CN112026046A - Production device and process for recycling bottle flakes through recycling, granulating and reusing - Google Patents
Production device and process for recycling bottle flakes through recycling, granulating and reusing Download PDFInfo
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- CN112026046A CN112026046A CN202011006870.1A CN202011006870A CN112026046A CN 112026046 A CN112026046 A CN 112026046A CN 202011006870 A CN202011006870 A CN 202011006870A CN 112026046 A CN112026046 A CN 112026046A
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- 238000004064 recycling Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 65
- 238000002156 mixing Methods 0.000 claims description 85
- 238000001035 drying Methods 0.000 claims description 43
- 238000003860 storage Methods 0.000 claims description 30
- 239000008187 granular material Substances 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 10
- 238000012216 screening Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 18
- 239000007795 chemical reaction product Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 239000011361 granulated particle Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract 1
- 239000008188 pellet Substances 0.000 description 10
- 238000012856 packing Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 4
- 235000013361 beverage Nutrition 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/007—Methods for continuous mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
- B29B7/748—Plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/16—Auxiliary treatment of granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0268—Separation of metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to the technical field of bottle flake recycling, granulating and recycling, in particular to a production device and a process for bottle flake recycling, granulating and recycling, wherein an eddy current separator and a material separator are sequentially arranged in the production device; finally, the cut particles are uniformly mixed and then output, the device and the process have the characteristic of high refinement degree, the defects of high cost, low quality and low output of the existing production system are overcome, the batch yield of the bottle piece recycling and granulating process is greatly improved, and the downstream use is facilitated; the granulated particles produced by the device and the process can be used for producing downstream high-end products and even can be made into food-grade products.
Description
Technical Field
The invention relates to the technical field of bottle flake recycling, granulation and recycling, in particular to a production device and a production process for recycling, granulation and recycling bottle flakes.
Background
The existing bottle flake recycling and granulating process is different from manufacturers, the existing process equipment directly enters a screw extruder for melting and granulating after primary selection, crushing, cleaning, drying or spin-drying treatment to form granules, in the technology, the bottle flakes directly entering the screw extruder are generally 3A standard bottle flakes, but high residues still exist in the bottle flakes, the performance indexes of downstream granulation and products in various stages are influenced, in addition, the process equipment has low requirements on the quality of granules, and most products produced by the process can only be used for manufacturing low-end products.
In addition, the batch yield of the existing bottle flake recycling and granulating process is not large, generally, each batch is different from several tons to 40 tons, materials with stable quality and stable batch cannot be provided for downstream, and great inconvenience is caused to stable use of downstream customers.
On the whole, the prior process equipment mainly has the following problems that firstly, the performance indexes of the obtained bottle flakes and the obtained granules are low, and the quality is not high; secondly, the weight of the obtained grain is different in different batches, and large-batch stable supply is not available; and thirdly, various parameters of the obtained granules in different batches have differences, and due to the differences, the performance indexes of the products produced in the downstream are unstable, discontinuous and inconsistent, even do not reach the standard, for example, when the products are provided for producing filaments in the downstream, the phenomena of broken filaments and broken filaments occur, and when the products are dyed, the products are not easy to dye, the dyeing is not uniform, and the like.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a production device and a production process for recovering, granulating and recycling bottle flakes, so that the quality of recovered bottle flake granulated products and the stability and continuity of product performance indexes are improved, and the production environment for recovering, granulating and recycling is improved.
The technical scheme of the invention is as follows:
on one hand, the invention provides a production device for recycling bottle flakes, which comprises a bottle flake storage device and a screw extrusion granulating device which are sequentially communicated through a material pipeline, wherein a first spiral conveyor, an eddy current separator, a second spiral conveyor, a third spiral conveyor, a material separator and a preheating and drying device are sequentially arranged between the bottle flake storage device and the screw extrusion granulating device, and the screw extrusion granulating device is communicated with a material mixing bin device through the material pipeline.
Further, the bottle piece storage device comprises a bottle piece feeding hopper and a bottle piece storage bin, a discharge port of the bottle piece feeding hopper is communicated with a feed port of the bottle piece storage bin through a material pipeline, and a discharge port of the bottle piece storage bin is communicated with a feed port of the first screw conveyer.
Further, the preheating and drying device comprises a fluidized bed and a drying reaction tower, and a circular vibrating screen is arranged between a discharge port of the fluidized bed and a feed inlet of the drying reaction tower.
Further, the grain device is cut in screw extrusion includes screw extruder, doublestage fuse-element filter, cast head, basin, pelleter, drier, rectilinear vibrating screen, screw extruder's discharge gate with the feed inlet intercommunication of doublestage fuse-element filter, the discharge gate of doublestage fuse-element filter with the feed inlet of cast head is connected, the feed inlet of cast head with pass through between the feed inlet of pelleter the basin is connected, the discharge gate of pelleter with the feed inlet intercommunication of drier, the discharge gate of drier with the feed inlet intercommunication of rectilinear vibrating screen, the discharge gate of rectilinear vibrating screen passes through material pipeline intercommunication compounding feed bin device.
Further, the material mixing bin device comprises a material mixing bin, wherein a material mixing bin feeding hole, a material mixing bin mixing feeding hole, a material mixing bin gas outlet and a material mixing bin discharging hole are formed in the material mixing bin respectively, and the material mixing bin discharging hole is communicated with the material mixing bin mixing feeding hole through a material pipeline.
Preferably, at least one mixing bin is arranged, the gas outlet of the mixing bin is communicated with a cyclone separator through a gas pipeline, and a dust collecting barrel is arranged at the lower part of the cyclone separator.
On the other hand, the invention provides a production process for recycling bottle flakes, which sequentially comprises the following steps:
1) quantitatively screening to remove metal materials;
2) sorting and removing non-white PET sheets and non-PET label paper;
3) preheating to remove the surface moisture of the PET sheet;
4) screening out trace residual silt;
5) heating and drying to remove moisture in the PET sheet molecules;
6) heating to the process temperature (265 +/-5) ℃ by a screw extruder to melt into slurry in a molten state;
7) filtering the slurry for the first time, and further pressurizing for filtering for the second time;
8) casting, cooling and granulating the slurry subjected to the secondary filtration in sequence;
9) drying the cut granules, and screening to remove the cutter connecting material and powder;
10) sending the screened cut granules into a storage container;
11) sending the granules to a storage container at different time periods for uniform mixing;
12) and outputting the uniformly mixed cut granules from the storage container, packaging and warehousing or sending the cut granules to downstream.
Further, the bottle pieces are subjected to primary selection, crushing, cleaning and spin-drying treatment.
Further, the heating and drying in the step 5) are carried out for 5 to 6 hours, and the water content of the bottle chips after the heating and drying is less than 40 ppm.
Further, the process temperature in the step 6) is (265 ± 5) ° c, and the second filtering precision in the step 7) is 20 μm.
The invention has the positive effects that: through the process steps of an eddy current separator, a material separator and a preheating and drying device, the bottle chips entering a screw extruder are further purified, so that the content of polyvinyl chloride in the bottle chips is reduced from 90-100 mg/Kg to below 30 mg/Kg; the polyolefin content is reduced from 180-200 mg/Kg to below 40 mg/Kg; the moisture content is reduced from 1% to below 40 ppm; the content of the powder is reduced from 1900-2000 mg/Kg to below 50 mg/Kg; the content of other impurities (silt and metal) is reduced to be below 20mg/Kg from 280-300 mg/Kg, so that the quality of produced cut pellets is greatly improved, then the cut pellets produced in different time periods are uniformly mixed for multiple times through a material mixing bin device, the viscosity of the cut pellets in the same material mixing bin is homogenized, high-quality cut pellets with stable and consistent performance indexes are provided for downstream, the stability and reliability of downstream production products are greatly improved, the probability of broken filaments and broken filaments in the downstream spinning field is greatly reduced, the dyeing uniformity and the dyeing property of the downstream are improved.
Each mixing bin in the mixing bin device can be filled with at least 100 tons of slices, and then the multiple mixing and viscosity homogenizing outputs of the slices are unified, so that raw material products with stable quality and stable supply quantity are provided for the downstream.
The device and the process have the characteristic of high refinement degree, the defects of high cost, low quality and low yield of the existing process equipment are overcome, and the produced granulated particles can be used for producing downstream high-end products and even can be used as food-grade products.
Drawings
FIG. 1 is a schematic view showing the connection of the production apparatus of the present invention.
In the figure: a bottle flake feeding hopper-10, a bottle flake storage bin-11, a first rotary valve-12, a first conveying fan-13 and a travelling crane-14;
a first screw conveyor-20, an eddy current separator-21, a second screw conveyor-22, a third screw conveyor-23, a vibrating feeder-24, a material separator-25, a first centrifugal fan-26 and a feed hopper-27;
negative pressure bin-300, second rotary valve-301, intermediate bin-302, third rotary valve-303, fluidized bed-304, circular vibrating screen-305, fourth rotary valve-306, second conveying fan-307, drying reaction tower-308, second centrifugal fan-309, crystallization heater-310, cyclone separator-311, negative pressure fan-312, drying heater-313 and high pressure dehumidifier-314;
a screw extruder-400, a first melt filter-401, a booster pump-402, a second melt filter-403, a casting belt head-404, a granulator-405, a drier-406, a linear vibrating screen-407, a fifth rotary valve-408, a third conveying fan-409 and a water tank-410;
a waste bin-500, a first mixing bin-501, a mixing bin feed inlet-502, a mixing bin mixing feed inlet-503, a mixing bin gas outlet-504, a mixing bin discharge outlet-505, a sixth rotary valve-506, a fourth conveying fan-507, a cyclone-508 and a dust collecting barrel-509;
a second mixing silo-511, a seventh rotary valve-516, a fifth conveying fan-517;
a first automatic packing machine-600 and a second automatic packing machine-601.
Detailed Description
The present invention will now be described in connection with certain preferred embodiments with reference to the following illustrative figures. It is emphasized that the description herein is for the clarity of illustration of how the several forms of the invention may be practiced and is not intended to be limited to the specific figures and embodiments shown.
Example (b): as shown in fig. 1, a production device for recycling bottle flakes by recycling, comprising a bottle flake storage device, a preheating and drying device, a screw extrusion granulating device and a mixing material bin device, wherein the bottle flake storage device mainly comprises a bottle flake feeding hopper 10 and a bottle flake storage bin 11, a discharge port of the bottle flake feeding hopper is communicated with a feed port of the bottle flake storage bin through a material pipeline, and a first rotary valve 12 and a first conveying fan 13 are arranged on the material pipeline of the discharge port of the bottle flake feeding hopper.
The preheating and drying device comprises a negative pressure bin 300, a second rotary valve 301, an intermediate bin 302, a third rotary valve 303, a fluidized bed 304, a circular vibrating screen 305, a fourth rotary valve 306, a second conveying fan 307, a drying reaction tower 308 and a high-pressure dehumidifier 314 which are sequentially communicated through a material pipeline, wherein an air flow circulating system consisting of a second centrifugal fan 309, a crystallization heater 310 and a cyclone separator 311 is further arranged on the fluidized bed 304, the circular vibrating screen 305 is arranged on the material pipeline between a discharge port of the fluidized bed 304 and the fourth rotary valve 306, the circular vibrating screen 305 is an XF1500DE model product of Pioneer vibration machinery Co., Ltd, in New county, and the high-pressure dehumidifier 314 is a TPE-650 model product of Wuxi Topul Ail purification equipment Co., Ltd.
A first spiral conveyor 20, an eddy current separator 21, a second spiral conveyor 22, a third spiral conveyor 23, a vibrating feeder 24 and a material separator 24 are sequentially arranged between a discharge port of the bottle chip storage bin 11 and a feed port of the negative pressure bin 300, wherein the eddy current separator 21 selects a TLFXP-14 model product of Zhejiang Tian force magnetoelectricity technology, Inc., and the material separator 24 selects a 6SXZ-300CL model product of Hefei Meiya photoelectricity technology, Inc.
The screw extrusion granulating device comprises a screw extruder 400, a two-stage melt filter consisting of a first melt filter 401, a booster pump 402 and a second melt filter 403, a casting belt head 404, a water tank 410, a granulator 405, a drying machine 406 and a linear vibrating screen 407 which are arranged in sequence, wherein a discharge port of the granulator 405 is communicated with a feed port of the drying machine 406, a discharge port of the drying machine 406 is communicated with a feed port of the linear vibrating screen 407, a discharge port of the linear vibrating screen 407 is respectively communicated with a waste bin and a mixing bin device through material pipelines, a fifth rotary valve and a third conveying fan are arranged on the material pipeline of the discharge port of the linear vibrating screen 407, and the screw extruder 400 is a screw extruder selected from Shanghai Jinwei chemical fiber mechanical manufacturing Limited company
A screw extruder and a double-stage melt filter are CPF-PT-15C products of Zhejiang Yufeng mechanical limited, wherein a granulator 405 including a casting belt head 404, a water tank 410, a drying machine 406 and a linear vibrating screen 407 is TSQW200Z products of Kalimei (Luoyang) electromechanical limited.
The first mixing bunker 501 is provided with a mixing bunker feeding inlet 502, a mixing bunker mixing feeding inlet 503, a mixing bunker air outlet 504 on the bunker body, and a mixing bunker discharging outlet 505 at the bottom of the first mixing bunker 501, wherein the mixing bunker discharging outlet 505 is communicated with the mixing bunker mixing feeding inlet 503 through a material pipeline provided with a sixth rotary valve 506 and a fourth conveying fan 507, and the mixing bunker discharging outlet 505 is communicated with the first automatic packing machine 600 through the material pipeline.
The silo body of the second mixing silo 511 is respectively provided with a mixing silo feed inlet, a mixing silo mixing feed inlet and a mixing silo gas outlet, and the bottom of the silo body of the second mixing silo 511 is provided with a mixing silo discharge outlet, the mixing silo discharge outlet and the mixing silo mixing feed inlet are communicated through a material pipeline provided with a seventh rotary valve 516 and a fifth conveying fan 517, and the mixing silo discharge outlet on the second mixing silo 511 is communicated with the second automatic packing machine 601 through a material pipeline. The first automatic packing machine 600 and the second automatic packing machine 601 are selected from LPS-1000GF model of Kunshan mechanical and electrical engineering Co.
The feed inlets of the mixing bins on the first mixing bin 501 and the second mixing bin 511 are respectively communicated with the discharge outlet of the linear vibrating screen 407 through material pipelines.
The gas outlet of the mixing bin is communicated with the cyclone separator 508 through a gas pipeline, and the lower part of the cyclone separator 508 is provided with a dust collecting barrel.
The production process for recycling the bottle flakes by granulation comprises the following steps of carrying out primary selection, crushing, cleaning and spin-drying treatment on the bottle flakes:
1) quantitatively screening to remove metal materials;
2) sorting and removing non-white PET sheets and non-PET label paper;
3) preheating, dewatering and dehumidifying;
4) screening out residual trace silt;
5) heating and drying for 5-6 hours, wherein the water content of the bottle chips after heating and drying is less than 40 ppm;
6) heating the mixture to a process temperature by a screw extruder to melt the mixture into slurry in a molten state, wherein the process temperature is (265 +/-5) DEG C;
7) carrying out primary filtration on the slurry, and further pressurizing for carrying out secondary filtration, wherein the precision of the secondary filtration is 20 microns;
8) casting, cooling and granulating the slurry subjected to the secondary filtration in sequence;
9) drying the cut granules, and screening to remove the cutter connecting material and powder;
10) sending the screened cut granules into a storage container;
11) sending the granules to a storage container at different time periods for uniform mixing;
12) and outputting the uniformly mixed cut granules from the storage container, packaging and warehousing or sending the cut granules to downstream.
Referring to the attached drawing 1, the operation of the device in the production process steps is that beverage bottles made of PET materials recovered from towns are primarily selected, crushed, cleaned and dried to form 3A-level standard bottle flakes, or 3A-level standard bottle flakes are directly recovered, then the beverage bottles are put into a bottle flake feeding hopper 10 through a travelling crane 14 and are conveyed into a bottle flake storage bin 11 through a first rotary valve 12 and a first conveying fan 13, the bottle flake storage bin 11 has the capacity of 150 tons per bin, then the beverage bottles are lifted and quantitatively conveyed to a feeding hole of an eddy current separator 21 through a first spiral conveyor 20, materials are vibrated and flattened, uniformly pass through the eddy current separator, metal materials such as copper, aluminum, iron and the like possibly existing in the bottle flakes are separated from the bottle flakes, the metal bottle flakes are removed, then the material bottles are guided and conveyed to a third spiral conveyor 23 through a second spiral conveyor 22 to enable the bottle flakes to be quantitatively lifted to a vibrating and flattening feeder 24, then conveying the bottle flakes to a feeding port of a material sorting machine 25, removing non-PET label paper and non-white PET sheets from the bottle flakes in the material sorting machine 25 again, then conveying the sorted bottle flakes into a negative pressure bin 300, preheating the bottle flakes by a fluidized bed 304, removing water on the surfaces of the bottle flakes, falling into a circular vibrating screen 305 by the gravity of the bottle flakes, removing a small part of unwashed silt adhered to the surfaces of the bottle flakes in the circular vibrating screen 305 under the action of an excitation force, conveying the bottle flakes into a drying reaction tower 308 by a fourth rotary valve 306 and a second conveying fan 307 for heating and drying, heating the bottle flakes in the drying reaction tower 308 by hot air through a drying heater 313 and a high pressure dehumidifier 314 and staying for 5-6 h, conveying the bottle flakes into a screw extruder 400, heating the screw extruder 400 to a process temperature of 265 ℃, melting the bottle flakes into a molten state, and filtering the molten state by a first melt filter 401, Pressurizing by a booster pump 402, filtering by a second solution filter 403, entering a casting belt of a casting belt head 404, cooling by a water tank 410, cutting into granules by a granulator 405, drying by a drying machine 406, screening by a linear vibration screen 407 to remove continuous cutting materials and powder, and conveying to a waste bin 500 or a first mixing bin 501 or a second mixing bin 511 by a fifth rotary valve 408 and a third conveying fan 409, wherein the waste bin 500 is used for collecting and storing the materials detected to be unqualified. The first mixing bin 501 and the second mixing bin 511 have the same capacity, and can be used for filling 100-plus-200-ton/bin pellets, the first mixing bin 501 and the second mixing bin 511 are respectively 150-ton/bin, when the first mixing bin 501 is filled with pellets, the first mixing bin 501 is switched to the second mixing bin 511, the first mixing bin 501 filled with the pellets is circularly conveyed through the sixth rotary valve 506 and the fourth conveying fan 507, the pellets entering the first mixing bin 501 at different time intervals are fully mixed to homogenize viscosity, the pellets fall into the first automatic packaging machine 600 after being mixed for 3 times and are weighed and packaged, and the packaged pellets or chips can be put in storage for sale or directly conveyed to the downstream.
Although the invention has been described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the invention without departing from the scope of the invention.
Claims (10)
1. The utility model provides a production device that granulation was recycled is retrieved to bottle piece, includes bottle piece storage device, screw extrusion and cuts grain device, its characterized in that: bottle piece storage device and screw extrusion grain device between have set gradually first screw conveyer, eddy current sorter, second screw conveyer, third screw conveyer, material sorter, preheating drying device, the output intercommunication of the grain device is cut in the screw extrusion has compounding feed bin device.
2. The apparatus for producing bottle flakes according to claim 1, wherein: the bottle piece storage device comprises a bottle piece feeding hopper and a bottle piece storage bin, wherein a discharge port of the bottle piece feeding hopper is communicated with a feed port of the bottle piece storage bin through a material pipeline, and a discharge port of the bottle piece storage bin is communicated with a feed port of the first spiral conveyor.
3. The apparatus for producing bottle flakes according to claim 1, wherein: the preheating and drying device comprises a fluidized bed and a drying reaction tower, and a circular vibrating screen is arranged between a discharge port of the fluidized bed and a feed inlet of the drying reaction tower.
4. The apparatus for producing bottle flakes according to claim 1, wherein: the screw extrusion granulating device comprises a screw extruder, a two-stage melt filter, a casting belt head, a water tank, a granulator, a drying machine and a linear vibrating screen, wherein a discharge port of the screw extruder is communicated with a feed port of the two-stage melt filter, a discharge port of the two-stage melt filter is connected with a feed port of the casting belt head, a feed port of the casting belt head is connected with the feed port of the granulator through the water tank, a discharge port of the granulator is communicated with a feed port of the drying machine, a discharge port of the drying machine is communicated with a feed port of the linear vibrating screen, and a discharge port of the linear vibrating screen is communicated with a material mixing bin device through a material pipeline.
5. The apparatus for producing bottle flakes according to claim 1, wherein: the material mixing bin device comprises a material mixing bin, wherein a material mixing bin feeding hole, a material mixing bin mixing feeding hole, a material mixing bin gas outlet and a material mixing bin discharging hole are formed in the material mixing bin respectively, and the material mixing bin discharging hole is communicated with the material mixing bin mixing feeding hole through a material pipeline.
6. The apparatus for producing bottle flakes according to claim 5, wherein: the automatic material mixing device is characterized in that at least one material mixing bin device is arranged, a discharge port of the material mixing bin is communicated with the automatic packaging machine through a material pipeline, a gas outlet of the material mixing bin is communicated with the cyclone separator through a gas pipeline, and a dust collecting barrel is arranged at the lower part of the cyclone separator.
7. The production process for recycling the bottle flakes is characterized in that the recycled bottle flakes are sequentially subjected to the following steps:
1) quantitatively screening to remove metal materials;
2) sorting and removing non-white PET sheets and non-PET label paper;
3) preheating to remove the surface moisture of the PET sheet;
4) screening out residual trace silt;
5) heating and drying to remove moisture in the PET sheet molecules;
6) heating to the process temperature (265 +/-5) ℃ by a screw extruder to melt into slurry in a molten state;
7) filtering the slurry for the first time, and further pressurizing for filtering for the second time;
8) casting, cooling and granulating the slurry subjected to the secondary filtration in sequence;
9) drying the cut granules, and screening to remove the cutter connecting material and powder;
10) sending the screened cut granules into a storage container;
11) sending the granules to a storage container at different time periods for uniform mixing;
12) and outputting the uniformly mixed cut granules from the storage container, packaging and warehousing or sending the cut granules to downstream.
8. The production process for recovering, granulating and recycling the bottle flakes according to claim 7, wherein the recovered bottle flakes are 3A-grade bottle flakes or bottle flakes subjected to primary selection, crushing, cleaning and drying.
9. The production process for recovering, granulating and recycling the bottle chips as claimed in claim 7, wherein the heating and drying in the step 5) is performed for 5 to 6 hours, and the water content of the bottle chips after the heating and drying is less than 40 ppm.
10. The production process for recovering, granulating and recycling bottle flakes according to claim 7, wherein the process temperature in the step 6) is (265 ± 5) ° c, and the second filtering precision in the step 7) is 20 μm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011006870.1A CN112026046A (en) | 2020-09-23 | 2020-09-23 | Production device and process for recycling bottle flakes through recycling, granulating and reusing |
| EP21159820.6A EP3974139A1 (en) | 2020-09-23 | 2021-03-01 | Bottle flakes recycling and pelletizing apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011006870.1A CN112026046A (en) | 2020-09-23 | 2020-09-23 | Production device and process for recycling bottle flakes through recycling, granulating and reusing |
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| CN112026046A true CN112026046A (en) | 2020-12-04 |
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| CN202011006870.1A Pending CN112026046A (en) | 2020-09-23 | 2020-09-23 | Production device and process for recycling bottle flakes through recycling, granulating and reusing |
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| EP3974139A1 (en) * | 2020-09-23 | 2022-03-30 | Zhengzhou Zhongyuan Drying Technique and Engineering Co., Ltd. | Bottle flakes recycling and pelletizing apparatus and method |
| CN115230020A (en) * | 2022-07-19 | 2022-10-25 | 浙江天能电源材料有限公司 | Intelligent sorting system and method for heavy plastics of waste storage batteries |
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