paper is the production process of the middle and high shelves of raw material production paper.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100326806A CN100567631C (en) | 2005-01-04 | 2005-01-04 | A kind of disc type heat dispersing method and device and application that is used for paper-making process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100326806A CN100567631C (en) | 2005-01-04 | 2005-01-04 | A kind of disc type heat dispersing method and device and application that is used for paper-making process |
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| Publication Number | Publication Date |
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| CN1648334A CN1648334A (en) | 2005-08-03 |
| CN100567631C true CN100567631C (en) | 2009-12-09 |
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| CNB2005100326806A Expired - Fee Related CN100567631C (en) | 2005-01-04 | 2005-01-04 | A kind of disc type heat dispersing method and device and application that is used for paper-making process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FI125635B (en) * | 2015-02-05 | 2015-12-31 | Valmet Technologies Oy | Device for preheating dispersible circulating pulp |
| CN107366174B (en) * | 2017-08-31 | 2019-04-09 | 华南理工大学 | A kind of mthod of white water from paper making microstickies efficiently stick purification method and device |
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Non-Patent Citations (8)
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| 国产盘式热分散漂白系统的设计和运行. 张国光等.中国造纸，第22卷第5期. 2003 |
| 国产盘式热分散漂白系统的设计和运行. 张国光等.中国造纸，第22卷第5期. 2003 * |
| 盘式热分散机. 张国光.中华纸业，第3期. 2000 |
| 盘式热分散机. 张国光.中华纸业，第3期. 2000 * |
| 盘式热分散机的安装与使用. 倪力.中华纸业，第8期. 2002 |
| 盘式热分散机的安装与使用. 倪力.中华纸业，第8期. 2002 * |
| 盘式热分散装置的开发和应用. 张国光.中国造纸学报2003年增刊--中国造纸学会第十一届学术年会论文集. 2003 |
| 盘式热分散装置的开发和应用. 张国光.中国造纸学报2003年增刊--中国造纸学会第十一届学术年会论文集. 2003 * |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangdong Lee & Man Paper Factory Co., Ltd. Assignor: South China University of Technology Contract record no.: 2010440001257 Denomination of invention: Disc type heat dispersing method and its device for paper-making process and use Granted publication date: 20091209 License type: Exclusive License Open date: 20050803 Record date: 20100819 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20140104 |