CN108972954A - A kind of waste plastics recycling system - Google Patents
A kind of waste plastics recycling system Download PDFInfo
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- CN108972954A CN108972954A CN201810971190.XA CN201810971190A CN108972954A CN 108972954 A CN108972954 A CN 108972954A CN 201810971190 A CN201810971190 A CN 201810971190A CN 108972954 A CN108972954 A CN 108972954A
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- waste plastics
- waste
- sheet stock
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- 239000004033 plastic Substances 0.000 title claims abstract description 109
- 229920003023 plastic Polymers 0.000 title claims abstract description 109
- 239000002699 waste material Substances 0.000 title claims abstract description 107
- 238000004064 recycling Methods 0.000 title claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 128
- 239000002245 particle Substances 0.000 claims abstract description 88
- 239000000463 material Substances 0.000 claims abstract description 75
- 238000005406 washing Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000005469 granulation Methods 0.000 claims abstract description 16
- 230000003179 granulation Effects 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 78
- 239000010865 sewage Substances 0.000 claims description 42
- 239000010802 sludge Substances 0.000 claims description 41
- 238000012545 processing Methods 0.000 claims description 37
- 239000002910 solid waste Substances 0.000 claims description 28
- 230000003750 conditioning effect Effects 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 15
- 230000001376 precipitating effect Effects 0.000 claims description 11
- 238000001354 calcination Methods 0.000 claims description 10
- 239000002912 waste gas Substances 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 4
- 239000010797 grey water Substances 0.000 claims description 3
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 240000005373 Panax quinquefolius Species 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 36
- 238000000034 method Methods 0.000 abstract description 18
- 238000012360 testing method Methods 0.000 abstract description 17
- 239000012634 fragment Substances 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 26
- 238000003860 storage Methods 0.000 description 16
- 239000000126 substance Substances 0.000 description 15
- 230000008901 benefit Effects 0.000 description 10
- 238000011084 recovery Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011236 particulate material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013590 bulk material Substances 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
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- 231100000719 pollutant Toxicity 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
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- 230000006399 behavior Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
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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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
-
- 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
- B29B17/04—Disintegrating plastics, e.g. by milling
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
- B65B65/003—Packaging lines, e.g. general layout
-
- 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
- B29B2017/001—Pretreating the materials before recovery
- B29B2017/0015—Washing, rinsing
-
- 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
Abstract
The invention discloses a kind of waste plastics recycling systems, including crushing washing dewatering module, modified granulation module and packetization module, wherein, the crushing washing dewatering module and modified be granulated between module are equipped with level-one mixing device, which includes sheet stock mixer or sheet stock blending bucket and the sheet stock mixing agitator being arranged in sheet stock mixer or sheet stock blending bucket；It is equipped between the crushing washing dewatering module and level-one mixing device multiple for storing the sheet stock magazine of the fragment material of crushing washing dewatering module generation, each sheet stock magazine composition first detection unit.The waste plastics recycling system is divided into test manufacture part and volume production part by the cooperation of two-stage mixing device, by the mixture of raw material, has that production efficiency is higher, cost is lower and uniform, the higher waste plastic particles of stability that enable to process performance.
Description
Technical field
The present invention relates to a kind of Waste plastic processing devices, and in particular to a kind of waste plastics recycling system.
Background technique
The recycling and reusing of waste plastics can either economize on resources, and improve the utilization rate of material, and can protect environment, reduce
Its occupied area, therefore its development prospect is wide.The recovery processing of existing waste plastics (such as PE/PE) mostly includes broken clear
It washes, be dehydrated, being modified the techniques such as granulation, packing.In existing waste plastics recovery application field, have the disadvantage that
1, the production in different process stage is completed by different producers, such as A producer is only responsible for the crushing washing of waste plastics,
B producer is then responsible for waste plastics heating after crushing washing causing particle, C producer be responsible for granules regeneration waste plastics performance test,
Blending and modifying (may reheat and cause modified particles), packaging, so that a complete and efficient waste plastics cannot be formed
Production line, leads to that various units mismatch, production efficiency is low, secondary conveying is at high cost.
2, in waste plastics recovery treatment process, due to from a wealth of sources, the useless modeling of the same race of recycling of the waste plastics before processing
The component content and performance of material have diversity.The waste plastics of above-mentioned technique just has test performance and is carried out after causing particle
It is blended, therefore the performance for passing through the modification waste plastic particles that above-mentioned technique processes is inhomogenous, stability is poor.
3, since the waste plastics material performance of different batches is different, usually these materials are not pressed in existing production method
It is formulated random mixed processing, when the recycling waste plastic materials appearance of final production processing is unqualified, it is difficult to which retrospect is used
Raw material sources, cause the underproof reason of product to be difficult to check.
4, the downstream client of waste plastic particles be large waste plastic product manufacturer (such as: municipal wastewater pipe, waste plastics week
Turnning box, waste plastics pallet production factory), since the waste plastic particles component of every waste plastic product consumption is more.Waste plastic particles
Stability is even more important to downstream producer, and the waste plastic particles of same physical and chemical performance, the quality of stability powerhouse is significantly better than surely
Qualitative difference person.The inhomogenous waste plastic particles of performance considerably increase the rejection rate of downstream manufacturers, and economic benefit is bad, are formed
Waste.
Summary of the invention
That it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of production efficiencys is higher, cost is lower useless
Plastic reclaimed system, and enable to the waste plastic particles performance processed uniform, stability is higher.
The technical solution that the present invention solves above-mentioned technical problem is:
A kind of waste plastics recycling system, including crushing washing dewatering module, modified granulation module and packetization module, it is special
Sign is that the crushing washing dewatering module and modified be granulated between module are equipped with level-one mixing device, the level-one mixing device
Including sheet stock mixer or sheet stock blending bucket and the sheet stock mixing agitator being arranged in sheet stock mixer or sheet stock blending bucket；
It is equipped between the crushing washing dewatering module and level-one mixing device multiple for storing the generation of crushing washing dewatering module
The sheet stock magazine of fragment material, each sheet stock magazine constitute the first sample detecting unit.
A preferred embodiment of the invention, wherein for multiple groups, every group changes for the level-one mixing device and the modified module that is granulated
Property be granulated between module and level-one mixing device and be arranged in a one-to-one correspondence.When work, multiple groups level-one mixing device can carry out simultaneously
The mixing of multiple groups material works, the modified modification for being granulated module and multiple groups level-one mixing device capable of being cooperated to carry out multiple groups material of multiple groups
It is granulated work, so that waste plastics recovery processing efficiency doubles.Mould is granulated so that multiple groups level-one mixing device collocation multiple groups are modified
Block is advantageous in that, can be by specification of equipment, the configuration parameter of every group of level-one mixing device and modification module, flexible configuration place
In equipment.The underproduction, halt production etc. caused by reduce because of device configuration mismatch.
Preferably, modified be granulated between module and packing apparatus is equipped with second level mixing device, the second level mixing device
Including particle mixer or particle blending bucket and the particle mixing rabbling mechanism being arranged in particle mixer or particle blending bucket；
Modified be granulated between module and second level mixing device is used to store the modified granule materials for being granulated module and generating equipped with multiple
Particle magazine, each particle magazine constitutes the second sample detecting unit.
When production, waste plastics is detected with determination one by one using the method for sampling Detection in the first sample detecting unit
The physical and chemical performance of material in each particle storage container, and testing result is recorded.It is multiple batches of after completing Detection task
The different testing result of multiple groups physico-chemical property that is formed of multiple sheet stock storage containers constitute a database.In this way, modified
Before being granulated module carry out task, first according to the performance requirement of target product, a set of feed product assembled scheme is designed, the raw material object
Material assembled scheme is embodied in the amount of the material and selected material that select which particle magazine, when producing mixing
Feed intake scheme, and the dispensing work of material is then carried out according to the scheme that feeds intake, is granulated.Second level mixing device is set after granulation
Purpose is that it is possible to carry out uniform mixing again according to the different of waste plastic particles physico-chemical property in each storage container, and homogenizing exists
The material batch of issuable performance difference in granulation process, thus further increase finished product waste plastics performance homogeneity and
Stability.
Preferably, the level-one mixing device and modified be granulated between module are connected by conveying pipeline.When work, waste plastics
After fragment completes mixing task on level-one mixing device, enters directly by conveying pipeline and be granulated on granulation modification module
Processing, so that transport is more convenient, conevying efficiency is higher.
Preferably, material box of the packing apparatus by being located above and the packing executing agency structure below material box
At, wherein the feed inlet of material box is connect with the discharge port of second level mixing device, and the discharge port of material box and packing execute structure
Between connected by particle conveying pipeline.When work, after second level mixing device completes mixing task, it will be mixed by particle conveying pipeline
Waste plastic particles afterwards are transported in material box, and the waste plastic particles in material box fall on packing down under the effect of gravity and hold
Packing task is carried out in row mechanism.The advantages of this arrangement are as follows have by the way of material conveying using particle conveying pipeline
Fast, high-efficient, energy consumption the is low advantage of convenient transportation, speed.
Preferably, the second level mixing device is multiple groups, and the particle conveying pipeline includes that particle conveying supervisor and particle are defeated
Expect branch pipe, wherein the discharge port of each second level mixing device pass sequentially through particle conveying branch pipe and particle conveying supervisor with it is described
Material box connection.The advantages of this arrangement are as follows, on the one hand, multiple groups second level mixing device can carry out waste plastic particles simultaneously
Mixing task, to double up mixing efficiency；On the other hand, cooperate conveying with particle conveying branch pipe in particle conveying supervisor
During, further mixing work can be carried out to waste plastic particles, so that the homogeneity of the waste plastic particles after being packaged
More preferably.
It preferably, further include environment-friendly disposal system, which includes that sewage treatment module and exhaust gas solid waste are comprehensive
Close processing module, wherein the sewage treatment module includes sewage conditioning tank, biochemical treatment apparatus, precipitating filter device, activity
Sludge conditioning distributing reservoir and recycle-water conditioning tank, wherein the wastewater influent end of the sewage conditioning tank passes through pipeline and useless modeling
Expect the connection of cleaning sullage discharge ends, the sewage drainage end of the sewage conditioning tank by the sewage of pipeline and biochemical treatment apparatus into
Water end (W.E.) connection, the activated sludge upstream end that the activated sludge adjusts distributing reservoir are dirty by the activity of pipeline and precipitating filter device
The clear water upstream end of the connection of mud outlet side, the recycle-water conditioning tank is connected by the clear water outlet side of pipeline and precipitating filter device
It connects；The exhaust gas solid waste integrated treatment module includes emission-control equipment, gas sampling cover, mixing waste gas collection device, solid waste
Vacuum calcining device；Wherein, the emission-control equipment includes biomembrane absorption tower, moisture separation device and activated carbon adsorption
Device, wherein the biomembrane absorption tower is equipped with the exhaust gas entrance entered for exhaust gas, and biomembrane passes through at the top of absorption tower
Pipeline is connect with the activated sludge outlet side that the activated sludge in sewage-treatment plant adjusts distributing reservoir, biomembrane absorb the bottom of the tower
Activated sludge outlet connected by the activated sludge upstream end of pipeline and biochemical treatment apparatus；The moisture separation device
Air inlet is connect by pipeline with the exhaust outlet on biomembrane absorption tower, and the exhaust outlet of moisture separation device passes through pipeline and active carbon
The air inlet of adsorbent equipment connects, wherein and the gas sampling is provide with the top set in the exhausting waste gas area of modified prilling granulator,
It is responsible for and is connected by air inlet between exhaust gas entrance and gas sampling cover, the mixing waste gas collection device passes through the first air intake branch
It is connected on air inlet supervisor, the solid waste vacuum calcining device is connected on air inlet supervisor by the second air intake branch.When work,
The principle of sewage treatment are as follows: the sewage in crushing washing pond is entered by water inlet pipe or open channel drains into sewage conditioning tank, with
A certain amount of activated sludge more than needed of memory and sewage preaeration to be processed mixing, realize homogenizing；Sewage after preaeration is pumped into
Biochemical treatment apparatus；Realize aerobic treatment, precipitating and (detesting) oxygen biochemical treatment etc., precipitating (filtering) supernatant enters back
Water use regulation pond is cleaning waste plastics cycling use of water；Sludge part more than needed enters activated sludge and adjusts distributing reservoir for exhaust-gas treatment work
Organism-absorbing is used；Sludge part enters sewage conditioning tank, partially enters sludge press filtration or mummifying pool.The principle of exhaust-gas treatment are as follows:
The exhaust gas generated is granulated first after the collection of gas sampling cover, then is delivered into emission-control equipment and is carried out by air inlet supervisor
It absorbs and handles, the exhaust gas for completing to generate after absorption processing passes through exhaust pipe again, chimney is transported in atmosphere；In exhaust-gas treatment mistake
Cheng Zhong, the activated sludge in activated sludge distributing reservoir enter biomembrane absorption tower, and the filler surface being arranged in tower forms biology
Film；Exhaust gas is adequately contacted by biomembrane absorption tower with biomembrane, and biomembrane carries out the organic matter in exhaust gas effective
It absorbs；The activated sludge of biomembrane absorb the bottom of the tower discharge, returns to biochemical treatment apparatus 1 and is handled；Exhaust gas after absorbing
Moisture removal, then the standard discharge after activated carbon adsorption are removed by moisture separator.The principle of fixed-end forces are as follows: waste plastics recovery
After the solid waste of generation first passes through separation, dust is entered in air inlet supervisor by the first air intake branch in solid waste.Waste plastics returns
Receipts produce the useless sieve for being stained with waste plastics impurity；The sieve by solid waste vacuum calcining device processing after can reuse again,
The exhaust gas generated in solid waste vacuum calcining device treatment process is entered in admission line by the second air intake branch.In admission line
Exhaust gas be mixed and enter emission-control equipment by air inlet supervisor and handled, complete the waste water generated after processing task
(containing activated sludge) is displaced into sewage conditioning tank by sewage pipe reuses again.
Preferably, the mixing waste gas collection device is cyclone separator, the air outlet of the cyclone separator and described the
One air intake branch connects, and passes through between the gas outlet of the mixing device in the feed inlet and Waste plastic treatment apparatus of rotary separator
The connection of mixing appendix.Wherein, waste plastics fragment or useless modeling can be generated during carrying out material mixing due to mixing device
Expect particle, sandstone and solid waste (pollutant of dust particles size) etc., it is therefore desirable to first with cyclone separator to waste plastics
Fragment or waste plastic particles, sandstone and solid waste are separated, complete separation task after, then by first air intake branch,
The solid waste generated after separation is transported in exhaust gas Integrated Processing Unit by air inlet supervisor to be focused on；It is solid so as to avoid
It is useless to be directly discharged to pollute the environment in atmosphere.
It preferably, further include chimney and blower unit, the chimney passes through the purification of exhaust pipe and activated carbon adsorption device
Gas vent connection, the blower unit are centrifugal blower, which is arranged on exhaust pipe.It is powerful when work
Centrifugal blower generates negative pressure at exhaust pipe, which promotes exhaust gas Integrated Processing Unit and coupled each air intake branch
Each air duct in exhaust gas automatically flow in exhaust pipe, be then discharged in atmosphere by chimney again, so as to smoothly realize
Collection, processing and the discharge task of exhaust gas.The advantages of this arrangement are as follows being not only able to carry out the exhaust gas in air inlet supervisor
Guidance, and the flow direction of the exhaust gas in each air intake branch can be oriented to, therefore sphere of action is more extensive.
Preferably, further include monitoring inspection platform, which includes walking corridor and ladder, wherein it is described walk
Corridor is separately positioned on the periphery of sewage-treatment plant and exhaust gas Integrated Processing Unit, including corridor and lower layer corridor are walked in upper layer
Frame, the ladder setting walks corridor on upper layer and lower layer is walked between corridor.By the way that above-mentioned ladder is arranged and walks corridor, can facilitate
Operator such as inspects to exhaust gas Integrated Processing Unit, monitors and repairs by random samples at the tasks.
The working principle of the invention:
When production, first waste plastics is crushed on crushing washing dewatering module, is cleaned and dehydration, formation
Waste plastics fragment is transferred storage into sheet stock magazine, and waste plastics is stored in multiple sheet stocks after multiple batches of processing
In storage container (such as 100), then, using each sheet stock magazine as a sample detecting unit, examined using sampling
The method of survey one by one detects with the physical and chemical performance of material in each storage container of determination waste plastics, and to testing result into
Row record.After completing Detection task, the different detection of the multiple groups physico-chemical property that multiple batches of multiple sheet stock storage containers are formed
As a result a database is constituted.In this way, before carrying out mixing task using level-one mixing device, first according to the property of target product
It can require, design a set of feed product assembled scheme, which is embodied in which sheet stock storing selected
Then the amount of the material of container and selected material, the scheme that feeds intake when producing mixing carry out material according to the scheme that feeds intake
Work is launched, the material for the sheet stock magazine chosen is transported in level-one mixing device and is uniformly mixed.When level-one is mixed
After expecting that device completes mixing task, sheet waste plastics is transported to modified be granulated in module and is processed into waste plastic particles, enters back into
Packetization module is packaged.
Be provided with second level mixing device into an improvement project of the invention, in this way, when level-one mixing device complete it is mixed
After material task, by target product total amount be divided into test manufacture part (such as: the 30% of total amount) and volume production part (such as: total amount
70%) it is produced；Wherein, the test manufacture part of target product total amount waste plastic particles after multiple batches of granulation are stored in more
In a particulate material storage container (such as 50), using each particulate material magazine as a sample detecting unit, pumping is utilized
The method of sample detection one by one detects with the physical and chemical performance of material in each storage container of determination waste plastic particles, and to inspection
Result is surveyed to be recorded.After completing Detection task, the multiple groups physico-chemical property of multiple batches of multiple particulate material storage containers formation
Different testing results constitutes a database.It utilizes and is examined with the test manufacture part (such as 30% of total amount) of target product total amount
The data measured, target capabilities corresponding with the scheme that feeds intake of level-one mixing device compare, if the property of waste plastic particles
Can target capabilities corresponding with the scheme of feeding intake it is inconsistent, then the volume production part of target product total amount (the 70% of total amount) is adjusted to
The new scheme that feeds intake carries out the processing of the volume production part (the 70% of total amount) of total amount.After processing, volume production part and test manufacture part exist
Second level mixing device is mixed, and is entered back into packetization module and is packaged.
After being operated by above-mentioned mixing, the biggish waste plastics of the different performance difference in the source of different batches can be mixed
Collocation, checks, repeatedly to guarantee that the physical and chemical performance of the material particles of output is uniform, stability is good.
The present invention have compared with prior art it is below the utility model has the advantages that
1, the waste plastics recycling system forms the production line of complete waste plastics, the production relative to the different process stage
For the production method completed by different producers, the transshipment charge and transhipment time of the material of midway can be saved, therefore save
Processing cost has been saved, production efficiency is improved.
2, molecule can aoxidize and be carbonized when waste plastics each heating plasticizing, lead to the main performance index such as ash of waste plastics
Point, elongation at break, tensile elongation etc. reduce.It can make to give up by carrying out the allotment of blending scheme in the sheet stock stage by target product
Plastics only heat granulation once, and Repeat-heating melting is avoided repeatedly to be granulated, the performance indicator for being optimal recycling waste plastic materials, benefit
Use value maximization.
3, in a preferred embodiment of the invention, by the cooperation of two-stage mixing device, the mixture of raw material is divided into test manufacture portion
Divide and volume production part.Test manufacture formula is modified in time in the test manufacture stage, avoids and is returned as caused by formula error, error
Work, reproduction etc..So that product quality, value are significantly promoted.
4, in preferred embodiment of the invention, which can make every a collection of waste plastics by mixing twice,
With batch target product performance is uniform, waste plastic particles that stability is strong.
5, it is dispensed by using the raw material that sheet stock magazine generates crushing washing dewatering module, and to each
The raw material of material magazine is inspected by random samples and is recorded, therefore the fragment material that every batch of supplied materials obtains can understand differentiation and note
Record；And when being fed intake according to the feed product assembled scheme of subsequent design, it will also recognize that and know thrown material from which sheet stock
Magazine, that is, know primary source, enable subsequent by the modified waste plastic particles finished product for being granulated module and producing
Enough primary sources for clearly knowing raw material, have raw material trackability.According to the trackability, can be brought for production very big
It helps, such as when finding that final products are unqualified, can quickly know the initial material source of the product, and examine according to sampling
The sample retained when survey targetedly tests and analyzes raw material, to be quickly found out the underproof reason of product.
6, the present invention has carried out detailed data acquisition in production per stage to raw material in production process carries out raw material, number
The existing production procedure of industry is much larger than according to amount.The data can be used for Production database construction, big data analysis etc., help feedback life
Produce the important operation indicators such as efficiency, input and output rate, material performance situation.
Detailed description of the invention
Fig. 1 is a kind of schematic perspective view of a specific embodiment of waste plastics recycling system of the invention.
Fig. 2 is the modified schematic perspective view for being granulated module and packetization module in Fig. 1.
Fig. 3 is the schematic perspective view that feeding module is broken up in Fig. 1.
Fig. 4 is the schematic perspective view of environment-friendly disposal system in Fig. 1.
Fig. 5 is the schematic perspective view of exhaust gas solid waste integrated treatment module in Fig. 1.
Fig. 6 is the work flow diagram of sewage treatment module and emission-control equipment in environment-friendly disposal system.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Referring to Fig. 1-Fig. 2, a kind of waste plastics recycling system of the invention includes crushing washing dewatering module 1, modified granulation
Module 2 and packetization module 3, be respectively equipped on the crushing washing dewatering module 1 crushing device 1-1, cleaning device 1-2 and
Dehydration device 1-3, the modified module that is granulated are equipped with modified prilling granulator 2-1, the crushing washing dewatering module 1 with it is modified
It is granulated between module 2 and is equipped with level-one mixing device, which includes sheet stock mixer or sheet stock blending bucket 4 and setting
Sheet stock mixing agitator in sheet stock mixer or sheet stock blending bucket 4；The crushing washing dewatering module 1 and level-one mixing
Sheet stock magazines 5 equipped with multiple fragment materials for being used to store the generation of crushing washing dewatering module 1 between device, each
Expect that magazine 5 constitutes first detection unit.
Referring to Fig. 1-Fig. 2, the level-one mixing device and modified be granulated between module 2 are connected by conveying pipeline.When work,
After waste plastics fragment completes mixing task on level-one mixing device, it is enterprising that granulation modification module is entered directly by conveying pipeline
Row is granulated processing, so that transport is more convenient, conevying efficiency is higher.
Referring to Fig. 1-Fig. 2, the level-one mixing device is multiple groups, every group of modified granulation 2 He of module with the modified module 2 that is granulated
It is arranged in a one-to-one correspondence between level-one mixing device.When work, multiple groups level-one mixing device can carry out the mixed of multiple groups material simultaneously
Expect work, the modified module 2 that is granulated of multiple groups can cooperate the modified of multiple groups level-one mixing device progress multiple groups material to be granulated work, from
And waste plastics recovery processing efficiency is doubled.
Referring to Fig. 1-Fig. 2, modified be granulated between module 2 and packetization module 3 is equipped with second level mixing device, and the second level is mixed
Material device includes particle mixer or particle blending bucket 6 and the particle mixing being arranged in particle mixer or particle blending bucket 6
Rabbling mechanism；Modified be granulated between module 2 and second level mixing device generates equipped with multiple for storing the modified module 2 that is granulated
Granule materials particle magazine 7, each particle magazine 7 constitutes second detection unit.When production, in the second sampling
Detection unit one by one detects with material in each particle magazine 7 of determination waste plastics using the method for sampling Detection
Physical and chemical performance, and testing result is recorded.After completing Detection task, what multiple batches of multiple sheet stock storage containers were formed
The different testing result of multiple groups physico-chemical property constitutes a database.In this way, before modified granulation module carry out task, first basis
The performance requirement of target product designs a set of feed product assembled scheme, which is embodied in selection
The amount of the material of which particle magazine 7 and selected material, the scheme that feeds intake when producing mixing, then according to the side of feeding intake
Case carries out the dispensing work of material, is then transported in packetization module 3 again and carries out packing processing.The second level mixing device is set
Purpose is that it is possible to carry out uniform mixing again according to the different of waste plastic particles physico-chemical property in each storage container, thus into
The homogeneity and stability of one step raising finished product waste plastics performance.
Referring to fig. 2, material box 3-1 of the packetization module 3 by being located above and the packing below material box 3-1 are held
Row mechanism 3-2 is constituted, wherein the feed inlet of material box 3-1 is connect with the discharge port of second level mixing device, and material box 3-1's goes out
Material mouth and packing, which execute, to be connected between structure by particle conveying pipeline.When work, after second level mixing device completes mixing task, lead to
It crosses particle conveying pipeline mixed waste plastic particles are transported in material box 3-1, the waste plastic particles in material box 3-1
It falls on down to be packaged in executing agency 3-2 under the effect of gravity and carries out packing task.The advantages of this arrangement are as follows defeated using particle
The mode that expects pipe carries out material conveying has the advantages that convenient transportation, speed are fast, high-efficient.
Referring to Fig. 1-Fig. 2, the second level mixing device be multiple groups, the particle conveying pipeline include particle conveying supervisor and
Grain conveying branch pipe, wherein the discharge port of each second level mixing device pass sequentially through particle conveying branch pipe and particle conveying supervisor with
The material box 3-1 connection.The advantages of this arrangement are as follows, on the one hand, multiple groups second level mixing device can carry out useless modeling simultaneously
The mixing task for expecting particle, to double up mixing efficiency；On the other hand, in particle conveying supervisor and particle conveying branch pipe
During cooperating conveying, further mixing work can be carried out to waste plastic particles, so that the waste plastic particles after being packaged
Homogeneity it is more preferable.
Referring to Fig. 1 and Fig. 3, it is additionally provided with before the crushing washing dewatering module 1 and breaks up feeding module, this breaks up feeding module
It is equipped with bulk material device 10 and feeding device 11, when work, material is first passed through after bulk material device 10 breaks up, and then passes through feeding again
Material is delivered on crushing washing dewatering module 1 and handles by device 11.
- Fig. 6 referring to fig. 4 further includes environment-friendly disposal system, which includes sewage treatment module 8 and exhaust gas
Solid waste integrated treatment module 9, wherein the sewage treatment module 8 includes sewage conditioning tank 8-2, biochemical treatment apparatus 8-1, sinks
Shallow lake filter device, activated sludge adjust distributing reservoir and recycle-water conditioning tank, wherein the sewage of the sewage conditioning tank 8-2 into
Water end (W.E.) is connect by pipeline with waste plastics cleaning sullage discharge ends, and the sewage drainage end of the sewage conditioning tank 8-2 passes through pipeline
It is connect with the wastewater influent end of biochemical treatment apparatus 8-1, the activated sludge upstream end that the activated sludge adjusts distributing reservoir passes through
Pipeline connect with the activated sludge outlet side of precipitating filter device, the clear water upstream end of the recycle-water conditioning tank by pipeline and
Precipitate the clear water outlet side connection of filter device；The exhaust gas solid waste integrated treatment module includes emission-control equipment, exhaust gas receipts
Collection cover 9-2, mixing waste gas collection device 9-3, solid waste vacuum calcining device 9-8, chimney 9-6 and blower unit 9-61；Wherein,
The emission-control equipment includes biomembrane absorption tower 9-1, moisture separation device and activated carbon adsorption device, wherein described
Biomembrane absorption tower 9-1 passes through pipeline and dirt equipped with the exhaust gas entrance entered for exhaust gas, the top of biomembrane absorption tower 9-1
Activated sludge in water treatment facilities adjusts the activated sludge outlet side connection of distributing reservoir, the work of the biomembrane absorption tower bottom 9-1
Property sludge outlet connect with the activated sludge upstream end of biochemical treatment apparatus 8-1 by pipeline；The moisture separation device
Air inlet is connect by pipeline with the exhaust outlet of biomembrane absorption tower 9-1, and the exhaust outlet of moisture separation device passes through pipeline and work
Property charcoal adsorbent equipment air inlet connection, wherein the exhaust gas row of modified prilling granulator 2-1 is arranged in the gas sampling cover 9-2
9-5 connection, the mixing gas sampling dress are responsible for by air inlet between exhaust gas entrance and gas sampling cover 9-2 in the top in gas area
Set 9-3 by the first air intake branch 9-4 be connected to air inlet be responsible for 9-5 on, the solid waste vacuum calcining device 9-8 by second into
Gas branch pipe 9-9 is connected on air inlet supervisor 9-5.When work, the principle of sewage treatment are as follows: the sewage in crushing washing pond passes through
Water inlet pipe or open channel, which enter, drains into sewage conditioning tank, with a certain amount of activated sludge more than needed of memory and sewage pre-exposure to be processed
Gas mixing, realizes homogenizing；Sewage after preaeration is pumped into biochemical treatment apparatus；Realize aerobic treatment, precipitating and (detesting) oxygen
Biochemical treatment etc., precipitating (filtering) supernatant enter recycle-water conditioning tank for cleaning waste plastics cycling use of water；Sludge part more than needed
Distributing reservoir, which is adjusted, into activated sludge makees organism-absorbing for exhaust-gas treatment；Sludge part enters sewage conditioning tank, partially enters
Sludge press filtration or mummifying pool.The principle of exhaust-gas treatment are as follows: be granulated the exhaust gas of generation first after the collection of gas sampling cover, then by into
Gas supervisor, which delivers into emission-control equipment, to be absorbed and is handled, and the exhaust gas for completing to generate after absorption processing passes through row again
Tracheae, chimney are transported in atmosphere；During exhaust gas treatment, the activated sludge in activated sludge distributing reservoir enters biomembrane suction
Tower is received, the filler surface being arranged in tower forms biomembrane；Exhaust gas is adequately connect by biomembrane absorption tower with biomembrane
Touching, biomembrane effectively absorb the organic matter in exhaust gas；The activated sludge of biomembrane absorb the bottom of the tower discharge, returns to biochemistry
Processing unit 1 is handled；Exhaust gas after absorbing removes moisture removal by moisture separator, then after activated carbon adsorption it is up to standard
Outlet.The principle of fixed-end forces are as follows: waste plastics recovery generate solid waste first pass through separation after, in solid waste dust by first into
Gas branch pipe enters in air inlet supervisor.Waste plastics recovery produces the useless sieve for being stained with waste plastics impurity；The sieve passes through solid waste
After the processing of vacuum calcining device can reuse again, the exhaust gas generated in solid waste vacuum calcining device treatment process by second into
Gas branch pipe enters in admission line.Exhaust gas in admission line be mixed by air inlet supervisor enter emission-control equipment into
Row processing completes the waste water (containing activated sludge) generated after processing task and is displaced into weight in sewage conditioning tank by sewage pipe again
It is multiple to utilize.
Referring to fig. 4 and Fig. 5, the mixing waste gas collection device 9-3 are cyclone separator, the air outlet of the cyclone separator
It is connect with the first air intake branch 9-4, the mixing device in the feed inlet and Waste plastic treatment apparatus of rotary separator goes out
It is connected between port by mixing appendix.Wherein, useless modeling can be generated during carrying out material mixing due to mixing device
Expect fragment or waste plastic particles, sandstone and solid waste (pollutant of dust particles size) etc., it is therefore desirable to first with whirlwind point
Waste plastics fragment or waste plastic particles, sandstone and solid waste are separated from device, after completing separation task, then pass through described the
The solid waste generated after separation is transported in exhaust gas Integrated Processing Unit 9-1 and collects by one air intake branch 9-4, air inlet supervisor 9-5
Middle processing；So as to avoid solid waste from being directly discharged to pollute the environment in atmosphere.
Referring to fig. 4 and Fig. 5, the chimney 9-6 pass through the purified gas outlet of exhaust pipe 9-62 and activated carbon adsorption device
It is connect between chimney 9-6 by exhaust pipe, the blower unit 9-61 is centrifugal blower, which is arranged in exhaust pipe
On 9-62.When work, powerful centrifugal blower generates negative pressure at exhaust pipe 9-62, which promotes exhaust gas integrated treatment to fill
The exhaust gas set in each air duct of 9-1 and coupled each air intake branch automatically flows in exhaust pipe 9-62, then leads to again
It crosses chimney 9-6 to be discharged in atmosphere, so as to smoothly realize the collection, processing and discharge task of exhaust gas.What is be arranged in this way is good
Be in, be not only able to guide the exhaust gas that air inlet is responsible in 9-5, and can be to the stream of the exhaust gas in each air intake branch
To being oriented to, therefore sphere of action is more extensive.
Referring to fig. 4 and Fig. 5, a kind of waste plastics recycling system of the invention further include monitoring inspection platform 9-7, monitoring inspection
Equating platform 9-7 includes walking corridor 9-71 and ladder 9-72, wherein it is described walk corridor 9-71 be separately positioned on sewage-treatment plant 8-
The periphery of 1 and exhaust gas Integrated Processing Unit 9-1, including corridor 9-71 is walked on upper layer and corridor 9-71, the ladder 9-72 walk in lower layer
Setting walks corridor on upper layer and lower layer is walked between corridor.By the way that above-mentioned ladder 9-72 is arranged and walks corridor 9-71, behaviour can be facilitated
Make personnel and the tasks such as inspects, monitors and repair by random samples to exhaust gas Integrated Processing Unit 9-1.
The working principle of the invention:
When production, first waste plastics is crushed on crushing washing dewatering module 1, is cleaned and dehydration, is formed
Waste plastics fragment be transferred storage into sheet stock magazine 5, waste plastics is stored in multiple after multiple batches of processing
In sheet stock storage container (such as 100), then, using each sheet stock magazine 5 as a sample detecting unit, pumping is utilized
The method of sample detection one by one detects with the physical and chemical performance of material in each storage container of determination waste plastics, and ties to detection
Fruit is recorded.After completing Detection task, the multiple groups physico-chemical property that multiple batches of multiple sheet stock storage containers are formed is different
Testing result constitutes a database.In this way, before carrying out mixing task using level-one mixing device, first according to target product
Performance requirement, design a set of feed product assembled scheme, the feed product assembled scheme be embodied in select which sheet stock
Then the amount of the material of magazine 5 and selected material, the scheme that feeds intake when producing mixing carry out object according to the scheme that feeds intake
The material for the sheet stock magazine 5 chosen is transported in level-one mixing device and is uniformly mixed by the dispensing work of material.When one
After grade mixing device completes mixing task, sheet waste plastics is transported to modified be granulated in module 2 and is processed into waste plastic particles, so
It is transported in packetization module 3 again afterwards and carries out packing processing.
After being operated by above-mentioned mixing, the biggish waste plastics of the different performance difference in the source of different batches can be mixed
Collocation, to make that the physical and chemical performance for the material particles produced is uniform, stability is good.
Above-mentioned is the preferable embodiment of the present invention, but embodiments of the present invention are not limited by the foregoing content,
His any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention, should be
The substitute mode of effect, is included within the scope of the present invention.
Claims (10)
1. a kind of waste plastics recycling system, including crushing washing dewatering module, modified granulation module and packetization module, feature
It is, the crushing washing dewatering module and modified be granulated between module are equipped with level-one mixing device, the level-one mixing device packet
Include sheet stock mixer or sheet stock blending bucket and the sheet stock mixing agitator being arranged in sheet stock mixer or sheet stock blending bucket；Institute
It states between crushing washing dewatering module and level-one mixing device equipped with multiple for storing the broken of crushing washing dewatering module generation
The sheet stock magazine of sheet material, each sheet stock magazine constitute first detection unit.
2. waste plastics recycling system according to claim 1, which is characterized in that the crushing washing dewatering module, level-one
Mixing device and the modified module that is granulated are multiple groups.
3. waste plastics recycling system according to claim 2, which is characterized in that the modified granulation module and packing apparatus
Between be equipped with second level mixing device, which includes particle mixer or particle blending bucket and is arranged in particle mixing
Particle mixing rabbling mechanism in case or particle blending bucket；It is equipped between the modified granulation module and second level mixing device multiple
For storing the modified particle magazine for being granulated the granule materials that module generates, each particle magazine constitutes the second detection
Unit.
4. waste plastics recycling system according to claim 3, which is characterized in that the level-one mixing device and modified granulation
It is connected between module by conveying pipeline.
5. waste plastics recycling system according to claim 3, which is characterized in that the packing apparatus is by the Sheng that is located above
Hopper and the packing executing agency below material box are constituted, wherein the feed inlet of material box and going out for second level mixing device
Material mouth connection, the discharge port of material box and packing are executed and are connected between structure by particle conveying pipeline.
6. waste plastics recycling system according to claim 5, which is characterized in that the second level mixing device is multiple groups, institute
Stating particle conveying pipeline includes particle conveying supervisor and particle conveying branch pipe, wherein the discharge port of each second level mixing device is successively
It is connect by particle conveying branch pipe and particle conveying supervisor with the material box.
7. waste plastics recycling system according to claim 1, which is characterized in that it further include environment-friendly disposal system, the environmental protection
Processing system includes sewage treatment module and exhaust gas solid waste integrated treatment module, wherein the sewage treatment module includes sewage
Conditioning tank, biochemical treatment apparatus, precipitating filter device, activated sludge adjust distributing reservoir and recycle-water conditioning tank, wherein described
The wastewater influent end of sewage conditioning tank is connect by pipeline with waste plastics cleaning sullage discharge ends, the sewage of the sewage conditioning tank
Discharge ends are connected by the wastewater influent end of pipeline and biochemical treatment apparatus, and the activated sludge adjusts the activated sludge of distributing reservoir
Upstream end is connect by pipeline with the activated sludge outlet side for precipitating filter device, the clear water upstream end of the recycle-water conditioning tank
It is connect by pipeline with the clear water outlet side of precipitating filter device；The exhaust gas solid waste integrated treatment module includes exhaust-gas treatment dress
It sets, gas sampling cover, mixing waste gas collection device, solid waste vacuum calcining device；Wherein, the emission-control equipment includes biology
Film absorption tower, moisture separation device and activated carbon adsorption device, wherein the biomembrane absorption tower be equipped with for exhaust gas into
The top of the exhaust gas entrance entered, biomembrane absorption tower adjusts distributing reservoir by the activated sludge in pipeline and sewage-treatment plant
The connection of activated sludge outlet side, the activated sludge outlet of biomembrane absorb the bottom of the tower pass through the work of pipeline and biochemical treatment apparatus
Property sludge upstream end connection；The air inlet of the moisture separation device is connect by pipeline with the exhaust outlet on biomembrane absorption tower,
The exhaust outlet of moisture separation device is connected by the air inlet of pipeline and activated carbon adsorption device, wherein the gas sampling cover
The top in the exhausting waste gas area of modified prilling granulator is set, is responsible for and is connected by air inlet between exhaust gas entrance and gas sampling cover
It connects, the mixing waste gas collection device is connected on air inlet supervisor by the first air intake branch, the solid waste vacuum calcining device
It is connected on air inlet supervisor by the second air intake branch.
8. waste plastics recycling system according to claim 7, which is characterized in that the mixing waste gas collection device is whirlwind
Separator, the air outlet of the cyclone separator are connect with first air intake branch, the feed inlet and waste plastics of rotary separator
It is connected between the gas outlet of mixing device in processing unit by mixing appendix.
9. waste plastics recycling system according to claim 8, which is characterized in that it further include chimney and blower unit, it is described
Chimney is connected by the purified gas outlet of exhaust pipe and activated carbon adsorption device, and the blower unit is centrifugal blower, should be from
Heart blower is arranged on exhaust pipe.
10. waste plastics recycling system according to claim 9, which is characterized in that further include monitoring inspection platform, the monitoring
Inspection platform includes walking corridor and ladder, wherein it is described walk corridor be separately positioned on sewage-treatment plant and exhaust gas integrated treatment
The periphery of device, including corridor is walked on upper layer and corridor is walked by lower layer, the ladder setting upper layer walk corridor and lower layer walk corridor it
Between.
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|---|---|---|---|
| CN201810971190.XA CN108972954A (en) | 2018-08-23 | 2018-08-23 | A kind of waste plastics recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810971190.XA CN108972954A (en) | 2018-08-23 | 2018-08-23 | A kind of waste plastics recycling system |
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|---|---|---|---|---|
| US5702604A (en) * | 1995-09-06 | 1997-12-30 | Sharp Kabushiki Kaisha | Apparatus and method for waste water treatment utilizing granular sludge |
| CN104816402A (en) * | 2015-04-24 | 2015-08-05 | 冯愚斌 | Automatic packaging device and method of pelleting production of regenerative modification of recycled plastics |
| CN205416092U (en) * | 2016-02-16 | 2016-08-03 | 沈永灶 | Waste plastics processing system |
| CN209395085U (en) * | 2018-08-23 | 2019-09-17 | 广州市致顺科技有限公司 | A kind of waste plastics recycling system |
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2018
- 2018-08-23 CN CN201810971190.XA patent/CN108972954A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5702604A (en) * | 1995-09-06 | 1997-12-30 | Sharp Kabushiki Kaisha | Apparatus and method for waste water treatment utilizing granular sludge |
| CN104816402A (en) * | 2015-04-24 | 2015-08-05 | 冯愚斌 | Automatic packaging device and method of pelleting production of regenerative modification of recycled plastics |
| CN205416092U (en) * | 2016-02-16 | 2016-08-03 | 沈永灶 | Waste plastics processing system |
| CN209395085U (en) * | 2018-08-23 | 2019-09-17 | 广州市致顺科技有限公司 | A kind of waste plastics recycling system |
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