CN112811776A - Treatment system and treatment method for papermaking sludge of recycled paper - Google Patents
Treatment system and treatment method for papermaking sludge of recycled paper Download PDFInfo
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- CN112811776A CN112811776A CN202011627067.XA CN202011627067A CN112811776A CN 112811776 A CN112811776 A CN 112811776A CN 202011627067 A CN202011627067 A CN 202011627067A CN 112811776 A CN112811776 A CN 112811776A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
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Abstract
The application relates to a treatment system for papermaking sludge of recycled paper, which comprises a sedimentation tank, a filter pressing device and a drying device which are sequentially arranged; the filter pressing equipment comprises a vertically arranged filter pressing cylinder, an inverted cone-shaped rotating shaft with a vertically arranged axis is rotatably connected in the filter pressing cylinder, a spiral belt with the outer side capable of abutting against the inner peripheral surface of the filter pressing cylinder is fixedly connected to the rotating shaft, the pitch of the spiral belt is gradually reduced from bottom to top, a plurality of water leakage holes are formed in the spiral belt, a driving mechanism capable of driving the rotating shaft to rotate is arranged on the filter pressing cylinder, an inverted cone-shaped heating cavity II is formed in the middle of the rotating shaft along the axis of the rotating shaft, and a heating mechanism II is arranged in; a sludge conveying device capable of conveying sludge to the lower end of the filter pressing cylinder is arranged between the sedimentation tank and the lower end of the filter pressing cylinder; a sludge transfer device is arranged between the upper end of the circumferential surface of the pressure filter cylinder and the drying equipment. This application has the humidity that improves and reduce paper sludge, realizes paper sludge's air-dried effect.
Description
Technical Field
The application relates to the field of recycled paper production, in particular to a system and a method for treating papermaking sludge of recycled paper.
Background
Paper is the most common article in our daily life, and is in contact with paper no matter reading and reading, or writing and drawing, and the paper cannot be separated in industrial, agricultural and national defense industrial production, and the existing paper making equipment can generate a lot of sludge which needs to be treated.
Except that part of the sludge is comprehensively utilized, the rest sludge is subjected to sanitary landfill treatment, and more than 70 mu of land needs to be buried every year, so that land resources are wasted, and secondary pollution is generated. The papermaking sludge belongs to biological solid waste, which not only contains a large amount of cellulose organic matters and plant nutrients such as nitrogen, phosphorus, potassium and the like, but also contains trace heavy metals and pathogenic bacteria. According to the characteristic, the paper sludge can be changed into agricultural fertilizer. The agricultural method comprises the following steps: the sludge is directly used as a soil conditioner after being air-dried.
In view of the above-mentioned related technologies, the inventors believe that although sludge obtained by dewatering sludge from paper mill sludge in the prior art is already dewatered, the air-dried sludge generally has a high humidity and is difficult to use as a soil conditioner.
Disclosure of Invention
In order to improve and reduce the humidity of the papermaking sludge and realize the air drying of the papermaking sludge, the application provides a system and a method for treating the papermaking sludge of recycled paper.
The application provides a processing system of papermaking mud of recycled paper adopts following technical scheme:
a treatment system for papermaking sludge of recycled paper comprises a sedimentation tank, a filter pressing device and a drying device which are sequentially arranged;
the filter pressing equipment comprises a vertically arranged filter pressing cylinder, the filter pressing cylinder is rotationally connected with a reverse conical rotating shaft with a vertically arranged axis, a spiral belt with the outer side capable of abutting against the inner circumferential surface of the filter pressing cylinder is fixedly connected onto the rotating shaft, the thread pitch of the spiral belt is gradually reduced from bottom to top, a plurality of water leakage holes are formed in the spiral belt, a driving mechanism capable of driving the rotating shaft to rotate is arranged on the filter pressing cylinder, a reverse conical heating cavity II is formed in the middle of the rotating shaft along the axis of the rotating shaft, and a heating mechanism II is arranged in the heating cavity II;
a sludge conveying device capable of conveying sludge to the lower end of the filter pressing cylinder is arranged between the sedimentation tank and the lower end of the filter pressing cylinder;
and a sludge transfer device is arranged between the upper end of the peripheral surface of the pressure filter cylinder and the drying equipment.
The following technical scheme is adopted: when in use, paper making sludge can be put into the sedimentation tank for sedimentation, after the sludge in the sedimentation tank settles to the bottom and is layered with water, the sludge in the sedimentation tank is conveyed to the bottom of the filter pressing cylinder by the sludge conveying device, then the rotating shaft is driven to rotate by the driving mechanism, the spiral belt is driven to rotate, thereby the sludge can be lifted upwards from the bottom of the filter pressing cylinder, and the diameter of the upper end of the diameter of the rotating shaft is gradually increased, the screw pitch of the spiral belt is gradually reduced from bottom to top, the space between two adjacent layers of spiral belts is gradually reduced, thereby the sludge is gradually extruded, the water generated in the extrusion process directly permeates downwards through the water leakage holes by self weight, meanwhile, along with the lifting of the sludge, the water is gradually reduced, two pairs of rotating shafts are heated by the heating mechanism in the heating cavity II in the rotating shaft, thereby the sludge is heated by the rotating shaft, and the, the moisture in the silt has been greatly reduced, and the silt after the filter-pressing will be followed the silt transfer device and sent to the further stoving of drying equipment, realize the air-dry of mud, the subsequent use of being convenient for.
Optionally, the diameter of the upper end of the inner wall of the filter pressing cylinder is smaller than that of the lower end of the inner wall of the filter pressing cylinder.
Through adopting above-mentioned technical scheme, the inner wall upper end diameter of the filter-pressing section of thick bamboo that adopts is less than the lower extreme diameter, makes the interior tapered cavity that forms of filter-pressing section of thick bamboo, and then further reduction silt is in the space of filter-pressing section of thick bamboo upper end, realizes the extrusion of silt.
Optionally, a first heating cavity is formed in the upper side inside the wall of the filter pressing cylinder, and a first heating mechanism is arranged in the first heating cavity.
Through adopting above-mentioned technical scheme, the heating mechanism in the heating chamber one that adopts can be further heats the stoving to pressing a silt in straining a section of thick bamboo, reduces its inside moisture.
Optionally, the upper end of the pressure filter cylinder is connected with an exhaust pipe, the exhaust pipe is connected with an air extraction device, and an air outlet of the air extraction device is connected with a purification device.
Through adopting above-mentioned technical scheme, the air exhaust device who adopts can take away the gas that produces when heating in pressing a section of thick bamboo and send purifier to purify.
Optionally, a plurality of drain holes are formed in the lower bottom surface of the pressure filter cylinder, and the lower end of the pressure filter cylinder is connected with a water return tank communicated with the sedimentation tank.
Through adopting above-mentioned technical scheme, the rivers of filter pressing section of thick bamboo internal flow down will flow to the return water tank in through the drain hole of filter pressing section of thick bamboo lower extreme to can make rivers return to in the sedimentation tank.
Optionally, the bottom surface of sedimentation tank slope sets up, silt conveyor includes that vertical setting sets up in the lifting machine of the lower one end position in sedimentation tank bottom surface and level set up the conveyer between lifting machine upper end discharge gate and filter pressing bobbin base portion feed inlet, the bottom of pressing a section of thick bamboo is higher than the upside of sedimentation tank.
Through adopting above-mentioned technical scheme, during operation, the lifting machine can promote the silt of sedimentation tank bottom surface to the conveyer on, then, carry silt to the filter pressing section of thick bamboo in through the conveyer.
Optionally, the conveyor comprises a conveying frame, a conveying belt is arranged on the conveying frame, an extrusion belt parallel to the conveying belt is arranged on the upper side of the conveying frame corresponding to the conveying belt, and water permeable holes are uniformly formed in the conveying belt.
Through adopting above-mentioned technical scheme, promote silt to the conveyer belt of carriage at the lifting machine after, drive the silt along with the conveyer belt and carry, silt will get into between conveyer belt and the extrusion area to realize the preliminary extrusion of silt, discharge more moisture in the silt.
Optionally, the stoving case sets up in the downside of pressing a section of thick bamboo, silt transfer device sets up the conveying line between stoving case and a filter-pressing section of thick bamboo including the slope, the inner wall of conveying line gathers the rigid coupling and has suddenly thorn, conveying line's axis position department is provided with the grinding roller that can rotate in succession, the global even density of grinding roller has sharp thorn.
Through adopting above-mentioned technical scheme, silt after the filter-pressing of a filter pressing section of thick bamboo will directly enter into to conveying pipeline in, then, silt will be through the automatic lower extreme motion to conveying pipeline of dead weight to get into between grinding roller and conveying pipeline's the inner wall, and simultaneously, the grinding roller rotates in succession, and sharp thorn and thorn are mutually supported, will break up once more through the silt of filter-pressing equipment filter-pressing, then drop into to the stoving incasement, and then the stoving of the silt of being convenient for, further reduce its inside moisture.
Optionally, the upper end of the grinding roller is conical and fixedly connected with a spiral rack.
Through adopting above-mentioned technical scheme, the grinding roller upper end of adoption be toper and rigid coupling in helical rack can be in grinding roller and pipeline's inner wall with the quick being drawn into of silt piece after the filter-pressing at grinding roller pivoted in-process to realize breaking scattered of silt piece.
In a first aspect, the application provides a method for treating papermaking sludge of recycled paper, which adopts the following technical scheme:
a method for treating papermaking sludge of recycled paper comprises the following steps:
s1, precipitation: putting the water-containing sludge into a sedimentation tank for sedimentation;
s2, performing primary pressure, after the water and the sludge are precipitated until the water and the sludge are layered, extracting the sludge and performing primary pressure dewatering;
s3, performing filter pressing, namely performing filter pressing on the sludge subjected to the preliminary water removal again, and heating the sludge while performing the filter pressing so as to further reduce the water in the sludge and form sludge blocks;
s4, crushing, and scattering the sludge blocks subjected to pressure filtration;
and S5, drying, and putting the scattered sludge into the drying box again for drying.
Through adopting above-mentioned technical scheme, deposit the initial separation moisture through silt that will contain water, then, carry out the initial pressure with silt and extrude most moisture, through the dewatering that the filter-pressing heating can be further again, at last, break up the stoving again, can realize the air-drying of silt, the subsequent use of being convenient for.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when in use, the papermaking sludge can be put into the sedimentation tank for sedimentation, after the sludge in the sedimentation tank settles to be layered with water, the sludge in the sedimentation tank is conveyed to the bottom of the filter pressing cylinder by the sludge conveying device, then the rotating shaft is driven to rotate by the driving mechanism, the spiral belt is driven to rotate, thereby the sludge can be lifted upwards from the bottom of the filter pressing cylinder, the diameter of the upper end of the diameter of the rotating shaft is gradually increased, the screw pitch of the spiral belt is gradually reduced from bottom to top, the space between two adjacent layers of spiral belts is gradually reduced, thereby the sludge is gradually extruded, the water generated in the extrusion process directly permeates downwards through the water leakage holes by self weight, simultaneously, along with the lifting of the sludge, the water is gradually reduced, and then two pairs of rotating shafts are heated by the heating mechanism in the heating cavity II in the rotating shaft, thereby the sludge is heated by the, the sludge is primarily dried, so that the moisture in the sludge is greatly reduced, and the sludge after filter pressing is conveyed to drying equipment from the sludge conveying device for further drying, so that the air drying of the sludge is realized, and the subsequent use is facilitated;
2. the diameter of the upper end of the inner wall of the adopted pressure filter cylinder is smaller than that of the lower end, so that a conical cavity is formed in the pressure filter cylinder, the space of sludge at the upper end of the pressure filter cylinder is further reduced, and the extrusion of the sludge is realized;
3. silt after a filter-pressing section of thick bamboo filter-pressing will directly enter into to pipeline in, then, silt will be through the dead weight from moving to pipeline's lower extreme motion to get into between grinding roller and pipeline's the inner wall, simultaneously, the grinding roller rotates in succession, and the spine is mutually supported with the thorn suddenly, breaks up the silt through the filter-pressing equipment filter-pressing once more, then drops into to the stoving incasement, and then the stoving of the silt of being convenient for, further its inside moisture that reduces.
Drawings
FIG. 1 is a schematic sectional view showing the overall structure of a system for treating paper sludge for recycling paper according to the present invention.
FIG. 2 is a schematic sectional view of a settling tank structure of a system for treating paper sludge for recycling paper according to the present invention.
FIG. 3 is a schematic cross-sectional view of a press belt configuration of a system for treating paper sludge from recycled paper of the present application.
FIG. 4 is a schematic cross-sectional view of a filter press cartridge of a paper sludge treatment system for regenerating paper according to the present application.
FIG. 5 is a schematic cross-sectional view of a transfer line of a system for treating paper sludge for recycled paper of the present application.
Description of reference numerals: 1. a sedimentation tank; 11. an inclined plate; 2. a filter pressing device; 21. pressing the filter cartridge; 211. a feed inlet; 212. a discharge port; 213. a first heating cavity; 214. a first heating mechanism; 215. an exhaust pipe; 22. a rotating shaft; 221. a second heating cavity; 222. a second heating mechanism; 23. a helical band; 24. a drive mechanism; 25. a water return tank; 26. an air extraction device; 27. a purification device; 3. a drying device; 4. a sludge conveying device; 41. a hoist; 42. a conveyor; 421. a carriage; 422. a conveyor belt; 423. water permeable holes; 424. extruding the belt; 5. a sludge transfer device; 51. a delivery line; 511. a discharge outlet; 52. bur protruding; 53. grinding the roller; 531. pricking with a sharp point; 532. a helical rack.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses papermaking sludge's of recycled paper processing system, including sedimentation tank 1, filter pressing equipment 2 and the drying equipment 3 that set gradually.
The filter pressing device 2 is arranged at the upper side of one end of the gathering part of the sedimentation tank 1. Be provided with between sedimentation tank 1 and the filter pressing equipment 2 and can send silt to the silt conveyor 4 of filter pressing equipment 2 from sedimentation tank 1, silt conveyor 4 includes vertical setting in the lower one end position's of sedimentation tank 1 bottom surface lifting machine 41, and lifting machine 41 can adopt bucket elevator 41 also can adopt spiral elevator 41, takes spiral elevator 41 as an example in this embodiment, and the discharge gate 212 of lifting machine 41 extends the upside of sedimentation tank 1. Silt conveyor 4 still includes the conveyer 42 of horizontal rigid coupling between lifting machine 41 and filter pressing equipment 2, and conveyer 42 includes carriage 421, installs the conveyer belt 422 that one end and 41 discharge gates 212 of lifting machine correspond and the other end and filter pressing equipment 2 correspond on the carriage 421, and the rigid coupling has the driving motor that can drive conveyer belt 422 pivoted (here is no longer repeated for prior art) evenly to offer the hole 423 that permeates water on conveyer belt 422 on the carriage 421. The upper side of the conveying frame 421 corresponding to the conveying belt 422 is provided with an extrusion belt 424, the extrusion belt 424 is parallel to the conveying belt 422, one end of the extrusion belt 424 close to the sedimentation tank 1 is shorter than one end of the conveying belt 422 close to the sedimentation tank 1, and a blanking part is left at the upper end of the conveying belt 422 close to the sedimentation tank 1.
During operation, the lifting machine 41 can lift the sludge on the bottom surface of the sedimentation tank 1 to the conveying belt 422 of the conveyor 42, after the lifting machine 41 lifts the sludge to the conveying belt 422 of the conveying frame 421, the sludge is conveyed along with the driving of the conveying belt 422, and the sludge enters the space between the conveying belt 422 and the squeezing belt 424, so that the preliminary squeezing of the sludge is realized, and more water in the sludge is discharged.
The filter pressing device 2 comprises a vertically arranged filter pressing cylinder 21, the diameter of the upper end of the inner wall of the filter pressing cylinder 21 is smaller than that of the lower end, the lower end of the periphery of the filter pressing cylinder 21 is provided with a feeding hole 211 corresponding to the conveying belt 422, and the upper end of the periphery of the filter pressing cylinder 21 is provided with a discharging hole 212. The rotating shaft 22 with a vertically arranged axis is rotatably connected in the filter pressing cylinder 21, the rotating shaft 22 is in a reverse cone shape, a spiral belt 23 is fixedly connected to the rotating shaft 22, the outer side of the spiral belt 23 can abut against the inner circumferential surface of the filter pressing cylinder 21, the thread pitch of the spiral belt 23 is gradually reduced from bottom to top, a plurality of water leakage holes (not shown in the figure) are formed in the spiral belt 23, the filter pressing cylinder 21 extends out of the upper end of the rotating shaft 22, a driving mechanism 24 capable of driving the rotating shaft 22 to rotate is arranged at the lower end of the filter pressing cylinder 21, and the driving mechanism 24 is a driving motor fixedly connected to the. A plurality of drain holes are formed in the lower bottom surface of the pressure filter cylinder 21, a water return tank 25 is further bolted to the lower end of the pressure filter cylinder 21, and the water return tank 25 is inclined towards the sedimentation tank 1 and communicated with the sedimentation tank 1.
Send the mud in the sedimentation tank 1 to carry to the bottom of a filter pressing section of thick bamboo 21 through mud conveyor, then, drive axis of rotation 22 through actuating mechanism 24 and rotate, it is rotatory to drive helical band 23, thereby can upwards promote silt from the bottom of a filter pressing section of thick bamboo 21, and because axis of rotation 22 diameter upper end diameter is progressively grown, the inner wall of a section of thick bamboo 21 is strained by the upper gradually of the lower, the pitch of helical band 23 is by the upper gradually reduction of the lower, space between adjacent two-layer helical band 23 can reduce gradually, thereby realize the extrusion gradually of silt, and the moisture that produces among the extrusion process will directly permeate downwards through the hole that leaks through the dead weight, discharge from the wash port until, reentrant sedimentation tank 1.
The upper side of the inner part of the wall of the press filter cylinder 21 is provided with a first heating cavity 213, a first heating mechanism 214 is arranged in the first heating cavity 213, and the first heating mechanism 214 can adopt an electric heating rod. The upper end of the inside of the rotating shaft 22 is provided with a second inverted cone-shaped heating cavity 221 along the axis of the rotating shaft, a second heating mechanism 222 is arranged in the second heating cavity 221, and the second heating mechanism 222 can be an electric heating rod. The upper end of the filter pressing cylinder 21 is connected with an exhaust pipe 215, the exhaust pipe 215 is connected with an air extractor 26, and the air outlet of the air extractor 26 is connected with a purifier 27. Along with the promotion of silt, when moisture reduces gradually, heating mechanism 214 heats pivot 22 in the heating chamber 213 in the rethread pivot 22, thereby to the heating of silt through pivot 22, heating mechanism two 222 in the heating chamber two 221 of adoption is further heats the stoving to pressing the interior silt of straining a section of thick bamboo 21, reduce the preliminary drying to silt of its inside moisture, great reduction moisture in the silt, again secondly, the air exhaust device 26 of adoption can take away the gas that produces when pressing a section of thick bamboo 21 interior heating and send to purifier 27 and purify.
The drying device 3 adopts a drying box, the drying box is arranged below one side of the discharge port 212 of the filter pressing cylinder 21, and the discharge port 212 of the filter pressing cylinder 21 and the feed port 211 of the drying box are provided with a sludge transfer device 5. The sludge transfer device 5 comprises a conveying pipeline 51 obliquely arranged between the drying box and the pressure filter cylinder 21, the upper end of the conveying pipeline 51 is communicated with a discharge port 212 of the pressure filter cylinder 21, a discharge port 511 communicated with a feed port 211 of the drying box is fixedly connected to the lower side of the peripheral surface of the conveying pipeline 51, burs 52 are densely distributed and fixedly connected to the inner wall of the conveying pipeline 51, a grinding roller 53 is rotatably connected to the axial position of the conveying pipeline 51, sharp burs 531 are uniformly densely distributed on the peripheral surface of the grinding roller 53, and the upper end of the grinding roller 53 is conical and fixedly connected with a spiral rack 532. The lower end of the grinding roller 53 extends out of the lower end of the conveying pipeline 51 and is fixedly connected with a driving motor capable of driving the grinding roller 53 to rotate, when sludge subjected to pressure filtration through the pressure filter drum 21 directly enters the conveying pipeline 51, then the sludge automatically moves to the lower end of the conveying pipeline 51 through self weight and then enters between the grinding roller 53 and the inner wall of the conveying pipeline 51, meanwhile, the grinding roller 53 continuously rotates, the sharp pricks 531 and the protruding pricks 52 are matched with each other, the sludge subjected to pressure filtration through the pressure filtration equipment 2 is scattered again, and then the sludge is thrown into the drying box, so that the drying of the sludge is facilitated, the moisture in the sludge is further reduced, in addition, the upper end of the adopted grinding roller 53 is conical and fixedly connected to the spiral rack 532, and the sludge blocks subjected to pressure filtration can be rapidly rolled into the grinding roller 53 and the inner wall of the conveying pipeline 51 in the rotating process of the.
The implementation principle of the system for treating papermaking sludge of recycled paper in the embodiment of the application is as follows: during the use, can throw papermaking sludge to sedimentation tank 1 in and deposit, treat in sedimentation tank 1 behind the mud bottom of sinking and the moisture layering, can promote the silt of sedimentation tank 1 bottom surface to the conveyer belt 422 of conveyer 42 through lifting machine 41 on, after lifting machine 41 promotes the conveyer belt 422 of carriage 421 with silt, drive the silt along with conveyer belt 422 and carry, silt will get into between conveyer belt 422 and the extrusion band 424, thereby realize the preliminary extrusion of silt, more moisture in the discharge silt, then send to in the filter-pressing section of thick bamboo 21.
The sludge in the sedimentation tank 1 is conveyed to the bottom of the filter pressing cylinder 21 through the sludge conveying device, then the driving mechanism 24 drives the rotating shaft 22 to rotate, the spiral belt 23 is driven to rotate, so that the sludge can be lifted upwards from the bottom of the filter pressing cylinder 21, the diameter of the upper end of the diameter of the rotating shaft 22 is gradually increased, the screw pitch of the spiral belt 23 is gradually reduced from bottom to top, the space between two adjacent layers of spiral belts 23 is gradually reduced, the sludge is gradually extruded, the moisture generated in the extrusion process directly permeates downwards through the water leakage holes through self weight, and meanwhile, along with the lifting of the sludge, the moisture is gradually reduced, and then the sludge is heated through the heating mechanism I214 in the heating cavity I213 in the rotating shaft 22 and the heating mechanism II 222 in the heating cavity II 221, the sludge is primarily dried, and the moisture in the sludge is greatly reduced;
when the sludge subjected to pressure filtration by the pressure filtration cartridge 21 directly enters the conveying pipeline 51, the sludge automatically moves to the lower end of the conveying pipeline 51 through self weight so as to enter between the grinding roller 53 and the inner wall of the conveying pipeline 51, meanwhile, the grinding roller 53 continuously rotates, the sharp thorns 531 and the protruding thorns 52 are mutually matched, the sludge subjected to pressure filtration by the pressure filtration equipment 2 is scattered again, and then the sludge is thrown into the drying box, so that the drying of the sludge is realized.
The embodiment of the application also discloses a treatment method of the papermaking sludge of the recycled paper.
A method for treating papermaking sludge of recycled paper comprises the following steps:
s1, precipitation: putting the water-containing sludge into a sedimentation tank 1 for sedimentation;
s2, performing primary pressure, after the water and the sludge are precipitated until the water and the sludge are layered, extracting the sludge and performing primary pressure dewatering;
s3, performing filter pressing, namely performing filter pressing on the sludge subjected to the preliminary water removal again, and heating the sludge while performing the filter pressing so as to further reduce the water in the sludge and form sludge blocks;
s4, crushing, and scattering the sludge blocks subjected to pressure filtration;
and S5, drying, and putting the scattered sludge into the drying box again for drying.
The implementation principle of the treatment method of the papermaking sludge of the recycled paper in the embodiment of the application is as follows: through depositing the preliminary separation moisture with moisture silt, then, carrying out the initial pressure with silt and extruding most moisture, through the dewatering that the filter-pressing heating can be further, at last, break up the stoving again, can realize the air-drying of silt, the subsequent use of being convenient for.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A processing system of papermaking sludge of recycled paper is characterized in that: comprises a sedimentation tank (1), a filter pressing device (2) and a drying device (3) which are arranged in sequence;
the filter pressing equipment (2) comprises a vertically arranged filter pressing cylinder (21), the filter pressing cylinder (21) is rotatably connected with a reverse-cone-shaped rotating shaft (22) with a vertically arranged axis, the rotating shaft (22) is fixedly connected with a spiral belt (23) with the outer side capable of abutting against the inner circumferential surface of the filter pressing cylinder (21), the screw pitch of the spiral belt (23) is gradually reduced from bottom to top, a plurality of water leakage holes are formed in the spiral belt (23), a driving mechanism (24) capable of driving the rotating shaft (22) to rotate is arranged on the filter pressing cylinder (21), a reverse-cone-shaped heating cavity II (221) is formed in the middle of the rotating shaft (22) along the axis of the rotating shaft, and a heating mechanism II (222) is arranged in the heating cavity II (221;
a sludge conveying device (4) capable of conveying sludge to the lower end of the filter pressing cylinder (21) is arranged between the sedimentation tank (1) and the lower end of the filter pressing cylinder (21);
a sludge transfer device (5) is arranged between the upper end of the peripheral surface of the filter pressing cylinder (21) and the drying equipment (3).
2. The system for treating paper sludge for recycling paper according to claim 1, wherein: the diameter of the upper end of the inner wall of the filter pressing cylinder (21) is smaller than that of the lower end.
3. The system for treating paper sludge for recycling paper according to claim 1, wherein: a first heating cavity (213) is formed in the upper side of the inner side of the wall of the pressure filter cylinder (21), and a first heating mechanism (214) is arranged in the first heating cavity (213).
4. The system for treating paper sludge for recycling paper according to claim 1, wherein: the upper end of the pressure filter cylinder (21) is connected with an exhaust pipe (215), the exhaust pipe (215) is connected with an air extraction device (26), and an air outlet of the air extraction device (26) is connected with a purification device (27).
5. The system for treating paper sludge for recycling paper according to claim 1, wherein: a plurality of drain holes are formed in the lower bottom surface of the pressure filter cylinder (21), and the lower end of the pressure filter cylinder (21) is connected with a water return groove (25) communicated with the sedimentation tank (1).
6. The system for treating paper sludge for recycling paper according to claim 1, wherein: the bottom surface slope of sedimentation tank (1) sets up, silt conveyor (4) set up conveyer (42) between elevator (41) upper end discharge gate (212) and filter-pressing section of thick bamboo (21) bottom feed inlet (211) including vertical elevator (41) and the level that set up in the lower one end position in sedimentation tank (1) bottom surface, the bottom that the filter-pressing section of thick bamboo (21) was strained in the pressure is higher than the upside of sedimentation tank (1).
7. The system for treating paper sludge for recycling paper according to claim 1, wherein: conveyer (42) include carriage (421), be provided with conveyer belt (422) on carriage (421), the upside that carriage (421) correspond conveyer belt (422) is provided with extrusion band (424) parallel to each other with conveyer belt (422), evenly set up permeable hole (423) on conveyer belt (422).
8. The system for treating paper sludge for recycling paper according to claim 1, wherein: the drying box is arranged on the lower side of the pressure filter cylinder (21), the sludge transfer device (5) comprises a conveying pipeline (51) which is obliquely arranged between the drying box and the pressure filter cylinder (21), protruding spines (52) are densely distributed and fixedly connected on the inner wall of the conveying pipeline (51), a grinding roller (53) capable of continuously rotating is arranged at the axis position of the conveying pipeline (51), and sharp spines (531) are uniformly densely distributed on the peripheral surface of the grinding roller (53).
9. The system for treating paper sludge for recycling paper according to claim 8, wherein: the upper ends of the grinding rollers (53) are conical and fixedly connected with spiral racks (532).
10. A method for treating papermaking sludge of recycled paper comprises the following steps:
s1, precipitation: putting the water-containing sludge into a sedimentation tank (1) for sedimentation;
s2, performing primary pressure, after the water and the sludge are precipitated until the water and the sludge are layered, extracting the sludge and performing primary pressure dewatering;
s3, performing filter pressing, namely performing filter pressing on the sludge subjected to the preliminary water removal again, and heating the sludge while performing the filter pressing so as to further reduce the water in the sludge and form sludge blocks;
s4, crushing, and scattering the sludge blocks subjected to pressure filtration;
and S5, drying, and putting the scattered sludge into the drying box again for drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011627067.XA CN112811776A (en) | 2020-12-30 | 2020-12-30 | Treatment system and treatment method for papermaking sludge of recycled paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011627067.XA CN112811776A (en) | 2020-12-30 | 2020-12-30 | Treatment system and treatment method for papermaking sludge of recycled paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112811776A true CN112811776A (en) | 2021-05-18 |
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| CN202011627067.XA Pending CN112811776A (en) | 2020-12-30 | 2020-12-30 | Treatment system and treatment method for papermaking sludge of recycled paper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114432786A (en) * | 2021-12-29 | 2022-05-06 | 新沂市恒盛石英制品厂 | Quartz sand double filtration equipment |
| CN114772900A (en) * | 2022-05-26 | 2022-07-22 | 合肥宏图彩印有限公司 | Papermaking industry sludge recycling device |
| CN115259611A (en) * | 2022-08-05 | 2022-11-01 | 岳西县亚泰水务有限公司 | Sewage treatment silt filter equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114432786A (en) * | 2021-12-29 | 2022-05-06 | 新沂市恒盛石英制品厂 | Quartz sand double filtration equipment |
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| CN115259611A (en) * | 2022-08-05 | 2022-11-01 | 岳西县亚泰水务有限公司 | Sewage treatment silt filter equipment |
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