CN210140734U - Production system of household paper - Google Patents
Production system of household paper Download PDFInfo
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- CN210140734U CN210140734U CN201920857164.4U CN201920857164U CN210140734U CN 210140734 U CN210140734 U CN 210140734U CN 201920857164 U CN201920857164 U CN 201920857164U CN 210140734 U CN210140734 U CN 210140734U
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Abstract
The utility model relates to the technical field of paper making, and discloses a production system of household paper, which comprises a high-concentration pulping device, a low-concentration pulping device and a paper making device, wherein the two pulping devices are respectively connected with the paper making device; the high-concentration pulping equipment comprises a first crushing device, a concentration device, a first pulp grinding device and a first pulp storage device which are sequentially communicated along the direction of material flow; the low-concentration pulping equipment comprises a second crushing device, a second pulping device and a second pulp storage device which are sequentially communicated along the direction of material flow; the papermaking equipment comprises a pulp mixing device and a dewatering device, wherein pulp from the pulp mixing device is formed and dewatered in the dewatering device; the pulp from the first refining device goes to a second crushing device and a first pulp storage device respectively; the slurries from the two slurry reservoirs are mixed in a slurry mixing device. The system has improved the paper pulp utilization ratio and has reduced the energy consumption among the paper pulp dehydration process.
Description
Technical Field
The utility model relates to a papermaking technology field, concretely relates to production system of household paper.
Background
The papermaking technology is closely related to the social and economic development and the people's life, and the papermaking industry is the internationally recognized ' never failing ' industry.
It is well known that the paper industry is one of the major industries responsible for industrial pollution. In the traditional paper making process, the paper pulp production stage is the main stage of pollution generation in the paper making process, not only a large amount of waste gas and waste liquid are generated, but also a large amount of steam is required to be used in various cooking processes adopted in the paper pulp production stage, so that a large amount of water, electricity, fuel and the like are consumed. Furthermore, wood resources in China at present can not meet the requirements of the pulp and paper making industry which is increasingly developed, and a considerable amount of paper pulp needs to be imported from foreign countries every year in order to make up for the shortage of raw materials. Therefore, the continuous development of the paper making industry is the direction of the efforts to improve the utilization rate of the paper pulp and save energy and reduce consumption.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a production system of household paper to improve the paper pulp utilization ratio and reduce the energy consumption among the paper pulp dehydration process.
In order to realize the above purpose, the utility model provides a production system of domestic paper, this system include concentration slurrying device, low concentration pulping equipment and papermaking equipment, high concentration pulping equipment with low concentration pulping equipment respectively through the pipeline with papermaking equipment connects.
The high-concentration pulping equipment comprises a first crushing device, a concentration device, a first pulp grinding device and a first pulp storage device which are sequentially communicated along the direction of material flow.
The low-concentration pulping equipment comprises a second crushing device, a second pulp grinding device and a second pulp storage device which are sequentially communicated along the direction of material flow.
The papermaking apparatus includes a slurry mixing device and a dewatering device in which pulp from the slurry mixing device is formed and dewatered.
The pulp from the first refining device goes to the second crushing device and the first pulp storage device respectively; the slurry from the first slurry storage device and the second slurry storage device is mixed in the slurry mixing device.
Preferably, the first crushing device comprises a plurality of first automatic feeding systems, a first low consistency pulper and a fluff milling forebay, wherein the first low consistency pulper corresponds to the first automatic feeding systems one by one, the first automatic feeding systems are used for conveying pulp plates to the first low consistency pulper, and the fluff milling forebay is used for storing pulp from the first low consistency pulper.
Preferably, the concentration device comprises a double-cylinder press for concentrating the pulp from the fluff milling front pool.
Preferably, the first refining means includes a high consistency refiner for refining concentrated pulp and a high consistency post-refining tank for storage.
Preferably, the first pulp storage device is a short fiber pulp storage tower for storing the high-concentration pulp after refining.
Preferably, the second crushing device comprises a plurality of second automatic feeding systems, a second low consistency pulper corresponding to the plurality of second automatic feeding systems one by one, and a long fiber grinding forebay, wherein the second automatic feeding systems are used for conveying pulp plates to the second low consistency pulper, and the long fiber grinding forebay is used for storing pulp from the second low consistency pulper.
Preferably, the second refining means comprises a low consistency refiner for refining pulp from the long fiber grinding front pond and partially returning the pulp to the long fiber grinding front pond.
Preferably, the second pulp storage device is a long fiber pulp storage tower for storing the low-concentration pulp after being refined.
Preferably, the dewatering device includes a wire dewatering device for removing most of the water in the pulp and preliminarily forming a wet sheet, a shoe press dewatering device for press-dewatering the wet sheet, and a drying device for drying the wet sheet treated by the shoe press dewatering device.
The production system of the utility model realizes the mixed paper making of low-concentration paper pulp and high-concentration paper pulp in the production process of household paper by respectively leading the pulp from the first pulp grinding device to the second crushing device and the first pulp storage device and mixing the pulp from the first pulp storage device and the second pulp storage device in the pulp mixing device, improves the utilization rate of the paper pulp, and further reduces the pollutant emission caused by the paper pulp production and saves the production cost; the shoe press dehydration device is adopted in the papermaking equipment to press and dehydrate the wet paper pages, so that the water content of the wet paper pages after press dehydration is reduced, the steam consumption in the subsequent wet paper page drying process is greatly reduced, and the purpose of energy conservation is achieved.
Drawings
FIG. 1 is a schematic diagram of a system according to the present invention;
fig. 2 is a block flow diagram of the system of the present invention.
Description of the reference numerals
1 high-concentration pulping equipment and 2 low-concentration pulping equipment
3 first reducing mechanism of paper making equipment 11
12 concentration device 13 first refining device
14 first pulp storage device 21 second crushing device
22 second refining means 23 second stock storage means
31 slurry mixing device 32 dewatering device
111 first automatic feeding system 112 first low consistency pulper
113 short fiber grinding forebay 121 first slag remover
122 double-cylinder press 131 high-consistency pulping machine
132 high concentration grinding rear pool 211 second automatic feeding system
212 second Low consistency pulper 213 Long fiber milling forebay
221 second slag separator 222 low-concentration pulping machine
321 fan pump 322 pressure screen
323 wire section dewatering device 324 shoe press dewatering device
325 drying device 326 paper winding device
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
The utility model provides a production system of household paper, figure 1 is the utility model discloses the schematic diagram of system. Referring to fig. 1, the system comprises a high-consistency pulping device 1, a low-consistency pulping device 2 and a papermaking device 3, wherein the high-consistency pulping device 1 and the low-consistency pulping device 2 are respectively connected with the papermaking device 3 through pipelines.
The high-consistency pulping equipment 1 comprises a first crushing device 11, a concentration device 12, a first pulp refining device 13 and a first pulp storage device 14 which are sequentially communicated along the direction of material flow.
The low-consistency pulping equipment 2 comprises a second crushing device 21, a second refining device 22 and a second pulp storage device 23 which are sequentially communicated along the material flow direction.
The papermaking apparatus 3 comprises a pulp mixing device 31 and a dewatering device 32, and the pulp from the pulp mixing device 31 is formed and dewatered in the dewatering device 32.
The pulp from the first refining means 13 goes to the second crushing means 21 and the first pulp storage means 14, respectively; the slurries from the first slurry storage 14 and the second slurry storage 23 are mixed in the slurry mixing device 31.
The system of the utility model realizes the mixed paper making of low-concentration paper pulp and high-concentration paper pulp in the production process of household paper by respectively going the pulp from the first pulp grinding device 13 to the second crushing device 21 and the first pulp storage device 14 and mixing the pulp from the first pulp storage device 14 and the second pulp storage device 13 in the pulp mixing device 31, improves the utilization rate of the paper pulp, and further reduces the pollutant emission caused by the paper pulp production and saves the production cost; in the papermaking equipment 3, the shoe press dehydration device 324 is adopted to press and dehydrate the wet paper sheet, so that the water content of the wet paper sheet after press dehydration is reduced, the steam consumption in the subsequent wet paper sheet drying process is greatly reduced, and the purpose of energy conservation is achieved.
Preferably, the first crushing device 11 comprises a plurality of first automatic feeding systems 111, a first low consistency pulper 112 and a fluff milling front pool 113 corresponding to the plurality of first automatic feeding systems 111 one by one, the first automatic feeding systems 111 are used for conveying pulp plates to the first low consistency pulper 112, and the fluff milling front pool 113 is used for storing pulp from the first low consistency pulper 112.
Specifically, the first crushing device 11 comprises three first automatic feeding systems 111, and the first automatic feeding systems 111 realize automatic feeding of pulp sheets, so that repeated manual and mechanical labor is avoided, the production efficiency is improved, and the labor cost is saved; the first low consistency pulper 112 is used for performing hydraulic pulping on pulp sheets to prepare pulp with the concentration of 5-8 wt%, and the pulp from the three first low consistency pulpers 112 is conveyed to the fluff pulp grinding front pool 113 for storage.
Preferably, the concentration device 12 comprises a double cylinder press 122, and the double cylinder press 122 is used for concentrating the pulp from the fluff milling front pool 113.
In particular, the concentration device 12 comprises two of the double cylinder presses 122.
The double cylinder pulper 122 concentrates the pulp from the fluff milling headbox 113 to produce a pulp concentration of 18-25 wt%.
Further, the concentration device 12 further includes a first slag remover 121, and the pulp from the fluff milling front pool 113 is subjected to slag removal by the first slag remover 121 before entering the double cylinder mould press 122.
In one embodiment, the first de-sludger 121 is a centrifugal separator that centrifugally de-sludges the slurry from the fluff mill forebay 113 to avoid clogging subsequent equipment. In other embodiments, the first slag separator 121 is not limited to a centrifugal separator as long as it can perform a slag removing function, such as a plate and frame filter.
Preferably, the first refining apparatus 13 includes a high consistency refiner 131 and a high consistency post-refining pit 132, and the high consistency refiner 131 refines the concentrated pulp and is stored in the high consistency post-refining pit 132.
Specifically, the high consistency refiner 131 corresponds to the double cylinder refiner one by one, and the high consistency post-refining pool 132 corresponds to the high consistency refiner 131 one by one.
The high consistency refiner 131 grinds the pulp concentrated by the double-cylinder refiner to make the pulp meet the paper making condition, and the high consistency post-grinding tank 132 is used for storing the pulp subjected to the pulp grinding.
Further, the slurry stored in the high consistency grinding post-tank 132 is sent to the long fiber grinding pre-tank 213 and the first slurry storage device 14, respectively, and one-time mixing of the low consistency slurry and the high consistency slurry is realized.
Preferably, the first pulp storage device 14 is a short fiber pulp storage tower for storing the high-concentration pulp after refining.
Preferably, the second crushing device 21 comprises a plurality of second automatic feeding systems 211, a second low consistency pulper 212 corresponding to the plurality of second automatic feeding systems 211 one by one, and a long fiber pre-milling pond 213, wherein the second automatic feeding systems 211 are used for conveying pulp plates to the second low consistency pulper 212, and the long fiber pre-milling pond 213 is used for storing pulp from the second low consistency pulper 212.
Specifically, the second crushing device 21 includes two second automatic feeding systems 211, only one of which is shown in fig. 1, and the second automatic feeding systems 211 realize automatic feeding of pulp sheets, so that repeated manual labor is avoided, production efficiency is improved, and labor cost is saved; the second low consistency pulpers 212 are used for hydraulic pulping of pulp sheets to form pulp with a consistency of 5-8 wt%, and the pulp from the two second low consistency pulpers 212 is sent to the fluff mill forebay 213 for storage.
Preferably, the second refining apparatus 22 comprises a low consistency refiner 222, and the low consistency refiner 222 is used for refining the pulp from the long fiber grinding front pool 213, and the pulp obtained after refining partially flows back to the long fiber grinding front pool 213.
The low consistency refiner 222 is configured to refine the pulp from the long fiber mill fore-pit 213 so as to have a paper-making condition, and partially return the pulp to the long fiber mill fore-pit 213.
Further, the second refining apparatus 22 further includes a second slag remover 221, and the pulp from the long fiber grinding front tank 213 is subjected to slag removal by the second slag remover 221 before entering the low consistency refiner 222.
In one embodiment, the second cleaner 221 is a centrifugal separator that centrifugally removes slurry from the filament mill forehearth 213 to avoid clogging subsequent equipment. In other embodiments, the second slag separator 221 is not limited to a centrifugal separator, as long as it can perform a slag removing function, such as a plate-and-frame filter.
Preferably, the second pulp storage device 23 is a long fiber pulp storage tower for storing the low-consistency pulp after refining.
Preferably, the dewatering device 32 includes a wire part dewatering device 323, a shoe press dewatering device 324 and a drying device 325, the wire part dewatering device 323 is used for removing most of water in the pulp and preliminarily forming a wet paper sheet, the shoe press dewatering device 324 is used for press dewatering the wet paper sheet, and the drying device 325 is used for drying the wet paper sheet processed by the shoe press dewatering device 324.
Specifically, the pulp from the short fiber pulp storage tower and the long fiber pulp storage tower is mixed in the pulp mixing device 31, so that the secondary mixing of the low-concentration pulp and the high-concentration pulp is realized, wherein the pulp mixing device 31 is a pre-papermaking tank, namely a pulp forming tank, and the fiber proportion, the concentration and the like of the pulp in the pre-papermaking tank are quite stable and meet the papermaking requirements of paper.
Further, the dewatering device 32 further comprises a fan pump 321 and a pressure screen 322, and the pulp from the pre-papermaking pond and the thick white water are mixed and pumped to the pressure screen 322 through the fan pump 321 to screen out impurities in the pulp, so that the paper quality is ensured; the pulp filtered by the pressure screen 322 enters the wire part dehydration device 323, in the wire part dehydration device 323, the pulp goes on the wire to remove most of water, wet paper is primarily formed, and then enters the shoe press dehydration device 324, the wet paper is transferred and dehydrated by using a felt, then is pressed and dehydrated at the shoe press roll, and finally enters the drying device 325, and the wet paper is dried to the water content required by the base paper.
Further, the dewatering device 32 further includes a paper winding device 326, and the base paper processed by the drying device 325 enters the paper winding device 326 to be wound into a large roll.
Fig. 2 is a block flow diagram of the system of the present invention. In a specific embodiment of the system, first automatic material device 111 is carried the pulp board extremely in first low dense pulper 112, carry out the water conservancy to the pulp board and break into the thick liquids that concentration is 5-8 weight percent, and then carry extremely store in the short fiber mill fore-tank 113, get into after centrifugal separator carries out centrifugal slag removal to thick liquids again double-cylinder mould pulp press 122 is concentrated, makes the thick liquids that concentration is 18-25 weight percent, and the thick liquids after concentrating get into high concentration fiberizer 131 grinds thick liquid, then gets into high concentration mill after-tank 132 stores, comes from the thick liquids of high concentration mill after-tank 132 are respectively to long fiber mill fore-tank 213 with short fiber stores up the thick liquid tower, has realized the storage of the primary mixing of high concentration thick liquids and low concentration thick liquids and high concentration thick liquids respectively. The second automatic feeding device 211 conveys the pulp board into the second low-consistency pulper 212, performs hydraulic disintegration on the pulp board to prepare pulp with the concentration of 5-8 wt%, and further conveys the pulp board into the long fiber grinding forebay 213 for storage, then enters the low-consistency pulping machine 222 for pulping after centrifugal deslagging of the pulp through a centrifugal separator, and part of the pulp obtained after pulping returns to the long fiber grinding forebay 213, and the rest of the pulp enters the long fiber pulp storage tower for storage. High-concentration slurry and low-concentration slurry from the short-fiber slurry storage tower and the long-fiber slurry storage tower are mixed in the pre-papermaking pond, so that secondary mixing of the high-concentration slurry and the low-concentration slurry is realized, the mixed slurry and thick white water are mixed through the fan pump 321 and pumped to the pressure screen 322 for filtering, and then wet paper web primary forming, wet paper web shoe press squeezing dewatering and drying are sequentially performed through wire part dewatering, and finally large roll paper is obtained in the paper rolling device 326.
The system through carry out a lot of to high concentration thick liquids and low concentration thick liquids and mix, improved the paper pulp utilization ratio, and then reduce because of the pollutant emission that paper pulp production leads to and practice thrift manufacturing cost, and the dehydration in-process adopts boots to press and squeezes dehydration and makes water content greatly reduced in the wet paper piece, has reduced steam consumption in the drying process, has reached energy-conserving purpose.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention perform multiple simple modifications, including each technical feature combined in any other suitable manner, these simple modifications and combinations should be regarded as the disclosed content of the present invention, and all belong to the protection scope of the present invention.
Claims (9)
1. The production system of the household paper is characterized by comprising high-concentration pulping equipment (1), low-concentration pulping equipment (2) and papermaking equipment (3), wherein the high-concentration pulping equipment (1) and the low-concentration pulping equipment (2) are respectively connected with the papermaking equipment (3) through pipelines;
the high-concentration pulping equipment (1) comprises a first crushing device (11), a concentration device (12), a first pulp grinding device (13) and a first pulp storage device (14) which are sequentially communicated along the direction of material flow;
the low-concentration pulping equipment (2) comprises a second crushing device (21), a second pulping device (22) and a second pulp storage device (23) which are sequentially communicated along the direction of material flow;
the papermaking plant (3) comprising a pulp mixing device (31) and a dewatering device (32), the pulp from the pulp mixing device (31) being shaped and dewatered in the dewatering device (32);
-the pulp from the first refining means (13) goes to the second crushing means (21) and the first pulp storage means (14), respectively; the slurry from the first slurry storage (14) and the second slurry storage (23) is mixed in the slurry mixing device (31).
2. A production system according to claim 1, characterized in that the first comminution means (11) comprises a number of first automatic feeding systems (111), a first low consistency pulper (112) and a fluff mill forebay (113) in one-to-one correspondence with the number of first automatic feeding systems (111), the first automatic feeding systems (111) being adapted to convey pulp sheets to the first low consistency pulper (112), the fluff mill forebay (113) being adapted to store pulp from the first low consistency pulper (112).
3. A production system according to claim 1, characterized in that the concentration device (12) comprises a double cylinder press (122), the double cylinder press (122) being adapted to concentrate the stock coming from the fluff refining pool (113).
4. A production system according to claim 1, characterized in that the first refining means (13) comprises a high consistency refiner (131) and a high consistency post-refining pit (132), the high consistency refiner (131) refining the concentrated pulp, with the high consistency post-refining pit (132) being used for storage.
5. A production system according to claim 4, characterized in that the first stock arrangement (14) is a fluff pulp storage tower for storing refined high consistency stock.
6. A production system according to claim 1, characterized in that the second comminution means (21) comprises a number of second automatic feeding systems (211), a second low consistency pulper (212) in one-to-one correspondence with the number of second automatic feeding systems (211), and a long fibre milling forebay (213), the second automatic feeding systems (211) being adapted to convey pulp sheets to the second low consistency pulper (212), the long fibre milling forebay (213) being adapted to store pulp coming from the second low consistency pulper (212).
7. A production system according to claim 1, characterized in that the second refining means (22) comprises a low consistency refiner (222), which low consistency refiner (222) is arranged to refine the stock from the long fibre refining front basin (213) and partly return it to the long fibre refining front basin (213).
8. A production system according to claim 7, characterized in that the second stock storage device (23) is a long fibre stock tower for storing low consistency stock after refining.
9. The production system according to claim 1, wherein the dewatering device (32) comprises a wire dewatering device (323), a shoe press dewatering device (324), and a drying device (325), the wire dewatering device (323) being configured to remove a substantial portion of water from the pulp and initially form a wet sheet, the shoe press dewatering device (324) being configured to press dewater the wet sheet, and the drying device (325) being configured to dry the wet sheet after being processed by the shoe press dewatering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920857164.4U CN210140734U (en) | 2019-06-06 | 2019-06-06 | Production system of household paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920857164.4U CN210140734U (en) | 2019-06-06 | 2019-06-06 | Production system of household paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210140734U true CN210140734U (en) | 2020-03-13 |
Family
ID=69734464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920857164.4U Active CN210140734U (en) | 2019-06-06 | 2019-06-06 | Production system of household paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210140734U (en) |
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2019
- 2019-06-06 CN CN201920857164.4U patent/CN210140734U/en active Active
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