WO2015123746A1 - Système de lavage de canne à sucre à sec - Google Patents

Système de lavage de canne à sucre à sec Download PDF

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Publication number
WO2015123746A1
WO2015123746A1 PCT/BR2015/000020 BR2015000020W WO2015123746A1 WO 2015123746 A1 WO2015123746 A1 WO 2015123746A1 BR 2015000020 W BR2015000020 W BR 2015000020W WO 2015123746 A1 WO2015123746 A1 WO 2015123746A1
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WO
WIPO (PCT)
Prior art keywords
straw
cane
conveyor
belt
conveyors
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/BR2015/000020
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English (en)
Portuguese (pt)
Inventor
Paulo de Tarso DELFINI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raizen Energia SA
Original Assignee
Raizen Energia SA
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 Raizen Energia SA filed Critical Raizen Energia SA
Publication of WO2015123746A1 publication Critical patent/WO2015123746A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B07B4/025—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall the material being slingered or fled out horizontally before falling, e.g. by dispersing elements
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D45/00—Harvesting of standing crops
    • A01D45/10—Harvesting of standing crops of sugar cane

Definitions

  • the invention is in the area of the Product Processing Industry. Agricultural, more specifically in the Sugarcane Industry, as it refers to a dry cane cleaning system.
  • Document PM 1 02849-1 discloses a process and equipment for dry cleaning of sugar cane, harvested on pallets and containing straw and other impurities.
  • the similarity of this document with the present invention is only in the use of blowing in the conveyor belt transfer.
  • the differences with respect to the present invention are: the air jet steering which in the present invention is top to bottom taking advantage of the effect of gravity on particle separation, with lower energy consumption and higher efficiency.
  • the system described in PM 1 02849-1 fore sees ducts for diversion of the various flows (air, cane and straw) not existent in the present invention where the separation is made only by the displacement
  • differentials of the present invention two options to the described basic system may be differentials of the present invention:
  • the industrial application of the invention relates to the fact that the dry sugar cane cleaning system is produced and used in industrial environment.
  • the invention relates to a dry cane cleaning system comprising belt conveyors, blowing means, impurities separation and optimized configuration for moving the cane.
  • Figure 1 is a graphical representation demonstrating an overview of the dry cane cleaning system with 2 blowing points in conveyor cane transfer (drop) through centrifugal fans and separation chambers directing impurities to the collection chamber from which they are removed by
  • Figure 2 is a graphical representation showing an overview of the cane receiving, discharging and feeding system for the dry cleaning system, through the hilos, of a metal mat and a chopped cane spreader dosing the cane. on a chopped cane belt conveyor to guide it to the dry cleaning system.
  • Figure 3 is a graphic representation showing an overview of the straw tillage system.
  • the straw collected and removed from the collection chamber via the belt conveyor is driven by the conveyor (s) and fed into one or more rotating sieves that unloads the clean straw to be fed into one or more straw choppers
  • Figure 4 is a graphical representation demonstrating a overview of the earth separation and disposal system through one or more rotating screens under which the earth is collected and transported to a disposal hopper via the belt conveyors to earth.
  • the division of the straw for the rotating screens is made by a divider device through 2 rotors that rotate in opposite directions in order to avoid a straw accumulation;
  • the earth being stored in the hopper is periodically discharged through a hydraulic or pneumatic device into dump trucks returning to the farm.
  • Figure 5 is a graphical representation demonstrating a first option to the basic system which is straw blowing, with a spreader that is located at the conveyor belt unloading, cane drop in the transfer region, breaking and scattering bundles. and sugar cane casings, allowing the blown straw to flow more easily through the cane layer and to be effectively directed to the impurity collection chamber.
  • Figure 6 is a graphical representation demonstrating a second option to the basic system which is the blowing of straw by applying a very high speed on the belt conveyor of the order of 300 to 400 m / min causing an inertial separation of the sugar cane and straw pallets prior to blowing, facilitating the action of the air blast to guide the straw into the impurities collection chamber.
  • the invention relates to a dry cane cleaning system comprising belt conveyors, blowing means, impurities separation and optimized configuration for moving the cane.
  • the straw preparation system comprises one or more of the following elements: 1 or 2 rotary sieve screens (3A) for separating the earth from the straw; 1 or 2 rotary straw choppers positioned at the discharge of the straw sieves (3A); 1 or more belt conveyors for screening and shredded straw (3C / 3D) for boiler burning, storage or other application; 1 or more separate earth conveyor belt conveyors (3E / 3F) on straw sieves (3A) and 1 hopper (4A) for harvesting and storing the segregated straw land that is returned to the farm using dump trucks. If more than one rotary screen (3A) is used, the system shall also contain a divider divider device (4B) to feed the rotary screens (3A).
  • the dry sugar cane cleaning system may optionally further contain and adding two additional differentials to the process of the present invention, the first being the use of cane spreaders (5B) in the discharge of the belt conveyor (1A). / B), within the impurity separation chamber (s), breaking and spreading packets and canes, and increasing the efficiency of the separation of impurities, and the second blowing straw (5A) high speed on the belt conveyor (1 A / 1 B) of the order 300 to 400 m / min, causing inertial separation (6B) of the cane and straw bundles prior to blowing, facilitating the action of the air blast to drive the straw into the impurities collection chamber (1 G).
  • two differentials apply separately, and the use of both in the same chamber is not an objective.
  • the cane unloading equipment is preferably a mechanical helix (2A) of 42 to 55 t, in the amount of 1 to 2 hilos (2A) in the cleaning system.
  • the mechanical heel (2a) has the function of discharging the chopped sugar cane industry arriving at the top with buckets rocker (2F) for rodotrem (bucket 12.5 m long and 90 m 3 volume) or treminh ⁇ o (smaller buckets, with lengths of 8.5 to 11 1.0 m with a volume of 50 to 80 m 3 ).
  • 2 hilos (2A) are installed side by side to simultaneously discharge the 2 buckets, halving the discharge cycle time, doubling the system capacity.
  • the mechanical hilo (2A) is the
  • Preferred equipment is not mandatory and its function can be replaced by other type of equipment for unloading cane.
  • the cane receiving and dosing equipment is preferably a high capacity metering mat (2C) with a width between 213 to 254 cm (approximately 84 "to 100") and a length of 25 m to 40 m (according to the amount of equipment used for cane unloading - preferably mechanical hilos).
  • the high capacity metal dosing belt is driven by electric motor, with speed control frequency inverters, from 55 to 150 kilowatts (approximately 75 to 200 hp). It has the function of receiving the cane discharged by the hilo (s) (2A) and dosing it to the chopped cane belt conveyor (2E) as evenly as possible, a vital condition for the efficiency of the separation system, in which sugarcane packages make it difficult to separate
  • This treadmill must have a high capacity and can therefore For example, reach up to 1,500 t / h with 2 hilos (2A), with a large volume of cane inside, which needs to be dosed evenly into the chopped cane belt conveyor (2E) that will feed the cleaning system. dry.
  • the metal dosing belt is preferred, but not mandatory, and its function can be replaced by other equipment that receives the discharged cane and dose it to the chopped cane belt conveyor.
  • the chopped cane spreader (2D) is a rotary equipment consisting of a plurality of radial arms distributed along its width and along the circular position. Its function is to break the possibility of cane bundle formation in the transfer of the metal conveyor to the chopped cane belt conveyor (2E).
  • an adjustment feature is provided to define in the installation the best positioning for a good operation depending on the configuration of the belt, the quality of the cane, etc. It rotates at a speed in the range of 60 to 90 rpm, with diameters from 1,200 to 3,000 mm, driven by electric motor and gearbox with power of 30 to 55 kilowatts (approximately 40 to 75 hp). If the system is mounted with a metering belt (2C), this equipment becomes
  • (2E / 1A / 1 B / 1 J) are commercially available rubber canvas conveyors used in various material handling applications.
  • the belts have a width of 230 to 280 cm (90 "to 1 10"), always wider than the metal dosing belt (2C). They normally work at speeds of 100 to 150 m / min and are driven by electric motor and frequency inverters for speed control.
  • the installed power varies depending on the length and inclination of the conveyor and may vary from 20 to 225 kilowatts (approximately 30 to 300 hp).
  • Centrifugal fans (1 C / 1 D) have the function of injecting air into the separation chambers (1 E / 1 F) to promote the separation of impurities, mainly from straw, whose density is much lower than that of sugarcane. its surface is very suitable for air action in the
  • the fans (1 C / 1 D) are positioned in the transfer (drop) region of the cane from one belt conveyor (1 A) to the next (1 B) and from the conveyor (1 B) to the next (1 J) .
  • the conveyor (1 J) may not exist, with the unloading of the conveyor (1 B) directly feeding the existing cane preparation feeding system. They are always positioned in such a way that ventilation occurs from the top to the bottom (in a favorable vector composition with respect to gravity) and in such a way as to ensure that the path of the separated particles leads them towards the impurity collection chamber ( 1 G), from where they are removed by the belt conveyor (1 H) for straw and earth to be carried through the
  • each fan (1 C / D) can be from 70,000 to 50,000 m 3 / h with static pressure in the order of 2450 Pascal (approximately 250 mmca).
  • the flow may vary in operation by adjusting the opening of the air supply dampers or by the frequency inverters installed in the electric drive motors. For the same flow rate, the speed and or direction of the air jet may still be changed by the adjustment provided on the upper or lower plate of the fan outlet duct (1 C / 1 D).
  • the installed power may range from 55 kilowatts to 1 1 5 kilowatts
  • the impurity separation chambers (1 E / 1 F) are positioned in the sugarcane transfer (drop) region of the
  • cane belt conveyors (1 A / 1 B), consisting of a fairing with full closing of the sides, front and top, with an inlet to the air duct of the fan (s) (1 C / 1 D) and an opening in its rear region, in the space between the front belt conveyor (1 A / 1 B) and the belt conveyor or rear cane preparation feed system (B / J). It must be designed and constructed with special care so that upon receiving the blowing action (air) the flow of sugarcane and impurities follow adequate paths to promote separation between them allowing no piece of sugarcane to follow the same path as those. impurities thus preventing elevation of the level of losses in the system. These precautions are related to the relative positioning between the conveyors, the fan ducts and the impurities collection chamber (1 G).
  • cane spreaders (5B) may be provided within the separation chamber (1 E / 1 F) to break possible cane packets and impurities, facilitating their separation.
  • Another feature to improve the efficiency of the separation chamber is to increase the speed of the belt conveyor that is supplying the cane to the chamber, causing a prior inertial separation (6B) of the cane and straw due to the significant density difference between them, facilitating the action of air to complement the separation.
  • Separation chambers (1 E / 1 F) are essential and mandatory for the operation of the invention.
  • the expansion chamber (depressurization) and collection of impurities (1 G) is positioned under the impurities separation chambers (1 E / 1 F), with a special conveyor belt for straw and earth (1 H) at the bottom, leading them to the impurities preparation system. straw so that it can be used in other applications.
  • the 2 sides of the chamber are closed with small opening screens to allow air to vent to depressurize the chamber.
  • the total screen area must be sized for an average air exhaust flow in the order of 0.5 m / sec. Depressurization of the chamber is indispensable so that no interference occurs in the path of the impurities in the separation chamber, which would imply a significant loss of efficiency . cleaning.
  • depressurization has the function of allowing the separated impurities to fall into the belt conveyor (1 H) positioned at the bottom of the separation chamber.
  • the side screens must be installed all vertically and respecting the useful width of the conveyor (1 H) positioned at its bottom, avoiding slanted sides that interfere with the straw fall, impairing the continuous operation of the system.
  • Impurities together with the separation chamber are essential and obligatory for the operation of the invention.
  • Impurities conveyors are rubber canvas conveyors used commercially in a variety of material handling applications. In this case, the specification of rubber coatings provides for special conditions for abrasion resistance.
  • the straps can have widths of 165 to 245 cm (66 "to 96"). They normally work at speeds of 80 to 150 m / min and are driven by electric motor and frequency inverters for speed control.
  • the installed power varies depending on the length and inclination of the conveyor and may vary from 20 to 1 1 5 kilowatts (approximately 30 to 150 hp).
  • the function of the first conveyor (1 H) installed at the bottom of the depressurization and collection chamber is to receive impurities and conduct for other earth and straw conveyors (1 1), the amount of which depends on the layout of the installation site, until feeding one or more rotary straw sieves (3A) where the straw preparation process for various uses begins, ie unloads the clean straw to be fed into one or more straw choppers (3B) from which the prepared straw flows to the chopped straw belt conveyors
  • the rotary straw sieves (3A) are rotating rotors, provided with perforated screens composing their cylindrical shape in order to separate the mineral impurities from the vegetables before the
  • the sieve rotor rotates about 6 to 10 rpm and inclines from 1 to 5 o .
  • the sieve (3A) has internal helicoids for retaining / driving the straw through the sieve rotor (3A), and the helicoids have transverse fins in the axial direction to promote greater agitation or movement of the straw inside the rotor to increase efficiency.
  • separation of mineral impurities from vegetables Separate mineral impurities through the perforated screens are collected under the sieve rotor and conveyed via conveyor belts of mineral impurities (3E / 3F) to a disposal hopper (4A). Vegetable impurity with low mineral impurity content is discharged at the end of the screen rotor
  • Rotary straw chopper is a composite assembly of a small belt conveyor at the end of which there is a drum to assist the straw in a rotor consisting of a plurality of rotating hammers rotating from 800 to 1200 rpm in order to reduce the size of the straw particles by impact of these on straw particles and these on a serrated circumferential grid in the transverse direction.
  • the hammers are oscillating type mounted on a set of 6 or 8 oscillating axes arranged hexagonally or octagonally on brackets mounted on the mainshaft. After passing through the chopper the straw is unloaded on the chopped straw belt conveyors (3C / 3D).
  • mincers are not mandatory for the operation of the invention, but are indispensable to the system if this straw is used for any application other than direct disposal.
  • Shredded straw conveyors are rubber canvas conveyors used commercially in a variety of material handling applications. In this case, the specification of rubber coatings provides for special conditions for abrasion resistance.
  • the straps can have widths of 1335 to 215 cm (approximately 54 "to 84"). They normally work at speeds of 80 to 150 m / min and are driven by electric motor and frequency inverters for speed control.
  • the installed power varies depending on the length and inclination of the conveyor and may vary from 20 to 15 kilowatts (approximately 30 to 150 hp).
  • the function of these conveyors is to carry the chopped straw to the place where it will be used, for example, for direct burning in the steam generation boilers, not constituting mandatory equipment for the operation of the invention.
  • the separate ground belt conveyors (3E / 3F) rotary screens are commercially available rubber canvas conveyors used in various material handling applications. In this case, the specification of rubber coatings provides for special conditions for abrasion resistance.
  • the belts (3E / 3F) can have widths from 90 to 170 cm (36 "to 66"). They work .
  • the ground hopper (4A) separated by the sieve (3A) is a rectangular profile box with a lid at its bottom that can be opened by a hydraulic or pneumatic device (4E) from a remote control. system operator's or the driver's own manual of a tipper (4D) that will transport and return land to the field. These are not mandatory equipment for the operation of the invention.
  • Figure 1 is a graphical representation demonstrating an overview of the dry cane cleaning system with 2 blowing points on conveyor (1 A / 1 B) cane transfer through centrifugal fans (1 C / 1 D) and separation chambers (1 E / F) directing impurities to the collection chamber (1 G) from which they are removed by the straw and earth belt conveyor (1 H) to be driven through from the conveyor (s) (11) to the straw preparation system shown in figure 3.
  • Figure 2 is a graphical representation demonstrating a general view of the cane receiving, discharging and feeding system for the dry cleaning system through the hilos (2A), a metal mat (2C) and a spreader chopped sugarcane (2D) by dosing the sugarcane a chopped cane belt conveyor (2E) for guiding it to the dry cleaning systems.
  • Figure 3 is a graphical representation demonstrating an overview of the straw tillage system.
  • the straw collected and removed from the bucket chamber (1 G) through the belt conveyor (1 H) is conveyed by the conveyor (s) (1!) And fed into one or more rotating screens (3A) which discharges the clean straw to be fed into one or more straw choppers (3B) from which prepared straw flows to the chopped straw belt conveyors (3C / 3D), leading it to its end use.
  • the earth removed by the rotating screen (3A) is driven by the earth belt conveyors (3E) and (3F) for disposal.
  • Figure 4 is a graphical representation demonstrating an overview of the land separation and disposal system through one or more rotating screens (3A), under which the earth is collected and transported to a disposal hopper (4A). ) through
  • the division of the straw for the rotary screens is performed by a divider device (4B) through a deflector plate (4F) driven by a hydraulic or pneumatic device (4G) from a manual operator of the system operator.
  • the normal working position of this plate is vertical, dividing the flow of impurities into the two screens.
  • 2 rotors (4C) are rotated in opposite directions and positioned above the plate.
  • the deflector plate is moved by the device (4G) by capping the outlet of the device (4B) to that sieve and forming a ramp that diverts the flow of impurities to the other sieve.
  • Figure 5 is a graphical representation demonstrating the blowing of the straw (5A) with the spreader option (5B) which is located at the belt conveyor discharge (A / 1B) at the fall of the cane in the region. transfer, breaking and spreading sugar cane packages and pallets, allowing the blown straw to flow more easily through the cane layer and to be effectively directed to the impurities collection chamber (1 G).
  • Figure 6 is a graphical representation demonstrating the blowing of straw (5A) with the option of applying a very high speed to the belt conveyor (1A or 1B), on the order of 300 to 400 m / min, causing a inertial separation (6B) of the sugar cane and straw tufts prior to blowing, facilitating the action of the air blast to drive the straw into the impurity collection chamber.

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  • Combined Means For Separation Of Solids (AREA)

Abstract

Dans le domaine du pré-traitement de la canne à sucre par l'industrie du sucre et de l'alcool, la demande internationale concerne un système de lavage à sec de canne à sucre, comprenant : des équipements pour le déchargement de la canne à sucre, un équipement de réception et dosage de la canne à sucre, un distributeur de canne à sucre déchiquetée (2D), au moins deux transporteurs à courroie pour la canne à sucre déchiquetée (2E/1A/1B/1J), deux ventilateurs centrifuges (1C/1D) disposés au niveau de la partie finale de chaque transporteur à courroie (1A/1B) et du point de transfert de la canne à sucre vers le transporteur suivant, deux chambres de séparation d'impuretés (1E/1F), une chambre de dépressurisation et de collecte d'impuretés (1G), un transporteur spécial à courroie pour la paille (1H) situé au niveau de la base de la chambre de dépressurisation et de collecte d'impuretés (1G), un ou plusieurs transporteurs d'impuretés (11) pour acheminer les impuretés vers le système de préparation de la paille, dans lequel la terre est séparée de la paille, puis évacuée, la paille propre arrivant alors au déchiqueteur de paille (3B). Cette structure permet d'obtenir une plus grande efficacité dans le lavage et la séparation de la paille de la canne à sucre récoltée et transportée jusqu'à l'usine de traitement, mettant à profit la gravité pour faciliter la séparation, avec une simplicité accrue et une consommation d'énergie réduite.
PCT/BR2015/000020 2014-02-21 2015-02-23 Système de lavage de canne à sucre à sec Ceased WO2015123746A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR1020140040811 2014-02-21
BR102014004081-1A BR102014004081B1 (pt) 2014-02-21 2014-02-21 sistema de limpeza de cana de açúcar a seco

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WO2015123746A1 true WO2015123746A1 (fr) 2015-08-27

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PCT/BR2015/000020 Ceased WO2015123746A1 (fr) 2014-02-21 2015-02-23 Système de lavage de canne à sucre à sec

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WO (1) WO2015123746A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119999459A (zh) * 2025-04-16 2025-05-16 洛阳四达农机有限公司 一种秸秆分草粉碎一体机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017143420A1 (fr) * 2016-02-22 2017-08-31 Raízen Energia S/A. Procédé et appareil de prétraitement de biomasse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854585A (en) * 1973-02-28 1974-12-17 J Herkes Cleaning apparatus for machine harvested sugar cane
BR0200136A (pt) * 2002-01-21 2003-10-21 Cooperativa De Produtores De C Dispositivo para limpeza pneumática de toletes de cana de açucar
BRPI0405240A (pt) * 2004-11-26 2006-07-04 Guilherme Filho Cella estação de limpeza de cana a seco e sistema de limpeza de cana por ventilação
BRMU9000300U2 (pt) * 2010-03-09 2011-11-01 Ctc - Centro De Tecnologia Canavieira S.A. peneira rotativa para separação de impurezas minerais na indústria sucroalcooleira

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854585A (en) * 1973-02-28 1974-12-17 J Herkes Cleaning apparatus for machine harvested sugar cane
BR0200136A (pt) * 2002-01-21 2003-10-21 Cooperativa De Produtores De C Dispositivo para limpeza pneumática de toletes de cana de açucar
BRPI0405240A (pt) * 2004-11-26 2006-07-04 Guilherme Filho Cella estação de limpeza de cana a seco e sistema de limpeza de cana por ventilação
BRMU9000300U2 (pt) * 2010-03-09 2011-11-01 Ctc - Centro De Tecnologia Canavieira S.A. peneira rotativa para separação de impurezas minerais na indústria sucroalcooleira

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119999459A (zh) * 2025-04-16 2025-05-16 洛阳四达农机有限公司 一种秸秆分草粉碎一体机

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