WO2020087137A1 - Machine for chemical processing of polymer waste - Google Patents

Machine for chemical processing of polymer waste Download PDF

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Publication number
WO2020087137A1
WO2020087137A1 PCT/BG2019/000009 BG2019000009W WO2020087137A1 WO 2020087137 A1 WO2020087137 A1 WO 2020087137A1 BG 2019000009 W BG2019000009 W BG 2019000009W WO 2020087137 A1 WO2020087137 A1 WO 2020087137A1
Authority
WO
WIPO (PCT)
Prior art keywords
washing chamber
filter housing
main body
machine
cover lid
Prior art date
Application number
PCT/BG2019/000009
Other languages
French (fr)
Inventor
Serzho Simeonov ZHEKOV
Atanas Stoilov BOBOKOV
Plamen Stoilov BOBOKOV
Original Assignee
Astech 2015 Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Astech 2015 Ltd filed Critical Astech 2015 Ltd
Publication of WO2020087137A1 publication Critical patent/WO2020087137A1/en

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Classifications

    • 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
    • B08B3/044—Cleaning involving contact with liquid using agitated containers in which the liquid and articles or material are placed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
    • 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
    • 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
    • B08B3/102—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 with means for agitating the 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
    • B08B3/10—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
    • B08B3/102—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 with means for agitating the liquid
    • B08B3/104—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 with means for agitating the liquid using propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
    • 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
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0286—Cleaning means used for separation
    • B29B2017/0289—Washing the materials in liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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

Definitions

  • the machine is intended for use in the chemical industry for the processing of highly contaminated polymeric materials when it is necessary to wash polymers with a porous structure and especially when soaking and multistage chemical treatments is required.
  • the problem to be solved by the invention is to create a machine for chemical processing of polymer waste, which allows to carry out an industrial multistage process and its complete automation.
  • a machine for chemical processing of polymer waste which includes washing chamber.
  • the washing chamber is formed by a main body comprising an upper cylindrical portion with a cover lid and a lower part with a truncated cone shape, the small base of which is located below.
  • a filter housing in which is inserted a filter grid.
  • the filter housing is cylindrical with an upper and a lower flange, and its fitting to the small base of the main body is done by its upper flange with bolt connections.
  • recirculation oudet connected to a pump, followed by a feeding pipeline of a recirculation circuit;
  • a knife gate valve is fitted to the lower flange of the filter housing.
  • Both the housing - the main body and the filter housing - are covered by the relevant wrapping heat-insulations.
  • a mechanical stirrer made up of opposing tubular elements, to which are fixed inclined blades.
  • the tubular elements have a shape corresponding to the inner shape of the main body and are fitted to a central tubular element.
  • the upper end of the central tubular element is connected to a motor-gear, and its lower end, ending with two radial asymmetrically inclined blades, is located in the filter housing.
  • the cover lid In the cover lid there is a supply opening for the material processed as well as a water inlet.
  • To the cover lid are mounted at least two pipes which are inclined to the central tubular element and are closed at their lower end and with an upper end located above the cover lid.
  • the lower ends of the inclined pipes are located at a height up to the middle of the lower conical part of the main body and at a distance from one another of at least 1/3 of the diameter of washing chamber at the same level.
  • the pipes have a perforation along the length, the perforation being on the part located in the washing chamber.
  • At least one of the inclined pipes is recirculating and at least another one - solution-feeding.
  • the recirculation circuit is formed by the recirculation outlet ⁇ connected to the pump to which outlet is connected a feeding pipeline, which has a draining deviation to a water preparation and wastewater treatment station and through corresponding valves is connected to the recirculating pipe alternatively - directly and also through a heat exchanger.
  • the machine also has an automatic control system.
  • Mechanical stirrer preferably should have a reverse mode of operation.
  • the advantages of the machine for chemital processing of polymer waste, according to the invention lies ' in the opportunity that several consecutive chemical treatments in the“batch” process mode could be carried out in the same machine, achieving the highest possible cleansing degree of the polymers, especially those with a porous structure.
  • the machine allows complete automation of industrial processing, draining and replacement or refreshing of the used solutions during processing.
  • Figure 1 is a vertical sectional view of the machine according to the invention
  • ⁇ Figure 2 is a view of A-A of Figure 1;
  • Figure 3 is a schematic diagram of the machine in the operating mode.
  • washing chamber 1 is formed by a main body 2 comprising an upper cylindrical portion 3 with a cover lid 4 and a lower part 5 with a truncated cone shape, the small base 6 of which is located below.
  • a filter housing 7 in which a filter grid 8 is inserted, as shown in figure 1.
  • the filter housing 7 is cylindrical with an upper flange 71 and a lower flange 72. The fitting of the filter housing 7 to the small base 6 of the main body 2 is done by the upper flange “ 72 with bolt connections.
  • a recirculation outlet.9 connected to pump 10 followed by a feeding pipeline 11 of a recirculation circuit 12.
  • a knife gate valve 13 To the lower flange 72 of the filter housing.7 is. fitted a knife gate valve 13. It may be a. pneumatic one driven by a pneumatic cylinder or electrically operated. Figure 1 shows an example using a pneumatic knife gate valve. Both housings - main body one 2 and filter one 7 - are covered by a relevant wrapping heat-insulations 14, 15. To fix the machine in the designated place, fitting heels 16 are provided, welded to the main body 2, as shown in figure 2 und figure 3. The fitting heels 16 have the shape, selected by the experienced and accredited specialist in this field and is subject to custom design, and their configuration is not a subject of the invention and will therefore not be considered in detail in the present description. ⁇
  • a mechanical stirrer 17 composed of opposite tubular elements 18; to which are fixed inclined blades 19.
  • the blades have a slope of 45°, but depending on the particular application of the machine and the type of construction, another suitable slope can be selected.
  • the top blades are provided to have a inclination which is reversed compared to the others.
  • the tubular elements 18 have a shape corresponding to the inner shape of the main body 2.and are mounted to central tubular element 20, the upper end of which is connected to a motor-gear 21 for driving the mechanical stirrer 17.
  • the preferred option is the mechanical stirrer 17 to ⁇ operate with reversing mode one.
  • the rotation speed of its movement is in the range of 2-4 revolutions per minute.
  • the central tubular element 20 has -.a lower end located in the filter housing 7 and ends with two radial asymmetrically inclined blades 22. ⁇ ⁇
  • a supply opening 23 for the material processed, as well as a water inlet 24 is formed in the cover lid 4 of the main body 2 .
  • tubes 25, 26 with an upper end located above the coyer lid 4.
  • the inclined tubes 25, 26 are closed at their lower ends. Their inclination relative to the central tubular member 20 is 15°, as it is provided in the embodiment, shown in Figure 1.
  • the lower ends of the inclined pipes 25, 26 are located at a height up to the middle of the lower conical part 5 of the main body 2 and at a distance from one another of at least 1/3 of the diameter D of the washing chamber 1 at the same level - middle . of the lower conical part 5. In the specific example, this distance is about 645-655 mm.
  • Tubes 25, 26 have a perforation 27 along the length, the perforation 27 being located in the washing chamber 1.
  • the inclined pipes 25, 26 are designed for feeding of solution and recirculation. Further were used the names - solution-feeding pipe 26 and recirculating pipe 25.
  • the perforated inclined tubes can be 2 or 3, wherein at least one of them is a recirculating pipe 25 and at least another one is a solution-feeding pipe 26.
  • the recirculation circuit 12 is formed by the recirculation outlet 9 connected to the pump 10 to which outlet is connected a feeding pipeline llwhich has a drainage deviation 28 to a water preparation and wastewater treatment station 29. .
  • the feeding pipeline 11 through corresponding pneumatic (or electromagnetic) valves 30 and manual valves 31, shown with their technical indications in Figure 3, is connected to the recirculating pipe 25 alternatively - or directly through GV1, GV2, GV3 and GV9; or through valves with a technical designation GV1, GV2, GV3, GV5, GV6, GV7, GV8 through a heat exchanger 32 to maintain the temperature in the machine.
  • the heat exchanger 32 is connected to a power station 33. '
  • the cover lid 4 It is good on the cover lid 4 to be mounted a sensor (not shown) for "high level" in the washing chamber 1.
  • the sensor can be of any type offered, such as wave sensor.
  • an automatic control system is also included.
  • the machine works with external heating of the solutions. It is suitable for working with solutions having a hydrogen index pH from 3 to 12 and a temperature from 5°C to 90°C (atmospheric mode of operation). It is recommended that the treated materials have a size from 5mm to 40mm, which provides high-quality chemical treatment.
  • the parameters such as a ratio of material to solution; concentration of the solutions to be used for processing; required temperature of the solution; duration of the process are entered in the automatic control system data base.
  • the washing chamber 1 of the machine is fed the required quantity of water, and after 30 seconds the mechanical stirrer 17 is switched on and it starts simultaneous feeding of material through the supply opening 23 and a corresponding solution through the solution-feeding pipe 26.
  • Figure 3 shows an exemplary schematic diagram for machine operating mode.
  • the material stay in the machine washing chamber 1 and a chemical treatment cycle is executed with the intended first solution.
  • the solution ' is drained through the recirculation outlet 9, the pump 10 and the drainage deviation 28 of the feeding pipeline 11 to the water preparation and wastewater treatment station 29.
  • In draining mode are open GV1, GV2, GV4 and all other mechanized valves are closed.
  • the second solution which is usually different from the first one, ⁇ then is feeding while the material is Still in the washing chamber 1. In the same order, cleaning with different solutions is carried out in a corresponding number of cycles and the treated material does not leave the washing chamber 1.
  • washing chamber 1 is discharged by opening the pneumatically (or electrically) driven knife-valve 13, and the material is removed therefrom.
  • the discharging process is makes easier.
  • the recirculation circuit 12 is switched on via the heat .exchanger 32. In this mode are open: .
  • the machine according to .the invention makes it possible to carry out a multistage regime with a different duration of the individual treatments, and their total duration determines the hourly capacity of the machine.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

The inventions will find use in the chemical industry when it is necessary to wash polymers. The machine, comprising washing chamber (1), formed by a main body (2) comprising an upper cylindrical portion (3) with a cover lid (4) and a lower part (5) the small base (6) of which is located below. To the small base is mounted a cylindrical filter housing (7) with an upped flange (71) and a lower flange (72). Above the lower flange (72) a recirculation outlet (9) is located, which is connected to pump (10), followed by a feeding pipeline (11) of a recirculation circuit (12). To the lower flange of the filter housing is fitted a knife gate valve (13). Both the housing (2,7) are covered by a relevant wrapping heat-insulations (14, 15). In the washing chamber is located a mechanical stirrer (17), composed of opposing tubular elements (18), to which the inclined blades (19) are fixed. The tubular elements are fitted to a central tubular element (20) with an upper end connected to a motor-gear (21), and its with lower end, ending with two radial asymmetrically inclined blades (22). In the covering lid there is a supply opening (23) and a water inlet (24). To the cover lid are mounted at least two pipes (25, 26) with perforation (27) in length.

Description

MACHINE FOR CHEMICAL PROCESSING OF POT YMF, ft WASTE.
TECHNICAL FIELD
The machine is intended for use in the chemical industry for the processing of highly contaminated polymeric materials when it is necessary to wash polymers with a porous structure and especially when soaking and multistage chemical treatments is required.
BACKGROUND OF THE ART
Various machines are known in the in the field of polymers washing, each of which is intended for processing-washing of specific materials or for taking place of specific chemical processes. Furthermore, the known machines are mnning on an uninterrupted mode of operation, the washable material being continuously fed into a washing chamber is washed and comes out continuously from the machine after the washing process has been completed.
From the known state-of-the-art to the moment, there is no machine known for the chemical treatment of polymer waste to allows industrial’’“batch” - type of processing depending on the particular type of material to be treated.
SUMMARY OF THE INVENTION
The problem to be solved by the invention is to create a machine for chemical processing of polymer waste, which allows to carry out an industrial multistage process and its complete automation. The problem is solved by a machine for chemical processing of polymer waste, which includes washing chamber. According to the invention, the washing chamber is formed by a main body comprising an upper cylindrical portion with a cover lid and a lower part with a truncated cone shape, the small base of which is located below. To the small base is mounted a filter housing in which is inserted a filter grid. The filter housing is cylindrical with an upper and a lower flange, and its fitting to the small base of the main body is done by its upper flange with bolt connections. Directly above the lower flange of the filter hqusing is located recirculation oudet connected to a pump, followed by a feeding pipeline of a recirculation circuit; A knife gate valve is fitted to the lower flange of the filter housing. Both the housing - the main body and the filter housing - are covered by the relevant wrapping heat-insulations. Moreover, in the washing - chamber is located a mechanical stirrer made up of opposing tubular elements, to which are fixed inclined blades. The tubular elements have a shape corresponding to the inner shape of the main body and are fitted to a central tubular element. The upper end of the central tubular element is connected to a motor-gear, and its lower end, ending with two radial asymmetrically inclined blades, is located in the filter housing. In the cover lid there is a supply opening for the material processed as well as a water inlet. To the cover lid are mounted at least two pipes which are inclined to the central tubular element and are closed at their lower end and with an upper end located above the cover lid. The lower ends of the inclined pipes are located at a height up to the middle of the lower conical part of the main body and at a distance from one another of at least 1/3 of the diameter of washing chamber at the same level. The pipes have a perforation along the length, the perforation being on the part located in the washing chamber. At least one of the inclined pipes is recirculating and at least another one - solution-feeding.
The recirculation circuit is formed by the recirculation outlet· connected to the pump to which outlet is connected a feeding pipeline, which has a draining deviation to a water preparation and wastewater treatment station and through corresponding valves is connected to the recirculating pipe alternatively - directly and also through a heat exchanger.
It is preferable that the machine also has an automatic control system.
Mechanical stirrer, preferably should have a reverse mode of operation..
It is good to have a ."high level" sensor mounted in the washing chamber to the cover lid.
The advantages of the machine for chemital processing of polymer waste, according to the invention lies 'in the opportunity that several consecutive chemical treatments in the“batch” process mode could be carried out in the same machine, achieving the highest possible cleansing degree of the polymers, especially those with a porous structure. The machine allows complete automation of industrial processing, draining and replacement or refreshing of the used solutions during processing.
BRIEF DESCRIPTION OF THE FIGURES ·.
Figure 1 is a vertical sectional view of the machine according to the invention; · Figure 2 is a view of A-A of Figure 1;
Figure 3 is a schematic diagram of the machine in the operating mode.
EXAMPLES OF EMBODIMENTS OF THE INVENTION ' .
The machine for chemical processing of polymer waste includes a washing chamber 1. According to. the invention, washing chamber 1 is formed by a main body 2 comprising an upper cylindrical portion 3 with a cover lid 4 and a lower part 5 with a truncated cone shape, the small base 6 of which is located below. To the small base 6 is mounted a filter housing 7 in which a filter grid 8 is inserted, as shown in figure 1. In the example shown, the filter housing 7 is cylindrical with an upper flange 71 and a lower flange 72. The fitting of the filter housing 7 to the small base 6 of the main body 2 is done by the upper flange“72 with bolt connections. Directly above the lower flange 72 of the filter housing 7 is located a recirculation outlet.9 connected to pump 10 followed by a feeding pipeline 11 of a recirculation circuit 12. To the lower flange 72 of the filter housing.7 is. fitted a knife gate valve 13. It may be a. pneumatic one driven by a pneumatic cylinder or electrically operated. Figure 1 shows an example using a pneumatic knife gate valve. Both housings - main body one 2 and filter one 7 - are covered by a relevant wrapping heat-insulations 14, 15. To fix the machine in the designated place, fitting heels 16 are provided, welded to the main body 2, as shown in figure 2 und figure 3. The fitting heels 16 have the shape, selected by the experienced and accredited specialist in this field and is subject to custom design, and their configuration is not a subject of the invention and will therefore not be considered in detail in the present description. ·
In the washing chamber 1 is situated a mechanical stirrer 17, composed of opposite tubular elements 18; to which are fixed inclined blades 19. In the example shown, the blades have a slope of 45°, but depending on the particular application of the machine and the type of construction, another suitable slope can be selected. In some variants of embodiment and depending on the particular materials being processed the top blades are provided to have a inclination which is reversed compared to the others. The tubular elements 18 have a shape corresponding to the inner shape of the main body 2.and are mounted to central tubular element 20, the upper end of which is connected to a motor-gear 21 for driving the mechanical stirrer 17. The preferred option is the mechanical stirrer 17 to · operate with reversing mode one. Preferably, the rotation speed of its movement is in the range of 2-4 revolutions per minute. The central tubular element 20 has -.a lower end located in the filter housing 7 and ends with two radial asymmetrically inclined blades 22. · ·
In the cover lid 4 of the main body 2 is formed a supply opening 23 for the material processed, as well as a water inlet 24. To the cover lid 4 are mounted at least two inclined relative to the central tubular element 20, tubes 25, 26 with an upper end located above the coyer lid 4. The inclined tubes 25, 26 are closed at their lower ends. Their inclination relative to the central tubular member 20 is 15°, as it is provided in the embodiment, shown in Figure 1. The lower ends of the inclined pipes 25, 26 are located at a height up to the middle of the lower conical part 5 of the main body 2 and at a distance from one another of at least 1/3 of the diameter D of the washing chamber 1 at the same level - middle . of the lower conical part 5. In the specific example, this distance is about 645-655 mm. Tubes 25, 26 have a perforation 27 along the length, the perforation 27 being located in the washing chamber 1. The inclined pipes 25, 26 are designed for feeding of solution and recirculation. Further were used the names - solution-feeding pipe 26 and recirculating pipe 25. Depending on the specific implementation, the perforated inclined tubes can be 2 or 3, wherein at least one of them is a recirculating pipe 25 and at least another one is a solution-feeding pipe 26.
The recirculation circuit 12 is formed by the recirculation outlet 9 connected to the pump 10 to which outlet is connected a feeding pipeline llwhich has a drainage deviation 28 to a water preparation and wastewater treatment station 29.. Further, the feeding pipeline 11, through corresponding pneumatic (or electromagnetic) valves 30 and manual valves 31, shown with their technical indications in Figure 3, is connected to the recirculating pipe 25 alternatively - or directly through GV1, GV2, GV3 and GV9; or through valves with a technical designation GV1, GV2, GV3, GV5, GV6, GV7, GV8 through a heat exchanger 32 to maintain the temperature in the machine. The heat exchanger 32 is connected to a power station 33. '
It is good on the cover lid 4 to be mounted a sensor (not shown) for "high level" in the washing chamber 1. The sensor can be of any type offered, such as wave sensor. As a preferred embodiment, an automatic control system is also included. APPLICATION OF THE INVENTION
The machine works with external heating of the solutions. It is suitable for working with solutions having a hydrogen index pH from 3 to 12 and a temperature from 5°C to 90°C (atmospheric mode of operation). It is recommended that the treated materials have a size from 5mm to 40mm, which provides high-quality chemical treatment.
Typically, the parameters such as a ratio of material to solution; concentration of the solutions to be used for processing; required temperature of the solution; duration of the process are entered in the automatic control system data base.
In the washing chamber 1 of the machine is fed the required quantity of water, and after 30 seconds the mechanical stirrer 17 is switched on and it starts simultaneous feeding of material through the supply opening 23 and a corresponding solution through the solution-feeding pipe 26. Typically, the filling of the washing chamber
1 with material and solution lasts up to 5 minutes. The quantity of material, water one and the solution one fed in ttie chamber are controlled outside the machine.
8
Figure 3 shows an exemplary schematic diagram for machine operating mode.
The material stay in the machine washing chamber 1 and a chemical treatment cycle is executed with the intended first solution. After the required time has elapsed the solution' is drained through the recirculation outlet 9, the pump 10 and the drainage deviation 28 of the feeding pipeline 11 to the water preparation and wastewater treatment station 29. In draining mode are open GV1, GV2, GV4 and all other mechanized valves are closed. The second solution, which is usually different from the first one,· then is feeding while the material is Still in the washing chamber 1. In the same order, cleaning with different solutions is carried out in a corresponding number of cycles and the treated material does not leave the washing chamber 1. After the last treatment cycle, the solution is drained and washing chamber 1 is discharged by opening the pneumatically (or electrically) driven knife-valve 13, and the material is removed therefrom. By reversing the direction of rotation of the mechanical stirrer 17, the discharging process is makes easier.
Next, the machine for chemical processing of polymeric waste is charged with a new portion of material to be processed in the order as described above.
When it is necessary to heat the material and solutions contained in the washing chamber 1, the recirculation circuit 12 is switched on via the heat .exchanger 32. In this mode are open: .
- shut-off valves GV1, GV2, GV3, GV5, GV6, GV7, GV8, GVlO, GV11, CV2 and GV12;
- by the CV 1 valve is adjusted the .operating mode of the pump.
- GV4 and GV9 are closed.
The machine according to .the invention makes it possible to carry out a multistage regime with a different duration of the individual treatments, and their total duration determines the hourly capacity of the machine.

Claims

1. Machine for chemical processing of polymer waste, comprising washing chamber characterized by that, the washing chamber (1) is formed by a main body (2) comprising an upper cylindrical portion (3) with a cover lid (4) and a lower part (5) with a truncated cone shape, the small base (6.) of which is located below, and to the small base (6) is mounted a filter housing (7) in which ig inserted a filter grid (8), the filter housing (7) is cylindrical with an upper flange (71) and a lower flange (72), and its fitting to the small base (6) of the main body (2) is done by the upper flange (71) by bolt connections, whereby directly above the lower flange (72) of the filter housing (7) a recirculation outlet (9) is located, which is connected to pump (10), followed by a feeding pipeline (11) of a recirculation circuit (12), and to the lower flange (72) of the filter housing (7) is fitted a knife gate valve (13), wherein both the housing - the main body (2) and the filter housing (7) are covered by a relevant wrapping heat-insulations (14, 15), while in the washing chamber (1) is located a mechanical stirrer (17), composed of opposing tubular elements (18), to which the inclined blades (19) are fixed, and the tubular elements (18) have a shape corresponding to the inner shape of the main body (2) and are fitted to a central tubular element (20) with an upper end connected to a motor-gear
(21), and its lower end, ending with two radial asymmetrically inclined blades
(22), is located in the filter housing (7), wherein in the covering lid (4) there is a supply opening (23) for the material processed and a water inlet (24), and to the cover lid (4) at least two pipes (25, 26) inclined to the central tubular element (20) are mounted and are closed at their lower end and they have an upper end located above the cover lid (4), the lower ends of at least two inclined pipes (25, 26) are located at a height up to the middle of the lower conical part (5) of the main body (2) and at a distance from one another, at least 1/3 of the diameter of the washing chamber (1) in the game level and the inclined pipes (25, 26) have a perforation (27) in length, as the perforation (27) being located in the washing chamber- (1), wherein at least one of the inclined pipes (25, 26) is recirculating pipe (25), and at least another one is solution-feeding pipe (26).
2. Machine according to claim 1, characterized by that the recirculation circuit (12) is formed by the recirculation outlet (9) connected to the pump ,(10), to which outlet is connected a feeding pipeline (11), which has a drainage deviation (28) to the water preparation and wastewater treatment station (29) and through corresponding valves is connected to the recirculating pipe (25) alternatively - directly and through a heat exchanger (32).
3. Machine according to claim 2, characterized by that, an automatic control system is also included.
4. Machine according to claims 2 or 3, characterized by that; the mechanical stirrer (17) has a reverse operating mode.
5. Machine according to claim 4, characterized by that, a "high level" sensor is mounted in the washing chamber (1) to the cover lid (4).
PCT/BG2019/000009 2018-11-01 2019-05-07 Machine for chemical processing of polymer waste WO2020087137A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG112826A BG112826A (en) 2018-11-01 2018-11-01 Machine for chemical treatment of polymeric wastes
BG112826 2018-11-01

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WO2020087137A1 true WO2020087137A1 (en) 2020-05-07

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BG (1) BG112826A (en)
WO (1) WO2020087137A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112038270A (en) * 2020-11-02 2020-12-04 宁波丞达精机股份有限公司 Wafer processing device and processing method

Citations (3)

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Publication number Priority date Publication date Assignee Title
WO2000076681A1 (en) * 1999-06-16 2000-12-21 Amut S.P.A. Plant for washing plastic material
JP2003010796A (en) * 2001-06-28 2003-01-14 Nichiraku Kikai Kk Apparatus for crushing and washing recycling container
US20050067325A1 (en) * 2000-09-19 2005-03-31 Fuji Photo Film Co., Ltd. Method for recycling used-up plastic products and washing process of crushed plastic and apparatus therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000076681A1 (en) * 1999-06-16 2000-12-21 Amut S.P.A. Plant for washing plastic material
US20050067325A1 (en) * 2000-09-19 2005-03-31 Fuji Photo Film Co., Ltd. Method for recycling used-up plastic products and washing process of crushed plastic and apparatus therefor
JP2003010796A (en) * 2001-06-28 2003-01-14 Nichiraku Kikai Kk Apparatus for crushing and washing recycling container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112038270A (en) * 2020-11-02 2020-12-04 宁波丞达精机股份有限公司 Wafer processing device and processing method
CN112038270B (en) * 2020-11-02 2021-01-19 宁波丞达精机股份有限公司 Wafer processing device and processing method

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