CN112962347B - Bentonite preparation and addition system and preparation and addition method in papermaking process - Google Patents
Bentonite preparation and addition system and preparation and addition method in papermaking process Download PDFInfo
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- CN112962347B CN112962347B CN202110162291.4A CN202110162291A CN112962347B CN 112962347 B CN112962347 B CN 112962347B CN 202110162291 A CN202110162291 A CN 202110162291A CN 112962347 B CN112962347 B CN 112962347B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
- D21H23/20—Apparatus therefor
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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
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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Abstract
The invention discloses a bentonite preparation and addition system and a bentonite preparation and addition method in a papermaking process, wherein the bentonite preparation and addition system comprises a pre-dispersing tank, a dissolving tank and a finished product tank, the pre-dispersing tank is provided with a first feed port A, a first feed port B and a first discharge port, the first discharge port is a self-flow discharge port, the dissolving tank is provided with a second feed port and a second discharge port, the second discharge port is an overflow discharge port, the finished product tank is provided with a third feed port and a third discharge port, the third discharge port is a self-flow discharge port, the first feed port A is communicated with a bentonite storage device, the first feed port B is communicated with a super-clean water tank of a paper machine, and the third discharge port is higher than the feed port of a pulp tank of the paper machine and is mutually communicated. The invention is not only beneficial to the dispersion of bentonite, but also saves clean water and power equipment.
Description
Technical Field
The invention belongs to the technical field of pulping and papermaking, and particularly relates to a bentonite preparation and addition system and a bentonite preparation and addition method in a papermaking process.
Background
In the production process of cardboard paper, the paper machine flow system can all add and help stay the filter aid, helps the purpose and the effect that stay and help the straining lie in: (1) the retention of filler and fine fiber is improved, the loss is reduced, the white water circulation is improved, and the pollution is reduced. (2) Improving the two sides of paper industry and improving the printing performance of paper. (3) The dewatering capacity of the wire section is improved, so that the speed of the paper machine is improved. The filter aid of the flow system in the papermaking industry is widely selected from bentonite (bentonite), the preparation and the addition of the bentonite (bentonite) are particularly important, the preparation concentration of the bentonite (bentonite) is 1.5% -5.0%, the prepared material flows to a storage tank, and finally, the material flows are added to the vicinity of a section of screen by using a cam rotor pump. In the prior art, clean water is used for preparing bentonite, the temperature of the prepared water is low, the bentonite dispersing effect is poor, caking is easy, in addition, the clean water consumption can be increased when the bentonite is prepared by using clean water, and a tank body and power equipment are also required to be equipped.
Disclosure of Invention
The invention aims to provide a bentonite preparation and addition system and a bentonite preparation and addition method in the papermaking process, which have good bentonite dispersion effect, save clean water and save power equipment.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a bentonite preparation adds system in papermaking process, includes predispersion groove, dissolving tank and finished product groove, the predispersion groove is equipped with first feed inlet A, first feed inlet B and first discharge gate, first discharge gate is the discharge gate that flows automatically, the dissolving tank is equipped with second feed inlet and second discharge gate, the second discharge gate is overflow discharge gate, the finished product groove is equipped with third feed inlet and third discharge gate, the third discharge gate is the discharge gate that flows automatically, first feed inlet A communicates with a bentonite storage device, first feed inlet B communicates with the super clean water pond of paper machine, the third discharge gate is higher than the feed inlet of the thick liquid pond of paper machine and both intercommunicate.
As a further improvement, a powder conveying device is arranged between the bentonite storage device and the first feeding port A.
As a further improvement, a white water pump is arranged between the ultra-clean water tank and the first feed inlet B.
As a further improvement, the dissolving tank is arranged right below the pre-dispersing tank.
As a further improvement, the finishing tank is arranged below the side of the dissolution tank.
As a further improvement, the pulp tank is arranged below the side of the finished product tank.
As a further improvement, the first feed port a and the first feed port B are respectively arranged on two opposite side walls of the pre-dispersing tank, the first feed port a and the first feed port B are close to the top of the pre-dispersing tank, the first discharge port is arranged at the bottom of the pre-dispersing tank, the second feed port is arranged at the top of the dissolving tank, the second discharge port is arranged on the side wall of the dissolving tank, the third feed port is arranged at the top of the finished product tank, and the third discharge port is arranged on the side wall of the finished product tank and is close to the bottom of the finished product tank.
As a further improvement, a dissolution stirrer is arranged in the dissolution tank, and a finished product stirrer is arranged in the finished product tank.
The invention also provides another technical scheme: a bentonite preparation and addition method in the papermaking process adopts the bentonite preparation and addition system, and comprises the following steps:
(1) Delivering bentonite in the bentonite storage device and the ultra-clean water in the ultra-clean water pool into the pre-dispersing tank to obtain a first bentonite solution;
(2) Automatically flowing the first bentonite solution in the pre-dispersing tank into the dissolving tank to obtain a second bentonite solution;
(3) Overflowing the second bentonite solution in the dissolving tank into the finished product tank to obtain a third bentonite solution;
(4) And automatically flowing the third bentonite solution in the finished product tank to the slurry pond.
As a further improvement, the temperature of the ultra-clean water is 40-50 ℃.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1) According to the bentonite preparation and addition system and the bentonite preparation and addition method in the papermaking process, the bentonite preparation is changed into the ultra-clean water of the paper machine, so that on one hand, the clean water consumption is saved, and the clean water consumption per day of a single-layer net paper machine can be saved by about 120 cubic meters; on the other hand, the water temperature of the ultra-clean water of the paper machine is high and is about 45 ℃, so that the bentonite is dispersed; the bentonite can directly flow into the paper machine pulp tank, the adding mode is changed into a natural mode, a storage tank and a rotor pump can be saved, not only can further save energy, but also the pulp can still run for a certain distance between the pulp entering the net parts, the sufficient removal of the adhesive in the pulp can be realized, the adhesive is prevented from being adhered to the net parts of the paper machine, and the flatness and the dehydration performance of the product are influenced;
2) According to the bentonite preparation and addition system and the bentonite preparation and addition method in the papermaking process, disclosed by the invention, the bentonite solution in the dissolving tank is added into the finished product tank in an overflow manner, so that the concentration in the dissolving tank can be ensured to be easier to control, the stirring effect is kept stable, and secondary dispersion is not needed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
FIG. 1 is a schematic diagram of the composition of a bentonite preparation and addition system in the papermaking process disclosed by the invention;
FIG. 2 is a schematic illustration of the connection between a predispersion tank and a dissolution tank as disclosed in the present invention.
Wherein, 10, pre-dispersing groove; 11. a first feed port; 12. a first discharge port; 20. a dissolution tank; 21. a second feed inlet; 22. a second discharge port; 23. a dissolution stirrer; 30. a finished product tank; 31. a third feed inlet; 32. a third discharge port; 40. bentonite storage device; 50. a super-clean water pool; 60. a slurry tank; 71. bentonite conveying pipelines; 72. a compressed air delivery line; 81. a super-clean water delivery pipe; 82. a nozzle; 87. a splash-proof barrel.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof. In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, are merely relational terms determined for convenience in describing structural relationships of the various components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, and are not to be construed as limiting the present disclosure. In the present disclosure, terms such as "fixedly coupled," "connected," and the like are to be construed broadly and refer to either a fixed connection or an integral or removable connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the disclosure may be determined according to circumstances, and should not be interpreted as limiting the disclosure, for relevant scientific research or a person skilled in the art.
The following is a preferred embodiment for illustrating the present invention, but is not intended to limit the scope of the present invention.
Referring to fig. 1, as shown in the illustration, a bentonite preparing and adding system in the papermaking process comprises a pre-dispersing tank 10, a dissolving tank 20 and a finished product tank 30, wherein the pre-dispersing tank 10 is provided with a first feed port a11, a first feed port B12 and a first discharge port 13, the first discharge port 13 is a self-flow discharge port, the dissolving tank 20 is provided with a second feed port 21 and a second discharge port 22, the second discharge port 22 is an overflow discharge port, the finished product tank 30 is provided with a third feed port 31 and a third discharge port 32, the third discharge port 32 is a self-flow discharge port, the first feed port a11 is communicated with a bentonite storage device 40, the first feed port B12 is communicated with a super-clean water pool 50 of the paper machine, and the third discharge port 32 is higher than the feed port of a pulp pool 60 of the paper machine and is mutually communicated.
In the preferred embodiment of this example, a powder feeding device (not shown) is provided between the bentonite storage device 40 and the first inlet port a 11. In this embodiment, the bentonite storage device is lower than the dispersing tank, and the powder conveying device may be a screw conveying device. In other embodiments, the bentonite storage device is higher than the dispersing tank, and the powder conveying equipment adopts a wind power conveying equipment.
In the preferred embodiment of this embodiment, a white water pump (not shown) is provided between the ultra-clean water reservoir 50 and the first inlet B12.
In the preferred embodiment of the present embodiment, the dissolution tank 20 is provided immediately below the pre-dispersion tank 10. In this example, the first bentonite solution dissolved in the dissolution tank was directly flowed from the dissolution tank at the shortest distance. In other embodiments it may also be: the dissolving tank is arranged below the side of the pre-dispersing tank.
In the preferred embodiment of the present example, the finishing tank 30 is provided below the side of the dissolution tank 20. In other embodiments it may also be: the finished product tank surrounds the dissolving tank.
In the preferred embodiment of this example, the slurry tank 60 is disposed laterally below the finishing tank 30. The position relation between the finished product tank and the slurry tank can be installed according to the site condition. In other embodiments it may also be: the pulp pool is arranged right below the finished product groove.
In the preferred embodiment of the present embodiment, the first feed port a11 and the first feed port B12 are respectively disposed on two opposite side walls of the pre-dispersion tank 10, and the first feed port a11 and the first feed port B12 are close to the top of the pre-dispersion tank 10, the first discharge port 13 is disposed at the bottom of the pre-dispersion tank 10, the second feed port 21 is disposed at the top of the dissolution tank 20, the second discharge port 22 is disposed on the side wall of the dissolution tank 20, the third feed port 31 is disposed at the top of the final product tank 30, the third discharge port 32 is disposed on the side wall of the final product tank, and the third discharge port 32 is close to the bottom of the final product tank 30.
In the preferred embodiment of this example, dissolution tank 20 is provided with dissolution stirrer 23, and finished product tank 30 is provided with finished product stirrer (not shown).
The following describes a bentonite preparation and addition method in the papermaking process, which adopts the bentonite preparation and addition system as described above, and comprises the following steps:
(1) Delivering bentonite in the bentonite storage device 40 and the ultra-clean water in the ultra-clean water tank 50 into the pre-dispersing tank 10 to obtain a first bentonite solution;
(2) The first bentonite solution in the pre-dispersion tank 10 automatically flows into the dissolution tank 20 to obtain a second bentonite solution;
(3) Overflowing the second bentonite solution in the dissolving tank 20 into a finished product tank 30 to obtain a third bentonite solution;
(4) The third bentonite solution in the finishing tank 30 is self-flowed to the slurry tank 60.
In a preferred embodiment of this example, the ultra-clean water is at a temperature of 40-50 ℃. For example 40 ℃, 45 ℃ or 50 ℃.
The preferred embodiment in this example further comprises a bentonite conveying pipe 71 for conveying bentonite and a compressed air conveying pipe 72 for introducing compressed air into the bentonite conveying pipe 71, wherein the inlet of the bentonite conveying pipe 71 is connected with the powder conveying device, the outlet of the compressed air conveying pipe 72 is positioned in the bentonite conveying pipe 71, and the outlet of the bentonite conveying pipe 71 and the outlet of the compressed air conveying pipe 72 face the same direction.
In the preferred embodiment of this example, the bentonite conveying pipe 71 is a bent pipe, and the compressed air conveying pipe 72 penetrates through the corner of the bentonite conveying pipe 71.
The preferred embodiment in this example further includes a super-clean water delivery pipe 81 for delivering super-clean water and a plurality of nozzles 82 for spraying super-clean water, wherein the inlet of the super-clean water delivery pipe 81 is connected to the white water pump, the plurality of nozzles 82 are disposed around the bentonite delivery pipe 71, the inlets of the plurality of nozzles 82 are connected to the outlet of the super-clean water delivery pipe 81, and the outlets of the plurality of nozzles 82 are oriented in the same direction as the outlet of the bentonite delivery pipe 71.
In the preferred embodiment of the present embodiment, the nozzle 82 is a fan nozzle.
The pre-dispersion tank 10 is sleeved on the outer side of the bentonite conveying pipeline 71, the pre-dispersion tank 10 is provided with a first port and a second port, the first port and the outlet of the bentonite conveying pipeline 71 face the same direction, the second port and the outlet of the bentonite conveying pipeline 71 face the opposite direction, the first port is provided with a water distribution plate, the water distribution plate is provided with a first avoidance mounting hole for the bentonite conveying pipeline 71 to pass through and a plurality of water spraying holes (not shown in the figure) uniformly distributed around the first avoidance mounting hole, the plurality of nozzles 82 are respectively arranged on the plurality of water spraying holes, the second port is provided with a plugging plate, the plugging plate is provided with a second avoidance mounting hole for the bentonite conveying pipeline 71 to pass through, and the outlet of the ultra-clean water conveying pipeline 81 is connected with the side wall of the pre-dispersion tank 10.
The preferred embodiment in this example further comprises a splash guard 87 for preventing water from splashing, wherein the splash guard 87 is sleeved on the outer side of the bentonite conveying pipeline 71, the pre-dispersing tank 10 is connected with the splash guard 87, the pre-dispersing tank 10 is arranged away from the outlet of the bentonite conveying pipeline 71, and the splash guard 87 is arranged close to the outlet of the bentonite conveying pipeline 71.
In the preferred embodiment of this example, splash guard 87 is a transparent cylinder.
In the preferred embodiment of this example, the outlet of bentonite conveying conduit 71 leads to the inlet of dissolution tank 20.
In this embodiment, the outlet of the bentonite conveying pipe 71 is downward, the outlet of the compressed air conveying pipe 72 is downward, and the inlet of the dissolution tank 20 is upward.
The bentonite conveying equipment, the valve of the compressed air supply pipeline and the white water pump are synchronously started, bentonite in the bentonite conveying pipeline is accelerated to be blown into the dissolving tank under the action of compressed air, water vapor cannot rise, the bentonite is prevented from being adhered to the inner wall of the bentonite conveying channel, water columns are formed around the bentonite conveying pipeline by the ultra-clean water through the nozzles, caking is prevented from being generated, a PAM solution is stirred through a stirring device (not shown in the figure), and the dissolution of PAM is accelerated.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The bentonite preparation and adding system in the papermaking process is characterized by comprising a pre-dispersing tank, a dissolving tank and a finished product tank, wherein the pre-dispersing tank is provided with a first feed port A, a first feed port B and a first discharge port, the first discharge port is a self-flow discharge port, the dissolving tank is provided with a second feed port and a second discharge port, the second discharge port is an overflow discharge port, the finished product tank is provided with a third feed port and a third discharge port, the third discharge port is a self-flow discharge port, the first feed port A is communicated with a bentonite storage device, the first feed port B is communicated with a super-clean water pool of a paper machine, the third discharge port is higher than the feed port of a pulp pool of the paper machine and is mutually communicated, and the temperature of the super-clean water is 40-50 ℃;
a powder conveying device is arranged between the bentonite storage device and the first feed inlet A, and a white water pump is arranged between the super-clean water tank and the first feed inlet B;
the device also comprises a bentonite conveying pipeline for conveying the bentonite and a compressed air conveying pipeline for introducing compressed air into the bentonite conveying pipeline, wherein an inlet of the bentonite conveying pipeline is connected with the powder conveying equipment, an outlet of the compressed air conveying pipeline is positioned in the bentonite conveying pipeline, and the outlet of the bentonite conveying pipeline and the outlet of the compressed air conveying pipeline face the same direction;
the bentonite conveying pipeline is a bending pipeline, and the compressed air conveying pipeline penetrates through the corner of the bentonite conveying pipeline;
the device also comprises a super-clean water conveying pipeline for conveying super-clean water and a plurality of nozzles for spraying the super-clean water, wherein the inlet of the super-clean water conveying pipeline is communicated with the white water pump, the plurality of nozzles are arranged around the bentonite conveying pipeline, the inlets of the plurality of nozzles are communicated with the outlets of the super-clean water conveying pipeline, and the outlets of the plurality of nozzles face the same direction as the outlets of the bentonite conveying pipeline;
the pre-dispersing tank is arranged on the outer side of the bentonite conveying pipeline, the pre-dispersing tank is provided with a first port and a second port, the first port and the outlet of the bentonite conveying pipeline face the same direction, the second port and the outlet of the bentonite conveying pipeline face the opposite direction, the first port is provided with a water distribution plate, the water distribution plate is provided with a first avoidance mounting hole for the bentonite conveying pipeline to pass through and a plurality of water spraying holes uniformly distributed around the first avoidance mounting hole, the plurality of nozzles are respectively arranged on the plurality of water spraying holes, the second port is provided with a plugging plate, the plugging plate is provided with a second avoidance mounting hole for the bentonite conveying pipeline to pass through, and the outlet of the ultra-clean water conveying pipeline is connected with the side wall of the pre-dispersing tank;
the outlet of the bentonite conveying pipeline is communicated with the inlet of the dissolving tank;
bentonite in the bentonite conveying pipeline is blown into the dissolving tank under the action of compressed air, and super-clean water forms a water column around the bentonite conveying pipeline through the nozzle.
2. The bentonite preparation and adding system according to claim 1, wherein the dissolving tank is provided directly below the pre-dispersing tank.
3. The bentonite preparing and adding system according to claim 1, wherein the finishing tank is provided below the side of the dissolving tank.
4. The bentonite making and adding system according to claim 1, wherein said slurry tank is disposed laterally below said finishing tank.
5. The bentonite preparation and adding system according to claim 1, wherein the first feed port a and the first feed port B are respectively disposed on two opposite side walls of the pre-dispersion tank, the first feed port a and the first feed port B are close to the top of the pre-dispersion tank, the first discharge port is disposed at the bottom of the pre-dispersion tank, the second feed port is disposed at the top of the dissolution tank, the second discharge port is disposed on the side wall of the dissolution tank, the third feed port is disposed at the top of the final product tank, the third discharge port is disposed on the side wall of the final product tank, and the third discharge port is close to the bottom of the final product tank.
6. The bentonite preparing and adding system according to claim 1, wherein a dissolving stirrer is arranged in the dissolving tank, and a finished product stirrer is arranged in the finished product tank.
7. A method for preparing and adding bentonite in a papermaking process, which is characterized by adopting the bentonite preparing and adding system as claimed in any one of claims 1 to 6, and comprising the following steps:
(1) Delivering bentonite in the bentonite storage device and the ultra-clean water in the ultra-clean water pool into the pre-dispersing tank to obtain a first bentonite solution;
(2) Automatically flowing the first bentonite solution in the pre-dispersing tank into the dissolving tank to obtain a second bentonite solution;
(3) Overflowing the second bentonite solution in the dissolving tank into the finished product tank to obtain a third bentonite solution;
(4) And automatically flowing the third bentonite solution in the finished product tank to the slurry pond.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110162291.4A CN112962347B (en) | 2021-02-05 | 2021-02-05 | Bentonite preparation and addition system and preparation and addition method in papermaking process |
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| CN202110162291.4A CN112962347B (en) | 2021-02-05 | 2021-02-05 | Bentonite preparation and addition system and preparation and addition method in papermaking process |
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| CN112962347B true CN112962347B (en) | 2023-05-16 |
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| CN204317474U (en) * | 2014-12-29 | 2015-05-13 | 安徽中烟再造烟叶科技有限责任公司 | Papermaking-method reconstituted tobaccos assistant feeding device |
| CN206027726U (en) * | 2016-08-23 | 2017-03-22 | 富毅特（上海）环保科技有限公司 | Bentonite processing system |
| CN210097574U (en) * | 2019-05-07 | 2020-02-21 | 河南江河纸业股份有限公司 | Whole preparation station of bentonite |
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