DE69433575T2 - New process for displacement of raw juice - Google Patents

Description

1.1 - Preparation

First have to the cells containing the juice are opened so that the extractable Sugar cane juice is ready for leaching and displacement.

In modern sugar factories can with the help of heavy crushers up to 94% of the cells open become.

1.2 - Juice withdrawal by dry exerting pressure

80 to 84% of the extractable tube juice ( 1 ) can be obtained by dry pressure in a mill. The sugar gain (Pol) is between 60 and 80%. In order to achieve a higher profit, one has to turn to imbibition. The goal of imbibition is to dilute the extractable tube juice, before the last juice withdrawal by pressure.

1.3 - Juice withdrawal by leaching process in the mill

• – Der entziehbare Saft in der Bagasse wird durch einen Auslaugungsverfahren verdünnt, indem dünnerer Saft von der flußabwärts liegenden Etappe dazu kommt und letztlich durch Wasserimbibition.
• – Danach wird der gemischte Saft in einer Mühle von der Faser getrennt, die festflüssig Trennung ist recht gut, was wir beim Trockenzerquetschen gemerkt haben. Aber da 4 bis 7 Mahlvorgänge nötig sind, um die gewünschte Gewinnrate (95 bis 98%) zu erzielen, sowie 3 bis 6 Imbibitionsstadien, hat das Verfahren des Auszugs durch Mühlenverarbeitung die folgenden Nachteile: hohe Auslagen und Unterhaltungskosten, hohe Stromkosten.

In conventional mills, No. 1 mill bagasse is processed in a multi-stage countercurrent dilution process. In each stage two separate actions take place:

• The extractable juice in the bagasse is diluted by a leaching process by adding thinner juice from the downstream stage and ultimately water imbibition.
• - Then the mixed juice is separated in a mill from the fiber, the solid liquid separation is quite good, which we have noticed in the dry crimping. However, since 4 to 7 grinding operations are required to achieve the desired recovery rate (95 to 98%) and 3 to 6 stages of imbibition, the process of extraction by mill processing has the following drawbacks: high expenses and maintenance costs, high electricity costs.

Besides that is the efficiency of the stage (measured by Murphree criterion (2), surprising low for an industrial process (25 to 35%).

Out all these reasons is the use of mills for the Juice withdrawal often by the most famous Writers have been denounced. For example, in 1929 wrote Francis Maxwell (3) (the writer of the famous manual "Modern mill processing of sugarcane "): mills in action " something to the cave age: pure brutal strength, huge, unusable metal masses, a lot of electricity and incredible much pressure".

• (1) Entziehbarer Saft % Rohr = 100 – 1.25F Wenn Faser % Rohr (F) 16 ist dann ist entziehbarer Saft % Rohr 80%
• (2) Leistungsfähigkeit der Etappen = erreichter Brix-Fall während der Etappe erreichbarer Brix-Fall, mit 100% richtiger Mischung)
• (3) „Eine vergleichbare Untersuchung von Mühlen in Cuba, Hawaii und Java" (3. Kongressprotokoll ISSCT)

Emile Hugot says in his famous "Handbook of Sugarcane Technology": "Crushing is a barbaric extraction system".

• (1) Extractable Juice% Tube = 100 - 1.25F If Fiber% Tube (F) is 16 then Extractable Juice% Tube is 80%
• (2) Capacity of the stages = reached Brix case during the stage attainable Brix case, with 100% proper mix)
• (3) "A Comparative Investigation of Mills in Cuba, Hawaii and Java" (3rd Congress Protocol ISSCT)

All Try to improve the stage performance, that is the number the mills used to reduce, never has commercial Success (1).

1.4. - Juice withdrawal by leaching process in sugarcane "diffusers"

since the 1970s, there were some countries (especially in South Africa) Changeover from crushing to diffusion. But pipe diffusers were empirically from Rübendiffusoren or from counter-flow extractors, developed in other industries. This was not the scientific way those of F. Maxwell in In 1929 it had been recommended: "Scientific exam to address the factors ... should pave the way for more rational ones Pave means for inducing the juice being its cell structure preserved".

Now commercially available Diffusers are cheaper to use and consume less energy mills, but the stage efficiency Diffusion is nothing better than crushing. The Number of stages that should be between 4 and 7 {depending on the imbibition rate) assuming that 100% is well mixed are between 15 and 18 (this is the stage performance between 4/15 (26.7%) and 7/18 (38.9%).

2 - The displacement method: A deviation from the Process by leaching

2.1. - Noel Deer according to (manual over Sugarcane "1921), was the concept of "replacement or Displacement extractor "(the mixing / separation process, still in use, juxtaposed), in Patented in 1889 by Matthey. (2)

in the In 1962, John Payne (3) has gone through the benefits of the procedure displacement pointed.

In 1963, the same writer reported on the execution of the displacement method in Hawaii (4), which took place on a trial production line and on a commercially available diffuser found.

Of the Advantage of repression across from Mixing / Separating works best with the Ponchon-Savarit chart be demonstrated:

I is the diagram of a conventional 5 mills tandem ( 5 ). It shows that the brix of extractable juice in the bagasse exiting at a certain stage is much higher (5 to 7 points) than the juice separated from the same stage.

• (1) Selbst wenn sie sich als leistungsfähig bewiesen haben (95%), wie es der Fall war mit dem patentierten Imbibitionsverfahren unter Vakuum 1975 (FCB und Maxime Rivière)
• (2) Englisches Patent Nr. 21021
• (3) "Die Verarbeitung von Zuckerrohr in Saft und Faser" Veranstaltung ISSCT 1962
• (4) "Rohrdiffusion" Das Verdrängungsverfahren in Prinzip und Praktik" Veranstaltung ISSCT 1968"
• (5) Maxime Rivière „Müssen wir die Mühlen abschaffen" Landwirtschaftiche Zeitschrift und Zuckerindustrie der Insel Mauricius Vol 55 Nr. 1 und 2. p. 79 (1976)

II indicates how the diagram should be (# 2 mill bagasse should have the same brix of extractable juice as the juice (J2) coming from the first stage: at 100% good mix).

• (1) Even if they have proved to be effective (95%), as was the case with the patented imbibing process under vacuum 1975 (FCB and Maxime Rivière)
• (2) English Patent No. 21021
• (3) "The processing of sugarcane in juice and fiber" event ISSCT 1962
• (4) "Pipe Diffusion" The displacement method in principle and practice "Event ISSCT 1968"
• (5) Maxime Rivière "Do We Have to Get rid of the Mills?" Mauricius Agricultural Journal and Sugar Industry Vol. 55, No. 1 and 2, p. 79 (1976)

If the repression really in a diffuser instead of just 3 stages would be enough, by 98% profit, with a percentage of imbibition of 200% Fiber.

In the silver diffuser explained in John Payne's Book (process plant of sugar cane production), will be a number used of 18 stages. Indeed, As John Payne himself admits, some mixing takes place and that Process is still far from the desired "valve-drain displacement process".

FR-A-2 278 767 revealed the work process and the equipment, which facilitates the extraction of sugar cane juice by diffusion, the fibers by air displacement frames.

3 - The new method of pipe squeezing

If one is aware of the displacement method approached would have, you would have in the design of the juicer, based on the principle of displacement based, on the structure and volumetric assortment of raw material consideration have to take.

3 - The new method of sugarcane juice extraction

The Density of the crushed tube mass depends on the preparation and from compressing.

If the pipe layer does not exceed 0.5 m, the mass density on a horizontal conveyor belt may vary between 250 and 350 kg per m ³ .

This means that one tonne of cane under this condition, with little compression, will occupy a noticeable space between 2.8 and 4 m ³ .

The void space of the pipe is 0.89 m ³ per ton, while the void space in a shredded pipe mass of less than 0.5 m is between 2.8 - 0.89 = 1.91 m ³ / ton of pipe and 4 - 0.89 = 3.11 m ³ / ton of pipe lies.

We assume a fiber content of 150 kg per ton of pipe (F = 15) to have, what the necessary Amount of juice (say 1.05 density) between 1.91 × 1.05 = 2 tons and 3.11 × 1.01 = 3.29 tons or 2000/150 = 13.33F and 3260/150 = 21F lying contains around the voids to fill.

at an experiment on a pilot plant, which this patent supports, was the amount of juice needed to fill of empty space was needed between 15F and 20F.

As is the volumetric composition of the material (crushed Tube + added juice, called "Megasse") in one commercial diffuser?

The upper layer of the shredded tube (0.6 m) may have the same composition as in the above experiment. But, because of the compression, especially the lower layer of the shredded tube, is the mass density certainly 2 to 3 times higher.

(6) After the experiment of the pilot plant on this claim founded is.

According to E. Hugot, the average mass density (calculated only with pipe) is between 500 and 600 kgm ³ . This means that the average obviously required space of a ton of pipe must be between 1.67 and 2 m ³ .

As a lot of juice addition is to repression of the shredded tube in a commercial diffuser needed?

To the execution results, the one about Silver diffuser released in Hawaii (1) was the highest Amount of juice that could be used without flooding 5,6F. In Hawaii, the average fiber content of the tube was 13.5, the weight of the added Juice per ton was 5.6 × 135 = 756 kg.

The amount of juice added was, on average, 0.720 m ³ / ton, leaving in the tube mat 0.78-0.72 = 0.06-1.11-0.72 = 0.39 m ³ air per ton in the tube.
(But, as we have seen, the amount of air in the top layer of the mat is between 2 + 3 m ³ per ton of pipe).

The The presence of air that impedes the mixing ability (or the ability to displace), could one the reasons its why the stage efficiency of commercial diffusers is so low.

But the main drawback to using a leaching or displacement process through a 1.5-2 meter pipe mat, as is the case with most commercial diffusers, is the low percolation rate (0.1 m / min) attributable primarily to compression is. The stage performance is low because of passing stages:
Leakage angles of 57 degrees from the horizontal in the first stage up to 14.5 degrees in the third stage were noted.

• – indem Rohrmatten zwischen 0,3 bis 0,5 m verwendet werden
• – die Luft zwischen den Rohrfasern vollkommen entzogen wird, und
• – eine Erhöhung des hydrostatischen Druckes, dadurch eine Durchsickerungsquote von 0,1 m pro Sec. erzielt wird.

This does not happen in the claim presented here:

• - By using pipe mats between 0.3 to 0.5 m
• - The air between the pipe fibers is completely removed, and
• - An increase in hydrostatic pressure, thereby a leakage rate of 0.1 m per sec. is achieved.

Meichage

In the sugar beet industry the deprivation of air was considered fundamental for good layer distribution. This was called the old name of Northern France "Meichage".

Meichage was in early 1930 in Egypt used in the Naudet method in bagasse layer distribution.

(1) John Payne Diffusion: The displacement method in principle and practice. Negotiation ISSCT 1968

F. Maxwell (1) had the opportunity to observe the progress of this procedure. He describes it as follows:
"Meichage": After the first cell of the diffuser is filled with bagasse ... "the cell is closed, the juice can penetrate to the bottom of the cell and rise again through the bagasse column until it emerges from the tap on the lid of the cell which is then turned off. This removes the air that is contained in the bagasse. "

The was performed in a 3000TCD factory. An extract rate of 98% and higher juice purity was found (2).

The The aim of the patent shown here is the process of the pipe juice extraction by "meichage" in a pipe juice extraction plant, to make a profit.

The probation The procedure was simulated in a pilot plant where displacement was proved. In 3 operations was removed from the drainable tube juice after drainage in a hydraulic Press up to a moisture content similar to that in a conventional last mill operation reached an extract rate of 98%.

4 - Description of the process

4.1 - Ponchon-Savarit diagram

• – eine typische Zusammensetzung von Rohmaterial: Zerkleinertes Rohr:
• – Zubereitungsindex 90%
• – Faser 16%
• – entziehbarer Saftgehalt 80% (:5F)
• – brix des ausziehbaren Saftes 18,7

eine Imbibitionsquote von 200% auf Fasern (2F)
eine letzte „Megasse" mit einem ausziehbaren Saftgehalt gleichwertig 6F.
ein brix des ausziehbaren Saftes in der Megasse, der an einer bestimmten Etappe abgeht, 2 Punkte tiefer, als brix des Saftes das aus derselben Etappe herauskommt.From the results of the pilot plant, the number of stages to be used was determined by the Ponchon-Savarit diagram ( III ) certainly. The following conditions apply:

• - a typical composition of raw material: shredded tube:
• - preparation index 90%
• - fiber 16%
• - Extractable juice content 80% (: 5F)
• - brix of extractable juice 18,7

an imbibition rate of 200% on fibers (2F)
a final "Megasse" with an extendable juice content equivalent to 6F.
a brix of extractable juice in the megasse going off at a certain stage, 2 points lower than brix of juice coming out of the same stage.

• (1) „Moderne Zuckerrohrverarbeitung" 1932
• (2) Spenzer und Mende: „Zuckerrohr Handbuch" 8te Ausgabe Seite 55.

The goal of 4 brix juice in the last megasse (corresponding to a pole pullout ratio of 98%, assuming a final drainage that gives a bagasse juice content of 0.64) is achieved in 3 stages.

• (1) "Modern Sugarcane Processing" 1932
• (2) Spenzer and Mende: "Zuckerrohr Handbuch" 8th edition page 55.

4.2 - flow diagram

With the above process conditions, the flowchart ( IV ) to be recorded. In order to achieve a 100% success displacement course at each stage, 3 operations are necessary.

A - First stage

1st - Meichage

Accepted, an average typical shredded bulk density is given, the proportion of "meichage" juice needed to Completely all the voids to fill between the tube fibers is 15F, which gives a first total juice content of the megasse in the first leg from 20F to 15.4 brix is used as Meiche juice 15F to the same brix (14,3) as the mixed juice, who leaves the first leg.

2 - repression becomes carried out, the juice (7,36F, Brix 9,3) coming out of the second stage by the same proportion (7.36F) juice to 15.4 Brix, which in the Megasse was to replace, which is thus deprived by repression.

3. Drainage

Before will leave the first stage, the juice content of the megasse (after the repression is the juice content is 20F at an average Brix of 13.15) gradient drained into a holding tank, down to a juice content from 6F in the Megasse on leaving the 1st stage.

• – Saft Einfluß: 5F vom Rohr + 2F als Imbibitionswasser = 7F.
• – Saft Ausfluß: entzogener Saft (gemischter Saft) 6,36F + 0,64F als ausziehbarer Saft in der End-Bagasse = 7F.

The amount of drained juice would, according to this experiment, be 14F to a Brix of 13.72. This juice must be recirculated as "Meichage" juice together with 1F of displaced juice (7.36) with a mixed Brix of 14.3, 6.36F to 14.3 Brix as withdrawn juice from the 1st stage to balance the whole:

• - Juice Influence: 5F from tube + 2F as imbibition water = 7F.
• - Juice outflow: deprived juice (mixed juice) 6.36F + 0.64F as extractable juice in the end bagasse = 7F.

B - Second stage

• - Meichage. Because the megasse has the same juice content inside and outside stage, the meichage juice in this case will have 14F (instead of 15F as in the 1st stage).
• - repressive juice (7.36F) coming from the third leg with a brix of 5.7, will displace the same amount of juice (7.36) to 10.06 brix.
• - drainage from 14F to 8.9 Brix will leave 6F behind, since the juice content of the Megasse supplies the third stage.

C - Third stage

• - "Meichage" Like in the The second stage is the Meichagesaft (14F) through the drain with juice delivered to a mixed brix of 5.7.
• - displacement: Of the Juice of the dewatering mill (5.36F) is called repressive juice be used, followed by Imbibitionswasser 2F. The Brix of the repressed Juice (7.36F) will be 6.22.
• - Drainage: 14F Juice at 5.42 Brix will be deducted from the third and final stage, that makes
• - one Juice content of 6F in the last megasse to a targeted Brix of 4
• - one mixed juice (extruded and derived juice) from 21.36F to 5.7 Brix to the Meichage juice Immediately comes (14F) and the repressive juice the second stage (7,36F).

5 - Description of an industrial conveyor belt for carrying out an uninterrupted three-stage displacement method ( V ).

5.1 - displacement

One ordinary, horizontal, tow-like conveyor belt can be used to prepare the prepared pipe coming from the shredder to transport to the drainage mill.

The speed of the conveyor belt (about 20 m / min) depends on the pipe flow, so that a position of about 0.3 m above the perforated bottom ( 1 ) of the conveyor belt can be moved forward.

The conveyor has a closed, double bottom ( 2 ) with compartments conduits to comply with the flowchart in each of the three stages.

In each stage: three sections are planned.

a) "Meichage" department

"Meichage" juice gets out of tank 8th delivered with a variable speed pump ( 3 ) in the ratio of 15 or 14F (as needed in each stage) by a controlled pressure determined by the level of juice, so that the surface of the tube mass exiting the mechanical part of the conveyor belt is just covered.

b) displacement department

In order to avoid that the part of the conveyor belt, which is used for the displacement, is mixed, it is supplied in a wavy pattern ( 4 ). This is achieved in that the upper deck of the conveyor belt and the returning drag chain as a distributor of the juice, from the overflowing displacement pot ( 5 ) is needed.

The drainage pipe of the double floor displacement section is equipped with an automatic valve ( 6 ) to keep the juice height exactly above the tube mat. The displaced juice gets into the tank ( 8th ) drained.

e) The drainage department

The double bottom of the drainage department is in each stage with the drain tank ( 8th ) through a pipe ( 7 ) connected to the bottom with an automatic valve ( 6 ) is provided. This valve is monitored by the siphon height in the tube mat so that the drainpipe is always full of juice.

This description is common to all 3 stages (see V ).

5.2 - Drainage

The megasse is taken from the last section of the conveyor belt into a shaft ( 9 ), which supplies the pre-juicer (PE).

Of the Pre-juicer consists of an ordinary mill with 4 rolls of which the waste plate and feed roller have been removed. It is an oblique posed three rolls mill set, the half juice content (6F) removed from the megasse.

The Bagasse, which comes from the pre-juicer, is closed by a Bay (Meinecke Bay) (C) to the bottom of the normal baggage elevator (E) feeding the (Donelly) shaft of the last dewatering mill (DWM). These is a traditional 4 roll mill that is the ordinary one Juice content (3F), in a conventional mill tandem from the juice content (1F) of the second last mill bagasse and the imbibition water (2F) added before the last mill, consists.

5.3 - Juice movement between the stages

The dewatering juice coming from the pre-juicer (3F) and the last dewatering mill (2.36F) is added at a ratio of 5.36F per displacement juice to the juice displacement tray (FIG. 5 ) of the third stage with the pump ( 10 ) pumped.

Similarly, the displacement juice from the third leg will be out of the tank 8th with the pump ( 10 ) to the displacement pot ( 5 ) the second stage pumped.

The displacement juice of the first stage is removed from the tank ( 8th ) of the second stage by pump ( 10 ) to the displacement pot of the first stage.

5.4 - Mixed juice from the displacement extractor.

The juice extracted from the plant runs out of the receiving tank ( 8th ) of the first stage into a tank supplied by the pump ( 11 ), from where it is pumped to the process in the ratio of 6.36F as mixed juice.

5.5 - Important

In order to ensure enough hydrostatic pressure for the valve-flow locomotion process and rapid descent of the megasse leaving each stage, the juice level in the receiving tank ( 8th ) in each stage at least 2 meters high, and preferably between 3 to 4 meters lower than the height of the juice in the conveyor belt (top of the tube mat) are.

6 - description of another Type device for carrying of the tube juice displacement process.

• – Die Breite der Förderbandwanne ist zu der der Entwässerungsmühle, die durch das Förderband versorgt werden muß, beschränkt (die Mühlenwalzenlänge ist 2,1 m lang):
• – Die Dicke des Rohrbettes, das weitergeführt werden kann auf dieser Art Förderband , ist auf ungefähr 300 m/m.
• – Die Geschwindigkeit des Förderbandes ist auf ungefähr 25 m per Minute beschränkt.

The normal drag-type conveyor belt can be used by the displacement method for juicing, but only up to 5/6000 tons of tube per day, because of the following limitations:

• - The width of the conveyor trough is limited to that of the dewatering mill, which must be supplied by the conveyor belt (the mill roller length is 2.1 m long):
• - The thickness of the tube bed, which can be continued on this type of conveyor belt, is about 300 m / m.
• - The speed of the conveyor belt is limited to approximately 25 m per minute.

To achieve higher capacity, a different type of device must be used: the crossflow displacement method ( VI ).

6.1 - The Ouerflussverdrängungsmethode ( VI )

As previously explained, the displacement process can only be successfully performed if the juice content of the megasse is at least 20 times higher than the fiber content of the tube - that is, the fiber content of the megasse is less than 1/20 or 5%. have to be.

Under In this condition Megasse has the hydrodynamic property a liquid.

It is a fact that up to 7% fiber content can be pumped like "slurry". With a juice content of 20F, the Megasse becomes free by inclination to flow in an open channel.

Therefore is a mechanical handling in the displacement process during the Meichage and repression not necessary. Only when discharge takes place does the drier material become mechanical Need help.

The "cross-flow travel process" disclosed in this patent is based on the above thoughts.

6.1.1 - Transformation of shredded pipe (or dewatered megasse) into a free-flowing slurry VI )

Part of the Meichagesaftes (10F) is contained in the solid supply, while it by a Mazerotor ( 1 ) (drum with nails as on VI shown rotating at a speed of 300 RPM). The "slurry" (juice content 15F) is thrown down on a curved plate ( 2 ).

6.1.2. Meichage

Additional Meiche juice (5F) is produced by a double bottom and a perforated plate ( 3 ) of the open trough in which the slurry (juice content increasing from 15F to 20F) will flow by gravity to the displacement section.

6.1.3. - Transverse flux displacement and drainage

If the repression takes place, the juice content of the Megasse 20F, the displaced thick juice on the ground is up by an equal amount of thin displacement juice (or water) replaced. That's how it flows in the displacement department the megasse still light by gravity.

But now, as the juice flows down through the perforated floor, the latter must be scratched to avoid clogging. This is done through a perforated drum ( 4 ) which is mounted over a curved perforated floor, reached.

• – sie kratzt den gelöcherten Boden in der Verdrängungsabteilung auf
• – sie fördert die Megasse in der Entwässerungsanlage, sollte die Megasse wieder fest werden, vorwärts.

This drum serves two purposes:

• - She is scratching the perforated floor in the repressive department
• - It promotes the Megasse in the drainage system, should the Megasse become solid again, forward.

Of the last operation is performed by large nails, (0.3 to 0.5 m long) (5), in 12 lines along a perforated one Drum (2 to 3 m diameter) are welded, executed. each Row (with a nail distance of 50 m / m) will serve as a fork, to move the megasse to the unloading department during the Juice for drainage can leak.

Of the Diameter of the drum, the length of the drum Nails and The speed (1 to 2 RPM) will vary depending on the desired prescribed quantity chosen.

The scratching effect is caused by a scratching plate ( 6 ), which is welded on the top of the nails of each row along.

Of the perforated Soil kept clean allows the displacement juice through the flowing To flow through Megasse.

Of the displaced Juice is in the perforated drum above the displacement section let in.

Therefore, the perforated drum is open on both sides. A thick steel plate is welded in halfway between the two ends inside the perforated drum. This plate ( 11 ) is welded in the middle to a hub which is connected to the axle. The drum is driven by a hydraulic or electric variable speed motor with a speed of 1 to 2 RPM).

Displacement juice may be introduced through the flanges of an outer container in which the juice level is regulated to prevent air from entering the perforated drum from each side (into a distribution container (FIG. 7 ). In this way, the displacement juice can be evenly distributed over the megasse in the displacement section, flow through and collect in the double bottom, from where it is discharged into the receiving receptacle below. The flow of displaced juice is controlled by an automatic valve on the drainpipe, which measures the height in the juice box ( 8th ) monitored, regulated.

drainage

Drainage happens when the locomotion is reached. In the dewatering section, where air is admitted on top of the bed, the remaining juice is removed by a hydrostatic pressure (2 to 4 m) between the surface of the tube and the surface of the juice in the receiver, through a pipe ( 9 ) pulled down.

6.1.4. - outflow

The dehydrated Megasse gets through the gravity at an angle of 60 degrees to the feed side of the next stage drained.

Around the perforated plates and nails to clean and to help the departure of Megasse in the next stage Meichagesaft from the next Stage in the distribution box container (10) through the flanges on each side.

• 1 – Auslichten und Naßmachen der Megasse zu einem Saftgehalt von 15F, indem ein Mazerator verwendet wird.
• 2 – Meichage-Rinne mit doppeltem Boden und durchlöcherter Platte
• 3 – Verdrängung
• 4 – Entwässerung

From here begins the next stage where the same operation is performed in the same order:

• 1 - Elize and wet the megasse to a juice content of 15F using a macerator.
• 2 - Meichage gutter with double bottom and perforated plate
• 3 - displacement
• 4 - drainage

As for the towed conveyor belt for repression, Three stages are used.

The flow chart is the same as that of the towed conveyor system ( V )

Claims (3)

A method for sugarcane juice extraction a layer of sugarcane fiber by using one in phases ongoing continuous counterflow process, which is characterized by three phases, being used as a means of transport for the first phase and the second phase of the derived juice from the second and third phases, respectively, in which the juice of the dewatering mill followed by water soaking, as a means of transport for the third stage is used, each stage excludes air elimination through meichage, the deprivation of the juice through the phases happens through the use of a real valve-drainage process; and by dissipation of the displaced juice and the transport material at every stage. A method as claimed in claim 1 is characterized by the fact that it running on a horizontal tow-like conveyor belt, the speed of the conveyor belt must be with the Cane river match, So that the Layer thickness within 0.3 and 0.5 meters ranked. A method as in claim 1 or claim 2 is characterized in that the level of juice in the receiving vessel at least 2 meters lower in each phase than the mirror of the Juice in the conveyor belt.