CN113977805A - Environment-friendly plastic product recovery process - Google Patents
Environment-friendly plastic product recovery process Download PDFInfo
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- CN113977805A CN113977805A CN202111255786.8A CN202111255786A CN113977805A CN 113977805 A CN113977805 A CN 113977805A CN 202111255786 A CN202111255786 A CN 202111255786A CN 113977805 A CN113977805 A CN 113977805A
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- 239000004033 plastic Substances 0.000 title claims abstract description 166
- 229920003023 plastic Polymers 0.000 title claims abstract description 166
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000011027 product recovery Methods 0.000 title abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 238000005406 washing Methods 0.000 claims abstract description 26
- 238000004806 packaging method and process Methods 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 21
- 238000005202 decontamination Methods 0.000 claims abstract description 7
- 230000003588 decontaminative effect Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 88
- 239000012634 fragment Substances 0.000 claims description 75
- 239000000463 material Substances 0.000 claims description 25
- 238000002791 soaking Methods 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 17
- 238000004064 recycling Methods 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 235000021419 vinegar Nutrition 0.000 claims description 8
- 239000000052 vinegar Substances 0.000 claims description 8
- 238000005485 electric heating Methods 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims 7
- 230000002070 germicidal effect Effects 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 30
- 239000003292 glue Substances 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 7
- 229910052729 chemical element Inorganic materials 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000002985 plastic film Substances 0.000 description 11
- 238000012856 packing Methods 0.000 description 9
- 239000004744 fabric Substances 0.000 description 6
- 230000001954 sterilising effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- 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
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/007—Heating the liquid
-
- 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
- B29B2017/0237—Mechanical separating techniques; devices therefor using density difference
- B29B2017/0244—Mechanical separating techniques; devices therefor using density difference in liquids
-
- 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
-
- 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
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/044—Knives
-
- 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)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses an environment-friendly plastic product recovery process, and relates to the technical field of plastic recovery. The environment-friendly plastic product recovery process comprises four steps of raw material crushing, impurity separation, decontamination cleaning and color sorting packaging. This environment-friendly plastic products recovery process, can be with remaining greasy dirt of PET plastics piece and glue, carry out comparatively effectual clearance and cleanness, and washing liquid raw materials cost is lower, still do not contain more chemical element, not only can not influence the recovery cost of this technology, still avoided the more destruction that leads to the fact its recovery quality of chemical element, water selection and look selection two kinds of modes of still having adopted bottle lid and wrapping paper and having separated, need not artifical manual with its separation, the manual operation of having avoided needing, produce the condition that wastes time and energy and efficiency are lower, and the separation effect is better, avoided bottle lid and wrapping paper not caused the circumstances that recovery quality reduces by effectual separation, the relative improvement this processing technology's practicality.
Description
Technical Field
The invention relates to the technical field of plastic recovery, in particular to an environment-friendly plastic product recovery process.
Background
The plastic products can be scattered in every corner of a city in the using process, so that not only can the visual pollution be caused, but also the structure of the plastic products is stable and is not easy to be naturally degraded, if the plastic products are not recycled, the plastic products become pollutants in the environment and permanently exist and are continuously accumulated, and the plastic products can cause great harm to the environment.
The existing part of environment-friendly plastic product recovery processes have the problem of high processing cost during recovery, for example, the recovery of PET plastic bottles generally comprises the steps of manually separating bottle caps and packing paper from the PET plastic bottles, then crushing, cleaning and the like during recovery of the PET plastic bottles, and also has the problem of uneven recovery quality mainly because glue and attached oil stains on the surfaces of the PET plastic bottles are not effectively removed.
Disclosure of Invention
The invention aims to provide an environment-friendly plastic product recycling process to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an environment-friendly plastic product recycling process comprises the following steps: step one, crushing raw materials: preparing a PET plastic bottle raw material, transferring and putting the PET plastic bottle raw material into a roller crusher by using a conveyor belt type feeding machine, then controlling a crushing blade of the roller crusher to crush the PET plastic bottle to simultaneously perform feeding and crushing treatment, wherein the length and the width of the crushed PET plastic fragments are required to be within 4 x 4-6 x 6 cm, meanwhile, placing a material transferring trolley at the discharging hopper position of the roller crusher, and then collecting the PET plastic fragments to finish primary processing;
step two, impurity separation: transferring the PET plastic fragments collected by the transferring cart in the step one to a soaking box, then pouring the PET plastic fragments into the soaking box containing water for soaking, fishing out the bottle caps and the impurities floating on the surface for cleaning during soaking, fishing out the PET plastic fragments after cleaning, and draining for later use, thus finishing the operation of separating the impurities;
step three, decontamination and cleaning: adding the PET plastic fragments subjected to the impurity separation operation in the step two into a vertical stirring cleaning tank, adding cleaning liquid and water into the vertical stirring cleaning tank before adding, wherein the ratio of the cleaning liquid to the water is 100: 6, controlling a stirring blade of the vertical stirring cleaning tank to stir after the cleaning liquid and the water are added, controlling the rotating speed of the stirring blade to be 82-96r/min, adding the PET plastic fragments into the vertical stirring cleaning tank after stirring for 2-4 minutes, then controlling the rotating speed of the stirring blade to be increased to 102r/min, and discharging and collecting the PET plastic fragments after stirring;
step four, color selection and packaging: and (3) drying the PET plastic chips collected in the third step, then carrying out color sorting treatment by using a color sorting machine, and immediately packaging by using a quantitative packaging machine to obtain a finished product of the environment-friendly plastic product recycling process.
Preferably, after the material transferring trolley is placed at the discharging hopper of the roller crusher in the first step, an electric fan and a material distributing bag are required to be installed at the discharging hopper, and the packing paper crushed together with the PET plastic bottle is blown into the material distributing bag for collection, so that the packing paper can be conveniently separated by winnowing.
Preferably, the cleaning solution in the third step comprises the following raw materials in parts by weight: 5-7 parts of white vinegar, 6-8 parts of degumming agent, 5-7 parts of alcohol and 6-8 parts of washing water, and the white vinegar, the degumming agent, the alcohol and the washing water are mixed uniformly and then put into use, so that oil stains and glue on the PET plastic sheet can be conveniently and effectively removed.
Preferably, an electric heating device is required to be arranged in the stirring and cleaning tank in the third step, the stirring blade cannot stop rotating before the temperature is heated to 60-70 ℃, the rotation of the stirring blade can be stopped when the temperature reaches 60-70 ℃, then the stirring can be completed, and oil stains and glue on the PET plastic sheet can be more effectively removed.
Preferably, when the PET plastic chips are dried in the third step, the selected equipment for drying is a vertical dryer, then the PET plastic chips are added into the vertical dryer, and the vertical dryer is heated to 65-73 ℃ and is kept for 10-15 minutes, so that the mat is used for next color selection.
Preferably, the vertical dryer selected in the third step is required to have a material stirring function, then the rotation of the stirring fan blades is controlled, the rotation speed is controlled to be 82-96r/min, and after the stirring is finished, the vertical dryer can be discharged and put into the next step for use, so that the heating is ensured to be uniform enough.
Preferably, when the PET plastic chips are blanked and collected in the third step, the PET plastic chips need to be added into a material washing machine for secondary washing, after washing, the plastic pieces are drained, and then the PET plastic pieces can be put into the fourth step for processing, so that the PET plastic pieces can be conveniently subjected to secondary elutriation.
Preferably, after the color sorting of the PET plastic chips is completed in the fourth step, the PET plastic chips are conveyed into a quantitative packaging machine by using a conveyor belt type feeding machine, and meanwhile, an ultraviolet sterilizing lamp is installed on the conveyor belt type feeding machine to irradiate and sterilize the PET plastic chips, so that the recovery quality of the process is improved.
Advantageous effects
Compared with the prior art, the invention provides an environment-friendly plastic product recovery process, which has the following beneficial effects:
1. this environment-friendly plastic products recovery process, the washing liquid has been added in the abluent step of scrubbing, raw materials in its washing liquid can be with remaining greasy dirt and glue in PET plastic chip surface, carry out comparatively effectual clearance and cleanness, when having avoided PET plastic chip recycle, its remaining greasy dirt and glue are to the negative effects that its secondary use caused, the improvement of relativity retrieves the quality, and the raw materials of chooseing for use in the washing liquid not only the cost is lower, still do not contain more chemical element, not only can not influence the recovery cost of this technology, still avoided the more destruction that leads to the fact its recovery quality of chemical element in the washing liquid, the improvement of relativity this recovery process's practicality.
2. This environment-friendly plastic products recovery process, the bottle lid and the wrapping paper that have adopted water to select and select two kinds of modes to carry its plastic bottle itself to separate, need not artifical manual its separation, and then not only improved recovery efficiency, still avoided needing artifical the operation, produce the condition that wastes time and energy and efficiency are lower, and two kinds of separation modes make its separation effect better, bottle lid and wrapping paper have been avoided adulterating in the PET plastic piece, cause the condition that the recovery quality reduces, the improvement of relativity this processing technology's practicality, secondly, this recovery technology cost is lower, be convenient for promote and use, make the contribution for plastics sustainable development.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: an environment-friendly plastic product recycling process comprises the following steps: step one, crushing raw materials: preparing a PET plastic bottle raw material, transferring and putting the PET plastic bottle raw material into a roller type crusher by using a conveyor belt type feeding machine, then controlling a crushing blade of the roller type crusher to crush the PET plastic bottle to achieve simultaneous feeding and crushing treatment, wherein the length and the width of the crushed PET plastic fragments are required to be within 4 multiplied by 4 cm, meanwhile, a material transferring trolley is placed at a discharging hopper of the roller type crusher, then the PET plastic fragments are collected to finish primary processing, in the first step, after the material transferring trolley is placed at the discharging hopper of the roller type crusher, an electric fan and a cloth bag are required to be installed at the discharging hopper, and the packing paper crushed together with the PET plastic bottle is blown into the cloth bag to be collected;
step two, impurity separation: transferring the PET plastic fragments collected by the transferring cart in the step one to a soaking box, then pouring the PET plastic fragments into the soaking box containing water for soaking, fishing out the bottle caps and the impurities floating on the surface for cleaning during soaking, fishing out the PET plastic fragments after cleaning, and draining for later use, thus finishing the operation of separating the impurities;
step three, decontamination and cleaning: adding the PET plastic fragments subjected to the impurity separation operation in the step two into a vertical stirring cleaning tank, adding cleaning liquid and water into the vertical stirring cleaning tank before adding, wherein the ratio of the cleaning liquid to the water is 100: 6, controlling a stirring paddle of the vertical stirring cleaning tank to stir after the cleaning liquid and the water are added, controlling the rotating speed of the stirring paddle to be 82r/min, stirring the stirring paddle for 2 minutes, adding the PET plastic fragments into the vertical stirring cleaning tank, then controlling the rotating speed of the stirring paddle to be increased to 102r/min, blanking and collecting the PET plastic fragments after stirring is finished, wherein the cleaning liquid in the step three comprises the following raw materials in parts by weight: 5 parts of white vinegar, 6 parts of degumming agent, 5 parts of alcohol and 6 parts of washing water, which are uniformly mixed and then put into use, wherein an electric heating device is required to be arranged in a stirring and cleaning tank in the third step, the stirring blade can not stop rotating before the temperature is heated to 60 ℃, the rotation of the stirring blade can be stopped when the temperature reaches 60 ℃, then the stirring can be completed, when the PET plastic fragments are dried in the third step, the selected device for drying is a vertical drier, then the PET plastic fragments are added into the vertical drier, the vertical drier is heated to 65 ℃ and is maintained for 10 minutes, the vertical drier selected in the third step is required to have the function of stirring materials, then the rotation speed of stirring blades is controlled to 82r/min, after the stirring is completed, the PET plastic fragments can be discharged and put into use in the next step, when the PET plastic fragments are discharged and collected in the third step, the plastic sheets are required to be added into a material washing machine for secondary washing, and after washing is finished, the plastic sheets are drained, and then the plastic sheets can be put into the fourth step for processing;
step four, color selection and packaging: drying the PET plastic fragments collected in the third step, then carrying out color sorting treatment by using a color sorting machine, immediately packaging the PET plastic fragments by using a quantitative packaging machine to obtain a finished product of the environment-friendly plastic product recovery process, after the color sorting of the PET plastic fragments in the fourth step is finished, conveying the PET plastic fragments into the quantitative packaging machine by using a conveyor belt type feeding machine, and simultaneously, installing an ultraviolet sterilizing lamp on the conveyor belt type feeding machine to irradiate and sterilize the PET plastic fragments.
Example two: an environment-friendly plastic product recycling process comprises the following steps: step one, crushing raw materials: preparing a PET plastic bottle raw material, transferring and putting the PET plastic bottle raw material into a roller crusher by using a conveyor belt type feeding machine, then controlling a crushing blade of the roller crusher to crush the PET plastic bottle to achieve simultaneous feeding and crushing treatment, wherein the length and the width of the crushed PET plastic fragments are required to be within 5 multiplied by 5 cm, meanwhile, a material transferring trolley is placed at a discharging hopper of the roller crusher, then the PET plastic fragments are collected to finish primary processing, in the first step, after the material transferring trolley is placed at the discharging hopper of the roller crusher, an electric fan and a cloth bag are required to be installed at the discharging hopper, and the packing paper crushed together with the PET plastic bottle is blown into the cloth bag to be collected;
step two, impurity separation: transferring the PET plastic fragments collected by the transferring cart in the step one to a soaking box, then pouring the PET plastic fragments into the soaking box containing water for soaking, fishing out the bottle caps and the impurities floating on the surface for cleaning during soaking, fishing out the PET plastic fragments after cleaning, and draining for later use, thus finishing the operation of separating the impurities;
step three, decontamination and cleaning: adding the PET plastic fragments subjected to the impurity separation operation in the step two into a vertical stirring cleaning tank, adding cleaning liquid and water into the vertical stirring cleaning tank before adding, wherein the ratio of the cleaning liquid to the water is 100: 6, controlling a stirring blade of the vertical stirring cleaning tank to stir after the cleaning liquid and the water are added, controlling the rotating speed of the stirring blade to be 89r/min, stirring the stirring blade for 3 minutes, adding the PET plastic fragments into the vertical stirring cleaning tank, then controlling the rotating speed of the stirring blade to be increased to 112r/min, blanking and collecting the PET plastic fragments after stirring is finished, wherein the cleaning liquid in the step three comprises the following raw materials in parts by weight: 6 parts of white vinegar, 7 parts of degumming agent, 6 parts of alcohol and 7 parts of washing water are uniformly mixed and then put into use, electric heating equipment is required to be arranged in a stirring and cleaning tank in the third step, the stirring paddle can not stop rotating before the temperature is heated to 65 ℃, the rotation of the stirring paddle can be stopped when the temperature reaches 65 ℃, then stirring can be completed, when PET plastic fragments are dried in the third step, the equipment selected for drying is a vertical drier, then the PET plastic fragments are added into the vertical drier, the vertical drier is heated to 69 ℃ and is maintained for 12.5 minutes, the vertical drier selected in the third step is required to have the function of stirring materials, then the rotation speed of stirring blades is controlled to 89r/min, after stirring is completed, the PET plastic fragments can be discharged and put into the next step for use, when the PET plastic fragments are discharged and collected in the third step, the plastic sheets are required to be added into a material washing machine for secondary washing, and after washing is finished, the plastic sheets are drained, and then the plastic sheets can be put into the fourth step for processing;
step four, color selection and packaging: drying the PET plastic fragments collected in the third step, then carrying out color sorting treatment by using a color sorting machine, immediately packaging the PET plastic fragments by using a quantitative packaging machine to obtain a finished product of the environment-friendly plastic product recovery process, after the color sorting of the PET plastic fragments in the fourth step is finished, conveying the PET plastic fragments into the quantitative packaging machine by using a conveyor belt type feeding machine, and simultaneously, installing an ultraviolet sterilizing lamp on the conveyor belt type feeding machine to irradiate and sterilize the PET plastic fragments.
Example three: an environment-friendly plastic product recycling process comprises the following steps: step one, crushing raw materials: preparing a PET plastic bottle raw material, transferring and putting the PET plastic bottle raw material into a roller type crusher by using a conveyor belt type feeding machine, then controlling a crushing blade of the roller type crusher to crush the PET plastic bottle to achieve simultaneous feeding and crushing treatment, wherein the length and the width of the crushed PET plastic fragments are required to be within 6 multiplied by 6 centimeters, meanwhile, a material transferring trolley is placed at a discharging hopper of the roller type crusher, then the PET plastic fragments are collected to finish primary processing, in the first step, after the material transferring trolley is placed at the discharging hopper of the roller type crusher, an electric fan and a cloth bag are required to be installed at the discharging hopper, and the packing paper crushed together with the PET plastic bottle is blown into the cloth bag to be collected;
step two, impurity separation: transferring the PET plastic fragments collected by the transferring cart in the step one to a soaking box, then pouring the PET plastic fragments into the soaking box containing water for soaking, fishing out the bottle caps and the impurities floating on the surface for cleaning during soaking, fishing out the PET plastic fragments after cleaning, and draining for later use, thus finishing the operation of separating the impurities;
step three, decontamination and cleaning: adding the PET plastic fragments subjected to the impurity separation operation in the step two into a vertical stirring cleaning tank, adding cleaning liquid and water into the vertical stirring cleaning tank before adding, wherein the ratio of the cleaning liquid to the water is 100: 6, controlling a stirring paddle of the vertical stirring cleaning tank to stir after the cleaning liquid and the water are added, controlling the rotating speed of the stirring paddle to be 96r/min, stirring the stirring paddle for 4 minutes, adding the PET plastic fragments into the vertical stirring cleaning tank, then controlling the rotating speed of the stirring paddle to be increased to 122r/min, blanking and collecting the PET plastic fragments after stirring is finished, wherein the cleaning liquid in the step three comprises the following raw materials in parts by weight: 7 parts of white vinegar, 8 parts of degumming agent, 7 parts of alcohol and 8 parts of washing water, wherein the white vinegar, the degumming agent, the alcohol and the washing water are uniformly mixed and then put into use, electric heating equipment is required to be arranged in a stirring and cleaning tank in the third step, the stirring blade can not stop rotating before the temperature is heated to 70 ℃, the rotation of the stirring blade can be stopped when the temperature reaches 70 ℃, then stirring can be completed, when PET plastic fragments are dried in the third step, the equipment selected for drying is a vertical drier, then the PET plastic fragments are added into the vertical drier, the vertical drier is heated to 73 ℃ and is maintained for 15 minutes, the vertical drier selected in the third step is required to have the function of stirring materials, then the rotation speed of stirring blades is controlled at 96r/min, after stirring is completed, the PET plastic fragments can be discharged and put into use in the next step, when the PET plastic fragments are discharged and collected in the third step, the plastic sheets are required to be added into a material washing machine for secondary washing, and after washing is finished, the plastic sheets are drained, and then the plastic sheets can be put into the fourth step for processing;
step four, color selection and packaging: drying the PET plastic fragments collected in the third step, then carrying out color sorting treatment by using a color sorting machine, immediately packaging the PET plastic fragments by using a quantitative packaging machine to obtain a finished product of the environment-friendly plastic product recovery process, after the color sorting of the PET plastic fragments in the fourth step is finished, conveying the PET plastic fragments into the quantitative packaging machine by using a conveyor belt type feeding machine, and simultaneously, installing an ultraviolet sterilizing lamp on the conveyor belt type feeding machine to irradiate and sterilize the PET plastic fragments.
It can be seen from this that: the existing environment-friendly plastic product recovery process has the problem of higher processing cost during recovery, for example, the recovery of PET plastic bottles is realized by manually separating bottle caps and packing paper from the PET plastic bottles, then crushing, cleaning and the like during the recovery of the PET plastic bottles, the environment-friendly plastic product recovery process adds cleaning liquid in the step of decontamination cleaning, raw materials in the cleaning liquid can effectively clean and clean residual oil stains and glue on the surfaces of PET plastic fragments, the negative influence of the residual oil stains and glue on the secondary use of the PET plastic fragments during the recovery and utilization of the PET plastic fragments is avoided, the recovery quality is relatively improved, the selected raw materials in the cleaning liquid have lower cost and do not contain more chemical elements, the recovery cost of the process is not influenced, and the damage of more chemical elements in the cleaning liquid on the recovery quality is avoided, the practicability of the recovery process is relatively improved, the problem of uneven recovery quality also exists, mainly because the glue and the attached oil stains on the surface of the PET plastic bottle are not effectively removed, the environment-friendly plastic product recovery process adopts two modes of water separation and color separation to separate the bottle cap and the packing paper carried by the plastic bottle without manual separation, thereby not only improving the recovery efficiency, but also avoiding the conditions of time and labor waste and lower efficiency caused by manual operation, and the two separation modes lead the separation effect to be better, avoid the bottle cap and the packing paper from being mixed in the PET plastic fragments, the recovery quality is reduced, the practicability of the processing technology is relatively improved, and secondly, the recycling process has low cost, is convenient to popularize and use, and makes a contribution to the sustainable development of plastics.
Claims (8)
1. An environment-friendly plastic product recycling process is characterized by comprising the following steps: step one, crushing raw materials: preparing a PET plastic bottle raw material, transferring and putting the PET plastic bottle raw material into a roller crusher by using a conveyor belt type feeding machine, then controlling a crushing blade of the roller crusher to crush the PET plastic bottle to simultaneously perform feeding and crushing treatment, wherein the length and the width of the crushed PET plastic fragments are required to be within 4 x 4-6 x 6 cm, meanwhile, placing a material transferring trolley at the discharging hopper position of the roller crusher, and then collecting the PET plastic fragments to finish primary processing;
step two, impurity separation: transferring the PET plastic fragments collected by the transferring cart in the step one to a soaking box, then pouring the PET plastic fragments into the soaking box containing water for soaking, fishing out the bottle caps and the impurities floating on the surface for cleaning during soaking, fishing out the PET plastic fragments after cleaning, and draining for later use, thus finishing the operation of separating the impurities;
step three, decontamination and cleaning: adding the PET plastic fragments subjected to the impurity separation operation in the step two into a vertical stirring cleaning tank, adding cleaning liquid and water into the vertical stirring cleaning tank before adding, wherein the ratio of the cleaning liquid to the water is 100: 6, controlling a stirring blade of the vertical stirring cleaning tank to stir after the cleaning liquid and the water are added, controlling the rotating speed of the stirring blade to be 82-96r/min, adding the PET plastic fragments into the vertical stirring cleaning tank after stirring for 2-4 minutes, then controlling the rotating speed of the stirring blade to be increased to 102r/min, and discharging and collecting the PET plastic fragments after stirring;
step four, color selection and packaging: and (3) drying the PET plastic chips collected in the third step, then carrying out color sorting treatment by using a color sorting machine, and immediately packaging by using a quantitative packaging machine to obtain a finished product of the environment-friendly plastic product recycling process.
2. The recycling process of environmental protection plastic products as claimed in claim 1, wherein: in the first step, after the material turning cart is placed at the discharging hopper of the roller type crusher, an electric fan and a material distribution bag are required to be installed at the discharging hopper, and the packaging paper crushed together with the PET plastic bottle is blown into the material distribution bag to be collected.
3. The recycling process of environmental protection plastic products as claimed in claim 1, wherein: the cleaning solution in the third step comprises the following raw materials in parts by weight: 5-7 parts of white vinegar, 6-8 parts of degumming agent, 5-7 parts of alcohol and 6-8 parts of washing water, and the white vinegar, the degumming agent, the alcohol and the washing water are uniformly mixed and then put into use.
4. The recycling process of environmental protection plastic products as claimed in claim 3, wherein: and in the third step, an electric heating device is required to be arranged in the stirring and cleaning tank, the stirring blade cannot stop rotating before the temperature is heated to 60-70 ℃, the rotation of the stirring blade can be stopped when the temperature reaches 60-70 ℃, and then the stirring can be finished.
5. The recycling process of environmental protection plastic products as claimed in claim 4, wherein: and in the third step, when the PET plastic chips are dried, the selected equipment for drying is a vertical dryer, and then after the PET plastic chips are added into the vertical dryer, the vertical dryer is heated to 65-73 ℃ and is maintained for 10-15 minutes.
6. The recycling process of environmental protection plastic products as claimed in claim 5, wherein: and (3) the vertical dryer selected in the third step is required to have a material stirring function, then the rotation of the stirring fan blades is controlled, the rotating speed is controlled to be 82-96r/min, and after the stirring is finished, the material can be discharged and put into the next step for use.
7. The recycling process of environmental protection plastic products as claimed in claim 6, wherein: and in the third step, when the PET plastic fragments are fed and collected, the PET plastic fragments need to be added into a material washing machine for secondary cleaning, after the cleaning is finished, the plastic fragments are drained, and then the PET plastic fragments can be put into the fourth step for processing.
8. The recycling process of environmental protection plastic products as claimed in claim 1, wherein: after the color sorting of the PET plastic chips is completed in the fourth step, the PET plastic chips are conveyed into a quantitative packaging machine by using a conveyor belt type feeding machine, and meanwhile, an ultraviolet germicidal lamp is installed on the conveyor belt type feeding machine to irradiate and sterilize the PET plastic chips.
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