CN115503154A - Method for producing pc plastic particles by using waste plastic parts - Google Patents

Method for producing pc plastic particles by using waste plastic parts Download PDF

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Publication number
CN115503154A
CN115503154A CN202110696036.8A CN202110696036A CN115503154A CN 115503154 A CN115503154 A CN 115503154A CN 202110696036 A CN202110696036 A CN 202110696036A CN 115503154 A CN115503154 A CN 115503154A
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CN
China
Prior art keywords
plastic
particles
drying
sheet
waste
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Pending
Application number
CN202110696036.8A
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Chinese (zh)
Inventor
毛建华
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Suzhou Fulihua Plastic Technology Co ltd
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Suzhou Fulihua Plastic Technology Co ltd
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Application filed by Suzhou Fulihua Plastic Technology Co ltd filed Critical Suzhou Fulihua Plastic Technology Co ltd
Priority to CN202110696036.8A priority Critical patent/CN115503154A/en
Publication of CN115503154A publication Critical patent/CN115503154A/en
Pending legal-status Critical Current

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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
    • B29B17/02—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
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B2017/001—Pretreating the materials before recovery
    • 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
    • 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
    • B29B2017/0203—Separating plastics from 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
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0279—Optical identification, e.g. cameras or spectroscopy
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

The invention relates to the technical field of polycarbonate plastic particles, and discloses a method for producing pc plastic particles by using waste plastic parts, which comprises the following steps: sending the recovered pc plastic piece into a plastic crusher, and crushing the pc plastic piece by the plastic crusher to form a pc plastic sheet; conveying the pc plastic sheet into a cleaning pool, adding a solvent to wash the pc plastic sheet, removing impurities and carbides attached to the surface of the pc plastic sheet, and filtering the sheet to remove impurities and small particle debris when discharging from the cleaning pool; and (3) conveying the cleaned pc plastic sheet into a drying device for primary drying operation. According to the method for producing the pc plastic particles by utilizing the waste plastic parts, the waste pc plastic is subjected to recovery processing operation through recovery crushing, cleaning and filtering, drying and slicing, color sorting and classification, stacking and drying, hot melt mixing and granulation packaging, so that the influence of different pigment mixing and attached impurities on the quality of the plastic particles can be avoided, and the recycling value of the pc plastic is effectively improved.

Description

Method for producing pc plastic particles by using waste plastic parts
Technical Field
The invention relates to the technical field of polycarbonate plastic particles, in particular to a method for producing pc plastic particles by using waste plastic parts.
Background
Polycarbonate plastics, plastics taking polycarbonate as a main component, polycarbonate is amorphous polymer, becomes transparent glass-like objects after melting and cooling, has excellent optical and mechanical properties, higher melting point, low temperature resistance, small water absorption, better impact resistance, insulativity and aging resistance, and can resist inorganic and organic dilute acid and the like, can be used for manufacturing labels, instrument shells, furniture, automobile lamps, electric parts, instrument panels and the like, the dosage of the polycarbonate as a substrate of an optical disk is greatly increased, and pc plastic particles refer to plastic particles formed by the polycarbonate plastics and are raw materials for manufacturing pc plastic parts.
For the recovery of pc plastics, a regeneration method is usually adopted for recovery processing operation, and the waste plastics are directly reheated and plasticized for utilization.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for producing pc plastic particles by using waste plastic parts, which has the advantages of improving the granulation quality of reclaimed materials and the like, and solves the problems that the recovery of the pc plastic is generally carried out by adopting a regeneration method, the waste plastic is directly reheated and plasticized for utilization, the method has simple process, the treatment difficulty of the degraded and carbonized waste plastic is higher, the quality of the subsequently produced particles is obviously reduced under the influence of waste raw materials, and the quality of the products produced by the plastic particles is directly influenced.
(II) technical scheme
The technical scheme for solving the technical problems is as follows: a method for producing pc plastic granules from waste plastic parts, comprising the steps of:
1) Feeding the recovered pc plastic piece into a plastic crusher, and crushing the pc plastic piece by the plastic crusher to form a pc plastic sheet;
2) Conveying the pc plastic sheet into a cleaning pool, adding a solvent to wash the pc plastic sheet, removing impurities and carbides attached to the surface of the pc plastic sheet, and filtering the sheet to remove impurities and small particle debris when discharging from the cleaning pool;
3) Conveying the cleaned pc plastic sheet into a drying device for primary drying operation, slicing the pc plastic sheet after drying, and forming pc plastic sheet particles with approximate sizes by the sliced pc plastic sheet;
4) Color sorting and classifying the pc plastic flaky particles by using a plastic color sorter, collecting, stacking and placing the classified pc plastic flaky particles, and respectively carrying out subsequent processing operation;
5) Drying the color-selected and stacked pc plastic flaky particles by using a fluidized bed, wherein the drying temperature is 110-130 ℃, the drying time is controlled within 1-3h, and the water content of the dried pc plastic flaky particles is less than 0.03% when the dried pc plastic flaky particles are discharged;
6) Carrying out hot melting on the pc plastic flaky particles by using equipment, controlling the hot melting temperature to be 220-230 ℃, adding additives such as a toughening agent and a compatilizer after the pc plastic flaky particles are completely hot-melted, and carrying out mixing and stirring operation;
7) The mixed molten raw materials are sent into a plastic granulator, the temperature of the raw materials is controlled between 260 ℃ and 300 ℃ in the granulation and extrusion processes, and the produced granules can leave the factory after being cooled, inspected and packaged.
The beneficial effects of the invention are:
the method for producing the pc plastic particles by utilizing the waste plastic pieces comprises the steps of crushing the waste pc plastic pieces into pc plastic sheets by a plastic crusher, adding a solvent into a cleaning pool to clean the sheets, removing impurities and carbides attached to the surfaces of the sheets, filtering out impurities and small particle fragments, performing primary drying operation after filtering, slicing the pc plastic sheets after drying, performing color sorting classification on the pc plastic sheet particles by a plastic color sorter, separately placing raw materials with different colors, performing processing operation respectively, avoiding color mixing of recycled materials, performing drying operation on the pc plastic sheet particles by using a boiling bed, performing hot melting on the pc plastic sheet particles by using equipment, adding additives such as a toughening agent and a compatilizer after the pc plastic sheet particles are completely hot-melted, performing mixing and stirring operation, sending the melted raw materials into a plastic granulator, cooling the manufactured particles, performing quality inspection and packaging, and leaving the granulated particles out of the granulator.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, in the step 2), the filtered impurities and the small particle scraps are separated, and the small particle scraps are directly dried, hot-melted, added with additives, mixed and granulated, so that secondary pc plastic particles can be formed for recycling.
Adopt the beneficial effect of above-mentioned further scheme to be, avoid burning the harmful gas that handles the production, and carry out recycle to the tiny particle piece that filters out, can reduce raw materials for production's waste, improve resource utilization.
Further, gas generated by drying in the step 5) and gas generated by hot melting in the step 6) are recycled by using a purifying device and then discharged.
The beneficial effect who adopts above-mentioned further scheme is, avoids the harmful gas that drying and hot melt produced to get into and causes environmental pollution in the air for the production operation is more environmental protection.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In this embodiment, a method for producing pc plastic granules from waste plastic parts, as shown in fig. 1, comprises the following steps:
1) Feeding the recovered pc plastic part into a plastic crusher, and crushing the pc plastic part by the plastic crusher to form a pc plastic sheet, wherein the recovered waste pc plastic part can be a pressed pc plastic extrusion block;
2) Conveying the pc plastic sheet into a cleaning pool, adding a solvent to wash the pc plastic sheet, removing impurities and carbides attached to the surface of the pc plastic sheet, and filtering the sheet to remove impurities and small particle debris when discharging from the cleaning pool;
3) The cleaned pc plastic sheet is sent into a drying device for primary drying operation, and is cut into slices after being dried, the cut pc plastic sheet forms pc plastic sheet particles with approximate sizes, and the drying device can be a tunnel type drying device, so that the drying efficiency is improved;
4) Carrying out color sorting classification on the pc plastic flaky particles by using a plastic color sorter, collecting, stacking and placing the classified pc plastic flaky particles, and respectively carrying out subsequent processing operation;
5) Drying the pc plastic flaky particles subjected to color selection and stacking by using a fluidized bed, wherein the drying temperature is 110-130 ℃, the drying time is controlled within 1-3h, the water content of the dried pc plastic flaky particles is less than 0.03 percent when the dried pc plastic flaky particles are discharged, the drying time is controlled within 1-3h, the optimal temperature of the drying operation is about 120 ℃, the optimal drying time is 1.5h, the dried pc plastic flaky particles have the optimal physical properties, and the raw material color deepening and the physical properties decline can be caused by overlong drying time or overhigh drying temperature;
6) Carrying out hot melting on the pc plastic flaky particles by using equipment, controlling the hot melting temperature to be 220-230 ℃, adding additives such as a toughening agent and a compatilizer after the pc plastic flaky particles are completely hot melted, mixing and stirring, and respectively adding colorants aiming at the color stacking pigments generated in the step 4) to carry out color blending;
7) Feeding the mixed molten raw materials into a plastic granulator, controlling the temperature of the raw materials to be between 260 and 300 ℃ in the granulation and extrusion processes, and cooling the produced granules, and then carrying out quality inspection and packaging to leave the factory;
with step 2), the impurity and the tiny particle piece of filtering, separate, directly dry tiny particle piece, the hot melt, add additive mixture and granulation operation, can form secondary pc plastic granules and carry out recycle, avoid the harmful gas that incineration disposal produced, and carry out recycle to the tiny particle piece of filtering off, can reduce raw materials for production's waste, improve resource utilization, produce gas and step 6) internal hot melt in with step 5) internal drying, use clarification plant to carry out discharge after the recovery disposal, avoid drying and the harmful gas that the hot melt produced to cause environmental pollution in getting into the air, make the production operation more environmental protection.
The working process is as follows:
waste pc plastic pieces are crushed by a plastic crusher to form pc plastic sheets, a solvent is added into a cleaning pool to carry out cleaning operation on the sheets, impurities and carbides attached to the surfaces of the sheets are removed, the sheets are filtered, impurities and small particle fragments are filtered, preliminary drying operation is carried out after filtering, the pc plastic sheets are sliced after drying, color sorting and classification are carried out on the pc plastic sheet particles by a plastic color sorter, raw materials with different colors are separately placed and are respectively processed, so that color mixing of recycled materials is avoided, drying operation is carried out on the pc plastic sheet particles by using a fluidized bed, the pc plastic sheet particles are subjected to hot melting by using equipment, additives such as a toughening agent and a compatilizer are added after the pc plastic sheet particles are completely subjected to hot melting, mixing and stirring operation is carried out, the molten raw materials are sent into a plastic granulator, and the manufactured particles are subjected to quality inspection and packaging after being cooled.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. A method for producing pc plastic particles by using waste plastic parts is characterized by comprising the following steps:
1) Sending the recovered pc plastic piece into a plastic crusher, and crushing the pc plastic piece by the plastic crusher to form a pc plastic sheet;
2) Conveying the pc plastic sheet into a cleaning pool, adding a solvent to wash the pc plastic sheet, removing impurities and carbides attached to the surface of the pc plastic sheet, and filtering the sheet to remove impurities and small particle debris when discharging from the cleaning pool;
3) Conveying the cleaned pc plastic sheet into a drying device for primary drying operation, and slicing the pc plastic sheet after drying, wherein the sliced pc plastic sheet is formed into pc plastic flaky particles with approximate sizes;
4) Color sorting and classifying the pc plastic flaky particles by using a plastic color sorter, collecting, stacking and placing the classified pc plastic flaky particles, and respectively carrying out subsequent processing operation;
5) Drying the color-selected and stacked pc plastic flaky particles by using a fluidized bed, wherein the drying temperature is 110-130 ℃, the drying time is controlled within 1-3h, and the water content of the dried pc plastic flaky particles is less than 0.03 percent when the dried pc plastic flaky particles are discharged;
6) Carrying out hot melting on the pc plastic flaky particles by using equipment, controlling the hot melting temperature to be 220-230 ℃, adding additives such as a toughening agent and a compatilizer after the pc plastic flaky particles are completely hot-melted, and carrying out mixing and stirring operation;
7) The mixed melted raw materials are sent into a plastic granulator, the temperature of the raw materials is controlled to be 260-300 ℃ in the granulating and extruding process, and the produced granules can leave a factory after being cooled, inspected and packaged.
2. A method of producing pc plastics particles from waste plastics according to claim 1, wherein: separating the filtered impurities and the small particle scraps in the step 2), and directly drying, hot melting, adding additives, mixing and granulating the small particle scraps to form secondary pc plastic particles for recycling.
3. A method of producing pc plastic granules from waste plastic parts according to claim 1, wherein: and (4) carrying out recovery treatment on gas generated by drying in the step 5) and gas generated by hot melting in the step 6) by using a purification device, and then discharging.
CN202110696036.8A 2021-06-23 2021-06-23 Method for producing pc plastic particles by using waste plastic parts Pending CN115503154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110696036.8A CN115503154A (en) 2021-06-23 2021-06-23 Method for producing pc plastic particles by using waste plastic parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110696036.8A CN115503154A (en) 2021-06-23 2021-06-23 Method for producing pc plastic particles by using waste plastic parts

Publications (1)

Publication Number Publication Date
CN115503154A true CN115503154A (en) 2022-12-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110696036.8A Pending CN115503154A (en) 2021-06-23 2021-06-23 Method for producing pc plastic particles by using waste plastic parts

Country Status (1)

Country Link
CN (1) CN115503154A (en)

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