CN112853799A - High-positive-charge adsorption film forming net cleaning system and method - Google Patents
High-positive-charge adsorption film forming net cleaning system and method Download PDFInfo
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- CN112853799A CN112853799A CN202110204172.0A CN202110204172A CN112853799A CN 112853799 A CN112853799 A CN 112853799A CN 202110204172 A CN202110204172 A CN 202110204172A CN 112853799 A CN112853799 A CN 112853799A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 28
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000012459 cleaning agent Substances 0.000 claims abstract description 33
- 238000005507 spraying Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000011084 recovery Methods 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 6
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 5
- 235000013312 flour Nutrition 0.000 claims description 34
- 239000012535 impurity Substances 0.000 claims description 10
- 229920000642 polymer Polymers 0.000 claims description 8
- 150000001450 anions Chemical class 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000001802 infusion Methods 0.000 claims 2
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/32—Washing wire-cloths or felts
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Abstract
The invention relates to a high-positive charge adsorption film-forming net cleaning system and a method, belonging to the field of papermaking, and the system comprises: the cleaning agent barrel is connected with the first metering pump through a pipeline, an inlet of the first tee joint is respectively connected with the first metering pump and the papermaking circulating water tank through a pipeline, an outlet of the first tee joint is connected with the second metering pump, the second metering pump is connected with the second tee joint, the second tee joint is respectively connected with the net spraying pipe and the guide roller spraying pipe through a pipeline, the recovery tank is positioned below the net spraying pipe and the guide roller spraying pipe, and the recovery tank is connected with the papermaking circulating water tank through a pipeline. The method comprises the following steps: mixing the cleaning agent with circulating water, spraying with a spray pipe, adjusting temperature, collecting spray liquid, and recycling. The invention can solve the problem of adhesion and blockage of paper pulp stickies, thereby reducing the amount of dried steam and reducing the waste of electric energy.
Description
Technical Field
The invention relates to the field of papermaking, in particular to a high-positive-charge adsorption film-forming net cleaning system and a high-positive-charge adsorption film-forming net cleaning method.
Background
The papermaking industry is a user with large energy consumption, the electric consumption is one of the resource consumption, the resource saving is the requirement for building a resource-saving environment-friendly society, the examination on how to reduce the resource waste is also the test facing the papermaking industry, and along with the improvement of the environmental awareness of people, the energy saving and emission reduction are also the basis of the sustainable development of the papermaking industry.
The papermaking net is one of the main forming and dewatering processes, the net rotates constantly, the prepared pulp is sprayed constantly onto the net surface at the end of the net, the water in the pulp is drained through the net holes, and the pulp can not pass through the net holes and is left on the net surface to form paper. Since the pulp contains some impurities such as stickies, the impurities slowly stick to the wire surface, causing difficulty in dewatering and causing an increase in steam consumption during drying. Therefore, the above-described problems need to be solved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a high-positive-charge adsorption film-forming net cleaning system and a high-positive-charge adsorption film-forming net cleaning method, and solves the problem that impurities in pulp are adsorbed on the net surface to cause difficulty in dehydration.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a high positive charge adsorption film-forming net cleaning system, which comprises a cleaning agent barrel, a papermaking circulating water tank, a first metering pump, a second metering pump, a first tee joint, a second tee joint, a net spraying pipe, a guide roller spraying pipe and a recovery tank, wherein an outlet of the cleaning agent barrel is connected with an inlet of the first metering pump through a first pipeline, an outlet of the first metering pump is connected with a first inlet of the first tee joint through a second pipeline, an outlet of the papermaking circulating water tank is connected with a second inlet pipeline of the first tee joint through a third pipeline, an outlet of the first tee joint is connected with an inlet pipeline of the second metering pump through a fourth pipeline, an outlet of the second metering pump is connected with a first inlet of the second tee joint through a fifth pipeline, a first outlet of the second tee joint is connected with an inlet pipeline of the net spraying pipe through a sixth pipeline, and a second outlet of the second tee joint is connected with an inlet pipeline of the guide roller spraying pipe through a seventh pipeline, the recovery tank is positioned below the mesh spray pipe and the guide roller spray pipe, and the bottom outlet of the recovery tank is connected with the inlet of the papermaking circulating water tank through an eighth pipeline.
The invention has the preferable technical scheme that the net spraying pipe comprises a surface net spraying pipe, a core net spraying pipe, a bottom net spraying pipe and a first cross joint, the pipe walls of the surface net spraying pipe, the core net spraying pipe and the bottom net spraying pipe are provided with spraying holes, the inlet of the first cross joint is connected with the outlet of a second cross joint through a pipeline, the inlet of the surface net spraying pipe is connected with the first outlet of the first cross joint through a ninth pipeline, the inlet of the core net spraying pipe is connected with the second outlet of the first cross joint through a tenth pipeline, and the inlet of the bottom net spraying pipe is connected with the third outlet of the first cross joint through an eleventh pipeline.
The invention preferably adopts the technical scheme that the flour net spray pipe is arranged above the flour net and comprises a flour net rotary spray head, a flour net first pipe, a flour net second pipe, a flour net third pipe and a flour net fourth pipe, wherein the flour net first pipe, the flour net second pipe, the flour net third pipe and the flour net fourth pipe form a rectangular structure, the rectangular structure is matched with the flour net in shape, spray holes of the flour net first pipe, the flour net second pipe, the flour net third pipe and the flour net fourth pipe face the flour net direction, the flour net rotary spray head is positioned in the center of the rectangular structure, and a liquid delivery opening end of the flour net rotary spray head is fixedly connected with an opening end of the ninth pipeline.
The core net spray pipe is arranged above the core net, the surface net spray pipe comprises a core net first pipe, a core net second pipe, a core net third pipe and a core net fourth pipe, the core net first pipe, the core net second pipe, the core net third pipe and the core net fourth pipe form a rectangular structure, the rectangular structure is matched with the core net in shape, and spray openings of the core net first pipe, the core net second pipe, the core net third pipe and the core net fourth pipe face the direction of the core net.
The invention has the preferable technical scheme that the bottom net spray pipe is arranged below the bottom net and comprises a bottom net rotary spray head, a bottom net first pipe, a bottom net second pipe, a bottom net third pipe and a bottom net fourth pipe, wherein the bottom net first pipe, the bottom net second pipe, the bottom net third pipe and the bottom net fourth pipe form a rectangular structure, the rectangular structure is matched with the bottom net in shape, spray holes of the bottom net first pipe, the bottom net second pipe, the bottom net third pipe and the bottom net fourth pipe face the bottom net direction, the bottom net rotary spray head is positioned in the center of the rectangular structure, and a liquid delivery port end of the bottom net rotary spray head is fixedly connected with an open end of an eleventh pipeline.
The invention preferably adopts the technical scheme that the inner wall of the fifth pipeline is provided with a mixing fin and baffle structure.
The invention preferably adopts the technical scheme that the filter is arranged in the fifth pipeline.
A cleaning method for a high-positive-charge adsorption film-forming net comprises the following steps:
s00: the cleaning agent is mixed with the circulating water of the papermaking circulating water pool to form a first type of mixed liquid;
s10: regulating the inlet temperature of the first mixed liquid to 25-35 ℃, pumping the first mixed liquid into a spray pipe to fully spray the net surface and the guide roller, wherein the cleaning agent is a polymer with high positive charges, the polymer can adsorb anions in the pulp and is deposited on the net surface and the guide roller, so that a layer of compact and uniform protective film is formed on the net surface and the surface of the guide roller, impurities such as sticky matters with charges in paper pulp are prevented from being stuck on the net surface and the guide roller, and a film is wrapped on the surface of a net wire, so that the blockage of meshes is avoided;
s20: collecting a first type of mixed liquid dripped from the net surface and the guide roller during spraying;
s30: the collected first mixed liquid enters a circulating water pool to be used as circulating water for recycling.
The invention preferably adopts the technical scheme that in the step S00, the volume fraction of the cleaning agent of the first mixed liquid is 0.01-0.05%.
The invention preferably adopts the technical scheme that in the step S10, the spray pipe adopts a low-pressure spray mode.
The invention has the beneficial effects that:
the invention adopts a high-positive charge adsorption film-forming net cleaning system and a method, the cleaning agent with high positive charge is added into a papermaking process system, and the cleaning agent is fully and continuously sprayed on a surface net and a guide roller, so that a layer of film deposition is formed on the surfaces of the surface net and the guide roller, adhesive substances of paper pulp can not be adhered to the surfaces of the surface net and the guide roller, and the paper can be kept clean and not blocked all the time in the production process, so that the paper is easier to dewater during forming, the steam consumption during drying is reduced, the electric energy waste is reduced, the developed new product is more environment-friendly and more electric energy-saving, the electric energy consumption is saved by 20Kwh/T paper, the proportion is reduced by 25 percent, the cost is lower, the high-positive charge adsorption film-forming net cleaning system and the method are.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a cleaning system for a high-positive-charge adsorption film-forming web according to the present invention.
FIG. 2 is a schematic block diagram of the process flow of the cleaning method of the high-positive-charge adsorption film forming web of the invention. In the figure:
1. a cleaning agent barrel; 2. a papermaking circulating water tank; 3. a first metering pump; 4. a second metering pump; 5. a first tee joint; 6. a second tee joint; 7. a net shower; 71. a surface net spray pipe; 72. a core mesh spray pipe; 73. a bottom screen shower; 74. a first cross; 8. a guide roller spray pipe; 9. a recovery tank.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1, the high-positive-charge adsorption film-forming web cleaning system provided in this embodiment includes a cleaning agent barrel 1, a paper-making circulating water tank 2, a first metering pump 3, a second metering pump 4, a first tee joint 5, a second tee joint 6, a web spray pipe 7, a guide roller spray pipe 8 and a recovery tank 9, an outlet of the cleaning agent barrel 1 is connected with an inlet of the first metering pump 3 through a first pipeline, an outlet of the first metering pump 3 is connected with a first inlet of the first tee joint 5 through a second pipeline, an outlet of the paper-making circulating water tank 2 is connected with a second inlet pipeline of the first tee joint 5 through a third pipeline, an outlet of the first tee joint 5 is connected with an inlet pipeline of the second metering pump 4 through a fourth pipeline, an outlet of the second metering pump 4 is connected with a first inlet of the second tee joint 6 through a fifth pipeline, a first outlet of the second tee joint 6 is connected with an inlet pipeline of the web spray pipe 7 through a sixth pipeline, a second outlet of the second tee joint 6 is connected with an inlet pipeline of the guide roller spray pipe 8 through a seventh pipeline, the recovery tank 9 is positioned below the mesh spray pipe 7 and the guide roller spray pipe 8, and a bottom outlet of the recovery tank 9 is connected with an inlet of the papermaking circulating water tank 2 through an eighth pipeline. The pipeline adds manometer and temperature instrument, monitoring system sprays the operation process and whether stable, thereby ensure the effect of keeping a public place clean, cleaning agent bucket 1 adds cleaning agent regularly in the production process, guarantee that the process of shining is not interrupted, papermaking circulating water pond 2 comes from the plain boiled water pond of papermaking technology, full recycle, and circulating cleaning agent also can act on whole plain boiled water solution, to other system module the improvement effect of keeping a public place clean of same play, not only be limited to the dehydration process, the accumulator is responsible for collecting the spray solution that contains cleaning agent that flows down from net, deflector roll, thereby reduce the consumption of cleaning agent.
In order to fully reduce the adsorption of colloid impurities on the surface of paper and spray a cleaning agent more uniformly, the net spray pipe 7 comprises a surface net spray pipe 71, a core net spray pipe 72, a bottom net spray pipe 73 and a first cross 74, the pipe walls of the surface net spray pipe 71, the core net spray pipe 72 and the bottom net spray pipe 73 are provided with spray openings, the inlet of the first cross 74 is connected with the outlet of the second cross 6 through a pipeline, the inlet of the surface net spray pipe 71 is connected with the first outlet of the first cross 74 through a ninth pipeline, the inlet of the core net spray pipe 72 is connected with the second outlet of the first cross 74 through a tenth pipeline, and the inlet of the bottom net spray pipe 73 is connected with the third outlet of the first cross 74 through an eleventh pipeline.
Specifically, the surface net spray pipe 71 is arranged above a surface net, the surface net spray pipe 71 comprises a surface net first pipe, a surface net second pipe, a surface net third pipe, a surface net fourth pipe and a surface net rotary spray head, the surface net first pipe, the surface net second pipe, the surface net third pipe and the surface net fourth pipe form a rectangular structure, the rectangular structure is matched with the surface net in shape, spray holes of the surface net first pipe, the surface net second pipe, the surface net third pipe and the surface net fourth pipe face the surface net direction, each spray hole is equally spaced by 10 holes, the surface net rotary spray head is located in the center of the rectangular structure, and a liquid delivery port end of the surface net rotary spray head is fixedly connected with an opening end of a ninth pipeline. The flour net spraying pipe 71 sprays flour nets from top to bottom, the flour net rotating spray heads rotate 360 degrees to fully spray the flour net surfaces, and the first pipe to the fourth pipe of the flour nets are responsible for the four sides of the flour nets and spray dead angle positions which can not be contacted by the flour net rotating spray heads.
Specifically, the core net spray pipe is arranged above the core net, the surface net spray pipe comprises a core net first pipe, a core net second pipe, a core net third pipe and a core net fourth pipe, the core net first pipe, the core net second pipe, the core net third pipe and the core net fourth pipe form a rectangular structure, the rectangular structure is matched with the core net in shape, spray holes of the core net first pipe, the core net second pipe, the core net third pipe and the core net fourth pipe face the core net direction, and 10 holes are formed in each of the core net first pipe, the core net second pipe, the core net third pipe and the core net fourth pipe at equal intervals.
Specifically, the bottom net spray pipe is arranged below the bottom net and comprises a bottom net first pipe, a bottom net second pipe, a bottom net third pipe, a bottom net fourth pipe and a bottom net rotary spray head, the bottom net first pipe, the bottom net second pipe, the bottom net third pipe and the bottom net fourth pipe form a rectangular structure, the rectangular structure is matched with the bottom net in shape, spray holes of the bottom net first pipe, the bottom net second pipe, the bottom net third pipe and the bottom net fourth pipe face the bottom net direction, each spray hole is equally spaced by 10 holes, the bottom net rotary spray head is located in the center of the rectangular structure, and a liquid delivery port end of the bottom net rotary spray head is fixedly connected with an open end of an eleventh pipeline. The bottom net spraying pipe 71 sprays the bottom net from bottom to top, the bottom net rotating nozzle rotates 360 degrees to fully spray the surface of the bottom net, and the first to the fourth pipes of the bottom net are responsible for the four sides of the bottom net and spray dead angle positions which can not be contacted by the bottom net rotating nozzle.
Preferably, the inner wall of fifth pipeline sets up mixing fin and baffle structure, after the fluid sent into the fifth pipeline, dams and concentrates through a set of baffling baffle earlier to obtain preliminary mixing, rethread a set of switching-over baffle, make the material divide into the stranded and commutate many times, then rethread another set of baffling baffle group, concentrate through damming many times repeatedly like this, the dispersion switching-over, the cooperation mixes the fin and improves the disturbance of fluid, reaches the purpose of intensive mixing dispersion.
Preferably, including filter 9, filter 9 sets up in the fifth pipeline, be equipped with two-layer filter screen in the filter, impurity mainly derives from papermaking circulating water pond, the first layer filter screen of filter is responsible for keeping apart colloid impurity, adopt silica gel colloid thing to pass through compatibility principle adsorption filtration, the anion impurity is responsible for keeping apart to the second floor filter screen, the filter core adopts strong acid cation fibre electrical property interact to filter, ensure good separation effect, the filter needs periodic replacement, can judge through the change of predetermined pipeline manometer, obvious decline appears when the manometer, it needs in time to change to explain the filter.
Referring to fig. 2, the method for cleaning a high-positive-charge adsorption film-forming web provided in this embodiment includes the following steps:
s00: the cleaning agent is mixed with circulating water of a papermaking circulating water tank to form a first type of mixed liquid, wherein the selected cleaning agent is cleaning agent MF-501 of Weihai Xiangyu mesh cloth, the cleaning agent is stirred and diluted by aqueous solution at 50-60 ℃ before use, the circulating water of the papermaking circulating water tank is white water generated in the papermaking process, and the circulating water is supplied to a plurality of systems of the papermaking process for use;
s10: adjusting the inlet temperature of a first mixed liquid to 25-35 ℃, pumping the first mixed liquid into a spray pipe to fully spray the net surface and the guide roller, wherein the cleaning agent is a polymer with high positive charges, the polymer can adsorb anions (such as metaaluminate ions and sulfate ions) in the pulp and is deposited on the net surface and the guide roller, so that a layer of compact and uniform protective film is formed on the net surface and the surface of the guide roller, impurities such as sticky matters with charges in paper pulp are prevented from being stuck on the net surface and the guide roller, and a film is wrapped on the surface of a net wire and cannot cause the blockage of the net hole;
s20: collecting a first type of mixed liquid dripped from the net surface and the guide roller during spraying;
s30: the collected first mixed liquid enters a circulating water pool to be used as circulating water for recycling.
The cleaning method of the steps adopts the cleaning agent sprayed on the net surface and the guide roller surface, so that the cleaning agent covers the surface comprehensively, the cleaning agent is a polymer with high positive charges, the polymer can adsorb some anions in paper making pulp to form a film, the film does not have charges and can not adsorb sticky matters with charges, and meanwhile, the film uniformly covers the net and the guide roller, so that the sticky matters are effectively prevented from being directly contacted with the surfaces of the net and the guide roller, and the sticky matters can not be stuck on the net and the guide roller. After the treatment, the net and the guide roller can be kept clean all the time in the production process, so that the paper is easier to dewater in the forming process, the steam consumption in the drying process is reduced, and the clean net cleaning paper is produced.
In order to secure the cleaning effect and reduce the production cost, it is preferable that the volume fraction of the cleaning agent of the first type mixed liquid is 0.02% in the step S00.
In order to make the spraying of the cleaning agent more stable and uniform, it is preferable that the spraying pipe adopts a low-pressure spraying manner in the step S10.
The invention designed by combining the preferred scheme achieves the net adhesive amount of 20/m according to the production data compared with the original production scheme2The steam consumption is reduced to 0.02T/T paper.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (10)
1. A high-positive-charge adsorption film-forming net cleaning system is characterized in that:
comprises a cleaning agent barrel (1), a papermaking circulating water tank (2), a first metering pump (3), a second metering pump (4), a first tee joint (5), a second tee joint (6), a net spray pipe (7), a guide roller spray pipe (8) and a recovery tank (9);
the outlet of the cleaning agent barrel (1) is connected with the inlet of the first metering pump (3) through a first pipeline, the outlet of the first metering pump (3) is connected with the first inlet of a first tee joint (5) through a second pipeline, the outlet of the papermaking circulating water tank (2) is connected with the second inlet of the first tee joint (5) through a third pipeline, the outlet of the first tee joint (5) is connected with the inlet pipeline of the second metering pump (4) through a fourth pipeline, the outlet of the second metering pump (4) is connected with the first inlet of the second tee joint (6) through a fifth pipeline, the first outlet of the second tee joint (6) is connected with the inlet pipeline of the net spray pipe (7) through a sixth pipeline, and the second outlet of the second tee joint (6) is connected with the inlet pipeline of the guide roller spray pipe (8) through a seventh pipeline, the recycling groove (9) is located below the net spray pipe (7) and the guide roller spray pipe (8), and the bottom outlet of the recycling groove (9) is connected with the inlet of the papermaking circulating water tank (2) through an eighth pipeline.
2. The cleaning system for the high-positive-charge adsorption film-forming net according to claim 1, wherein:
the net spray pipes (7) comprise a surface net spray pipe (71), a core net spray pipe (72), a bottom net spray pipe (73) and a first four-way joint (74), and spray holes are formed in the pipe walls of the surface net spray pipe (71), the core net spray pipe (72) and the bottom net spray pipe (73);
the inlet of the first four-way joint (74) is connected with the outlet of the second three-way joint (6) through a pipeline, the inlet of the surface net spray pipe (71) is connected with the first outlet of the first four-way joint (74) through a ninth pipeline, the inlet of the core net spray pipe (72) is connected with the second outlet of the first four-way joint (74) through a tenth pipeline, and the inlet of the bottom net spray pipe (73) is connected with the third outlet of the first four-way joint (74) through an eleventh pipeline.
3. The cleaning system for the high-positive-charge adsorption film-forming web according to claim 2, wherein:
the flour net spraying pipe (71) is arranged above the flour net, and the flour net spraying pipe (71) comprises a flour net first pipe, a flour net second pipe, a flour net third pipe, a flour net fourth pipe and a flour net rotary spray head;
the face net first pipe the face net second pipe the face net third pipe with the face net fourth pipe constitutes the rectangle structure, and rectangle structural shape and face net phase-match, the face net first pipe the face net second pipe the face net third pipe with the face net fourth pipe spray the trompil towards the face net direction, the face net rotatory nozzle is located the central authorities of rectangle structural shape, the face net rotatory nozzle's infusion mouth end with the open end fixed connection of ninth pipeline.
4. The cleaning system for the high-positive-charge adsorption film-forming web according to claim 2, wherein:
the core net spraying pipe is arranged above the core net, and the veil spraying pipe comprises a core net first pipe, a core net second pipe, a core net third pipe and a core net fourth pipe;
the first core net pipe, the second core net pipe, the third core net pipe and the fourth core net pipe form a rectangular structure, the shape of the rectangular structure is matched with that of the core net, and the spraying holes of the first core net pipe, the second core net pipe, the third core net pipe and the fourth core net pipe face the direction of the core net.
5. The cleaning system for the high-positive-charge adsorption film-forming web according to claim 2, wherein:
the bottom net spray pipe is arranged below the bottom net and comprises a bottom net first pipe, a bottom net second pipe, a bottom net third pipe, a bottom net fourth pipe and a bottom net rotary spray head;
the first pipe of end net the end net second pipe the end net third pipe with the end net fourth pipe constitutes the rectangle structure, rectangle structural shape and end net phase-match, the first pipe of end net the end net second pipe the end net third pipe with the spray trompil of end net fourth pipe is towards end net direction, end net rotatory nozzle is located the central authorities of rectangle structural shape, end net rotatory nozzle's infusion mouth end with the open end fixed connection of eleventh pipeline.
6. The cleaning system for the high-positive-charge adsorption film-forming net according to claim 1, wherein:
and the inner wall of the fifth pipeline is provided with a mixing fin and a baffle structure.
7. The cleaning system for the high-positive-charge adsorption film-forming net according to claim 1, wherein:
comprises a filter (9);
the filter (9) is arranged in the fifth pipeline.
8. A cleaning method for a high-positive-charge adsorption film-forming net is characterized by comprising the following steps:
s00: the cleaning agent is mixed with the circulating water of the papermaking circulating water pool to form a first type of mixed liquid;
s10: adjusting the inlet temperature of the first mixed liquid to 25-35 ℃, pumping the first mixed liquid into a spray pipe to fully spray the net surface and the guide roller, wherein the cleaning agent is a polymer with high positive charges, the polymer can adsorb anions in the pulp and is deposited on the net surface and the guide roller, so that a layer of compact and uniform protective film is formed on the net surface and the surface of the guide roller, impurities such as sticky matters with charges in paper pulp are prevented from being stuck on the net surface and the guide roller, and a film is wrapped on the surface of a net wire, so that meshes cannot be blocked;
s20: collecting the first mixed liquid dripped from the mesh surface and the guide roller during spraying;
s30: and the collected first type of mixed liquid enters a circulating water pool to be used as circulating water for recycling.
9. The method for cleaning a high-positive-charge adsorption film-forming web according to claim 8, characterized in that:
in the step S00, the volume fraction of the cleaning agent of the first mixed liquid is 0.01-0.05%.
10. The method for cleaning a high-positive-charge adsorption film-forming web according to claim 8, characterized in that:
in step S10, the shower pipe adopts a low-pressure shower mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110204172.0A CN112853799A (en) | 2021-02-23 | 2021-02-23 | High-positive-charge adsorption film forming net cleaning system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110204172.0A CN112853799A (en) | 2021-02-23 | 2021-02-23 | High-positive-charge adsorption film forming net cleaning system and method |
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| CN203451934U (en) * | 2013-08-27 | 2014-02-26 | 浙江荣成纸业有限公司 | Clean-keeping device for papermaking dry net |
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