AU2019253904A1 - Systems and washing modules for washing recyclable particles - Google Patents

Abstract

MD3 IR\-\ I A system for washing recyclable particles is disclosed, the system comprising a first washing module. The first washing module comprises a hollow body defining an entry at a first end of the hollow body to receive the recyclable particles, and an exit enabling the recyclable particles to leave the hollow body. The exit is at a second end of the hollow body opposite the first end. The first washing module also comprises: a plurality of liquid inlets configured to receive and spray pressurised liquid into the hollow body to wash recyclable particles within the hollow body; and an auger at least partially located within the hollow body extending between the first end and second end. The auger is configured to rotate to transport the recyclable particles from the entry to the exit. The first washing module further comprises: a motor connected to the auger and configured to rotate the auger; and a chute adapted to connect to the exit of the first washing module and receive washed recyclable particles. Figure 1

Description

Systems and washing modules for washing recyclable particles

Technical Field [0001] The present disclosure generally relates to systems and modules for washing particles. More specifically, the present disclosure relates to systems and modules for washing recyclable particles.

Background [0002] Recycling reduces waste in landfills and/or assists in preserving valuable resources. Examples of recyclable materials commonly used in society include: metals, such as aluminium and steel; silica based glasses, polymers (or plastics) such as polyethylene terephthalate (PET), low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP); and cellulose based products such as paper and cardboard.

[0003] As part of the recycling process, materials may be reduced in size by a sizereduction module such as a granulator to form smaller constituents, particles and/or particulates. This may involve processes such as pulverizing, grinding, shredding, chopping or cutting.

[0004] Additionally, the recyclable materials are typically washed one or more times before further processing to remove or reduce contaminants such as residue from other materials which may have come into contact with the recyclable material during its previous use. For example, the recyclable material may have been used for storage of food or drink and residue from the food or drink may still be present on the recyclable material. Removing or reducing contaminants improves the quality of the final product produced from the recyclable material.

[0005] Existing recycling systems may use a mechanical washing machine such as a friction washer to physically separate contaminants from the recyclable materials.

2019253904 25 Oct 2019

These mechanical washing machines use multiple motors with rotors to physically agitate the recyclable materials. Existing recycling plants may use multiple mechanical washing machines to wash recyclables in several stages.

[0006] It would be desirable to address or ameliorate problems or shortcomings with existing washing systems and/or washing apparatuses.

[0007] Any discussion of documents, acts, materials, devices, articles or the like which has been included in the present specification is not to be taken as an admission that any or all of these matters form part of the prior art base or were common general knowledge in the field relevant to the present disclosure as it existed before the priority date of each of the appended claims.

Summary [0008] Some embodiments relate to a system for washing recyclable particles comprising:

a first washing module comprising:

a hollow body defining an entry at a first end of the hollow body to receive the recyclable particles, and an exit enabling the recyclable particles to leave the hollow body, the exit at a second end of the hollow body opposite the first end;

a plurality of liquid inlets configured to receive and spray pressurised liquid into the hollow body to wash recyclable particles within the hollow body;

an auger at least partially located within the hollow body extending between the first end and second end, wherein the auger is configured to rotate to transport the recyclable particles from the entry to the exit;

a motor connected to the auger and configured to rotate the auger; and

2019253904 25 Oct 2019 a chute adapted to connect to the exit of the first washing module and receive washed recyclable particles.

[0009] The hollow body may define closed ends at the first and second end. The hollow body may comprise an outer wall with an inner surface that defines a tubular tunnel and the auger is configured to be at least partially located within the tubular tunnel.

[0010] The auger may comprise a helical screw blade and has a first pitch at a first section of the auger that is different to a second pitch at a second section of the auger. In some embodiments, the auger comprises a helical screw blade and has a first pitch near the first end of the hollow body that is larger than a second pitch of the auger near the second end of the hollow body. The first pitch may be in the range of about 250 mm to about 500 mm. The second pitch may be in the range of about 50 mm to about 249 mm. The auger may have an outer blade diameter in the range of 200 mm to 2000 mm.

[0011] The auger may comprise helical screw blades with a thickness in the range of about 3 mm to about 20 mm. The helical screw blades may have a flight depth in the range of about 20 mm to about 250 mm.

[0012] In some embodiments, the auger comprises a central shaft that has any one of: a square, circular rectangular, and elliptical transverse cross-section along parts of the central shaft that are within the hollow body.

[0013] In some embodiments, the hollow body has a length in the range of 2000 mm to 3000 mm. The hollow body may have a length greater than a width of the hollow body.

[0014] The motor and auger may be configured such that the auger is rotatable at a rate up to about 300 rpm. The motor and auger may be configured such that the auger is rotatable at a rate in the range of about 30 rpm to about 300 rpm.

2019253904 25 Oct 2019 [0015] The plurality of liquid inlets may be arranged along a length of the hollow body. In some embodiments, the plurality of liquid inlets are arranged along one or more columns along a length of the hollow body.

[0016] The chute may comprise a base that is curved along at least part of its length. In some embodiments, the chute comprises a plurality of apertures sized to enable liquid to pass through the apertures while enabling the recyclable particles to travel along the chute.

[0017] In some embodiments, the system further comprises a liquid receptacle located below the chute to receive liquid that has passed through the apertures and provide the received liquid to the plurality of liquid inlets. The pump may be fluidly connected to the liquid receptacle.

[0018] The hollow body may define a second exit at the first end to enable liquid to drain out of the hollow body. In some embodiments, the second exit comprises a drainage grate.

[0019] The system may further comprise a funnel located below at least one of the hollow body and the chute to collect liquid.

[0020] In some embodiments, the system further comprises a pump adapted to supply the pressurised liquid to the liquid inlets, wherein the pump is fluidly connected to the liquid inlets via a fluid conduit.

[0021] The system may further comprise a filter component connected to the pump intermediate the pump and a fluid supply to filter fluid provided to the pump.

[0022] The hollow body of the first washing module may be oriented at an angle relative to the ground. The angle may be greater than 30 degrees, for example. For example, the hollow body of the first washing module may be upstanding (i.e. around 90 degrees).

2019253904 25 Oct 2019 [0023] In some embodiments, the system further comprises a drying module configured to receive recyclable particles via the chute of the first washing module and to dry the received washed recyclable particles.

[0024] In some embodiments, the system further comprises a second washing module, wherein the second washing module comprises: a second hollow body defining an entry at a first end of the second hollow body to receive the recyclable particles, and an exit enabling the recyclable particles to leave the second hollow body, the exit at a second end of the second hollow body opposite the first end; a second plurality of liquid inlets configured to receive and spray pressurised liquid into the second hollow body to wash recyclable particles within the second hollow body; and a second auger at least partially located within the second hollow body extending between the first end and second end, wherein the second auger is configured to rotate to transport the recyclable particles from the entry to the exit; wherein a second entry of the second washing module is positioned to receive washed recyclable particles from the chute of the first washing module.

[0025] The hollow body of the first and/or second washing module may be positioned such that the first end is lower than the second end and the entry is lower than the exit.

[0026] The hollow body of the second washing module may be oriented at an angle relative to the ground. The hollow body of the second washing module may be upstanding.

[0027] In some embodiments, the system further comprises a drying module configured to receive recyclable particles via the chute of the second washing module and to dry the received washed recyclable particles.

[0028] In some embodiments, the system further comprises a packaging module configured to receive dried recyclable particles from the drying module and transport the dried recyclable particles into a storage container or bag.

2019253904 25 Oct 2019 [0029] The system may occupy a floor area of less than about 50 m2.

[0030] The motor may have a maximum power capacity in the range of about 0.75 to about 75 kW.

[0031] The system may be configured to wash recyclable particles with a smallest dimension greater than about 0.5 mm.

[0032] The system may be configured to wash recyclable particles with a smallest dimension greater than about 5 mm.

[0033] The system may be configured to wash recyclable particles with a largest dimension less than about 250 mm.

[0034] The system may be configured to wash recyclable particles with a largest dimension less than about 25 mm.

[0035] The washing module may comprise a valve and a set of the plurality of liquid inlets may be coupled to the valve.

[0036] The washing module may comprise a plurality of valves and at least two sets of the plurality of liquid inlets are coupled to the valves.

[0037] The washing module may further comprise a manifold attached to the plurality of liquid inlets and adapted to distribute pressurised liquid to the plurality of liquid inlets.

[0038] The washing module may further comprise a manifold attached to the plurality of liquid inlets and adapted to distribute pressurised water to the plurality of liquid inlets.

[0039] In some embodiments, the system further comprises a size reduction module configured to generate the particles from material of a larger size.

2019253904 25 Oct 2019 [0040] Some embodiments relate to a washing module comprising:

a hollow body defining an entry at a first end of the hollow body to receive the recyclable particles, and an exit enabling the recyclable particles to leave the hollow body, the exit at a second end of the hollow body opposite the first end;

a plurality of liquid inlets configured to receive and spray pressurised liquid into the hollow body to wash recyclable particles within the hollow body; and an auger at least partially located within the hollow body extending between the first end and second end, wherein the auger is configured to transport the recyclable particles from the entry to the exit.

[0041] The washing module may further comprise a manifold attached to the plurality of liquid inlets and adapted to distribute pressurised liquid from a pressurised liquid source to the plurality of liquid inlets.

[0042] Throughout this specification the word comprise, or variations such as comprises or comprising, will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.

Brief Description of Drawings [0043] Embodiments are described in further detail below, by way of example, with reference to the accompanying drawings briefly described below. Like reference numerals refer to like features.

[0044] Figure 1 is a rendered isometric view of a washing module for recyclable particles according to some embodiments;

[0045] Figure 2 is a right side view of a washing system including the washing module of Fig. 1;

2019253904 25 Oct 2019 [0046] Figure 3 a is a front view of the washing module of Fig. 1;

[0047] Figure 3b is a front view of the washing module of Fig. 1 showing internal structures;

[0048] Figure 4 is a cross-sectional view of the washing module of Fig. 3a along line B-B;

[0049] Figure 5 is a partial cross-sectional top view of the washing module of Fig. 3a along line C-C;

[0050] Figure 6a is a right side view of a washing system according to some embodiments;

[0051] Figure 6b is a back view of the washing system of Fig. 6a;

[0052] Figure 6c is a top view of the washing system of Fig. 6a;

[0053] Figure 7a is a rendered isometric view of a washing system for recyclable particles according to some embodiments;

[0054] Figure 7b is a top view of the washing system of Fig. 7a;

[0055] Figure 7c is a left side view of a washing system of Fig. 7a;

[0056] Figure 7d is a front view of the washing system of Fig. 7a;

[0057] Figure 7e is a right side view of a washing system of Fig. 7a;

[0058] Figure 8 is a block diagram of a washing system according to some embodiments;

2019253904 25 Oct 2019 [0059] Figure 9 is an image of a liquid inlet of a washing module according to some embodiments; and [0060] Figure 10 is an image of a fluid conduit and a nozzle adapted to be fluidly coupled to the liquid inlet of Fig. 9 to some embodiments.

Description of Embodiments [0061] The present disclosure generally relates to systems and modules for washing particles. More specifically, the present disclosure relates to systems and modules for washing recyclable particles. Particles may be referenced herein generally as particulate and such terms are intended to be used interchangeably.

[0062] Particles which may be formed from recyclable materials may be processed to reduce their size and produce smaller particles to be washed. The recyclable particles may comprise one or more types of recyclable materials or may have been previously sorted into one type of recyclable material.

[0063] The disclosed systems and/or apparatuses may have reduced power requirements and/or reduced footprints.

[0064] Referring to Figures 1 to 5, a washing system 100 for recyclable particles (particulates) is shown. The washing system 100 comprises a washing module 101 and a pump 222. The washing module 101 comprises a motor 120 and a hollow body 110. The hollow body 110 defining an entry 312 at a first end 113 of the hollow body 110 to receive recyclable particles (see Figs. 3a and 4). The hollow body 110 also defines an exit (first exit) 414 at a second end 115 of the hollow body 110 enabling the recyclable particles to leave the hollow body 110 (see Fig. 4). The second end 115 is at an opposing end of the hollow body 110 to the first end 113. The washing module 101 further comprises a plurality of liquid inlets 130 configured to receive and spray pressurised liquid into the hollow body 110 to wash recyclable particles within the hollow body 110. The washing module 101 further comprises an auger 440 (see Fig. 4)

2019253904 25 Oct 2019 ίο at least partially located within the hollow body 110 and extending between the first end 113 and second end 115. The motor 120 is connected to the auger 440 and is configured to rotate the auger 440. The auger 440 is configured to transport the recyclable particles (not shown) from the entry 312 to the exit 414 when rotated by the motor 120.

[0065] The use of pressurised liquid to wash the recyclable particles may also advantageously agitate the recyclable particles to assist in the washing process.

[0066] The hollow body 110 may comprise an outer wall 111. The outer wall 111 may define the entry 312 and the first exit 414. The outer wall 111 of the hollow body 110 may comprise an inner surface 418 that defines a tubular tunnel that the auger 440 is at least partially located within. The outer wall 111 (and therefore the hollow body 110) may be extended along a longitudinal central axis B-B with a length L. The length L is greater than a diameter (width) D of the hollow body 110 (See Fig. 3b and 4).

[0067] The first exit 414 may be located at a radial position on the circumference of the hollow body 110 that is opposite to the entry 312 and located above the entry 312. However, the first exit 414 may be located at other radial positions with respect to the entry 312.

[0068] The hollow body 110 may have a diameter D in the range of about 200 mm to about 2100 mm, for example. The length L of the hollow body 110 may be in the range of 2100 mm to 3000 mm, for example.

[0069] In some embodiments, it is also envisaged that the hollow body 110 (and/or inner surface 418) has a cross-section transverse to the longitudinal axis B-B that is circular, elliptical, hexagonal or a polygon with more than 5 sides in shape.

[0070] The first end 113 and the second end 115 of the hollow body 110 may be closed ends. The hollow body 110 may therefore define a washing chamber. Either one or both of the ends 113, 115 of the hollow body 110 may be closed off (or sealed) at a

2019253904 25 Oct 2019 far end by attaching a plate 117. The plate 117 may be removably attached by a plurality of fasteners such as bolts to enable access to the interior of the hollow body 110. In some embodiments, either one or both the ends 113, 115 of the hollow body 110 may be fixably sealed with a plate 419 to the outer wall 111 by welding or integrally forming the far end. In some embodiments, the first end 113 is fixably sealed with a plate 419 and the second end 115 is removably sealed with plate 117.

[0071] In some embodiments, the outer wall 111 of the hollow body 110 further defines another liquid exit (second exit) 116 that is located at or near the first end 113 to enable liquid to drain out of the hollow body 110. The liquid exit may, for example, comprises a drainage grate (not shown).

[0072] The hollow body 110 may be oriented such that the first end 113 is lower than the second end 115 and the entry 312 is therefore lower than the first exit 414 (see Fig. 4). The auger 440 is therefore operable to generally transport recyclable particles upwards. In some embodiments, the hollow body 110 may be oriented at an angle (not shown) relative to the ground, in other words, the hollow body 110 may be diagonal to the ground. In some embodiments, the hollow body 110 is horizontal or near horizontal.

[0073] The hollow body 110 may be vertically oriented (or upstanding) during normal use/operation. The auger 440 may therefore also be vertically oriented (or upstanding). By orienting the hollow body 110 vertically or at a large angle relative to the ground, the washing module advantageously takes up less floor space and has a smaller footprint. In some embodiments, the washing system 100 may be sized to fit within a standard 40-foot shipping container (about 12 m x about 2.3 m x about 2.4 m). As described below, the washing system 100 may include a plurality of components and/or modules such as: entry conveyors, granulator/size-reduction module, chutes between modules, two washing modules 101, a rinse module, a drying module and a control panel. The size of the washing system 100 is further discussed below.

2019253904 25 Oct 2019 [0074] The washing module 101 may further comprise an inlet chute 180 connected at one end to the outer wall 111 at the entry 312 to assist in receiving recyclable particles into the hollow body 110. The inlet chute 180 may also enable the washing module 101 to be connected to other processing modules in the washing system 100. For example, the washing module 101 may be connected to a pulverizing and/or grinding module or another washing module.

[0075] Referring to Figure 4, the auger 440 may comprise a helical screw blade 441. The auger 440 may also comprise a central shaft 442. The central shaft 442 may have a square, circular, rectangular or elliptical transverse cross-section.

[0076] The auger 440 may have a first section with a first pitch Pl and a second section with a second pitch P2 that is different from the first pitch Pl. The auger 440 may have a third section with a third pitch P3 that is different from the first pitch Pl and the second pitch P2. The third section may be intermediate the first section and the second section, for example. In preferred embodiments, Pl is greater than P2. For embodiments in which the third section is present, P2 is greater than P3 (i.e. Pl > P2 > P3). A pitch P2 near the second end 115 that is larger than the pitch P3 near the centre of the auger 440 may enable a faster discharge of washed recyclable particles from the hollow body 110.

[0077] The auger 440 may have a varying pitch that decreases from a first pitch Pl near a first auger end 443 to a second pitch P2 near a second auger end 444. The pitch may progressively vary from the first auger end 443 to the second auger end 444 (i.e. Pl > P3 > P2). The auger 440 may be oriented such that the first auger end 443 is located adjacent or near the first end 113 of the hollow body 110 and the second auger end 444 is located adjacent or near the second end 115 of the hollow body 110.

[0078] The first pitch Pl may be in the range of about 220 mm to about 500 mm. The second pitch P2 may be in the range of about 50 mm to about 219 mm and is less than the first pitch Pl. For example, the first pitch Pl may be about 250 mm and the second pitch P2 may be about 200 mm. By providing an auger 440 with a varying pitch, the

2019253904 25 Oct 2019 speed at which the received recyclable particles are transported through the hollow body 110 by the auger may vary over the length of the auger 440. This may thereby increase the amount of time the recyclable particles spend in certain sections of the hollow body 110, when compared to a constant pitch auger. The increased time in the hollow body 110 enables a more efficient washing of the recyclable particles.

[0079] Furthermore, the larger first pitch Pl also provides a larger initial space: for the liquid to wash the recyclable particles, to receive a greater volume of particles, and/or to quickly move the material away from the entry 312 at the first end 113.

[0080] In some embodiments, the first pitch Pl may be in the range of about 220 mm to about 320 mm and the second pitch P2 may be in the range of about 120 mm to about 219 mm and is less than the first pitch Pl.

[0081] In some embodiments, the first pitch Pl may be in the range of about 401 mm to about 500 mm and the second pitch P2 may be in the range of about 300 mm to about 400 mm and is less than the first pitch Pl.

[0082] In some embodiments, the first pitch Pl may be in the range of about 150 mm to about 250 mm and the second pitch P2 may be in the range of about 50 mm to about 149 mm and is less than the first pitch Pl.

[0083] By varying or carefully selecting the design and/or operation of the auger 440, the resident time that recyclable particles spend within the hollow body 110 to be washed can be controlled. For example, the pitch, flight depth (described further below) and/or rotational speed of the auger 440 may be selected to provide a desired resident time for washing. This may reduce the overall length of the washing module 101 required to effectively wash recyclable particles as conventional washing machines may otherwise only improve the washing process by lengthening the washing machine to increase the washing time.

[0084] In some embodiments, the auger 440 has a consistent pitch along its length.

2019253904 25 Oct 2019 [0085] The auger 440 may comprise a helical screw blade 441 that has a first thread over a majority of its length L and a second thread near the second auger end 444 where the first thread and the second thread are opposite (reversed) to each other. For example, the helical screw blade 441 may have a right handed thread in (an upward direction) near the first auger end 443 and the majority of the length of the auger 440. However, the helical screw blade 441 may also have a left handed thread (in the upward direction) for the last flight (blade section) near the second end 444 at the top of the auger 440. The opposite (or reversed) thread at the top of the auger 440 facilitates diverting or directing the recyclable particles out of the hollow body 110 via the first exit 414 [0086] The auger 440 may have an outer blade diameter that is about 200 mm to about 2000 mm. The clearance between an outer edge of the helical screw blade 441 and the inner surface 418 of the hollow body 110 may be in the range of about 2 mm to about 20 mm to enable the auger 440 to fit into and rotate within the hollow body 110. The clearance may also depend on the size of particles that the washing system 100 is designed to wash. For example, if the washing system 100 is designed to wash particles as small as 5 mm, the clearance may be about 2 mm.

[0087] In some embodiments, the washing module 110 may be configured to wash recyclable particles (collectively described as particulate) that have a smallest dimension that is larger than about 0.5 mm. In some embodiments, the washing module 110 is configured to wash particles with a largest dimension that is less than 250 mm. The recyclable particles may have a largest dimension that is less than about 25 mm. In some embodiments, the washing module 110 is configured to wash particles with a largest dimension that is less than 100 mm. The recyclable particles may be cut (e.g. by a shredding apparatus) from a sheet material and may have a thickness of less than about 2 mm. The recyclable particles may have a thickness of less than about 1 mm. The particles may be elongate in shape or may have a generally square, diamond or other polygonal shape. The particles may also be described as sheet pieces, strips or flakes. The material of the recyclable particulate may be or comprise plastic materials,

2019253904 25 Oct 2019 such as polyethylene, for example. Such materials may include HDPE, MDPE and/or LDPE, for example.

[0088] The helical screw blades 441 may have a consistent radius along the length of the auger 440.

[0089] In some embodiments, the length of the auger 440 (measured from the endmost blade sections) may be about the same as or less than the length L of the hollow body 110.

[0090] The helical screw blades 441 may have a thickness in the range of about 3 mm to about 20 mm. In some embodiments, the helical screw blade 441 has a thickness in the range of about 5 mm to about 15 mm. In some embodiments, the helical screw blade 441 has a thickness in the range of about 3 mm to about 10 mm. In some embodiments, the helical screw blade 441 has a thickness in the range of about 10 mm to about 20 mm. For example, the thickness may be about 5 mm.

[0091] The helical screw blade 441 may have a flight depth (channel depth) F measured from the outer surface of the central shaft 442 and the outer edge of the screw blade 441. The helical screw blade 441 may have a flight depth F in the range of about 20 mm to about 250 mm. In some embodiments, the helical screw blade 441 has a flight depth F in the range of about 50 mm to about 200 mm. In some embodiments, the helical screw blade 441 has a flight depth (channel depth) F in the range of about 100 mm to about 150 mm. In some embodiments, the helical screw blade 441 has a flight depth (channel depth) F in the range of about 20 mm to about 120 mm. In some embodiments, the helical screw blade 441 has a flight depth (channel depth) F in the range of about 120 mm to about 250 mm.

[0092] The washing module 101 is designed to wash recyclable particles with a largest dimension smaller than the smallest pitch P2 and/or flight depth F.

2019253904 25 Oct 2019 [0093] In some embodiments, the helical screw blade 441 may define notches or recesses around or near the outer perimeter of the helical screw blade 441 (notched flights, or notched blades). This may assist in agitation of the recyclable particles to improve washing of the recyclable particles.

[0094] The plurality of liquid inlets 130 may be arranged along the length of the hollow body 110. In some embodiments, the plurality of liquid inlets 130 are arranged along one or more columns (straight lines) along the length of the hollow body 110. Each of the liquid inlets 130 may be positioned to be located between adjacent turns (flights or blade sections) of the helical screw blade 441 (best seen in Fig. 3b). This enables the liquid inlets 130 to spray pressurised liquid onto the recyclable particles to agitate and/or wash the recyclable particles as they are transported through the hollow body 110 by the auger 440.

[0095] In some embodiments, the liquid inlets 130 may be arranged at different positions around the circumference of the hollow body 110. For example, the liquid inlets 130 may be arranged along two or more columns in a zig-zag pattern.

[0096] The plurality of liquid inlets 130 may each comprise a nozzle 333 adapted to disperse the pressurised liquid within the hollow body 110. In some embodiments, the nozzle 333 may be configured to produce a conical spray that may enables larger volume between adjacent blade sections of the helical screw blade 441 to be sprayed with the liquid compared to if no nozzle 333 were present.

[0097] Referring to Figures 9 and 10, each liquid inlet 130, 730 may define an opening 931 into the hollow body 110. Each liquid inlet 130, 730 may comprise a generally tubular body 932 and a flanged end 934. The liquid inlet 130, 730 may further comprise a fastener to attach a fluid conduit 735 to the flanged end 934 and fluidly couple the fluid conduit 735 to the opening 931. The flanged end 934 may, for example comprise a threaded outer rim 935 to enable a nut 1036 to removably attach the fluid conduit 735 to the flanged end 934.

2019253904 25 Oct 2019 [0098] The nozzle 333 may be configured to be located within the opening 931. The outlet end of the nozzle 333 may be located near the inner surface 418 of the hollow body 110. The nozzle 333 may be attached to an end of the fluid conduit 735.

[0099] In some embodiments, liquid inlets 130 may alternatively be or comprise auxiliary fluid inlets adapted to receive compressed air or high pressure steam vapour to be sprayed into the hollow body 110. Washing with high pressure steam provided by a boiler may lead to a lower energy cost compared to washing with high pressure liquids. Use of high pressure steam may also allow higher pressures to be used and lead to better washing efficacy (e.g. better separation of contaminants from particles).

[0100] In some embodiments, one or more auxiliary liquid inlets 232 are provided at or near the second end 115 of the hollow body 110 and opposite the exit 414 to enable pressurised wash liquid to be sprayed into the hollow body 110 and assist in diverting or directing the recyclable particles out of the hollow body 110 via exit 414.

[0101] In some embodiments, liquid inlets 130 and/or the one or more auxiliary liquid inlets 232 may alternatively be or comprise auxiliary fluid inlets adapted to receive compressed air or high pressure steam vapour to be sprayed into the hollow body 110 and assist in diverting the recyclable particles out of the hollow body 110 via exit 414. For such embodiments, system 100 further comprises a source of compressed air and/or pressurised steam fluidly coupled to the liquid inlets 130 and/or auxiliary liquid inlets 232.

[0102] Each of the inlets 130 and/or auxiliary inlets 232 may be configured to receive liquid at a pressure in the range of about 2 bar to about 6 bar. In some embodiments, the liquid may be at a pressure in the range of about 3 bar to about 5 bar. The flow rate of pressurised liquid may be in the range of about 6 to about 11 litres/min. In some embodiments, the flow rate of pressurised liquid may be in the range of about 7 to 10 litres/min. In some embodiments, the flow rate of pressurised liquid may be in the range of about 7.5 to 9.25 litres/min.

2019253904 25 Oct 2019 [0103] In some embodiments, a set of the plurality of liquid inlets 130 is coupled to a valve 733 such as a mechanical valve (e.g. gate valve or ball valve) or a solenoid valve. The valves 733 may, for example, be located in-line on fluid conduit 223, 735 (see Fig. 10). In some embodiments, each liquid inlet 130 of the set of liquid inlets 130 is coupled to a different valve 733. In some embodiments, two or more sets of liquid inlets 130 are each coupled to a different valve 733, for example, a first set of liquid inlets 130 may be coupled to a first valve 733 and a second set of liquid inlets 130 may be coupled to a second valve 733. Coupling the liquid inlets 130 to one or more valves 733 enables the set(s) of liquid inlets 130 to be selectively opened and closed. For example, with 16 liquid inlets 130 open, a flow rate of about 7.5 litres/min at a pressure of about 3 bar may be achieved. However, by closing 8 of the inlets 130, a flow rate of about 9.25 litres/min at a pressure of about 5 bar may be achieved.

[0104] In some embodiments, one or more inlets 130 may be blocked or closed off from receiving liquid or fluid by attachment of a closure (blank end piece).

[0105] The washing system 100, and in particular the liquid inlets 130, 232, auger 440 and hollow body 110, may be formed from a material and/or otherwise configured to be exposed to wash liquids such as water, soapy water, aqueous caustic soda, and kerosene. The pressurised wash liquid may therefore comprise any one or more of: water, detergent, de-foaming agents, caustic soda, and kerosene. For example, components of the washing system 100 may be formed from carbon steel or stainless steel. The inner surfaces of the washing system 100 exposed to the liquids and recyclable particles may comprise a wear resistant coating such as hardox.

[0106] The pressurised wash liquid may also be warm or hot water. In some embodiments, the washing system 100 may therefore comprise a heater or hot-wash module (not shown) for heating the wash liquid.

[0107] The motor 120 may be configured to rotate the auger 440 at rotational speeds of up to about 300 revolutions per minute (rpm). The motor 120 may be configured to rotate the auger 440 with a rotational speed in the range of about 30 rpm to about 300

2019253904 25 Oct 2019 rpm. In preferred embodiments, the motor 120 and auger 440 operate at a rotation speed less than 200 rpm. The motor 120 may be an electric motor powered with singlephase AC power. The motor 120 may have a power consumption of 0.75 to about 75 kW. For example, the power consumption may be between about 2 kW and about 10 or 20 kW. In some embodiments, the power consumption may be around 5.2 kW. The power requirement of the motor 120 may be advantageously lower than conventional washing systems which reduces the cost of recycling materials.

[0108] The power for the motor 120 may be provided by a local generator rather than mains electricity, which enables the washing module 101 to be used in remote locations that may not have access to mains electricity. This allows size reduction and washing to be performed prior to transport to regional centres and may thereby reduce transport costs. Mining companies are being encouraged to recycle rather than bury plastic waste, for example. Burying plastic waste may also be illegal in some areas. In the case of agricultural applications, plastic film contaminated with soil may be washed on the farm to allow the soil to be retained at the site. Typically, agricultural plastic film contains about 50% of soil by weight so transporting soil-contaminated agricultural film away from the farm is not desirable.

[0109] In some embodiments, the washing module 101 further comprises a chute 150 (or channel, ramp or guide) connected to the hollow body 110 near the exit 414 to receive washed recyclable particles. The chute 150 may be curved, for example. The chute 150 may have a ramped configuration, such that it extends downward at a steep angle near the exit 414 and curves to a shallower angle as the chute 150 approaches the particulate outlet (exit) 168 of the washing module 101.

[0110] The chute 150 may define a plurality of apertures 152 at spaced locations along its length to enable liquid to drain from the washed recyclable particles and through the apertures 152, while enabling the recyclable particles to travel along the chute 150. The chute 150 may, for example, comprise a screen or mesh. The apertures 152 may, for example, be arranged in an array that extends over an area of about 600 mm x 600 mm. The maximum dimension of the apertures is sized to be at least slightly

2019253904 25 Oct 2019 smaller than the smallest recyclable particle that the washing module 101 is designed to be used for. For example, if the washing module 101 is designed to wash particles as small as 3 mm, each aperture may be circular with about a 2 mm diameter. In some embodiments, the apertures may have a diameter in the range of about 1 mm to about 2.5 mm.

[0111] Referring to Figure 4, the chute 150 may be curved along at least part of its length. One end of the chute 150 may be attached to the hollow body 110 near the first exit 414. The chute 150 may be attached to the hollow body 110 via a bracket 452 to thereby retain the chute 150 in position relative to the hollow body 110. The bracket 452 may be configured to be removably attachable to assist in removal of the chute 150 for cleaning and/or maintenance.

[0112] The washing module 101 may comprise a cowl or hood (not shown) located above the chute 150 adjacent the exit 414 to assist in directing the recyclable particles ejected from the hollow body 101 onto the chute 150.

[0113] The washing module 101 may further comprise a shroud 160 connected to the hollow body 110 that covers the chute 150. The shroud 160 may comprise a door 162 that selectively provides access to the chute 150. The shroud 160 may define a first window 164 that enables visual inspection of at least part of the chute 150. The shroud 160 may define a second window 166 that enables visual inspection of the second exit 116. In some embodiments, the first window 164 and/or the second window 166 are defined by (or located in) the door 162.

[0114] The shroud 160 may also comprise an exhaust port or grill (not shown) towards a top region thereof to enable vapour or other gases to escape from the washing module 101.

[0115] The washing module 101 may further comprise an outlet chute 182 connected at a first end to the housing 160 at an outlet 168 to assist in enabling recyclable particles to exit the washing module 101. The outlet chute (third chute) 180 may also

2019253904 25 Oct 2019 enable the washing module 101 to be connected to other processing modules in the washing system 100, such as a drying module 602or another washing module 101, for example.

[0116] The washing module 101 may further comprise a funnel 170 located below either one or both of the hollow body 110 and the chute 150. In some embodiments, the funnel 170 is attached to a bottom end 167 of the shroud 160. The funnel 170 is configured to collect and/or funnel fluid that has drained from either one or both of the hollow body 110 via the second exit 116 and the chute 150 via the plurality of apertures 152. In some embodiments, the second window 166 enables visual inspection and physical access to the funnel 170.

[0117] The washing system 100 comprises a pump 222 adapted to supply the pressurised wash liquid to the liquid inlets 130, 232. The pump may be fluidly connected to the liquid inlets 130, 232 via a fluid conduit 223. The pump 222 may be fluidly connected to the funnel 170 to collect fluid from the hollow body 110 and/or chute 150 and thereby reuse and recirculate the wash liquid. Reuse and recirculation of wash liquid advantageously improves the efficiency of recycling by reducing the cost of washing recyclable particles.

[0118] In some embodiments, the pump 222 is configured to supply pressurised liquid with a pressure in the range of about 2 bar to about 6 bar. In some embodiments, the pump 222 is configured to supply pressurised liquid with a pressure in the range of about 3 bar to about 5 bar. In some embodiments, two or more pumps 222 may be used to pressurise the liquid. The pump 222 or pumps 222 may be capable of providing an output pressure of 16 bar and a flow rate of 10 cubic metres/hour.

[0119] The washing system 100 may further comprise a filter component 825 connected to the pump 222 at an upstream location, for example intermediate the pump 222 and a fluid supply (not shown). The filter component 825 filters the liquid provided to the pump 222 to prevent large contaminants from damaging the pump 222 and to reduce or prevent recontamination of the recyclable particles being washed.

2019253904 25 Oct 2019 [0120] Referring to Figure 5, the washing system 100 may comprise a drive structure

190 coupling the motor 120 to the washing module 101. The motor 120 may be coupled to the auger 440 via a belt (not shown) connecting an auger belt wheel (first belt wheel) 191 and a motor belt wheel (second belt wheel) 192. The auger belt wheel

191 is connected to the central shaft 442 of the auger 440 to enable torque from the motor to be transferred to the auger. The motor belt wheel 192 is connected to a drive shaft (not shown) of the motor 120. The drive structure 190 may also comprise a bushing connected to each of the central shaft 442 and the drive shaft of the motor 120. A belt driven system allows variation in rotational speed of the auger 440 and allows for slipping between the belt and the auger belt wheel in the event of a blockage and jamming of material within the hollow body 110. In some embodiments, the drive structure 190 comprises gears and/or a chain to couple the auger 440 to the motor 120.

[0121] The motor 120 may be mounted to the hollow body 110 via a bracket 122. The motor 120 may be positioned adjacent to and near the second end 115 of hollow body 110 such that no more than a minor portion of the motor 120 is higher than the second end 115. This advantageously reduces the height H of the washing module 110 (see Fig. 3b).

[0122] In an exemplary embodiment, the washing system 100 may be capable of washing 1000 kg/hr of recyclable particles such as LDPE or HDPE when operating the motor 120 at 5.2 kW with the washing module 100 in an upright orientation. In some embodiments, a wash rate (throughput) of 600 kg/hr may be obtained with the auger 440 operated at a rotational speed of 85 rpm. Higher wash rates of up to 4000 kg/hr may be obtainable with large diameter augers.

[0123] Referring to Figure 6, a washing system 600 is shown comprising a washing module 101 positioned within a housing 601 and a drying module 602. The drying module 602 may be connected to the washing module 101 via a chute 182 to receive washed recyclable particles from the washing module 101. The drying module 602 may comprise an internal rotor to agitate the recyclable particles and enable liquid to drain out of the drying module 602. The drying module 602 may comprise a motor (second

2019253904 25 Oct 2019 motor) 622 connected to the drying module 602 via a drive structure 694. The drive structure 694 may comprise any one or more of bushings, belt wheels, gears, a chain and a belt to couple the second motor 622 to the internal rotor.

[0124] The drying module 602 may comprise a exit chute (fourth chute) 684 to direct dried recyclable particles out of the drying module 602.

[0125] The washing system 100, 600 may comprise a liquid receptacle (first liquid receptacle) 672 to receive liquid from the plurality of apertures 152 of the chute 150. The liquid receptacle 672 may be located below the chute 150 (and/or the washing module 101). The liquid receptacle 672 may be fluidly connected to a pump 222 to act as a fluid supply and provide the received liquid to the plurality of liquid inlets 130, 232. A filter component 825 may be connected to the pump 222 at a location intermediate the pump 222 and the liquid receptacle 672.

[0126] The washing system 100, 600 may comprise another liquid receptacle (second liquid receptacle) 673 to receive liquid from the drying module 602. The second liquid receptacle 673 may be located below the drying module 602. The second liquid receptacle 672 may be fluidly connected to a pump 222 to provide the received liquid to the plurality of liquid inlets 130, 232, for example via an outlet port 675.

[0127] In some embodiments, the first liquid receptacle 672 may be fluidly connected to the second liquid receptacle 673. The washing system 100, 600 may alternatively comprise a single liquid receptacle (not shown) that serves the function of the first liquid receptacle 672 and the second liquid receptacle 673.

[0128] Referring to Figures 7a to 7e, a washing system 100, 600, 700 according to some embodiments is shown. The washing system 100, 600, 700 comprising a washing module 101, 701; a liquid receptacle 772; a motor 120, 720 connected to the washing module 101, 701; and a pump 222, 722. The washing module 101, 701 may comprise a manifold 734 fluidly connected to the plurality of liquid inlets 130, 730, 732. Pump

2019253904 25 Oct 2019

222, 722 may be fluidly connected to the manifold 734 to provide pressurised liquid to the manifold 734.

[0129] The manifold 734 is fluidly connected to the pump 222, 722 to receive pressurised fluid, for example, via a fluid conduit (supply conduit) 723. For example, the manifold 734 may be open at one end 736 to receive pressurised fluid. Each of the fluid inlets 730, 732 may be fluidly coupled to the manifold 734 via fluid conduits (distribution conduit) 735. The fluid conduits may, for example, comprise a hose or pipe. The fluid inlets 730 may also comprise high pressure fittings and/or adaptors.

[0130] The manifold 734 is adapted to distribute the pressurised liquid to each of the liquid inlets 730, 732. In some embodiments, the manifold 734 is adapted to distribute the pressurised liquid to provide uniform pressure and/or flow rate to each of the liquid inlets 730, 732.

[0131] The manifold 734 may be extended along the length of a corresponding column of liquid inlets 130, 730. The manifold 734 may comprise a hollow body adapted to receive pressurised fluid. In some embodiments, the hollow body has a tubular shape such as a cylinder.

[0132] In some embodiments, the washing module 101, 701 may comprise two or more manifolds 734. The manifolds 734 may be arranged parallel to each other and may also be on opposite sides of the hollow body 110.

[0133] Referring to Figure 8, the washing system 100, 600, 700, 800 may comprise two or more washing modules 101, 701 adjacent each other to provide two or more stages of washing. To enable washed particles to be fed from the first washing module 101, 701 into the second washing module 101, 701 the adjacent wash modules 101, 701 the outlet 168 of a first washing module 101, 701 may be positioned at a height relative to the entry 312 of a second washing module 101, 701. For example, the height of the entry 312 (second entry) may be positioned lower than that of the outlet 168 to receive washed recyclable particles (e.g. from the outlet chute 182, 882 of the first washing

2019253904 25 Oct 2019 module). This enables washing modules 101, 701 positioned adjacent each other at the same height to be readily coupled to each other in series.

[0134] In some embodiments, washed particles may drop or be otherwise fed from the first washing module 101, 701 to the second washing module 101, 701 without the washing modules 101, 701 being directly coupled to each other.

[0135] The outlet 168 of the first washing module 101, 701 may be coupled to the entry 312 of the second washing module 101, 701 via an outlet chute 182. The outlet chute 182 may, for example be connected to an inlet chute 180 of the second washing module 101, 701 [0136] In some embodiments, the first washing modules 101, 701 may be positioned at a higher level relative to the second washing modules 101, 701 to enable washed particles to more easily feed from the first washing modules 101, 701 to the second washing modules 101, 701.

[0137] In some embodiments, the washing system 100, 600, 700, 800 may comprise a rinsing module 830 coupled to the outlet chute 182, 882 of a washing module 101, 701. The rinsing module 830 may also comprise a rinse exit chute 832 that is configured to be coupled to the drying module 602. In some embodiments, the rinsing module 830 is identical in design to the washing module 101, 701. However, the liquid inlets 130, 232 of the rinsing module may be coupled to a different source of washing liquid, such as clean water.

[0138] In some embodiments, the washing system 100, 600, 700, 800 further comprises a drying module 602 configured to receive washed recyclable particles from the rinsing module 830 and output dried recyclable particles.

[0139] In some embodiments, the washing system 100, 600, 700, 800 further comprises a pump 222, 722 fluidly connected to a fluid supply 824. The pump 222, 722 may also be fluidly connected to at least one or more of the washing modules 101, 701

2019253904 25 Oct 2019 and the rinsing module 830 to provide pressurised liquid or fluid. The pump 222, 722 may also be connected to the drying module 602 to receive fluid from the drying module 602.

[0140] The washing system 100, 600, 700, 800 may further comprise a filter component 825 connected to the pump intermediate the pump 222, 722 and the fluid supply 824 to filter fluid provided to the pump 222, 722. The filter component 825 may also be connected to the pump intermediate the pump 222, 722 and any one or more of the washing modules 101, 701, the rinsing module 830 and the drying module 602.

[0141] In some embodiments, the washing system 100, 600, 700, 800 further comprises a size-reduction module 810 (e.g. a granulator) to form smaller constituents, particles and/or particulates. The size-reduction module 810 may pulverize, grind, shred, chop or cut received recyclable materials to form recyclable particles. The sizereduction module 810 may be coupled to the washing module 101, 701 via a chute, conveyor or auger 811, for example.

[0142] The washing system 100, 600, 700, 800 may comprise an entry conveyor or chute 801 coupled to the size-reduction module 810 for receiving recyclable material.

[0143] In some embodiments, the washing system 100, 600, 700, 800 further comprises a packaging module 850 configured to receive dried recyclable particles from the drying module 602 and deposit the dried recyclable particles into a storage container or bag. The packaging module 850 may be configured to simultaneously deposit dried recyclable particles into two containers/bags. The packaging module 850 may be coupled to the drying module 602 via a blowing system, a conveyor or auger 842, for example.

[0144] In some embodiments, the packaging module 850 comprises a weighing system for determining the weight of the dried recyclable particles in the containers/bags.

2019253904 25 Oct 2019 [0145] The washing system 100, 600, 700, 800 may also comprise a control panel 860 that is coupled to one or more of the components: entry conveyors 801, size-reduction module 810, chutes, conveyors or augers between modules 811, 882, 832, 842, two washing modules 101, 701, a rinse module 830, and a drying module 602. The control panel 860 may be for example wirelessly connected to the components or connected via an electrical cable or wires 861.

[0146] The control panel 860 may comprise a controller, user interface and display to control and/or monitor operation of the washing system 100, 600, 700, 800. For example, the control panel 860 may be used to adjust or set the rotational speed of the auger 440 in one or more of the washing modules 101. The control panel 860 enables a single user to operate the washing system 100, 600, 700, 800. The controller may comprise a programmable logic controller (PLC). The user interface may comprise a touch screen. The control panel 860 may comprise an output communication socket or a transmitter to provide data to or exchange data with external devices, such as computing devices (e.g. computers, smart phones).

[0147] The determined weight may be monitored and/or displayed on the control panel 860. In some embodiments, the controller may be configured to automatically halt operation of the washing system 100, 600, 700, 800 to enable containers/bags to be replaced.

[0148] The overall area (footprint) taken up by the washing system 100, 600, 700, 800 may be advantageously less than about 50 m². For example, the foot print may be about 32 m².

[0149] The overall length A of the system 100, 600, 700, 800 including any entry conveyors 801, size-reduction module 810, chutes, conveyors or augers between modules 811, 882, 832, 842, two washing modules 101, 701 a rinse module 830, a drying module 602 and a control panel 860 may be less than about 15 m, for example about 12 m. The overall width B of the system 100, 600, 700, 800 may be in the range of about 2 m to about 3 m.

2019253904 25 Oct 2019 [0150] It will be appreciated by persons skilled in the art that numerous variations and/or modifications may be made to the above-described embodiments, without departing from the broad general scope of the present disclosure. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive.

Claims (43)

1. CLAIMS:

   1. A system for washing recyclable particles comprising:

   a first washing module comprising:

   a hollow body defining an entry at a first end of the hollow body to receive the recyclable particles, and an exit enabling the recyclable particles to leave the hollow body, the exit at a second end of the hollow body opposite the first end;

   a plurality of liquid inlets configured to receive and spray pressurised liquid into the hollow body to wash recyclable particles within the hollow body;

   an auger at least partially located within the hollow body extending between the first end and second end, wherein the auger is configured to rotate to transport the recyclable particles from the entry to the exit;

   a motor connected to the auger and configured to rotate the auger; and a chute adapted to connect to the exit of the first washing module and receive washed recyclable particles.
2. 2. The system of claim 1, wherein the hollow body defines closed ends at the first and second end.
3. 3. The system of claim 1 or 2, wherein the hollow body comprises an outer wall with an inner surface that defines a tubular tunnel and the auger is configured to be at least partially located within the tubular tunnel.
4. 4. The system according to any one of claims 1 to 3, wherein the auger comprises a helical screw blade and has a first pitch at a first section of the auger that is different to a second pitch at a second section of the auger.
5. 5. The system according to any one of claims 1 to 4, wherein the auger comprises a helical screw blade and has a first pitch near the first end of the hollow body that is larger than a second pitch of the auger near the second end of the hollow body.
6. 6. The system according to claim to 5, wherein the first pitch is in the range of about 250 mm to about 500 mm.

   2019253904 25 Oct 2019
7. 7. The system according to either claim 5 or 6, wherein the second pitch is in the range of about 50 mm to about 249 mm.
8. 8. The system according to any one of the preceding claims, wherein the auger has an outer blade diameter in the range of 200 mm to 2000 mm.
9. 9. The system according to any one of the preceding claims, wherein the hollow body of has a length in the range of 2000 mm to 3000 mm.
10. 10. The system according to any one of the preceding claims, wherein the hollow body has a length greater than a width of the hollow body.
11. 11. The system according to any one of the preceding claims, wherein the auger comprises helical screw blades with a thickness in the range of about 3 mm to about 20 mm.
12. 12. The system according to any one of the preceding claims, wherein the helical screw blades have a flight depth in the range of about 20 mm to about 250 mm.
13. 13. The system according to any one of the preceding claims where the auger comprises a central shaft that has any one of: a square, circular rectangular, and elliptical transverse cross-section.
14. 14. The system according to any one of the preceding claims, wherein the motor and auger are configured such that the auger is rotatable at a rate up to about 300 rpm.
15. 15. The system according to any one of the preceding claims, wherein the plurality of liquid inlets is arranged along a length of the hollow body.
16. 16. The system according to claim 15, wherein the plurality of liquid inlets are arranged along one or more columns along a length of the hollow body.
17. 17. The system according to any one of the preceding claims, wherein the chute comprises a base that is curved along at least part of its length.
18. 18. The system according to any one of the preceding claims, wherein the chute comprises a plurality of apertures sized to enable liquid to pass through the apertures while enabling the recyclable particles to travel along the chute.

    2019253904 25 Oct 2019
19. 19. The system according to claim 18, further comprising a liquid receptacle located below the chute to receive liquid that has passed through the apertures and provide the received liquid to the plurality of liquid inlets.
20. 20. The system according to any one of the preceding claims, wherein the hollow body defines a second exit at the first end to enable liquid to drain out of the hollow body.
21. 21. The system according to claim 20, wherein the second exit comprises a drainage grate.
22. 22. The system according to any one of claims 18 to 21, further comprising a funnel located below at least one of the hollow body and the chute to collect liquid.
23. 23. The system according to any one of the preceding claims, further comprising a pump adapted to supply the pressurised liquid to the liquid inlets, wherein the pump is fluidly connected to the liquid inlets via a fluid conduit.
24. 24. The system according to claim 23, further comprising a filter component connected to the pump intermediate the pump and a fluid supply to filter fluid provided to the pump.
25. 25. The system according to either claim 23 or 24 as dependent on claim 19, wherein the pump is fluidly connected to the liquid receptacle.
26. 26. The system according to any one of the preceding claims, wherein the hollow body of the first washing module is oriented at an angle relative to the ground.
27. 27. The system according to any one of the preceding claims, wherein the hollow body of the first washing module is upstanding.
28. 28. The system according to any one of the preceding claims, further comprising a drying module configured to receive recyclable particles via the chute of the first washing module and to dry the received washed recyclable particles.
29. 29. The system according to any one of the preceding claims, further comprising a second washing module as defined by any one of the preceding claims, wherein a second entry of the second washing module is positioned to receive washed recyclable particles from the chute of the first washing module.

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30. 30. The system according to claim 29, wherein the hollow body of the first and/or second washing module is positioned such that the first end is lower than the second end and the entry is lower than the exit.
31. 31. The system according to any one of claims 29 to 30, wherein the hollow body of the second washing module is oriented at an angle relative to the ground.
32. 32. The system according to any one of the claims 29 to 31, wherein the hollow body of the second washing module is upstanding.
33. 33. The system according to any one of claims 29 to 32, further comprising a drying module configured to receive recyclable particles via the chute of the second washing module and to dry the received washed recyclable particles.
34. 34. The system according to claim 33, further comprising a packaging module configured to receive dried recyclable particles from the drying module and transport the dried recyclable particles into a storage container or bag.
35. 35. The system according to any one of the preceding claims, wherein the system occupies a floor area of less than about 50 m².
36. 36. The system according to any one of the preceding claims, wherein the motor has a maximum power capacity in the range of about 0.75 to about 75 kW.
37. 37. The system according to any one of the preceding claims, wherein the system is adapted to wash recyclable particles with a smallest dimension greater than about 0.5 mm.
38. 38. The system according to any one of the preceding claims, wherein the washing module comprises a valve and a set of the plurality of liquid inlets is coupled to the valve.
39. 39. The system according to any one of the preceding claims, wherein the washing module comprises a plurality of valves and at least two sets of the plurality of liquid inlets are coupled to the valves.
40. 40. The system according to any one of the preceding claims, wherein the washing module further comprises a manifold attached to the plurality of liquid inlets and adapted to distribute pressurised liquid to the plurality of liquid inlets.

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41. 41. The system according to any one of the preceding claims, further comprising a size reduction module configured to generate the particles from material of a larger size.
42. 42. A washing module comprising:

    a hollow body defining an entry at a first end of the hollow body to receive the recyclable particles, and an exit enabling the recyclable particles to leave the hollow body, the exit at a second end of the hollow body opposite the first end;

    a plurality of liquid inlets configured to receive and spray pressurised liquid into the hollow body to wash recyclable particles within the hollow body; and an auger at least partially located within the hollow body extending between the first end and second end, wherein the auger is configured to transport the recyclable particles from the entry to the exit.
43. 43. The washing module of claim 42, further comprising a manifold attached to the plurality of liquid inlets and adapted to distribute pressurised water from a pressurised water source to the plurality of liquid inlets.